REPORT - Multilateral Investment Guarantee Agency · ministry of tranport projects management unit 7 ***?t* report environmental impact assessment construction investment project

MINISTRY OF TRANPORT

PROJECTS MANAGEMENT UNIT 7

*****

REPORT

ENVIRONMENTAL IMPACT ASSESSMENT

CONSTRUCTION INVESTMENT PROJECT ON

ADJUSTMENT, ADDITION OF INVESTMENT PROJECT ON

REHABILITATION AND IMPROMENT FOR NATIONAL

HIGHWAY No.20 – SECTION FROM Km0+00 TO

Km123+105.17 IN TERRITORY OF

DONG NAI AND LAM DONG PROVINCES UNDER THE

FORM OF BUILD - TRANSFER CONTRACT

(The report was edited and supplemented under reviews of the evaluation

council, held on 06th November, 2015)

Ho Chi Minh city, 12/2015

MINISTRY OF TRANPORTPROJECTS MANAGEMENT UNIT 7

***?t*

REPORT

ENVIRONMENTAL IMPACT ASSESSMENT

CONSTRUCTION INVESTMENT PROJECT ONADJUSTMENT, ADDITION OF INVESTMENT PROJECT ON

REHABILITATION AND IMPROMENT FOR NATIONALHIGHWAY No.20 - SECTION FROM Km0+00 TO

Km123+105.17 INTERRITORY OFDONG NAI AND LAM DONG PROVINCESUNDERTHE

FORM OF BUILD - TRANSFER CONTRACT

(The report was edited and supplemented under reviews of the evaluationcouncil, held on 06th Novemberr 2015)

PROJECT owNERly CONSULTANT

MANAGEMENT UNIT 7

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CONTENTS

INTRODUCTION ........................................................................................................ 10

1. ORIGIN OF THE PROJECT .................................................................................... 10

1.1. Summary of the project .......................................................................................... 10

1.2. Agency approved the project ................................................................................... 12

1.3. The relationship of the project to the related development planning ....................... 12

1.3.1. The area which proposed for the expansion of Dau Giay overpass intersection . 12

1.3.2. The proposed area for the construction of Highway No 20 passing of Bao Loc

city. ................................................................................................................................ 13

2. LEGAL AND ENGINEERING BASIS .................................................................... 15

2.1. Legal basis .............................................................................................................. 15

2.2. Legal document, decision or report of authority agencies related to the project. .. 16

2.3. Vietnam standards and national technical regulations on environment ................. 17

2.4. Resources of documents and data........................................................................... 18

3. IMPLEMENTATION OF THE EIA REPORT ........................................................ 19

4. USED METHODSDURING EIA IMPLEMENTATION ........................................ 21

CHAPTER I. PROJECT SUMMARY DESCRIPTION ............................................. 23

1.1. Name of the project ............................................................................................... 23

1.2. Investor ................................................................................................................... 23

1.3. Point of the project components ............................................................................. 23

1.3.1. The new component ............................................................................................ 23

1.3.2. Relationship of the Project with existing objects ................................................ 29

1.4. Main content of the Project .................................................................................... 32

1.4.1 The project goals .................................................................................................. 32

1.4.2. Scale of constructing, widening intersection of Dau Giay flyover ................... 32

1.4.3. Measures to organize the construction, construction technology and construction

items of the project ........................................................................................................ 52

1.4.4. List of machinery, equipment .............................................................................. 60

1.4.5. Raw materials and waste dumps.......................................................................... 61

1.4.6. Project implementation schedule ......................................................................... 66

1.4.7. Investment ........................................................................................................... 66

1.4.8. Management and execution of projects ............................................................... 67

2.1. Natural environmental conditions .......................................................................... 73

ii

2.1.1. Conditions of geography, geology ...................................................................... 73

2.1.2. The weather Conditions ....................................................................................... 74

2.1.3. Hydrological characteristics ................................................................................ 78

2.1.4. Status of physical environmental components .................................................... 79

2.1.4.1. Air environment, noise and vibration. .............................................................. 79

Criteria ........................................................................................................................... 83

2.1.4.2. Environmental soil, groundwater, surface water .............................................. 86

2.1.4.5. Current status of biological resources .............................................................. 93

2.2. Socio-economic conditions .................................................................................... 99

2.2.1. Economic Conditions .......................................................................................... 99

2.2.2. Economic conditions of the households along the project area ........................ 101

2.2.3. Social conditions of local areas of project area. ................................................ 101

2.2.3. The conditions of traffic and transport planning in the project area ................. 103

CHAPTER III. ENVIRONMENTAL IMPACT ASSESSMENT ............................. 106

3.1. Assessment and forecast impacts ...................................................................... 107

3.1.1. Environmental impact assessment in the preparation phase of the project ....... 110

3.1.2.Impact Assessment and forecast of the construction phase ............................... 122

3.1.3. Assessing the impact in the operational phase of the project ............................ 160

3.1.4. Assess and forecast the impact caused by risks, breakdown of projects ........... 169

3.2 Commenting on the level of detail, the reliability oftheassessment methods ....... 171

3.2.1. Field survey methods, monitoring and environmental analysis ........................ 171

3.2.2. Method list ......................................................................................................... 171

3.2.3. Modeling method ............................................................................................... 172

3.2.4. Network diagram method .................................................................................. 172

3.2.5. Survey methods, data collection Primary .......................................................... 172

3.2.6. Methods of collecting secondary data ............................................................... 172

3.2.7. Statisti, analysis method .................................................................................... 173

3.2.8. Environmental matrixmethod ............................................................................ 173

3.2.9. Method Expert ................................................................................................... 173

CHAPTER IV. MEASURES TO PREVENT, MITIGATE NEGATIVE IMPACTS

AND PREVENT, RESPOND TO ENVIRONMENTAL INCIDENTS .................... 174

4.1. Measures to prevent and mitigate the negative impacts of the project ................ 174

4.1.1. Measures to prevent and mitigate the negative impacts during preparation phase

..................................................................................................................................... 175

iii

4.1.2.Measures to prevent and mitigate the negative impacts of the project during the

construction phase ....................................................................................................... 182

4.1.3. Measures to prevent and mitigate the negative impacts of the project on the

environment during the operation phase ..................................................................... 206

4.2. Measures to prevent and respond to risks, environmental incidents .................. 207

4.2.1. Management, prevention and response to technical problems caused a collapsed

building ........................................................................................................................ 207

4.2.2. Prevent fire incident .......................................................................................... 208

4.2.3. Prevention of labor accidents and incidents ...................................................... 208

4.2.4. Manage, prevent and respond to risks and incidents due to landslides on the Bao

Loc city bypass ............................................................................................................ 209

4.2.5. Managing, preventing and responding to risks and incidents due to food

poisoning ..................................................................................................................... 209

4.3.1. Estimated costs for the implementation of environmental management plan .. 210

4.3.2. Organization of implementing an Environmental Management Plan ............... 211

CHAPTER V. THE ENVIRONMENTAL MANAGEMENT AND MONITORING

PROGRAM ........................................................................................................ 217

5.1. Environmental Management Program ............................................................. 217

5.1.1. Proposes .......................................................................................................... 217

5.1.2. Summary of the environmental management program .................................... 218

5.1.3.The category of management ............................................................................. 247

5.2. Environmental Monitoring Program .................................................................... 247

5.2.1. Objectives .......................................................................................................... 247

5.2.2. The basis of environmental quality monitoring .............................................. 248

5.2.3. Content of environmental monitoring program .............................................. 248

5.2.3.1. Other monitorings ........................................................................................... 251

CHAPTER 6. COMMUNITY CONSULTATION .................................................... 253

6.1. Sumarize the process of community consultation ................................................ 253

6.1.1. Sumarize the process of consulting commune peopple’s committee ................ 253

6.2. Result of community consultation ........................................................................ 253

6.2.1. Opinion consultation of communes and wards people’s committee ................. 253

6.2.2.Opinion consultation of communities ................................................................. 255

6.2.3. Feedback and commitment of the project owner for suggestions, proposals,

requirements of consulted agencies and organizations ............................................... 257

CONCLUSIONS, RECOMMENDATIONS AND COMMITMENTS ..................... 258

iv

LIST OF INDEXS

B

BOD Biochemical Oxygen Demand

BT Build & Transfer

BOT Build, Operation, & Transfer

C

CHXHCN Socialist Republic of Vietnam

COD Chemical Oxygen demand

CP Government

D

DO Dissolved Oxygen

DONRE Department of Natural Resource and Environment

E

EIA Environmental Impact Assessment

G

GDP Gross Domestic Product

I

ISO International Organization of Standardisation

M

MOC Ministry of Construction

MONRE Ministry of Natural Resources and Environment of the Socialist

of Republic of Vietnam

MOT Ministry of Transport

N

NĐ Decree

v

Q

QCVN Vietnam Standard

QĐ Decision

S

SMEWW Standard methods for the Examination of Water and Wastewater

T

TCVN VietNam Standard

TEDI Transport Engineering Design Inc.

TEDI-RECO Road and Bridge Engineering Consultants Joint Stock Company –

TEDI - RECO

W

WHO World Health Organization

WB World Bank

vi

LIST OF TABLES

Table 1.1. Socio-economical object in area of building Dau Giay flyover ................. 30

Table 1.2. Socio-economic objects in the area of constructing Bao Loc City bypass 32

Table 1.3. Clearance volume at intersection of Dau Giay ........................................... 33

Table 1.4. Road construction volumes at intersections section Dau Giay .................. 37

Table 1.5. Construction volume of Dau Giay flyover ................................................. 40

Table 1.6. Land clearance amount in Bảo Lộc city bypassing route .......................... 42

Table 1.7. The total amount of road construction project of Bảo Lộc city bypassing

route ............................................................................................................................. 44

Table 1.8. Conctruction quantity of Minh Rong II Bridge ......................................... 48

Table 1.9. Amount of horizontal drainage on the route to avoid Bao Loc .................. 49

Table 1.10. The construction volume of interchanges on by-pass Bao Loc ............... 51

Table 1.11. Constrution positions at bypasssing routes in Bảo Lộc city .................... 58

Table 1.12. Expected typical machines and construction equipments ........................ 60

Table 1.13. General construction schedule.................................................................. 66

Bảng 1.14. Tổng mức đầu tư của Dự án (triệu đồng) .................................................. 67

Table 1.15. Project’s Major information ..................................................................... 70

Table 2.1. Air temperature in months according to Bien Hoa weather station ........... 74

Table 2.2. Monthly rainfall according to Bien Hoa weather station ........................... 75

Table 2.3. Monthly humidity according to Bien Hoa weather station ........................ 75

Table 2.4. Monthly wind speed according to Bien Hoa weather station .................... 75

Table 2.5. Monthly average hours of sunshine according to Bien Hoa weather station.

..................................................................................................................................... 76

Table 2.6. Air temperature in months according to Bao Loc weather station ............. 76

Table 2.7. Monthly rainfall according to Bao Loc weather station ............................. 77

Table 2.8. Monthly humidity according to Bao Loc weather station .......................... 77

Table 2.9. Monthly wind speed according to Bao Loc weather station ...................... 77

Table 2.10. Monthly average hours of sunshine according to Bao Loc weather

station. .......................................................................................................................... 77

Table 2.11. Water level of Minh Rồng II bridge across Dabrim stream ..................... 79

Table 2.12. Sampling locations of air, noise, vibrations along the project area ......... 81

Table 2.13. Results of microclimate measurement along the project route ................ 83

Table 2.14. Results of measurement of air quality along the project route ................. 83

Table 2.15. Results of measurement of noise along the project route .......................... 84

vii

Table 2.16. Results of vibration along the project route (Unit: dB) ............................ 85

Table 2.17. Surfacewater sampling locations .............................................................. 86

Table 2.19. The analysis results of groundwater quality ............................................ 87

Table 2.20. Groundwater sampling locations .............................................................. 88

Table 2.21. The analysis results of underground water quality.................................. 90

Table 2.22. Location of soil sampling in the project area ........................................... 90

Table 2.23a. Results of soil quality analysis in the project area ................................. 92

Table 2.23b. Results of soil quality analysis in the project area ................................. 92

Table 2.13. Statistic data of social economic characteristics at positions belonging to

the project scope ........................................................................................................100

Table 3.1. The matrix identifies the environmental effects of the project period .....108

Table 3.3. The amount of dust emissions and air pollution emissions when burning 1

ton of fuel (For diesel vehicles from 3.5 to 16 tonnes) .............................................111

Table 3.4. Expected participation of means for demolition and fuel consumption ..112

Table 3.5. Emissions of air pollutants generated by the demolition process ............112

Table 3.6. Correlation coefficients with a stable level of atmospheric .....................113

Table 3.7. Decentralization of atmospheric stability (according to Turner, 1970) ...113

Table 3.8. Results of emission levels from used equipments ....................................114

Table 3.9. Solid waste from preparation period ........................................................115

Table 3.10. Forecast noise levels decline with distance ............................................116

Table 3.11. The level of noise from the activitiesof houses demolition ...................117

Table 3.12.Summary scope clearance and resettlement Impacts ..............................118

Table 3.13. Damage assessment by land occupation ................................................121

Table 3.14. The total volume of excavation and embankment .................................123

Table 3.15. Load of dust from excavation and embankment operations ..................124

Table 3.16. The simulation results of dust emissions by earthworks (mg/m3) .........125

Table 3.17. Assess the level of dust pollution to each sensitive objects ...................127

Table 3.18. Emission intensity of construction equipments ......................................129

Table 3.19. Result of emission load during construction period (mg/m3) ................129

Table 3.20.Capacityand load of wastwater discharged from maintenance operations

...................................................................................................................................133

Table 3.20. The load of contaminants in domestic waste water................................136

Table 3.21. The concentration of pollutants in domestic waste water ......................137

Table 3.22. The forecast the solid waste generated in the construction phase ..........139

viii

Table 3.23. The typical noise level of construction equipments (dBA) ....................141

Table 3.24. Results of calculation of noise at source in the construction phase (dBA)

...................................................................................................................................142

Table 3.25. Assessment of noise decrease with distance ..........................................142

Table 3.26. The level of noise decrease with distance to the sensitive objects .........143

Table 3.27.Typical vibration level of some construction equipments (at distance

of 10m) ......................................................................................................................145

Table 3.28. Vibration level decrease with the distance from the construction

equipments .................................................................................................................145

Table 3.29. Hazardous waste generated during the construction phase ....................151

Table 3.30. Heath problems during construction period ...........................................158

Table 3.31. Predict the traffic capacity at Dau Giay to 2025 ....................................160

Table 3.31. Predict the traffic capacity at QL20 to 2025 ..........................................161

Table 3.33. Coefficient of air pollution caused by vehicles according to .................161

Euro standard .............................................................................................................161

Table 3.34. Emissions from cars in 2025 forecast in peak hour (mg/m.s) ................162

Table 3.35. The forecast distribution of concentrations of air pollution in the

operational phase .......................................................................................................163

Table 3.36. Chemical chearacteric of dirty layer on the road ...................................164

Table 3.37. The average equivalent noise level by traffic on the road to 2020 to 2025

as distances ................................................................................................................166

Table 3.38. Forecasting the vibration attenuation with distance (dB) ......................167

Table 4.1. Summary of some preventation, mitigation measures for negative impacts

...................................................................................................................................174

Table 4.2.. Cost of environmental managing implementation, monitoring and

supervision .................................................................................................................211

Table 4.3. The role and responsibilities of the organizations for environmental

managementin the preparation and construction phases of the project .....................212

Table 5.1. Summary of the environmental management program ............................219

Table 5.4. The requirement of the environmental monitoring ..................................249

Table 6.1. Consulted comments of People's Committees of communes and wards .254

Table 6.2. Consulted comments of community representatives ................................255

ix

LIST OF FIGURES

Figure 1.1: Present condition of intersection area ....................................................... 23

Figure 1.2: Overall layout of Dau Giay intersection ................................................... 25

Figure 1.3: Overall layout of Gia Duc brigde ............................................................. 26

Figure 1.4: Overall layout of La Nga bridge (old bridge) ........................................... 27

Figure 1.5: Diagram of Bao Loc bypass ...................................................................... 28

Figure 1.6. Roadbed and road surface of Bảo Lộc city bypassing route ..................... 44

Figure 1.7. Diagram of the project implementation in the preparation phase ............. 68

Figure 1.8. Diagram of construction phase ................................................................. 69

Figure 2.1: Diagram of sampling locations ................................................................. 80

Figure 2.2. Characteristics of ecological colonization around intersections Dau Giay

..................................................................................................................................... 95

Figure 2.3. Characteristics of ecological colonization from Km0+00 to Km5+00 on

Bao Loc city bypass ..................................................................................................... 96

Figure 2.4. Characteristics of ecological colonization from Km5+00 to Km10+00 on

Bao Loc city bypass ..................................................................................................... 97

Figure 2.5. Characteristics of ecological colonization from Km10+00 to Km15+470

on Bao Loc city bypass ................................................................................................ 98

Figure 3.1: Some ecology system is impacted by construction activities .................158

Figure 3.2. Impact Assessment of the surface water runoff in the operational phase

...................................................................................................................................165

Figure 4.1. Diagram of implementation of the environmental management program

...................................................................................................................................212

Figure 5.1: Map of environmental monitoring positions ..........................................252

10

INTRODUCTION

1. ORIGIN OF THE PROJECT

1.1. Summary of the project

The Highway No 20 begins at the junction of Dau Giay (Km0+00) in Bau Ham 2

commune, Thong Nhat district, Dong Nai province and end in Dran town

(Km268+00), Don Duong district, Lam Dong Province. The length of National

Highway 20 route are 268 km, which passes through the territory of Dong Nai

province about 75.6 km and Lam Dong Provinces about 192.4 km.

In 2010, The Ministry of Transport issued the Decision No. 3425 /QĐ-BGTVT

30/11/2010 which approved the investment project on rehabilitation the Highway No

20 connecting Dong Nai province and Lam Dong province. Based on the

recommendation of the People’s committee of Lam Dong province (Document

No.2926/TTr-UBND dated 07/6/2011), Ministry of Transport (Document No. 4202 /

BGTVT-KHDT dated 14/7/2011), Ministry of planning & investment (document No.

4466 / BKH-KCHTDT dated 09/7/2011) and Ministry of finance (No. 9030 /BTC-ĐT

dated 08/7/2011), the prime minister had appoved in principle on the investment

project on rehabilitating and improving NH20 in Dong Nai and Lam Dong province

under the form of BT contract (document No. 1250 / TTg-KTN dated 27/7/2011). On

date 07/11/2011, the ministry of transport issued decision no. 2552/QĐ-BGTVT

approved investment projects adjusted construction QL20 rehabilitation, linking Dong

Nai and Lam Dong provinces to split into 02 project components, including

component projects I invested in the form of Build - Transfer (BT). Environmental

impact report of the project on rehabilating and improving NH20 from Dong Nai

province to Lam Dong province is approved by the minister of national resources and

environment in decision no.1017/QĐ-BTNMT on 07/09/2012.

Due to the urgent tempo of the project (NH20 is deteriorating seriously), the

Ministry or Transport had submitted (No. 6408 /BGTVT-Construction and dated

10/10/2011) and the Prime Minister had approved (Document No. 2265/TTg-KTN

dated 06/12/2011) assigned the Ministry of Transport for consideration and assessment

the capacity profile of investors to negotiate and select investor. On 12/12/2011, the

Ministry of Transport issued Decision No. 2836 / QĐ-BGTVT of the appointment of

Investors of the project were partnership included: Cuu Long Corporation for

Investment Development and Project Management of Infrastructure, Building

materials corporation No.1-company limited, PetroVietnam construction Joint stock

corporation and East Mekong service-trade-production-construction limited company.

Consortium of investors has founded the project enterprise BT20 – Cuu Long JSC to

implement the project.

11

To date 18/9/2012, project contracts signed off (BT contract to sign off) was the

Ministry of Transport and the investor consortium agreed to sign (a contract number

7988 / HD.BT-BGTVT) and replace the contract was signed on the principle of

22/11/2011 (No. 1626A / HD.BT-GTVT). Based on recommendation of the Ministry

of Planning & Investment (Document No. 5202 / BKH-GSTDDT dated 07/23/2013),

the proposal of PMU7 (Document No. 60 / BQLDA7-DHDA dated 07/8/2013), report

of the BT20-Cuu Long JSC (No. 319 / BT20-KHDA dated 06/8/2013), the Ministry of

Transport issued Decision No. 2378 /QĐ-BGTVT dated 08/12/2013 approved the

construction investment project on rehabilitation and improvement of NH no.20 –

section from Km0 + 00 to Km123 + 105.17 on the territory of Dong Nai and Lam

Dong province in the form of Build - Transfer (replacing Decision No 2552 / QĐ-

BGTVT dated 07/11/2011) and, on 16/01/2014, BT official contract has been mutually

agreed and signed (No. 12/HĐ.BT-BGTVT).

According to the statistical data of PMU7 and BT20-Cuu Long JSC, as of April

2015 the project was completed by 90% the volume of construction. Currently the

project has completed all of the main items and handover procedures are under BT

contract was signed previously. According to the data compiled and updated review of

investment categories, the total investment of the approved project is 5,264.635 billion

VND. However, the project after completion of the residual budget (premium

reserves) not used is 1115.402 billion VND.

On the basis of the opinion of the Office of the Government on the construction

of Bao Loc City bypass, Lam Dong Province (Document No. 3669/VPCP-KTN dated

24/05/2012) and People's Committee of Dong Nai province on investment in building

overpasses at intersections Dau Giay, Thong Nhat (document No. 6499 /UBND-ĐT

dated 07/17/2014). Along with using residual capital of projects and contributing to

increase effectively operation of National highway no. 20, the additional components

investment to build Dau giay flyover at Km0 of QL20 and Bao Loc city bypass (from

Km114 + 100 to Km128+800) on QL20 by the Ministry of Transport proposed,

approved the implementation in Document No. 12 534/BGTVT-ĐTCT dated

10/06/2014 of the Ministry of Transport on report additional investment plans Bao Loc

bypass and Dau Giay intersection flyover into the project on rehabilitation and

improvement – section from Km0 to Km123 + 105.17 and notification No. 386/TB-

BGTVT dated 04/5/2015 conclusions of Deputy Minister Nguyen Ngoc Dong in

meeting to consider to invest additional items Dau Giay intersection and Bao Loc city

bypass into rehabilitation and improvement – section from Km0 to Km123 + 105.17 in

the form of contract (BT).

The project on rehabilitaion and improvement Natrional highway no.20 – section

from Km0 to Km123+105.17 in Dong Nai and Lam Dong province in the form of BT

12

contract under the project on rehabilitaion and improvement Natrional highway no.20

connect from Dong Nai to Lam Dong province.

The project on Investing in rehabilitation and improvement NH no.20-section

from Km0 to Km123 + 105.17 on the territory of Dong Nai and Lam Dong province uin

the form of BT contract" under the "Project on rehabilitation and improvement NH

no.20 connect fromDong Nai province to Lam Dong province "was appoved

Environmental impact report by the Ministry of Natural Resources and Environment in

Decision No. 1017/QĐ-BTNMT dated 09/07/2012. Dau Giay flyover and Bao Loc

bypass are added in the project so according to Clause 1, Article 15 of Decree No.

18/2015 /NĐ-CP dated 14/02/2015 of the Government government regulations on

environmental protection plan, strategies, environmental assessment, environmental

impact assessment and environmental protection plan, the project must rebuild the EIA

report. The scope of the EIA report includes the contents of environmental impact

assessment for two additional components are Dau Giay flyover intersection and Bao

Loc city bypass . Due to two additional items located in two provinces should be based

on Annex III section 11 of Decree No. 18/2015 / ND-CP, responsible for evaluating and

approving reports on environmental impact assessment is Ministry of Natural Resources

and Environment.

1.2. Agency approved the project

Authoritative Government

agency

: Ministry of Transport.

Add: 80 Trần Hưng Đạo - Hoàn Kiếm - Hà Nội

Tel: +844. 39424015 - Fax: +844. 39423291

Representative of authoritative

Government agency

: Project Management Unit 7.

Representative: Mr. Nguyen Chung Khanh –

General Director

Add: No 63, Nguyen Xistreet - Binh Thanh

district - Ho Chi Minh city

Tel: +84838040735.

Fax: +84838040930

Investor : BT20 – Cuu Long Join stock company

1.3. The relationship of the project to the related development planning

1.3.1. The area which proposed for the expansion of Dau Giay overpass intersection

This area is the beginning of the project (Km0 – in the Highway No 20,

communicate with the National Highway 1A at Km1832 + 400 in Thong Nhat district,

Dong Nai province.

In the study area, The transportation network is related as follows:

13

- Within the National Highway 1A area from Binh Thuan to Dong Nai, there is

currently a renovation project of background pavement in the section of Phan Thiet -

Dong Nai to ensure the safe exploitation.

- The highway Project of Ho Chi Minh City - Long Thanh - Dau Giay: The

beginning point is at the intersection of An Phu, District 2, Ho Chi Minh City and the

ending point is at Km1829 + 850 in the National Highway 1A. The total route length is

54,794 km. Highway type is A, Bn = 27.5m, which is currently under the construction.

- Construction and investment Project of Dau Giay - Lien Khuong highway:

The begining point is at Km1829 + 850 on the National Highway 1A (about Km54 +

794.07 in the highway of the Ho Chi Minh City - Long Thanh – Dau Giay), the ending

point is at Km208 +250 on the highway of Lien Khuong – Da Lat. Standard highway

is type A, speed rate is from 100-120 km/h depending on each section. Scale cross-

Bn= 25.5m, the section passing through the town have Bn = 27.50m to make the

landscaped separators.

- The construction and Investment projects of the city of Bien Hoa (BOT

project): From the beginning point of the project at Km0 + 000 to - Km1851 + 714 (of

the National Road 1), other no contour roads with the North – South railway (about

Km 1 + 000 in the bypassing route of Bien Hoa city, or Km1679 + 870 of the Hanoi -

Ho Chi Minh railway) avoid route of Bien Hoa city, Long Binh delivery depot, along

with provincial Highway No 15 then connecting with the highway 51 at Km5 + 000 of

the highway 51). The total length of the route is about 12.050,7 m.

- Planning of traffic development of Dong Nai province: Investment Project to

restore and renovate NH No.20-section from Km0 QL20 to Km123 + 105.17 on the

territory of Dong Nai and Lam Dong province in the form of BT contract is according

with development plan of transportation in Dong Nai in 2010 and stategic

development to 2020 by Decision No. 3807 /QĐ-UBND dated 05/11/2007 of Dong

Nai province People's Committee approved the adjustment.

- The general plan for Thong Nhat district’s economic – society development:

For renovation segment, expanding the section from Km0 QL20 to Km1 + 800 under

the project of restoration project investments, improving QL20 section from Km0 -

Km123 + 105.17 on the territory of Dong Nai and Lam Dong province in the form of

BT contract fit the general plan to Thong Nhat district’s economic – society

development phase 2011-2015 and orientation in the period from 2015 to 2020.

1.3.2. The proposed area for the construction of Highway No 20 passing of Bao Loc

city.

There are two highways passing through the town of Bao Loc: Highway No 20

towards the East of Da Lat city (about 120 km long). There are some other national

fishbone highways in this Highway: In the town of Di Linh - Di Linh district: towards

14

the North of Dak Nong province and Binh Thuan province to the South. At the

junction of Lien Khuong - Duc Trong (adjacent Highway 27): towards the North of the

province of Dak Lak. At the junction Phi Nom (adjacent Highway 27): towards the

East of Ninh Thuan province.

The Highway 55 junction of Loc Son (junction Le Minh Sanh) is going to build

hydropower plant of Ham Thuan - Da Mi. This Highway 55 and the Highway 28 will

create a network of interconnected road traffic at the gateway to the northwest of Binh

Thuan, connecting South Highlands (Bao Loc city) to the South East coast, create new

dynamics for economic and social development, security not only for Binh Thuan but

also for the South and the South East Highland with faster rate. There is ability to open

some new tours from Vung Tau - Binh Chau - La Gi - Bien Lac Lake - Da My lake -

Da Lat and vice versa.

Outbound traffic of the city of Bao Loc: Mainly by the Highway 20 from Da

Lat city to the South of the city, passing Bao Loc col to Da Huoai - Tan Phu - Dinh

Quan connecting with the National Highway 1A at Dau Giay junction. The route from

Bao Loc - Dau Giay has a length of 120 km. Towards the north of Bao Loc city, the

city will create more favorable traffic system, shortening the time from Bao Loc to Ho

Chi Minh City and Da Lat and from Bao Loc to Lien Khuong Airport – Duc Trong.

Towards the South of the city, over a half of the Loc Son col - Dai Binh junction -

Highway 55 - Tanh Linh – The National Highway 1A. This total length is 140km. The

Highway No 20 running through the city center with 4 km length from Loc Son to

Tien Loc ward will be asphalt upgraded and expanded the pavement of 15m, sidewalks

of 6m on each side.

The local transport network will be invested to go the center of wards or

communes.

It is expected to construct a highspeed section of Dau Giay (from Dau Giay

junction with Highway 20 going to Lam Dong - Thong Nhat district of Dong Nai

province - Lien Khuong (Duc Trong - Lam Dong) running through the Northern of the

city.

Currently and in the future, the road network of the city of Bao Loc is meeting

the socio-economic development requirements, creating economic relationships in a

associated large area for Bao Loc town to become a regional economic key in the

Southern of Lam Dong province.

- The project to rehabilitate and improve NH no.20, section in Lam Dong Lam

Dong province (Km123 + 105.17- Km154 + 400) in the form of BOT contract: The

project started at Km123 + 105 on Highway 20 is located in Loc An, Bao Lam district,

Lam Dong province and the end point of the project at Km154 + 400 on Highway 20

is located in Di Linh town, Di Linh district, Lam Dong province. Design standards of

15

grade III mountainous road, design speed 60Km/ h. The width of road is 9m. The

project is implementing.

- Investment projects to build Dau Giay - Lien Khuong free way: First point is

at Km1829 + 850 on National highway no.1A (about Km54 + 794.07 of HCMC -

Long Thanh – Dau Giay expressway), end at approximately Km208 + 250 on Lien

Khuong – Dalat expressway. Standard class A highway, the design speed depends on

each section and changes from 100 to 120 km/h. The width are 25.5m, and in urban

section that are 27.50m landscaping divider. Project is not implemented.

- Spatial and transport plan: The investment project to build Bao Loc bypass in

the project to restore and renovate the section from Km0 to Km123 +105.17 on NH

no.20 in Dong Nai and Lam Dong province under the form of BT contract accrording

to planning spatial orientation Bao Loc Town (old) to 2025 and the overall planning of

transport development in Lam Dong province to 2020 and orientations to 2030.

2. LEGAL AND ENGINEERING BASIS

2.1. Legal basis

- Ralating to make EIA report:

1. Environmental Protection Law, 2014 approved by the Parliament of the

Socialist Republic of Vietnam, XIII 7th session on 23/6/2014 and is effective

from 01/01/2015;

2. Decree 18/2015/NĐ-CP dated 14/02/2015 from Goverment regulates on

environment protection planning, strategic environmental assessment,

environmental impact assessment and environmental protection plan;

3. Circular No. 27/2015/ TT-BTNMT dated 29/5/ 2015 of the Ministry of Natural

Resources and Environment regulate on environmental plan, strategic

environmental assessment, environmental impact assessment, environmental

protection plan.

- Ralating to environment and land use:

4. Water Resources Law, 2012 approved by the National Assembly of the

Socialist Republic of Vietnam, X 3rd session, dated on 20.05.1998.

5. Land Law, 2013 approved by the National Assembly of the Socialist Republic

of Vietnam, XIII 6th session dated on 9/12/2013.

6. Biodiversity Law, 2008 apprved by the National Assembly of the Socialist

Republic of Vietnam, XII 4th session, dated on 13/11/2008;

7. Road Traffic Law, 2008 approved by the National Assembly of the Socialist

Republic of Vietnam, XII session dated on 13/11/2008;

8. Decree No. 38/2015 /NĐ-CP of the Government dated 9/4/2007 on solid waste

management;

9. Decree No. 12/2009/NĐ-CP dated 12/02/2009 of the Government on

management of investment projects construction;

16

10. Decree No. 35/2015/NĐ-CP dated 13/4/2015 of the Government regulate in

detail on the management and use of land for rice cultivation;

11. Decree No. 43/2014/NĐ-CP dated 15/5/2014 of the Government regulate in

detail on some rule of the land law;

12. Decree No. 47/2014/NĐ-CP dated 15/5/2014 of the Government on assistance,

compensation and resettlement when the government recover land;

13. Decree No. 11/2010/NĐ-CP dated 24/02/2010 of the Government regulate on

road infrastructure management and protection;

14. Circular No. 32/2015/TT-BGTVT dated 24/7/2015 of the Minister of Transport

regulations on environmental protection in developing transport infrastructure;

15. Circular No. 39/2010/TT-BTNMT dated 16/12/2010 Regulations on National

technical regulations on environment;

16. Circular No. 36/2015/TT-BTNMT of MONRE dated 14/04/2011 regulate on

Hazardous Waste Management;

17. Circular No. 37/2014/TT-BTNMT dated 30/6/2017 of the MONRE regulate in

detail on assistance, compensation and resettlement when the government

recover land;

18. Decision No. 55/2014/QĐ-UBND dated 20/11/2014 of the Dong Nai proince’s

people’s committee issued regulation on univalent of compensation and

assistance for property when the government recover land in Dong Nai

province;

19. Decision No.12/2015/QĐ-UBND dated 10/02/2015 of the Lam Dong proince’s

people’s committee issued regulation on contents of compensation and

assistance for property when the government recover land in Lam Dong

province.

2.2. Legal document, decision or report of authority agencies related to the

project.

1) Decision No. 3696 / QD-BGTVT dated 04/12/2008 by Minister of Transport on

assigned projects established Restore and renovate Highway 20 connecting the

provinces of Dong Nai and Lam Dong;

2) Decision No. 2868 / QD-CDBVN dated 04/12/2008 of Department of Roads of

Vietnam on the assigned Project Manager Restore and renovate Highway 20

connecting the provinces of Dong Nai to Lam Dong province;

3) Decision No. 775 / QD-BGTVT 30/3/2009 of the Minister of Transport on the

approval of proposals and cost estimates for survey and project implementation

of the Project: Restoration and renovation the Highway 20 connecting the

province of Dong Nai and province of Lam Dong;

4) Decision No. 1142 / QD-BGTVT of the Minister of Transport dated 05/5/2009

on approving the list of applicable standards for projects to restore and renovate

of the National Highway 20 connecting Lam Dong province to Dong Nai

province.

17

5) Decision No. 2856 / QD-CDBVN dated 16/12/2009 of Director of Vietnam

Road Administration approving the bidding results, Package 1: Surveying,

Project construction investment recovery recovery, rehabilitation Highway 20

connecting Lam Dong province to Dong Nai province;

6) Decision No. 3425 / QD-BGTVT dated 30/11/2010 of the Minister of Transport

on approving the investment project of construction and rehabilitation of the

Highway 20 connecting Dong Nai province to Lam Dong Province;

7) Document No. 1250 / TTg-KTN dated 27/07/2011 of the Prime Minister on

investment project of restore and renovate the Highway 20 connecting Lam

Dong province to Dong Nai province;

8) Decision No. 2552 / QD-BGTVT of the Minister of Transport dated 07/11/2011

on approving the adjustment the investment project construction restoration,

renovation the Highway 20 connecting Dong Nai province to Lam Dong

province and separated into 02 sub component projects including project

investment of component I under the form of Build - Transfer (BT);

9) Decision No. 2378 / QD-BGTVT of the Minister of Transport dated 08.12.2013

on approval of investment project of construction and rehabilitation of Highway

20, section Km0 - Km123 + 105,17 in the territory of two provinces of Dong

Nai and Lam Dong under the form of the Build - Transfer contract.

10) Document No. 1842 / TTg-KTN of the Prime Minister dated 12/10/2010 on

implementation of the construction of the by-pass route Bao Loc city, serving

the mining and transporting bauxite from mine of Tan Rai - Bao Lam to the

Highway 20;

11) Document No. 3669 / VPCP - KTN dated 05.24.2012 of the Government Office

for the construction of the by-pass roads of the city of Bao Loc, Lam Dong

Province;

12) Document No. 12534 / BGTVT-DTCT of MOT date 06.10.2014 on reports

about plans to invest additional line items for the by-pass route of Bao Loc city

and Dau Giay junction overpass project to restore, renovating of Highway 20

section Km0 + 000 to Km123 + 105.17;

13) Decision No. 1537 / QD- of the People's Committee of Lam Dong province

dated 15/07/2011 on the approval of investment projects construction of the by-

pass road in the western city of Bao Loc, serving transporting bauxite from Tan

Rai aluminum mines, Bao Lam district to the national Highway 20.

2.3. Vietnam standards and national technical regulations on environment

Applicable Standards:

Items Applicable Standards

Air

quality

- Circular 28/2011 / TT-BTNMT on Regulation technical process of

environmental monitoring of ambient air and noise;

- QCVN 05: 2013 Air Quality – Ambient Air Quality Standards

18

Items Applicable Standards

- QCVN 06: 2009 Air quality - the maximum allowed concentrations of

certain hazardous substances in the ambient air

Noise

and

vibration


environmental monitoring of ambient air and noise;

- QCVN 26: 2010/BTNMT National technical regulations on noise.

- QCVN 27:2010/BTNMT National Technical Regulation on vibration.

Water

quality


environmental monitoring of in land surface water


environmental monitoring of underground water

- QCVN 08-MT:2015 National technical regulation on surface water.

- QCVN 09-MT:2015 National technical regulations on groundwater.

- QCVN 14:2008 National technical regulations for domestic

wastewater.

- QCVN 40:2011: National technical regulations on industrial

wastewater

Soil

quality


environmental monitoring of soil quality;

- QCVN 03-MT:2015 National technical regulations on permissible

limits of heavy metals in soil.

Solid

waste

- TCVN 6696:2000 Solid waste, sanitary landfills, general requirements

for environmental protection

- QCVN 07: 2009/BTNMT - National technical regulations for

hazardous waste threshold

Sediment - QCVN 43:2012/BTNMT – National Technical Regulation on

sediment quality

2.4. Resources of documents and data

1. Reference source of documents and data

1. The documents of the economic - social conditions in the projects region;

2. Documentation of the statistical situation of meteorology, hydrology,

topography and soil of the implementation area of the project;

19

3. Map of the area ratio 1/50000, 1/25000;

4. The documentation of methods, assessment used in the EIA report.

2. Source documents and data created by project owner

1. Demonstration “The project ofrestoration and improvement of National road

No 20 connecting Dong Nai province to Lam Dong province" by consulting of

survey design and construction - Ministry of Defence.

2. Report on the recommended additional investment categories: expanding

intersections of the Dau Giay overpass and the by-pass route ofBao Loc

citymade by BT20 – Cuu Long JSC established in May 10/2014

3. The survey data, community consultation data and actual measuring off

environemntal conditions implemented by the project area by Scientific and

Technological Center for Environment Protection in Transportation

3. IMPLEMENTATION OF THE EIA REPORT

Implementation of the Environmental Protection Law 2005, in parallel with the

preparation of investment project, the Project Management - Project Management Unit

7 - has signed a contract of consulting services with Institute of Transport Science and

Technology for report on the environmental impact assessment for the "Project

construction investment for rehabilitation and improvement of National road No.

20, the section from Km0+000 to Km123+105,17 in Dong Nai province and Lam

Dong province in the form of Build – Transfer contract (BT) – Project construction

investment supplementing items: Expansion Dau Giay flyover – intersection and

Bao Loc city bypass route”.

- Project owner: PMU 7

- Consulting service office of EIA report:

Institute of transport science and technology

Head: Associate Prof. Dr Nguyen Xuan Khang

Add: 1252 Láng street - Đống Đa district - Hà Nội

Tell: +84437663977/+84438347980 Fax: +84437663403.

EIA process was coordinated by the following agencies:

1. BT20 - Cuu Long Join stockcompany

2. People's Committee, Fatherland Front Committee of communes and wards in

the project area.

3. Truong Son consult company.

20

The participants in this environmental impact assessment report including:

No Full name Major Position/

Assignment

Signature

Owner – PMU 7

1 Hoàng Tuấn Khoát, MSc Transport

Vice general director –

Leader of making EIA

report

2 Đặng Văn Dũng, Eng Transport

Head of unit of projec

management no.1 –

member of making EIA

report

3 Hồ Xuân Thắng, Eng Transport

Deputy head of unit of

projec management no.1 –

member of making EIA

report

4 Nguyễn Mạnh Thoát, Eng Transport

Deputy head of unit of

plan – member of making

EIA report

EIA Consultancy - CEPT

5 Phạm Tiến Sỹ, MSc Environmental

science

General manager of

making EIA report

6 Trần Văn Toản, MSc Environmental

science

Consult stakeholder,

make IEA report

7 Phan Thị Minh Hoa, MSc Environmental

science

Consult stakeholder,

make EIA report

8 Nguyễn Thị Minh Hiền, MSc Environmental

science

Explore at site, make

EIA report

9 Phạm Thị Trà, MSc Chemical

tecnology

Moniter, collect

environmental samples

and analyze in LAB

10 Đinh Trọng Khang, MSc Environmental

science

Explore at site, make

EIA report

11 Nguyễn Ngọc Quang, Eng Transport Record vibration level

12 Lê Thị Hồng Thái, Eng

Environmental

landscape in

urban areas

Explore at site, monitor

air quality

21

13 Pham Văn Dương, Eng Environmental

technology

Analyze water and

ambient air samples in

LAB

15 Cao Thị Bích Vân, MSs Environmental

science

Analyze water and soil

samples in LAB

16 Phạm Thị Trà Như, Bch Bio-Technology Analyze water and soil

samples in LAB

4. USED METHODSDURING EIA IMPLEMENTATION

a) The EIA methods

a1. Statistical Methods

Used in data processing, document of the natural conditions, meteorology,

regional socioeconomic of districts and towns in which the project go through and the

around area. The statistical methods are applied in chapter 2, characteristics of natural

environmental conditions (topography, geology, meteorology and hydrology) and

economic – socialconditions.

a2. Comparing Method

Used to assess the status and impacts on the basis of comparative measurements

or calculations with the results recorded in the allowable limit, Viet Nam standards and

Viet Nam regulations or of international organizations. This method is applied in

Chapter 2, the current status of the physical components of the environment.

a3. Rapid assessment method

This method is established by the World Health Organization to estimate the

emissions and loads of pollutants in waste water of the project. This method is applied

in Chapter 3, to predict the load and the concentration of dust, air polutants and water

waste from construction activities.

a4. Checklist Methods

This method is used for identification of impacts in Chapter III..

a5. Modelling Methods

The modeling method has been used in Chapter III, including:

Using Gausse model to predict the level and the scope spreaded TSP, SO2, CO,

NO2 and HC;

Using models to predict noise levels decline.

22

Modeling method is applied in Chapter 3, prediction the emissions of air

pollutants and noise in the operation phase.

a6. Expert Method

The method is used mostly during project implementation from inspection step

up the outline, define the scale of studies, environmental issues, a survey of the natural

conditions, ecology, identification and analyze and propose the mitigation measures,

building environmental monitoring program. Expert method is used in all chapters of

the report.

b). Other methods

b1. Social survey method

Investigation, directly interview the communes and towns officers about the

economic - social situations, waste and requirements and their expectations related to

the project.

Investigation, directly interview households in the project area on issues related

to environmental protection of the project.

Results of the implementation of this method are used in Chapter 2, section of

Ecosystem Status and economic - social conditions.

b2. Measurements and environmental quality survey methods

The equipments used for sampling and measurement of environmental quality

indicators are calibration certificated.

The methods of measurement and environmental analysis used in this report

comply with the regulations of the Ministry of Natural Resources and Environment

Vietnam.

Results of the implementation of this method is used in Chapter 2, section of

quality components of the physical environment.

b3. Analytical methods, data processing

The method of analysis of surface water, groundwater and sediment are

compliant with current Viet Nam standards and Viet nam regulations. The analysis

method is presented in detail in the attached analysis in the Appendix. Results of the

implementation of this method is used in Chapter 2, section of quality components of

the physical environment

23

CHAPTER I. PROJECT SUMMARY DESCRIPTION

1.1. Name of the project

Project construction investment for rehabilitation and improvement of National road

No. 20, the section from Km0+000 to Km123+105,17 in Dong Nai province and Lam Dong

province in the form of Build – Transfer contract (BT)

1.2. Investor Authoritative Government

agency

: Ministry of Transportation.

Representative of authoritative

Government agency

Representative

:

:

Projects Management Unit 7.

Nguyen Chung Khanh, general director

Add : 63 Nguyen Xi, ward 26, Binh Thanh district, HCMC

Tel : 083.8040735

Fax : 083.8040930

Investor : Join stock company BT20 – Cuu Long

Representative : Do Ngoc Dung, Director

Add : 649/36 Dien Bien Phu, ward 12, Binh Thanh district,

HCMC

1.3. Point of the project components

1.3.1. The new component

1.3.1.1. The area expanding Dau Giay flyover intersection – Km0 National road No. 20

This is an area of the beginning point of the project of National road No. 20 (km0),

crossing with National road No. 1A at Km1832+400 and Km0 – Provincial road 769

belonging to Thong Nhat District, Dong Nai Province.

Figure 1.1: Present condition of intersection area

24

According to present condition as well as document of TKKT of the Project

restoration and improvement of National road No. 20, it is a level intersection, traffic

is organized by signal light, some directions are channelized by traffic cannel.

However, flow of vehicles through intersection is big so that it often has a big traffic

jam. It effects significantly on travel capacity of National road No. 1A as well as

National road No. 20 from Ho Chi Minh City to Da Lat.

- Starting point on the NH No1A: at Km1831+870. Coordinates: X=1210380

(m); Y=351740 (m).

- Ending point on the NH No1A: at Km1833+800. Coordinates: X=1210400

(m); Y=351500 (m).

- Ending point of the NH No20: at Km1+887. Coordinates: X=1212150 (m);

Y=433150 (m);

- Ending point of the DT769: at Km0+500. Coordinates: X=1209880 (m);

Y=351160 (m).

1.3.1.2.The area proposed to contract route of National road No. 20 to avoid from Bao

Loc City

Centre of Bao Loc City is far from centre of Da Lat City 120km in the South, far

from Ho Chi Minh City 180 km in the North. National road No. 20 through Bao Loc

City from Km108+458 to Km130+000, in which section passing centre of city from

Km119 - Km123+105,17, currently city has had planning to strengthen a scope along

National road No. 20.

Bao Loc City Bypass follows construction planning of Bao Loc City in the South

of city, from Loc Chau commune (the intersection with National road No. 20 at Km

114+100) in B’Lao and Loc Son communiest Loc Nga commune, then connects to the

National road No. 20, so it is in the right of current National road No. 20.

- The starting point: Km0 (Km114+100, National road No. 20) belongs to Loc

Chau Commune, Bao Loc City.Coordinate: 11° 30'54,8" N - 107°45'29,4" E.

- The ending point: Km15+470 (Km128+800, National road No. 20) belongs to

Loc Nga Commune, Bao Loc City. Coordinate: 11° 31'59,4" N - 107°30'52" E. Total length of investment route 15,47Km

25

Figure 1.2: Overall layout of Dau Giay intersection

Residental area

Gasoline

station

Thong Nhat

district’s

Cemetery Dau Giay

intersection

Residential area

Lac Hong

University Residential area

Dau Giay

gasoline station

26

Figure 1.3: Overall layout of Gia Duc brigde

Notes:

: Old bridge;

: New bridge.

27

Figure 1.4: Overall layout of La Nga bridge (old bridge)

28

Be Van Dan primary school

Nam Phuong pagoda

Dau Giay flyover

Lac Hong university

Nghĩa trang liệt sỹ

Gas station

Bui Thi Xuan primary school

Kim Dong 2

nursery school

Loc Son

industrial park

Lam Dong new

general hospital

Loc Son II junior high school

Figure 1.5: Diagram of Bao Loc bypass

Starting point

Km114+100,

National road No. 20

Ending point

Km128+800,

National road No. 20

29

1.3.2. Relationship of the Project with existing objects

1.3.2.1. The area expanding intersection of Dau Giay flyover - Km0 National road

No.20

This is the starting point of the project Km0 – National road No. 20, crossing

with National road No. 1A at Km1832+400 belonging to Thong Nhat district, Dong

Nai province. The land area of the project belongs to the safety traffic road corridor

land of National Highway No 1, No 20 and DDT769. This area is being used for

busines, cultivation or landscape. In study area, the project has relationship with

objects as following:

Natural objects

Traffic system

- Road traffic:

+ National road No. 1A passing through area from Binh Thuan to Dong Nai is

currently being invested, constructed, reformed ground and road surface of section

Phan Thiet – Dong Nai, the project of Dau Giay flyover is implemented in National

road No. 1A at Km1832+400;

+ Freeway HCM City – Long Thanh – Dau Giay: has a starting point at

intersection An Phu, District 2, Ho Chi Minh City, ending point National road No. 1A

at Km1829+850, station National road No. 1A, total the length of route 54,794km.

Scale of free way type A with Bn = 27.5m currently has been completed construction

work and opened to traffic. This route is far from location of construction place of the

project about 2,7Km.

+ The project of construction of free way of Dau Giay – Lien Khuong: The

starting point at Km1829+850 in National road No. 1A (about Km54+794.07 location

of free way of Ho Chi Minh City – Long Thanh – Dau Giay), the ending point at about

Km208+250 in the free way Lien Khuong - Da Lat. Free way standard level A, design

speed depends on sections changing from 100 - 120 km/h. Cross section scale

Bn=25.5m, sections passing town Bn=27.50m create a separating strip landscape.

+ Bien Hoa City bypass project is under the form of BOT: From the starting

point of the project Km0+000 (location of project) – at the same with Km1851+714

(location of National road No.1), other crossing routes with North-South railway

(about Km1+000 location of Bien Hoa City bypass, at the same with Km1679+870

location of Hanoi – Ho Chi Minh City railway) to avoid Bien Hoa City, depot Long

Bình crossing at the same level with Provincial road 15, then next to National road No.

51 (about Km5+000 location of National road No. 51),total route is 12.050,7 m.

+ Provincial road 769: This is local route of Dong Nai Province, with road

structure is asphalt concrete and the width of road surface of 7m. Provincial road

Hìn

h 1

.1. S

ơ đ

ồ h

ướ

ng tu

yến

của D

ự án

30

769crosses with the project of constructing Dau Giay flyover in National road No. 1A

at Km0.

- Railway traffic: In the project area, North South railway passes this area,

however the distance between place of building Flyover and this railway is fairly far

(about 1.9 km) so that construction activities in the future will not affect directly on

operation of trains.

- Water traffic: The project area is in geologic ground of old aggradations plain

so there is midland type transferred from Central South plateau. So that, system of

water traffic is not developed here, the nearest waterway is Dong Nai River and far

from prepared construction site about 25 - 30km.

River, stream

The project area has midland type so system of river, stream often is developed

slightly; distance from the project area to tributaries of Dong Nai river system is about

25km.

Socio-economical objects

- Inhabitant area: The project implementation area is in the centre of Thong

Nhat District, so there are crowed inhabitants surrounding of place of building

Flyover, people mainly live on two sides of National road No. 1, provincial road 769

and in the left of National road No. 20, the distance from housing to road edge is from

2-4m.

- In addition, area surrounding Dau Giay junction there are some different

socio-economical objects such as:

Table 1.1. Socio-economical object in area of building Dau Giay flyover

No Place name Distance

1 Lac Hong University (branch 2) 99m in compared with intersection

2 Dau Giay market 71m in compared with National road No.

20

3 Martyrs Cemetery of Thong Nhat District 300m in compared with intersection

4 Inhabitants in the left of National road

No. 20

6-10m in compared with National road

No. 20

5 Inhabitants in the left of National road

No. 1

10-15m in compared with National road

No. 1

6 Inhabitants in two sides of provincial

road 769

7-10m in compared with provincial road

769

7 Dau Giay Petrol Station 34m in compared with intersection

8 Dau Giay Hospital 900m in compared with intersection

9 Dau Giay High School 1.100m in compared with intersection

1.3.2.2. The area that is suggested to build National road No. 20 to avoid Bao Loc City

31

The project of National Highway 20 (bypass of Bao Loc city) is a new route, the area

of land acquired by the project are mainly agricultural land and residential land of local

residents beside a small part of public land such as roads, drainage ditches. The relationship of

the project section with other affected objects as follows:

Natural objects

Traffic system

Passing through Bao Loc City there are two National road: National road No.

20 in the East goes to Da Lat City with length of 120km. In this National road No.,

there are fishbone branches: At Di Linh Town – Di Linh District the branch is next to

National road No. 28 in two directions: the North going to Dak Nong Province, the

South going to Binh Thuan Province. Lien Khuong T-junction – Duc Trong District,

the branch is next to National road No. 27 going to Dak Lak province in the North. Ba

Phi Nom T-junction, the branch is next to National road No. 27 in the east going to

Ninh Thuan.

National road No. 55 is from Loc Son T-junction (Le Minh Son T-Junction) to

Ham Thuan – Da Mi hydroelectric power. National road No. 55 together with National

road No. 28 will create a roundabout road traffic network at the gate of North west of

Binh Thuan Province, connect the South of Tay Nguyen (Bao Loc City) with seashore

of East South, create a new motive force to develop the society, economy, national

security not only in Binh Thuan province but also the South of Tay Nguyen and East

South with fast speed. It is able to open more tours from Vung Tau – Binh Chau thermal

spring – La Gi – Bien Lac pond – Da My pond, Da Lat and vice verse..

Foreign traffic of Bao Loc City: mainly operate National road No. 20 from Da

Lat City to the South of city, passing Bao Loc mountain pass to Da Huoai – Tan Phu –

Dinh Quan, meeting National road No. 1 at Dau Giay intersection, section Bao Loc –

Dau Giay has length of 120 km, in the future National road No. 20, Da Lat – Dau Giay

free way will pass this section.

Interior traffic network is invested completely to centre of communes, wards.

River, stream

The area of construction site for Bao Loc City bypass has a system of river,

stream that fairly developed, the following routes are along Dai Binh River, the

distance between the road and the river is about 500-800m and passes Dabrim stream

at Minh Rong Bridge. Then ending point is at Km128+800, this place is far from Dai

Ngan river about 700m.

Socio-economic objects

Bao Loc City bypass passes area that mainly produce agriculture, inhabitants

live concentratedly at the starting point (Km113+727, National road No. 20 – Loc

32

Chau commune) and the ending point (Km128+800, National road No. 20 – Loc Nga

commune). Households that do not belong to removal aspect are far from prepared

route at least 3 – 5m, in addition, there are some socio-economic objects as followings:

Table 1.2. Socio-economic objects in the area of constructing Bao Loc City bypass

No Place name Distance

1 Be Van Dan primary school 50m in compared with bypass

2 Nam Phuong pagoda 150m in compared with bypass

3 Bui Thi Xuan primary school 230m in compared with the ending

point of bypass

4 Kim Dong 2 kinder garden - B’Lao Ward 50m in compared with bypass

5 New Lam Dong Hospital 200m in compared with bypass

6 Loc Nga II Secondary school 300m in compared with bypass

7 Loc Son industrial zone 500m in compared with bypass

1.4. Main content of the Project

1.4.1 The project goals

The NH No. 20 connects Dong Nai province to Lam Dong Province after being

restored and renovated, it will bring many positive effects on the society, contributing

to promote the economic, security and defense developments of the two provinces of

Dong Nai and Lam Dong in particular and the South East region and the Central

Highlands in general. The addition of two additional items for the project , including:

Building the overpass bridge of Dau Giay and the bypass of Bao Loc in order to:

- Restricting the traffic jams and traffic accidents at intersections Dau Giay and

ensuring the good travel possibilities for 1A and QL20 from HCM City to Da Lat city.

- Offloading the traffic through the city center of Bao Loc and ensuring the

traffic safety during the transportation of alumina from Tan Rai plant to Dong Nai, and

creating conditions for the city to construct and develop according to the planning,

contribution for Bao Loc city to become the key economic zone in the south of Lam

Dong province.

1.4.2. Scale of constructing, widening intersection of Dau Giay flyover

A. The present operation of the NH No20 and No1A in the intersection of Dau

Giay

- Highway No 20: This is the beginning of the Highway No 20 and has been

deployed in the construction in the project of restoring and renovating QL20, section

Km0 - Km123 + 105.17 on the territory of two provinces of Dong Nai and Lam Dong

with the size of Bn = 12m , Bm = 7m. The research results has showed that the traffic

33

on NH No20 are great, especially in the section from Km0 - Km7, equivalent 18000-

20000 CPU/day and night.

- NH No 1A : The NH No1A is located in the project of upgrading and

expansion of National High No 1A, section from Phan Thiet - Dong Nai with Bn =

18m , Bm = 16m . According to forecast results has said that the traffic on NH No1A

(section Phan Thiet – Dong Nai) are great, equivalent 19.827 – 32.388 CPU/day and

night.

B. Construction scale of the project

Building the overpass bridge in the direction to NH No1A, assigned below by

toroidal self control and improvement and expansion the NH No20, section from the

intersection to Gia Duc bridge (Km1 + 877) with a length of 1,88km. The following

parameters in particular as follow:

- Average map: Based on current condition of terrain and architecture of the

area, the route’s center line of the basical directions still keeps following the existing

road’s center line, excepting for National road No. 1, aiming to restricted impacts on

compensation and ground clearance, the route’s center line is deviated to the right

following the direction from Phan Thiet – Dong Nai at 4m comparing with the old

route’s center line.

Longitudinal section design

- Longitudinal section of flyover: Design should ensure clearance of

intersection road below H=4,85m, route of existing National road No. 1 has

longitudinal slope 3,67% in the direction to Dong Nai, so to limit impact scope of

intersection, longitudinal section of bridge in the direction of Phan Thiet is designed

with slope i = 0%, in the direction is designed with big slope i = 4%.

- Longitudinal section design basically follow the road to salvage maximum old

foundation, road surface.

The volume and scale of the project categories under different stages in detail as

follows:

b1. Construction scale in preparation stage

At this stage, the project's activities are mainly related to the clearance.

According to the results, it has showed that the land acquired land by the project is

mainly safety traffic corridor land and public land, a small part of living land of the

local people, which leads to an area of the house dismantled which are mainly

restaurants and temporary housing.

Table 1.3. Clearance volume at intersection of Dau Giay

No

Items

Unit

Volume

(accoding to the overpass NH 1A

34

option)

Households m2

1 Number of effected

housholds Household 100

- Temporary housing Household/m2 12 1.110

- Tole roof housing Household/m2 56 960

- Level 4 house Household/m2 4 42

- Dead-level roof Household/m2

- Building Household/m2 1 22

2 Electric lighting poles cột

27

3 Optical fiber M

1,126

4 Living land m2 2.500

5 Farmland m2 5.000

6 Public and special use lands m2 7.500

b2. Main construction stage

The main specifications of the works in the Dau Giay intersection as follows:

a. Horizontal section in direction of National road No. 20

According to planning of Dong Nai province, National road No. 20, section

passing Dau Giay area has cross section Bn=26m. It is proposed to add a plan of

investment to widen National road No. 20 section from intersection to Gia Duc bridge

(Km1+880) with length of 1,88km under planned scale of locality to construct

completely intersection to avoid from investing, constructing, widening afterward to

effect on traffic of intersection.

So that, cross section from Km0 - Km1+880 has scale as following:

- The width of foundation Bn = 26m

- The width of road surface: Bm = 2x12m=24m

- The width of middle separator: Bdpc = 2m

- The width of longitudinal drainage: Blongitudinal drainage= 2x2,6m=5,2m

Total the width of foundation + longitudinal drainage: B = 31,2m. Scope of

longitudinal drainage in side separator follows planning. Currently, locality has

compensated for ground clearance under planning so there are not arisen costs of

compensation for ground clearance.

b. Horizontal section in direction of National road No. 1:

Usual section under existing scale of National road No. 1, cross section has:

- The width of foundation: Bn = 18,5m

35

- The width of vehicle lane road surface: Bm = 15m

- The width of reinforced road side: Bgcl = 2x1,25m=2m

- The width of soil side: Bsoil side= 2x0,5m=1m

Section constructing flyover, cross section has:

- The width of foundation: Bn = 34,8m

- The width of flyover:

+ The width of upper bridge: Bc = 16m

+ The width of under bridge clearance: Bc = 17m

- The width of road in 2 sides:

+ The width of vehicle lane road surface: Blcg = 2x(2x3,5m) = 14m

+ The width of safety range: Bdat = 2(2x0,5m) = 2m

+ The width of longitudinal drainage: Longitudinal ditch = 2x0,9m=1,8m

c. Horizontal section of intersection path:

Paths in intersections are designed under scale, including:

- The width of foundation: Bn = 9m

- The width of vehicle lane road surface: Blcg = 2x3,5m=7m


- The width of soil side: Soil side = 2x0,5m=1m

In directions, it is necessary to build longitudinal drainage system, crossing section

has:

- The width of foundation: Bn = 9m

- The width of vehicle lane road surface: Blcg = 2x3,5m=7m


- The width of soil side (on the left or right): B soil side = 0,5m

- The width of longitudinal culver (on the left or right):

Blongitudinal culver= 0,9m

d. Design of road surface:

Road surface of route of National road No. 20:

- Resilient modular is requested: Eyc ≥ 180 Mpa according to resilient modular

of the project restoration and improvement of the National road No. 20 section Km0 -

Km123+105,17.

36

- Road surface structure: is designed according to general structure of road

surface of the project restoration, improvement of National road No. 20 section Km0 -

Km123+105,17 approved TKKT by Ministry of Transportation, detail:

According to audit result of carpet coat, carpet coat structure for above cases

from upper to down as following:

Structure I.1: Embanking and renewing:

+ 5 cm tight asphalt, scattering hotly

+ Bond asphalt 0.5 kg/m2

+ 7 cm tight asphalt medium course, scattering hotly.

+ Bituminous tack coat 0.5 kg/m2

+ 10 cm black crushed rock

+ Bituminous prime coat 1.0 kg/m2

+ 28 cm Crushed aggregate base course.

+ 35 cm Crushed aggregate subbase course.

+ Ground base 30cm K ≥ 0,98, E0 = 44 MPa

Road surface of National road No. 1 and paths:

- Resilient modular is requested: Eyc ≥ 160 Mpa according to resilient modular

of the project restoration and improvement of the National road No. 1 section Phan

Thiet – Dong Nai.

- Road surface structure: is designed according to general structure of road

surface of the project of widening the National road No. 1 approved TKKT by

Ministry of Transport, detail:

Structure of widening and renewing (Structure 1A):

+ 6 cm tight asphalt 12,5.

+ Bituminous tack coat 0,5 kg/m2

+ 7 cm tight asphalt 19

+ Bituminous prime coat 1,0 kg/m2

+ 30 cm Crushed aggregate base course I

+ 35 cm Crushed aggregate subbase course.

+ Ground base30cm K ≥ 0,98, Eo = 42 Mpa.

Volume of construction of Dau Giay intersection is shown in Table 1.4

details below:

37

Table 1.4. Road construction volumes at intersections section Dau Giay

TT Sections

Length of

construction

Volume

Unsuitable

soil

Old

roads

Soil of

C3

Replace

soil K98

Digging

mold

soilC3

Diging Rolling

K95

Embank

ment

K95

Embank

met K98

Digging

trench

Emban

kment

of

trench

Texture

d

pavemen

t

Tacked

plastic

area1,0k

g/m2

Asphalt Pavement Embankment of old

road Retrieve

d area

Grass

area

Structur

e I.1.A

Structur

e I.2

Structur

e II.1

Structur

e II.2

Structur

e II.3

BTNC

19

CPĐD

loại I

m m3 m3 m3 m3 m3 m3 m m3 m3 m3 m3 m2 m2 m2 m2 m2 m2 m2 m3 m3 m m2

1 Hà Nội - TP

HCM branch 997,71 3.672,64 -

318,5

1.921,98

1.763,56

43,72

8.705,21

6.712,81

2.594,16 798,17

448,97 -

6.311,79 - -

8.705,21

116,90

5.845,08

349,81 -

34.520,77

1.422,7

3

2

Hà Nội - TP

HCM (Upper

branch)

997,71 676,93 - -

30,49

13,90 -

102,12

25.516,5

4

2.476,19 - -

1.452,80

3.771,52 - -

8.670,96

72,28

3.613,89

85,35

472,47

13.154,17

-

3 QL1 - Đà Lạt

branch 300,00 1.198,89 -

1,80

213,89

731,53

0,38

2.837,63

547,53

1.036,20 260,71

148,51

2.975,38

114,00

3.117,76

2.991,14 - - -

114,00

246,14

6.840,06

553,75

4 Hà Nội -QL20

branch 219,35 657,34 - -

282,64

37,77 -

1.486,71

297,17

463,26 125,12

65,93 - - - -

1.544,14 - - - -

2.270,75

354,30

5 QL20 - TP HCM

branch 215,45 250,82

56,79 -

86,86

56,97 -

335,37

387,20

100,46 58,15

26,42

960,36

960,36 - -

335,97 -

960,36 -

329,91

2.477,68

405,06

6 QL1 - TL769

branch 44,80 19,05 - -

10,04

3,35

-

33,98

18,05

10,19 - -

176,75

176,75

- - - -

176,75 -

43,02

340,22

20,06

7 Km0+300 - Km1 755,06 3.228,16 - -

162,70

1.104,68

314,30

6.350,61

8.788,54

2.222,12 - -

8.373,16 -

6.350,61

8.373,16 - - - -

1.180,48

21.191,10

3.053,89

8 Km1 - Km2 1.007,12 4.560,40 -

438,91

4.051,12

1.555,92

257,84

18.786,40

5.411,53

5.994,69 - -

4.867,65 -

10.466,44

10.511,15

- - - -

1.763,26

17.963,01

1.660,26

Total

4.537,20 14.264,23 56,8

759,21

6.759,7

5.267,7

616,24 38.638

47.679,4

14.897,3 1.242,15

689,83

18.806,1

0

11.334,4

2

19.934,8

1

21.875,4

5

19.256,2

8

189,18

10.596,0

8

549,16

4.035,28

98.757,75

7.470,0

5

38

b.2.2.Bridge design

- Bridge is designed permanently by normal steel reinforced concrete and

prestressed steel reinforced concrete.

- Design load: HL93, person 0.003MPa.

- The width of bridge: Constructed to be suitable with the width of background

Structure of upper part:

- Bridge with 10 span by prestressed steel reinforced concrete. The length of the

whole bridge: L= 352,72m

- Bridge width B = 0,5m+15m+0,5m = 16m.

- Span diagram: 10x33m, cross section includes 16 beams with distance 1m.

- Main girder having inverse T cross section, by prestressed steel reinforced

concrete with intension fc’=40MPa

- Prestressed cable using 4 sets 12 rope trand 12.7mm according to standard

Grade270 ASTM 416A.

- Bridge desk with depth of 20cm casted in place by steel reinforced concrete

fc’=30Mpa

- Prestressed cable with main beam using kind of rope trand 12.7mm and

15.2mm having low sag according to standard ASTM A416 Grade 270.

- Collar beam, bridge desk casted in place by steek reinforced concrete

fc’=30MPa.

- Hand railing made by galvanized steel with hot-dipping.

- Bridge surface includes 3 layers:

+ Asphalt with depth of 7cm.

+ Scattering bituminous tack coat 0.5kg/m2.

+ Water proofing layer Radcon7.

- Bridge bearing by elastic steel-reinforced.

- Extension joint: Using coma extension joint

Structure of down part:

- Abutment, bridge pier are casted in place by steel reinforced concrete

fc’=30MPa. Foundation of abutment place on bored cast –in- place pile with diameter

D = 1.5 m, length = 43.0m.

39

- Bridge foundation, abutment, and pier: Depending on actual geologic

condition for each bridge, it can use shadow foundation structure, reinforced concrete

pile foundation, or auger cast piles foundation.

Approach roadway:

- Approach roadway after bridge abutment like structure of NH no.1A as

shown above, the two sides build retaining walls.

- Construction quantitis of Dau Giay flyover is shown in Table 1.5 below:

40

Table 1.5. Construction volume of Dau Giay flyover

N

o Items

Steel (Kg) Concrete (m3) Main

girder

(girder

)

Rubbbe

r

bearing

(unit)

Ancho

r

6-12

(unit)

Duct

D90/9

6

(m)

Ceme

nt

morta

r

40Mp

a (m3)

Expeansio

ni joint

(m)

Wate

r

proof

(m2)

Mediu

m

grain

asphalt

concret

e layer

- 7cm

(m2)

Bored

pile

length

D=120

0 (m)

Excavatio

n (m3)

Embankme

nt (m3)

Embankme

nt K95

(m3)

Asphalt

sweepin

g

behind

abutme

nt (m2)

Buffer

macada

m

(m3)

Reinforce

d wall

area (m2)

Road

surfac

e area

(m2)

Sign

(unit

)

Prestresse

d steel

CB240-

T

CB300-

V

CB400-

V

Shape

d steel 40Mpa

30Mp

a

25Mp

a

10Mp

a

SPAN STRUCTURE

1

Bridge

surface

overlay

4485.

0 4485.0

2 Bridge deck,

parapet ledge

223243.2

1183.3

3 Formwork 46827.0 217.8

4 Handrail +

drain pipe 8970.0

5 Main girder

I33 113036.0

278359.

2 6020.0 1477.8 70.0

6 Horizontal

girder 7017.3 135.6

7

Expansion

joint +

bearings

808.3 140

4.99 46.2

Sum 113,036 - 556255.

0 -

14990.

0

1,477.8

0

1318.9 217.8 -

70.00 140.0 - 5.0 46.2

4485.

0 4485.0

ABUTMENT

1 Abutment 8.3 23764.0 8289.8 552.7 19.0

973.3 482.3 164.2 88.40

2 Handrail on

abutment 395.2

3

Transition

deck behind

abutment

4.1 3343.9 2908.5 41.1

526.1 115.4

4 Bored pile 1091.4 15010.5 60025.3 680.85

602

Sum 1103.8 42118.4 71223.5 395.2 1233.5 41.1 19.0

602.0 973.3 482.3 526.1 164.2 115.4 88.4

BRIDGE PIER

1 Pier cap 18090.4 562.7 24920.3 52252.2 803.9 108.0 864.0 19.4

2 Pier body,

foundation 14005.3 92270.2 823.8 62.5

3467.9 2279.9

3 Bored pile 4209.6 57897.7 231526.

0

2626.1

2

2322

Sum 18090.4 4772.3 96823.3 376048.

5 803.9 3450.0 62.5 108.0 864.0 19.4 2322.0 3467.9 2279.9

OTHER ITEM

1 Bridgehead

road

- 10678.5 3955.0 4.0

2 Reinforced

wall

- - - 1,791.71

Sum

- 10678.5 - 1791.7 3955.0 4.0

Total 131126.4 5876.1 695196.

7

447272.

0

15385.

2 2281.7 6002.4 258.9 81.5 70.0 140.0 108.0 864.0 24.4 46.2

4485.

0 4485.0 2924.0 4441.2 2762.2 11204.6 164.2 115.4 1791.7 4043.4 4.00

41

c. Bridge end path:

- Bridge end path after structure parapet wall is as same as the route, two sides

have barrier with pier.

1.4.2.2. Bảo Lộc city bypassing route:

This is the new route and is designed following Bao Loc construction plan to the

South from Lộc Châu commune to Lộc Nga commune, on the right of National highway

no.20.

- The head of the route: Km0 (Km114+100, National highway 20) in Lộc Châu

commune, Bảo Lộc city.

- The end of the route: Km15+470 (Km128+800, National highway 20) in Lộc

Nga commune, Bảo Lộc city.

General technical data:

Technical designing

From the head of the route, Km114+100 of National highway 20 turn right,

along Đại Bình river from Lộc Châu commune, acorss B’Lao ward, Lộc Sơn ward,

across National highway 55 then across Dabrim riverin Lộc Nga communethen turn

leftand head toNational highway 20 at Km128+800. Technical data followed by level

III mountain road standardwhich is TCVN4054-2005. Designing results as following:

Curve Peak Proportion (%)

R = 125 0 0%

125 < R ≤ 250 14 73,68%

250 < R ≤ 1.500 3 15,80%

R > 1.500 2 10,52%

Do not plug the

curve

0 0%

Total 19 100%

Vertical monitoring design:

* The controlled level of the route:

- Water level: Altitude of red line is designed to satisfy two conditions:

shoulder height of the route is higher than water level calculated at least 0.5 m with the

frequency P = 4% and the bottom of the pavement is higher than water level often at

least 0.5m;

- At positon of the overheadbridge, vertical monitoring design have to ensure

clearance height;

- Altitude of planned construction of residential area along the route;

42

- Using old road, enhancing design to ensure required elastic modulus.

* Designing result.

Longitudinal section result:

Slope Length (m) Proportion (%)

0% < i ≤ 3% 6.243,91 40,37%

3% < i ≤ 5% 6.269,99 40,54%

5% < i ≤ 7% 2.953,67 19,10

Total 15.467,57 100%

Horizontal monitoring design

According to the development plan of Ministry of Transportin Bảo Lộc city,

horizontal monitoring design has Bn = 30m. Phase 1 will follow general construction

of National highway 20, in particular:

Category Approval planned

section

Horizontal section

phase 1

Total roadbed width 30 m 12 m

Traffic width 2 x 7,5m = 15 m 2 x 3,5m = 11 m

Sidewalk 2 x 7,5m = 15 m

Reinforced roadside 2 x 2m = 4m

Soil roadside 2 x 0,5m = 1 m

a. The total amount of the project in the preparation phase

The major activities includes: Land clearance and preparing work roads, in

particular:

Table 1.6. Land clearance amount in Bảo Lộc city bypassing route

No. Category Unit

Amount

Lộc Châu

commune B'lao

ward Lộc Sơn

ward Lộc Nga

commune

(Km0-

Km4+620)

(Km4+620

-

Km6+650)

(Km6+650-

Km10+950)

(Km10+950

-

Km15+470)

1 Houses affected House 129 101 174 121

2 Resettlement House 74 16 2 21

3 Temporary house houses/m2

4 Roof house houses /m2 19/1.154 1/47

5 Level 4 house houses /m2 167/3.121 1/230 6/418 13/1135

6 Flat roof house houses /m2

7 Building houses/m2 1/100

43

8 Fence M 132

9 Residential land m2 3.292,89 1.895,49 4.669,53 5.894,43

10 Agriculture house m2 2.195,26 1.263,66 3.113,02 3.929,62

11 Pond pond/ m2 2/530

2/1158

12 Coffee land m2 98.786,7 56.864,7 140.085,9 176.832,9

13 Hill land m2 5.488,15 3.159,15 7.782,55 9.824,05

14 High voltage power

poles Pole

2

15 Low voltage power

poles Pole 18

2 5

16 Telephone pole Pole 5

17 Coffee trees Tree 15.806 9.098 22.414 28.293

18 Tea Tree 211.610

19 Other trees Tree 28.722

Source: Land clearance file

b. The total amount of the project in construction phase

b1. Road

Roadbed design

- Excavation roadbed:30cm top layer have to plough and is compacted with K

0,98 if the roadbed sections’material are soil .

- Embankment roadbed: There are no weak roadbed in the construction route so

the regular techical slope is 1/1,5.

The height of Required compaction for embankment land is 30cm, the height of

the bottom is K 0,98 followed by standard methodand the load capacity is CBR ≥ 6.

The other layer have to ensure the compacted number K 0,95 and load capacity is

CBR≥4.

If the roadbed have slope number over 20%, excavation should be done

mannual, at least 1,0m width. If the soil is inappropriate (organic land), this layer has

to removed and replaced by qualified soil after consulting by engineers, then

compacted. If the land cannot be compactedby machines, it has to be done mannual

with engineers’ guides.

Road surface

According to the results of previous project:

- Required modulus: Eyc ≥ 180 Mpa of the project of upgrading and extension

National highway 20 from Km0 to Km123+105,17.

44

- Road surface design: According to general design of the project of upgrading

and extension National highway 20 from Km0 to Km123+105,17 with the approval of

Ministry of Transport, in particular:

According to pavement audit results, pavement structure as following:

+ 5 cm Asphalt concrete, fine-grained, heat spreader.

+ Sticked asphalt 0.5 kg/m2

+ 7 cm Asphalt concrete, medium grain, heat spreader.

+ Sticked asphalt 0.5 kg/m2

+ 10 cm black macadam

+ Permeable asphalt 1.0 kg/m2

+ 28 cm macadam type I.

+ 35 cm macadam type II.

+ Roadbed soil 30cm K ≥ 0,98, Eo = 44 Mpa

Figure 1.6. Roadbed and road surface of Bảo Lộc city bypassing route

Table 1.7. The total amount of road construction project of Bảo Lộc city

bypassing route

No. Category Unit Amount

A Technical data

I Total length M 15,443.43

II Vertical slope M 15,443.43

1 0% Ê i ≤ 3% M 8,507.08

2 3% < i ≤ 5% M 2,905.72

45

2 5% < i ≤ 7% M 4,030.63

III The radius of the curve Cái 20.00

1 R = 125 Cái -

2 125 < R ≤ 250 Cái 13.00

3 250 < R ≤ 1500 Cái 6.00

4 R > 1500 Cái 1.00

5 No curve Cái -

B Construction amount

I Roadbed

1 Excavation and embankment m3 3,712,270.74

2 Total amount of excavation m3 151,926.42

+ Excavation of soil C4 m3 2,983,337.05

+ Trench excavation m3 5,778.72

+ Immediate excavation m3 3,399.20

+ Excavation of unesscessary soil m3 38,129.70

+ Excavation of mold m3 88,747.72

+ Ploughing K98 m3 32,534.03

3 Total amount of embankment m3 560,344.32

+ Embankment of K95 m3 541,965.52

+ Embankment of K98 m3 18,378.80

4 Planting grass in slope m2 102,765.73

5 Appropriated land m2

II Road surface

1 New m2 169,708.73

2 Extension m2

III Drain

1 Horizontal drain: Drain 31.00

+ Reinforced concrete round drain D1.00 m Drain 12.00

+ Reinforced concrete round drain D1.50 m Drain 9.00

+ Reinforced concrete box drain (2.00 x 2.00) m Drain 2.00



+ Reinforced concrete box drain 2x(2.50 x 2.50) m Drain 1.00

+ Reinforced concrete box drain 2x(3.00 x 3.00) m drain 1.00

2 Vertical gutter m

+ Vertical reinforced trapezoid gutter M 11,250.00

+ Vertical trapezoid gutter M 9,639.00

IV Bridge

+ Large bridge bridge/m -

+ Average bridge bridge/m 02/156.34

+ Small bridge bridge/m 01/24.1

IV Linked road Position 31

V Intersection and connection Position 3

46

VI Charging station Station

VII Stop and refuelling station Station

VIII Traffic safety

1 Traffic sign Sign

+ Triangle Sign 79.00

+ Round Sign -

+ Rectangle Sign 27.00

+ Other Sign 42.00

2 Km pole Pole 16.00

3 Marked pole, H pole Pole 2,570.00

4 Wavy protection strip m 6,107.00

5 Painted strip m2 6,563.46

Source: Project’s investment file

b2. Bridge

- There is one brige on the range of by pass named Minh Rong II at

Km11+165.59.

- The bridge is permanent designed by reinforced concrete and pre-stress

reinforced concrete.

- Designed weight: HL93, 0.003MPa.

- Bridge width: to be fit the width of the roadbed

Above structure:

- The bridge is permanent designed by pre-stress reinforced concrete, span

diagram: 5x33m. The length: L= 146.30m

- Bridge width: B = (0.5 + 11.0 + 0.5) = 12.0m. Cross section consists of 5

beams I33 with spaced 2.4m.

- The concrete layer on bridge surface is 20cm thick by reinforced concrete

30MPa

- Overlay sphere includes:

+ Grade Asphalt 7cm thick mediators.

+ Plastic Irrigation tack 0.5kg / m2

+ Grade Liquid

- Joints comb-type steel, rubber bearings.

Below structure

- Abutent of the bridge: U-shaped body type abutments by reinforced concrete

BTCT 30MPa. Abutment foundation is put on six reinforced concrete pile diameter D

= 1.0m, the expected length of the abutment A1 is Ldk=9.0m.

47

- Pier of the bridge: special type 2 round pillars, foundation blocks and

cylindrical body made of reinforced concrete 30MPa. Pillars foundation: reinforced

concrete pile foundation diameter D = 1.0m, expected length Ldk = 7.0m.

Path of bridge

The paths of bridge have structure similar to the alignment.

48

Table 1.8. Conctruction quantity of Minh Rong II Bridge

TT Items

Steel (Kg) Concrete (m3) Pillo

ws

and

Joint

s

(pcs /

m

Anc

hor

5-12

(pcs

)

Anch

or 6-

19

(pcs)

ống gen

D65/72

(m)

Ống

gen

D100/

106

(m)

ống

TN+bộ

định vị

(bộ)

Mort

ar

40Mp

a (m3)

Liquid

layer

and

reinforc

ed

concret

e with

thick

7cm

(m2)

The

length

of

bored

pile

D=1000

(m)

Stone

Mortar

10Mpa

(m3)

Soil

Excav

ation

(m3)

Soil

Emtan

k (m3)

Gran

ular

mate

rials

emta

nk

(m3)

Soil

Emtan

k K95

(m3)

Asph

alt

(m2)

Maca

dam

(m3)

Area

of

road

surfac

e (m2)

Sheet

tole

and

signs

(m/pcs

)

Pre-

stress

steel

CB240-T CB300-V CB400-

V

Shape

d steel

40

Mpa

30Mp

a

25

Mpa

10

Mpa

Span structure

1

Bridge

deck

overlay

1815

2

Deck,

parapet

ledge

74720,0 467

3 Formwor

k 18909,3 88,0

4

Drainpip

e

handrail

9900 60,0

5 Home

beams 40370,0 99414,0 2150 615,8 250 4128,3 9,0

6 Horizon

beams 250,9 5830,8 67,8

7

Expansio

n joints +

bearings

347,5 50/22

,66 2,43

Abutment

1 Bridge

abutment 9,9 28399,4 9906,8 660,5 17,6 756,8 420,8 338 145,2

2

Railing

on the

abutment

728

3

The

transition

after

abutment

4,4 3581,6 3115,2 44,0 174 1312,9 220

4 Bored

piles 2799,2 16172,9 103,7 132

Piers

1 Girder of

pier 99,9 11842,4 7276,7 142,7 96 48,0 844,8 6,6

2

Body and

foundatio

n of pier

15700,0 13816,0 628,0 25,3 1196,8 716,8

3 Bored

piles 3562,6 20583,7 132 168

Others

1 Path

ways 101,9 74,0 2211,6 44,9 220 40/4

2

Slope

protectio

n

151,2 101,1 542,5 137

Total 40370 365,1 265106,6 70871,3 1278 615,8 2201,

5 132,0 42,9

50/22

,6

250 96, 4176,3 844,8 60,0 18,0 1815,0 300 253,1 2128,7 1137,6 174 4067,0 338 401,9 365,2 40/4

49

b3. Drainage system

Drainage sewer:

- Sewer is designed according to ISO 9116: 2012 for all types of culverts and

ISO 9113: 2013 for all kinds of box culvert. Some typical tribute is referenced in the

project has been used in Vietnam as NR10, NR18 ... and shaped precast culverts in the

factory.

- Earlier drain made of cement concrete poured in place 16 MPa, yard drains by

cement mortar rubble 10 MPa.

- Culverts is designed permanent by reinforced concrete, ensuring load HL93,

including sewer drainage basin topography and drainage culverts constructed along

irrigation and drainage.

Table 1.9. Amount of horizontal drainage on the route to avoid Bao Loc

TT Location

Design plan

Length (m) Direction

of flow Type Diameter

(m) Design plan

1 Km0+

316.72 Round 1.0 New design 24.06 L-R

2 Km1 +


3 Km1 +

318.80 Box (2.0x2.0) New design 15.14 L-R

4 Km1 +


5 Km1 +


6 Km2 +

154.76 Box 2(2.5x2.5) New design 16.78 L-R

7 Km2 +


8 Km3 +


9 Km3 +


10 Km3 +


11 Km3 +


12 Km3 +


13 Km4 +


14 Km5 +

876.50 Box 2(3.0x3.0) New design 50.55 L-R

15 Km6 +


50

TT Location

Design plan

Length (m) Direction

of flow Type Diameter

(m) Design plan

16 Km7 +


17 Km7 +

552.96 Box (2,5x2,5) New design 42.56 L-R

18 Km7 +


19 Km8 +

93.98 Round 1,5 New design 23.07 L-R

20 Km8 +


21 Km8 +


22 Km9 +


23 Km9 +


24 Km10 +


25 Km12 +


26 Km12 +


27 Km13 +


28 Km13 +


29 Km14 +


30 Km14 +


31 Km15 +


Drainage ditches:

- At the regular segments: the water flows naturally in the channel and the

ploton two sides.

- At the peach background design segment trapezoidal groove records,

including:

+ Trapezoidal groove: groove bottom width b = 0.4 m, h = 0.4 m deep trench,

ditch slopes 1: 1. Applies to the background excavation, slope along i ≤ 3% and

low embankment fragments <0.6m.

+ Free trapezoidal reinforced cement concrete: bottom groove width b = 0.4 m,

h = 0.4 m trench depth, trench slope 1: 1, using reinforced concrete trench 16

51

MPa 10cm under rubble padding 5cm thick. Applies to the background

excavation, slope along i> 3%.

b4. Interactions

There are three interchanges: at begin of route, end of route and interchange

with NR55. Besides, there are interchanges with local roads. Design the same level

in the following forms:

- Simple.

- Channel

- Torus.

The volume of construction of interchanges on the by pass shown in Table

1:14 below:

Table 1.10. The construction volume of interchanges on by-pass Bao Loc

N

o. Location

Interchan

ges

Volume of ecavation Volume of

embankment

Soil

Excavatio

n C4

Chan

el

exca

vatio

n

Lev

el

dig

gin

g

Soil

diggi

ng

KTH

Frame

diggin

g

Rolling

K98 Emba

nkme

nt

K95

Emba

nkme

nt

K98

m3

1 KM0+0.00 -

Km0+100.00 Intersection

with NR20 875.5 79.5 685.9 242.1

2

KM9+532.49

-

Km9+700.00

Intersection

with NR55 122,039.5 925.4 7,279.3 2,569.2

3

Km15+313.85

-

Km15+363.17

Intersection

with NR20 273.0 36.6 71.5 83.3 324.2 91.5 526.5 137.3

b7. Protection works

-Roof tiles embankment:

At the embankment sections on slopes greater horizontal slope roof covering

design 1: 1 or roof covering 1: 0.75, rubble inside ranked recruit tight wedge insert,

outer 25cm mortar XM 10 MPa, with cutoff XM stone mortar with 10 MPa.

- Retaining wall:

In the horizontal position of the greaternatural slope, if the causeway will be

less stable result to easily sliding in the mining process. Design retaining wall to

stabilize the roadbed. Retaining wall design application 86-06X shaped, wall by BT

situ 16MPa.

- Traffic Safety Design: Designing the layout complying with national technical

standards for road signs QCVN No. 41/2014 / BGTVT.

52

1.4.3. Measures to organize the construction, construction technology and

construction items of the project

1.4.3.1. Measures to clearance organization

The clearance work, compensation and resettlement will be signed by PMU 7

with Land Development Centers of Thong Nhat District and Bao Loc City. These units

will take measurements, counting and marking and construction of the overall plan for

site clearance and resettlement for the project.

After the plan is approved, the cost to pay for compensation, support and

resettlement will be transferred to the Land Development Centers who will make

payments to local people.

For eligible households to be relocated and resettled, they will be redeployed

houses in resettlement areas are available on the city Bao Loc, including Ward B'lao

zone 3, zone 3 Loc Tien Ward. This is the resettlement areas are available in the Bao

Loc city, and has been perfecting the infrastructure such as road, water supply, water

supply...

1.4.3.2. Measures to construction organization

Organize multiple nasal construction, the construction process should be

reasonable construction organization and ensure environmental hygiene. Generally, the

construction of flyovers Dau Giay and especially bypassing cities Bao Loc relatively

favorable.

a. For the Flyover Dau Giay

General construction method as follows:

- Arrange ground serving the construction site on the right direction Phan Thiet

- Dong Nai.

- Construction of abutments in the dry season.

- Girder bridge were cast in the site or in the factory and transported to site.

- Putting in place girder span girder with dedicated equipment.

- The specific construction solutions for each stage of the project includes

The specific construction solutions for each stage of the project includes:

Preparing the ground:

Activity of site preparation to be completed prior to construction. The main

content of site preparation includes:

• Clean up the work site: On the land was handed over to construction,

construction contractor will carry out the demolition, clean up the old road structures;

• Prepare roadworks: Includes activities installation works in construction as

53

iron fence installation, installation equipment maintenance stations, construction

worker camps.

Ensure of transportation

The construction of the flyover on the existing road especially NR1, NR20

where have relatively large vehicle traffic, so the contractor need to ensure traffic

safety during the construction process. With the current state of NR1 pavement width

Bm = 15,5m, heart bridge deviated to the right side 4m. The width of new bridge is

16m. Traffic safety plans proposed are as follows:

- Construction before the extension line to the left in the direction away from

Phan Thiet – Dong Nai.

- Build barricades to prevent the scope of bridge construction and bridge

construction organization.

- Organization traffic safety on left of road sections with pavement width Bm =

8m

- To separate lane road marking, traffic management: Using thermoplastic

reflective coating, ensuring traffic participants easily recognizable in all weather

conditions.

- Signs: layout full of warning signs.

- The navigation control: During the construction project, the Contractor shall

arrange moderator traffic when construction activities impede traffic to ensure stability

and safety.

- Construction of bridges and construction of the road to the right line and

complete intersections

Construction organization

Bridge construction measures

Below structural construction:

Structural construction work will be carried out on the shallow bottom part.

Includes the following steps:

+ Abutment: level the ground, bored pile construction, construction encirclement

steel pile, installation formwork for pouring concrete footings, abutments body.

+ Pier: level the ground, bored pile construction, construction encirclement steel

pile, installation formwork for pouring concrete footings, pier body.

Above structural construction:

+ The opposite type T girder with pre-stress reinforced concrete, built in casting

yard and shipping beams to the construction, use and crane girder installation of

54

temporary offices on the top of a pole, construction of bridge deck sequence segment

deck midspan first and then the construction segment deck at top pillars, construction

of bridge deck overlay.

+ Improving railing, expansion joints and bridge deck.

Construction of the bridge paths, the road connecting claws: Perform

construction according to the approved structure.

- Methods renovation and expansion NR20 and PR769

- Preparation of construction ground.

- Digging out the organic layer, cleaning up trees, grass and other materials.

- Embank by small grain of sand with K = 0.90 (if any).

- Embank the roadbed (K = 0.95) and the rest in stages as in the diagram to fill;

- Construction of the class layer pavement

Other works

Construction of the drainage system, lighting, fences, sidewalks ... after the

construction of bridges, roads ensure conformity between the work items.

b. For by-pass Bao Loc City

This is a new alignment construction, construction work will be carried out

through the following steps:

Preparation of ground

Site preparation activities will be completed before the construction. The main

contents of site preparation include:

- Cleaning up the work site: On the land was handed over to construction, the

investor will conduct demolition, clean up the old road structures, felling trees within

the site;

- Preparing construction site: Includes activities installation works in

construction as installation equipment maintenance stations, construction worker

camps,...

Construction organization

Roadbed construction

- Preparation of site construction.

- Digging out the organic layer, clean up trees, grass and other materials.

- Embank by small grain of sand with K = 0.90 (if any).

- Embank the roadbed (K = 0.95) and the rest in stages as in the diagram to fill.

Construction of drainage system

55

- The construction of sewers and drains is carried out simultaneously with the

construction of roadbed.

- Digging pit design to high level. Grooving along 2 sides water collection pit, pit

water absorption ensures always dry and clean. Excavated soil is transported down in

places. Particularly the existing flow position must have a plan in line improvement

construction process.

- Construction of the first wall items, yard drains, foundation drains, sewers,

embankment around culverts and roadbed by design.

- Construction of foundation drains: macadam cushion layer construction and

installation of blocks supporting sewer pipe.

- Installation of a sewer. Before installation need to check altitude foundation

drains, ground clearance of sewer spillage inside foundation, foundation hygiene ...

- Construction of sewer connections.

- Landfills on the two and back sides of the drain and drain thick layer by layer

from 15cm to 20cm and compacted in line with requirements of the roadbed stiffness

(K = 0.95). Note: only embankment proceed after the concrete of drain junctions reach

90% intensity of the design requirements.

- Note: When the culvert construction during the rainy season, need to create

holes arranged pumping pump, always ensure clean dry pit.

Road surface construction

- Construction of macadam layer type II with thickness 35 cm ;

- Construction of macadam layer type I with thickness 28cm;

- Irrigation asphalt 1.0 kg / m2

- Construction of macadam layer with thickness 10cm;

- Irrigation asphalt 0.5 kg / m2 above the macadam foundation;

- Construction of tight asphalt concrete layer, medium grain, heat spreader 7 cm

thick;

- Irrigation asphalt 0.5 kg / m2 above asphalt concrete layer with thickness 5cm;

- Construction of tight asphalt concrete layer, fine-grained, 5cm thick heat

spreader;

Minh Rong bridge construction

56

Construction of abutment

- Level the ground and define the heart of the abutments and piles position.

- Installation of equipment for construction of bored pile

- Drill to create holes, stabilize the hole walls with clay and mortar casing,

wash boreholes, installation and lower steel ring with cranes, pile concreting by

underwater concreting method.

- Excavation of foundation hole, beating the top of concrete piles, concrete

pouring and flattening, installing formwork, foundation reinforcement, concreting,

backfilled to the top.

- Installation of scaffolding and formwork, reinforcement for abutment body,

body wall, side wall ... Concrete pouring and handling, dismantling scaffolding and

formwork.

- Construction of the quarter-cone, completion of the bridge abutment.

Terrestrial pier

For piers which have foundation structure above bored piles:

- Level the ground and define the heart of the piers and piles position.

- Installation of equipment for construction of bored pile.

- Drill to create holes, stabilize the hole walls with clay and mortar casing, wash

boreholes, installation and lower steel ring with cranes, pile concreting by underwater

concreting method.

- Installation of scaffolding and formwork, reinforcement for abutment body,

body wall, side wall ... Concrete pouring and handling, dismantling scaffolding and

formwork.

- Installation of scaffolding and formwork, reinforcing steel for the pier body

and beam.

- Leveled to the natural ground level and completion the pier.

For piers which have foundation structure above concrete piles


- Installation equipment and piling to design elevation.




- Installation of scaffolding and formwork, reinforcement for the pier body and

beam.

- Pour the concrete and removing scaffolding, formwork.


57

For piers which have foundation structure above natural foundation





- Installation of scaffolding and formwork, reinforcement for the pier body and

beam.

- Pour the concrete and removing scaffolding, formwork.


Underwater piers

For the piers above bored piles.

- Determine the heart and piles location.

- Locating piles or construction floor systems.

- Installation of construction equipment for bored pile on the floor systems.

- Drilling holes for piles create, stabilize walls and stucco wall drill pipe dredge,

clean borehole, installation and crane steel frame, concrete pouring pile method

underwater concreting.

- Close encirclement steel sheet piles, excavation within encirclement steel pile,

poured concrete floor sealing, water pump pit, processing pile, poured concrete

installations are flat shuttering, reinforcement for foundations, pouring concrete.

- Installation of scaffolding and formwork, reinforcing steel cylinder

installation, concreting, removing scaffolding and formwork.

- Clearance of the river bed, complete the piers.

For the piers above concrete piles:

- Determine the heart and piles location.

- Locating piles or construction floor systems.

- Installation of construction equipment for bored pile on the floor systems,

piling to designed level.

- Close encirclement steel piles, excavation within encirclement steel pile,

poured concrete floor sealing, pump water out, pile handling, pouring concrete for

leveling, installing formwork - reinforcing steel for the foundations, pouring concrete.

- Installation of scaffolding and formwork, installation the steel reinforcing of

pier, concreting, removing scaffolding and formwork.

- Clearance of the river bed, complete the piers.

Superstructure’s construction

58

Structural beams used are mainly prestressed reinforced concrete beams, girder

1 uses prestressed reinforced concrete beams, construction process as follows:

- Preparing girder virtuing fields, collecting equipments and materials.

- Construction of pedestals and formworks.

- Installation of prestressed reinforced cable and formworks and reinforced for

girders.

- Pouring and maintenance concrete.

- Moving girders to construction site.

- Using crane to force girders into the right position or bridge girder launchers.

- Constructing deck beams and concrete hand - rail.

- Constructing waterproof surface, paving asphalt concrete and finishing

constructing bridge.

Construction of the safety work and finishing

- Construction of grass slope

- Installation of signage system;

- Construction of painted lines of the navigation system, speed humps,...

With the length of about 15.47 km, along the route planned to be used for the

construction as the following:

Table 1.11. Constrution positions at bypasssing routes in Bảo Lộc city

No. Construction position Working routes Length Note(s)

1 From Km114+100 of National

highway 20 to the route

No construction 1.5 Km0+000

2 From Km2+800 of bypassing

route (02 positions)

Along Tô Hiến

Thành route

1.22 km Km2+800

3 From Km6+000 bypassing route

(02 positions)

Along Lam Sơn,

Hoài Thanh route

2.16 km Km6+000

4

From national highway 55 to the

route (02 positions)

Along national

highway 55 to

bypassing route

intersection

5.90km Km9+600

5 From Km128+800 to the route No construction 4.72 Km15+470

6

Dầu Giây overhead bridge

construction

No construction 360m Km0,

National

highway 20

7 Renovation and extension of

National highway 20

No construction 1.88 Km0 –

Km1+880

8 Renovation and fixing Gia Đức

and La Nga bridges.

No construction - -

59

The total number of construction position is 8, the total length of working

routes is L=9.28km.

1.4.3.3. The position of the workers' camp

Because of varied terrain characteristics, the construction site spreads both

residential area and non residential area. Therefore, to ensure that the construction

periods work well, the project is planned to allocate 5 camps as following:

+ Dau Giay overhead bridge: Workers' camps are located in the open area from

Km0 to Km1 on the right of National Highway 20.

+ Bypassing route of Bao Loc city: Workers' camps are located in 4 different

positions as follows:

- Loc Chau commune (Km3+400)

- B’Lao ward (Km4+100)

- Loc Son ward (Km 9+200)

60

- The end of the bypass route in Loc Nga commune (Km 15+100)

Contractors will rent or borrow from people or public land and the temporarily

occupied land in the project area. In addition, more local workers will be hired to

reduce the number of workers in the camps and in order to ensure local security as

well as sanitariness. After finishing construction, the camp will be removed from

construction site, restore the land to original users.

1.4.4. List of machinery, equipment

List of machinery and equipment is expected to be used as follows:

Table 1.12. Expected typical machines and construction equipments

No. Equipments Quantity

1 Rod vibrator 1.5KW 2

2 Drilling machine ED, KH, Soilmec 1

3 Bored pile drilling rig 4,5KW 2

4 Air compressor Diesel 240m3/h 2

5 Crane truck10T 2

6 Brazing machine 23KW 4

7 Jack set 250T 2

8 Water pump 20KW 2

9 Air compressor diesel 600m3/h 1

61

10 Jack set 500T 2

11 Tackle 3T 4

12 Crawler crane 25T 2

13 Electric winder 5T 4

14 Drill TRC-15 1

15 Cable cutting machines 10kW 3

16 Cable through machine 15KW 3

17 Table vibrator 2

18 Rod vibrator 2,8KW 3

19 Wharf crane 2

20 Barbende 5KW 3

21 Pneumatic hammer drill 2

22 Air compressor Diesel 360m3/h 1

23 Concrete batch plant 80m3/h 2

24 Mortar mixer machine 80L 4

25 Mortar pump machine 9m3 2

26 Wheel-mounted crane 16T 2

27 Concrete pump truck 50m3/h 4

28 Truck 10T 50

29 Sprinkler vehicles 5m3 2

30 Hot asphalt mixer plant 100 tons/h 2

31 Bull dozer 7

32 Crawler excavator 1.6m3 3

33 Rubber-tire excavator 3

34 Rubber-tire roller 5

35 Motor grader 3

36 Gider casting bed 5

37 Asphalt spreader 3

1.4.5. Raw materials and waste dumps

According to the information of the supply sources of raw materials for the

previous periods in Dong Nai and Lam Dong provinces, two additional construction

periods continue to buy raw materials from these sources as following:

1.4.5.1. Embankment soil

No. Soil source Positions

1 Soil source 1 Soil source 1 is at Km 186+520 on the right of the route about

3.7 km, The source is used in private which stores about

200,000m3 soil. Movement length from the head of the route at

Km 159+500 is about 30.5km (National highway 20). The soil

source is located in Nịnh Gia commune, Đức Trọng district, Lâm

Đồng province.

2 Soil source 2 Tây Kim clay source is located in Tây Kim, Gia Kiệm

commune, Thống Nhất district, Đồng Nai province, and belongs

62

to Thịnh Tân Co., Ltd. The size of this area is about 2.6 ha, the

utilising depth is from 3 to 7m. The source’s volume is from

70,000 to 150,000 m3. Movement length is 9Km .

3 Soil source 3 Soil source 3 is located in Gia Tân 1, Thống Nhất district, Đồng

Nai province. This source belongs to mineral exploitage plan. At

the present several companies is applying for expoiting in the

form of lowering height. The source's size is 85ha, the depth

exploited is from 10 to 20m; the volume is estimated about from

8 to 15 million m3). Transporting material by road,

transportation distance is about 2.5km.

4 Soil source 4 Đông Kim clay source is located in Đông Kim, Gia Kiệm

commune, Thống Nhất district, Đồng Nai province, and belongs

to Thịnh Tân Co., Ltd. The source’s size is 2.9ha, the exploiting

depth is from 3 to 7m. The source’s volume is about from

80,000 – 200,000 m3. Material transportation by road,

transportation distance is about 7km from concrete road with the

width from 4 to 5m to Km11+000 of National highway 20.

1.4.5.2. Construction sand

No. Sand source Positions

1 Sand source 1 Lâm Hà sand souce is located in Đình Trấn town, Lâm Hà

commune, Lâm Đồng province, and is exploited and collected from

different sources by Mười Lê Co.,Ltd. Sand is exploited from Cát

spring, with the amount of 2,000m3 per month. Material

transportation by road, transportaion distance is about 12km from

the source to National Highway 20, then along National highwat 27

to Km201+300.

2 Sand source 2 Phú Châu Co. sand source is located in village 2, Đại Lào

commnue, Bảo Lộc city, Lâm Đồng province, and belongs to HTM

Co. and Phú Châu Co.. Sand is exploited over 3ha and can be

extented if nesscessary, with the amount of 200.000m3. Material

transportation by road, transportation distance is about 2,5km along

3-to-4m-width road to Km112+000.

3 Sand source 3 Along Đồng Nai river, near Biên Hòa city; this sand source

supplies a huge amount for construction site in Hồ Chí Minh city,

Đồng Nai province and the neighborhoods. Exploitation conditions:

Đồng Nai enterprise exploits and gathers at Hữu Ngạn side of Đồng

Nai river (near Đồng Nai birdge – National highway 1). The

exploitation amount is from 300,000 to 500,000 m3 per year.

Material transportation by road with the distance of 49km along

National highway 1A to the head of the route (Km0+000).

4 Sand soure 4 Ben Nom sand source is located in Phu Cuong commune, Thong

Nhat District, Dong Nai Province, and belongs to Dong Tan Bien

63

Hoa company. The sand is exploited in Tri An river-bed with the

volume of 15,000 m3 per month. Material transport by road with

the distance of approximately 3.5km along the 6-to-7-width asphalt

concrete road to Km18 + 800.

5 Sand source 5 La Nga Sand source is located in 5 villiage, La Nga Commune,

Dinh Quan district, Dong Nai province, and belongs to Dong Tan

company. The sand is exploited in Tri An river-bed with the

volume of 10,000 m3 per month. Material transportation by road

with the distance about 3,7km along the 6-to-7m-width asphalt-

concrete road to Km33 + 000.

1.4.5.3. Construction stone

No. Quarry Positions

1 Quarry 1 Basalt quarry (Loc Chau II), at Km 106 + 630 (National highway

20) to the left, from center line of the road about 100 meters in

Dai Lao commune, Bao Loc City, Lam Dong Province. The

quary are supplying hugh amount of stone with high quality

(with license and laboratory criteria). The average transportation

distance to the section Km108 - Km154 is about 30km (along

National highway 20).

2 Quarry 2 Soklu 5 2 quarry is located in Nguyen Hue 2 town, Quang Trung

commune, Thong Nhat District, Dong Nai Province, and belongs

to Bien Hoa material manufacturing Co., Ltd. Exploitation size

is about 25ha with high quality, with the volume of about 20,000

m3 per month. This quarry is currently supplying to construction

projects in and outside the province. Material transportation by

road with the distance of approximately 2km along the 5-to-

6m-width stone road to provincal road 762, then transporting

about 1km to Km7 + 100 of National Highway 20.

3 Quarry 3 Soklu 6 quarry is located in Nguyen Hue 2 town, Quang Trung


to JSC No.5 Company. Exploitation size is approximately 12ha

with hugh amount and high quality, with the volume of 10,000

m3 per month. This quarry is currently supplying for service


road with the distance of approximately 2km along the 5-to-6m-

width stone road to 762 Asphalt road, about 1km to Km7 + 100

of National Highway 20.

4 Quarry 4 Soklu 6 quarry is located in Nguyen Hue 2 town, Quang Trung


to Bien Hoa Company. Exploitation size is approximately 15ha

with hugh amount and high quality, with the volume of 20,000

m3 per month. This quarry is currently supplying for service


64

road with the distance of approximately 2km along the 5-to-6m-

width stone road to 762 Asphalt road, about 1km to Km7 + 100

of National Highway 20.

1.4.5.4. Other materials

Other materials such as: iron and steel, cement, asphalt and hot asphalt ...

Supply sources include:

- Steel, cement, asphalt

+ Buy in Bien Hoa City, Dong Nai Province, transportation distance is about

40km.

+ Buy in Bao Loc city, Lam Dong, transportation distance is about 10 - 20km.

- Hot asphalt:

Hot asphalt will be bought from local suppliers by contractors and shipped to

the construction, as follows:

+ The supplier in Dong Nai:

Le Phan - Hoa An - Le Phan Construction Co. Concrete Factory; Group 17, Tan

Hoa town, Hoa An commune, Bien Hoa city;

Xuan Loc Hot asphalt plant - Le Hoan Private Enterprise;

Binh Thai hot asphalt Enterprise - Traffic Engineering Company of Public

Works; Ha Noi Highway 360, Phuoc Long A Ward, District 9, Ho Chi Minh

city.

+ The supplier in Bao Loc:

Asphalt batching of JSC Ngoc Lam in Dai Lao commune, Bao Loc City, Lam

Dong Province;

Stone processing station and asphalt plant in the village 5, Bao Loc City, Lam

Dong province;

- Concrete: The project sets 02 concrete batching plants on site with a capacity

of 80m3 per hour of Dau Giay overhead bridge project and Minh Rong II across Bao

Loc bypassing route to serve the construction of abutments, piers and girders

fabricated.

1.4.5.5. Power and water supply

- Power supply: On the basis of the power system wich is available in Thong

Nhat District, Dong Nai Province and Bao Loc city, Lam Dong province, the

construction contractor would purchase power from the local management unit.

- Water supply:

65

+ Water for production and daily life is from the available resources in the

project area, such as: water sources from the water system in Thong Nhat District,

Dong Nai Province, and Bao Loc City or well water is available from the local houses.

+ Water used for washing the tires, washing cars and spraying to reduce dust

humidifiers near the construction site and the construction project will be taken from

surface water (rivers and lakes) near the project area.

+ Water for concrete batching plants: Water sources will be used from the

available water resources in the project area (Minh Rong II bridge on the route of Bao

Loc City bypassing route) or the groundwater (Dau Giay intersection overhead

bridge). If the groundwater exploitation takes place, depending on the volume of

exploitation, the Contractor shall comply fully with the provisions of the Law of using

underground water.

1.4.5.6. Material field

In the phase of construction, materials will be gathered as the following locations:

- Dau Giay intersection overhead bridge:

+ Gathering in the vacant land at Km0 of National highway 20;

+ Gathering in the vacant land at the entrance of Gia Duc bridge, at Km1 + 880 of

National highway 20.

- The construction of bypassing route in Bao Loc city:

+ Material field at Km0+800;




+ Material field at Km14+600.

1.4.5.7. Landfill

Waste land and solid waste will be transported to the landfill with the approval

by the local authorities, as follows:

- Dau Giay intersection overhead bridge:

Waste land and solid waste will be transported to the landfill in Village 14, Tran

Hung Dao Town, Xuan Thanh Commune, Thong Nhat District, Dong Nai Province.

The allowed size for a landfill is 2ha, disposal expected height is 8m.

- Bypassing route in Bao Loc city:

66

• Position No. 1: Km6 + 00 (from Km0 to Km113 + 727 of National highway

20) Loc Son ward is planned as vegetable plantations, allowing disposal area is 57,6ha

with average disposal height is 5m.

• Position No. 2: Km10 + 00 (from Km0 to Km113 + 727 of National highway

20) in Loc Son ward and Loc Nga ward is planned for vegetable plantations with low

density, allowing disposal area is 16ha with average disposal height is 4.5m.

1.4.6. Project implementation schedule

Constructing simultaneously, including: Execution wall, overhead bridge,

linked path with the head of the bridge, liked path with Dau Giay bridge; roadbed

construction, construction of horizontal drainage system, vertical drainage system,

intersections and road surface construction of Bao Loc bypassing route. Project

construction period is planned to last 18 months, as follows:

Table 1.13. General construction schedule

Period

Category

2015 2016 2017

1st

Qrtly 2nd

Qtrly 3rd

Qrtly 4th

Qrtly 1st

Qrtly 2nd

Qrtly 3rd

Qrtly 4th

Qrtly 1st

Qrtly 2nd

Qrtly 3rd

Qrtly

Feasibility

studies and

preliminary

designs

Elaboration

and approval

of

construction

drawings

Land

clearance

Construction

At the present, the details of project implementation schedule are not mentioned

because the project is in the feasibility study stage. So detailed implementation

schedule of construction will be updated, in particular in the next phase - the technical

design phase.

1.4.7. Investment

Through the review process, the total amount of money after finishing

construction will balance 1,115,084 millions. With design options as suggested by the

design consultants, the total expenditure incurred by the two additional categories (i)

Dau Giay overhead bridge and (ii) Bao Loc City bypassing route of Highway 20 as

follow:

67

Bảng 1.14. Tổng mức đầu tư của Dự án (triệu đồng)

No. Category

Dầu Giây

overhead

bridge

Bảo Lộc city

bypassing

route

Fixing Gia

Đức and

La Ngà

bridge

Total

1 Construction 205,158 518,091 9,008 732,256

2 Compensation, land

clearance 5,855 59,982 - 65,837

3

Project management,

construction investment

consultants,

environmental

management and others.

20,516 51,809 901 73,226

4 Redundancy costs (15%) 42,857 112,647 1,772 157,277

5 Total 274,385 742,529 11,681 1,028,595

1.4.8. Management and execution of projects

- The parties involved in the project implementation process include:

- State agency in charge: Ministry of Transport (MOT);

- Representative offices of State: Project Management Unit 7 (PMU 7);

- Investors: JSC BT20 - Cuu Long (BT20);

- Project Consultancy: Truong Son Consultantcy.

- EIA's consultancy: Institute of Transport Science and Technology;

- The organization of the management and implementation of the project is

divided into phase, as follows:

1.4.8.1. Preparation phase:

PMU 7 collaborates with JSC BT20 to draw up files for additional categories of

the project of renovating National highwat 20 from Km0 + 000 to Km123 + 105.17 on

the territory of Dong Nai and Lam Dong province after consulting by Truong Son

company and approval of the Ministry of Transport, as well as the approval of the

investment party which is World Bank.

Along with the project's environmental impact assessment report has added two

new categories will be developed and submitted to the Ministry of Natural Resources

and Environment for approval after consulting by the Centre for Science, Technology

and Environment Protection of Transport.

After the project is approved, the PMU 7 and BT20 will collaborate with the

Center for Land Development of Thong Nhat District, Dong Nai Province and Bao

Loc city to plan for land clearance and relocation. After being approved by the

provincial Committee of Lam Dong, Dong Nai and party funding (WB), BT20 and

PMU 7 will fund for the Land Development Center to implemente compensation and

support for non-volunteer who have to relocate.

68

Figure 1.7. Diagram of the project implementation in the preparation phase

1.4.8.2. The implementation phase of the project

After obtaining the investment decision, PMU 7 and BT20 will conduct detailed

work with design consultants to submit to the Ministry of Transport for approval.

Regarding environmental aspects, PMU 7 and BT20 will establish environmental

management plan after consulting by the Institute of Science and Technology of

Transport. Contents of the Environmental Management Plan includes detailed

mitigation measures and the design of environmental remediation which have been

mentioned in the EIA report after being approved by the Ministry of Natural

Resources and Environment. At the same time they will establish technical guidelines

for environment as the basis for the construction units.

During the construction phase the Contractor will perform environmental

protection measures under the EMP. BT20 and PMU7 have responsibility for the

inspection and supervision of the implementation of environmental protection

measures.BT20 and PMU 7 will monitor compliance with management measures,

environmental protection of the Contractor, and will hire project monitoring consultant

to check implementing measures and environmental safety regularly. Independent

Environmental Consultant (IEC) will perform monitoring, environmental monitoring

during construction phase. The monitoring reports, environmental monitoring during

construction phase will be established by IEC to submit to PMU7. Then BT20 will

submit to oNRE in Dong Nai, Lam Dong; Ministry of Transport and the World Bank.

Đồng Nai and Lâm Đồng

Committee PMU7 and BT20

Trường Sơn

consultancy

-Feasibile

study;

- Design

Environmental

consultancy

(CEPT)

- EIA report

- EMP

MOT and MONRE

World bank

The Center

for Land

Development-

- Land

clearance and

Relocation

Plan

69

Figure 1.8. Diagram of construction phase

1.4.8.3. Post-construction phase

Once completed, the project will be handed over to the Ministry of Transport

under previous contracts by PMU7 and BT20.

The main information about construction category, predicted progress, and how

to treat environmental problems are summarized in the following table:

DoNRE of Đồng Nai and

Lâm Đồng

PMU7 and BT20

Contractors (construction phase)

- Construction;

- Inspecting;

- Training and applying mitigation

measurements;

- Environmental protection activities.

Environmetal

Consultancy (IEC)

- Inspecting;

-Monitoring report,

environmental inspecting

ĐỒNG NAI and LÂM

ĐỒNG COMMITTEE

MOT

Project Consultancy

- Technical inspecting;

- Safety inspecting

WB’s environmental

profession

70

Table 1.15. Project’s Major information

PHASE ACTIVITIES PEDICTED TIME TECHNOLOGY ENVIROMENTAL FACTORS

PREPARATION House Removement 30 days Manual and Technical - Noise;

- Dust.

Tree clearance 30 days Manual felling and

transporting by motor vehicle

- Noise;

- Dust.

- Solid waste.

Land preparation 30 days Using of motorized

construction equipment

- Noise;

- Dust.

- Solid waste.

CONSTRUCTION

Dau Giay overhead bridge intersection

Construction of the

overhead bridge and

path

18 months - Construction of foundation

abutments and piers with

pile;

- The cylindrical structure,

abutment and cement

concrete bridge beams are

casted in site or precasted;

-Bridge’s surface is alphalt

cement.

- Noise;

- Dust.

- Solid waste.

- Waste water

- Hazardous waste and hazardous

materials;

- Spilled rain.

Sub route construction 10 months Breaking into positions and

continuous implementation:

- Soil K95 constrution;


- Macadam construction;

- Asphalt concrete surface

construction.

- Noise;

- Dust.

- Solid waste.

- Spilled rain.

Surface Renovation of

National highway 1 và

769 road.

8 months

Extention and

Renovation of National

highway 20 from Km0

to Km1+885

8 – 10 months

Drainage systeam 3 months Continuous construction - Noise;

71

construction - Dust.

- Solid waste.

Workers’ camps 18 months - - Waste water;

- Solid waste .

Environment

refundment

1 month - - Noise and dust;

- Solid waste

Bao Loc city bypassing route

Road’s surface

construction

18 months Breaking into positions and

continuous implementation:



- Macadam construction;

- Asphalt concrete surface

construction.

- Noise;

- Dust.

- Solid waste.

- Waste water


materials;

- Spilled rain.

Bridge construction 10 months - Construction of foundation

abutments and piers with

pile;

- The cylindrical structure,

abutment and cement

concrete bridge beams are

casted in site or precasted;

-Bridge’s surface is alphalt

cement.

- Noise;

- Dust.

- Solid waste.

- Spilled rain

- Waste water


materials;

Intersection

construction

2 months Continuous construction - Noise;

- Dust.

- Solid waste.

Drainage system

construction

3 months Continuous construction - Noise;

- Dust.

- Solid waste.

72

Workers’ camps 18 month - - Waste water

- Solid waste.

Environment

refundment

1 month - - Noise;

- Dust.

- Solid waste

OPERATION Traffic operation - - - Noise;

- Dust.

- Spilled rain

73

CHAPTER 2. NATURAL ENVIRONMENT AND ECONOMY – SOCIAL

CONDITIONS IN THE PROJECT AREA

2.1. Natural environmental conditions

2.1.1. Conditions of geography, geology

2.1.1.1. Typical topography, geomorphology

- The topography of the researched area in the junction of Dau Giay overhead

bridge: belongs to the Midlands terrain from the plateau of South Central to the

Southern Delta. In general, the terrain is relatively flat, with 82% of slopes < 8o, 10%

of slopes < 15o and 8% of slopes > 15o. The soil that covers the surface includes clay,

gray brown and red brown clay with Neogen age varying from 20m to -50m.

- The topography of the researched area for the shunting route of Bao Loc city:

From Km +00 (Km114+100 – National highway 20) to Km 15+33.17 (Km128+800 –

National highway 20), with complex terrain, the route crosses the old road, through

peaks and deep gorges, large vertical slope, along the two routes are mainly tea and

coffee trees. The researched area belongs to the Di Linh Plateau and there are three

types of terrain: high mountains, steep hills and valleys.

+ High mountains: The distribution is concentrated in the southwest area of Bao

Loc city, including the high mountains (from 900 to 1,100 m above the sea level) with

high slope (grade IV to VI). The area is approximately 2,500 hectares, accounting for

11% of the total area of the Bao Loc city.

+ Steep hills: Including the weathered basalt blocks which were dissected to

make up the steep hills with relative common peaks from 800 to 850 m. The large

hillside slope degree (from grade II to grade IV), easy for erosion, this topography type

accounts for 79.8% of the total area of the city and it also is area cultivate perennial

crops such as tea, coffee, strawberry.

+ Valleys: The distribution is concentrated in Loc Chau and Dai Lao

communes, accounting for 9.2% of the total area of the city. The land is relatively flat,

and many areas were flooded after heavy rains. So it is suitable for coffee and tea

development, but may be for mulberry trees and short – day trees.

2.1.1.2. Geological Features

Based on field survey data and refer to the geological maps of Vietnam: Gia

Ray – Ba Ria, B'Lao, Da Lat - Cam Ranh rated of 1 / 200,000 shows that the highways

20 mainly go through the following geological formations.

- La Nga Jurassic: The lithological composition of the rocks are mostly gray

fine-grained sandstone with white mica sandwiched with dark gray siltstone set and

black clay with large crystal thin-bedded pyrite. The thickness of this formation is

predicted to approximately 600-800 m

74

- Dinh Quan complex Jurassic: including the formation diorite, quartz diorite,

medium grain to grain gabrodiroit small, gray-green to gray, or with a grannodiroit,

biotite granite gray mottled black granules, massive structure, half self-image

architecture

- Bao Loc formation late Jurassic age: includes forming mainly of anderit

sandwiching anderit porphyrit that have little thin tuffaceous sandstone colored gray or

sometimes felt Dacite continent, and rhyodacite tuff of them are gray, light gray. Rock

solid has tight structure. The thickness is about 400-500 m.

- Ca Na Complex: The intrusive rocks of Ca Na complex which are widely

distributed in the region of Lam Dong - Nha Trang; typical block of Da M'Bri and

some other blocks in the Bao Loc. Lithological composition is intrusive rocks biotite

granite, granite light, alaskit massive structure is homogeneous, self-half architectural

form, particle size from large to medium. In the project area, the granite intrusive

complexes is found in Da M'Bri river (in the left section).

- Dai Nga formations late Neogene age: lithological composition are mainly

olivine basalts, which are composed Plagiobazan alternating narrow pore

characteristics. The thickness varies from 50-250 m

- Tuc Trung formations late Pliocene and Early Pleistocene: lithological

composition are mainly olivine basalt with gray-green characteristic narrow structure

- Xuan Loc formation middle Pleistocene age: components are mainly olivine

basalt, olivine basalt gray-green alkaline tight structure characteristics

- Fourth generation (QIV 1-2): The alluvial sediments (aQ) deluvial (dQ),

proluvi (pQ) distribution of narrow strips create thin layers (clay, sand) and the

sandbars, pebble thin gravel along, along the river and major streams in the region;

component is sand, pebbles, gravel, loam mixed with, boulder of granite, thickness

varies from 5-7 m

2.1.2. The weather Conditions

2.1.2.1. Proposed area for the expansion of Dau Giay overpass intersection

The surveyed route is in the tropical monsoon climate zone, and has two

seasons: rainy season lasts from May to October, and the dry season starts from

November to April the following year.

a. Temperature

The average air temperature per year: 27.50C

The absolute high air temperature at: 37.6C

The absolute low air temperature at: 15.6C

Table 2.1. Air temperature in months according to Bien Hoa weather station

75

Months I II III IV V VI VII VIII IX X XI XII Year

Average 26.2 27.2 28.3 29.2 28.6 28.2 27.5 27.4 27.2 27.1 26.9 26.6 27.5

Max 34.8 36.2 36.8 37..3 36.2 35.6 34.7 35.0 34.7 34.5 34.3 34.4 37.6

Min 15.9 19.8 22.2 23.9 23.6 23.6 23.1 22.9 23.1 22.2 20.4 19.2 15.6

(Period: 2009 – 2013)

b. Rain

Total multi-year average rainfall is of 2093.1 mm, the August is the month with

the highest annual average rainfall of up to 312.9 mm, January and February have

lowest amount of rain. Total rainfall during the rainy season reaches 90% - 95% of the

total annual rainfall.

Table 2.2. Monthly rainfall according to Bien Hoa weather station

Month I II III IV V VI VII VIII IX X XI XII Year

Total 7.7 6.7 44.7 115.2 261.5 216.4 327.5 312.9 374.0 304.6 98.5 23.4 2093.1

Max 4.0 4.8 26.2 34.7 52.4 54.7 71.8 58.1 71.0 74.7 35.5 17.4 105.1

(Period: 2009 – 2013)

c. Humidity

The average relative humidity is 80%. Periods of high humidity lasts from May

to October. Dry period lasts about 5 months, from November to April the following

year, with an average humidity of 76-78%.

Table 2.3. Monthly humidity according to Bien Hoa weather station


Average 75 74 76 75 80 82 84 84 85 84 81 77 80

Min 41 39 33 40 46 51 53 51 52 47 49 42 31

(Period: 2009 – 2013)

d. Wind and wind speed

The average wind speed is 1.6 m/s, the highest wind speed is V = 3.2 m/s in

December.

Table 2.4. Monthly wind speed according to Bien Hoa weather station


Velocity 1.6 1.4 1.6 1.6 1.4 1.4 1.4 1.6 1.4 1.4 1.4 3.2 1.6

Direction SE S-SE S-SE NE SE SW SW - NW SW SW SW N-NE SE -

(Period: 2009 – 2013)

The major wind directions by year are South East and South West while in

April, the wind direction is often North East.

e. Hours of sunshine

76

The average hours of sunshine is 1,934.9 hours/year (5.3 hours/day), in which

in rainy season (from May to November), this data is from 4 to 5 hours per day and

from 5 to 7 hours per day in dry season (from December to April the following year).

Table 2.5. Monthly average hours of sunshine according to Bien Hoa weather

station.


Total 137,7 183,8 207,1 187,7 168,3 161,8 146,7 142,9 131,0 139,0 157,2 171,6 1934,9

(Period: 2009 – 2013)

f. Others

- Storm: Because of having Southeast climates, the affection of storm to the

project area is insignificant. The major period of storm affection is from

October to December. According to the data, there was only 16 storms from

1961 to 2008 and storm levels ranged from 6 to 8. However, in the recent years,

the frequency of storm affection increased, therefore it can affect to the project

area.

- Thunderstorms, Tonados: According to the weather data, Southeast area has

most of thunderstorm days all over the country, from 90 to over 100 days per

year. This type of unusual weather will dangers the project area of Dau Giay

overhead bridge.

- Hail: Hail, mostly small hail, usually happens in the transition period between

dry season and rainy season according to the weather data.

2.1.2.2. The proposed area for the Bao Loc city bypass.

Located in a tropical monsoon climate, but due to the height of 800 m above sea

level and the effects of topography, the climate of Bao Loc has many unique features

as follows:

a. Temperature

The average air temperature per year: 22.30C

The average high air temperature at: 23.9C in May

The average low air temperature at: 20.3C in January

Table 2.6. Air temperature in months according to Bao Loc weather station


Average 20,3 21,4 22,5 23,5 23,9 23,5 22,7 22,7 22,3 22,4 21,6 20,6 22,3

(Period: 2009 – 2013)

b. Rain

77

The rainy season is from April to November. Total multi-year average rainfall

is of 2,728.2 mm, the average number of rainy days are 190 days per year. Most of

rain is from July to September.

Table 2.7. Monthly rainfall according to Bao Loc weather station


Average 27 44 158,8 216,2 263,8 216,6 382,2 353,6 452,4 363,4 174,6 75,6 2728,2

(Period: 2009 – 2013)

c. Humidity

The average humidity is 84.9% which is quite high. Periods of highest humidity

lasts from July to October and that of lowest humidity lasts from January to April.

Table 2.8. Monthly humidity according to Bao Loc weather station

Tháng I II III IV V VI VII VIII IX X XI XII Năm

Trung bình 78.8 76.8 79.4 81.8 87 88.4 89.4 89.6 91.4 88.8 85 83.2 84.9

(Period: 2009 – 2013)

d. Wind and wind speed:

The average wind speed is 2.2 m/s, the highest wind speed is V = 3.0 m/s in

November and December.

Table 2.9. Monthly wind speed according to Bao Loc weather station


V 2,8 2,2 1,6 1,2 1,8 1,8 2,4 2,4 1,6 2,2 3,0 3,0 2,2

Direction NE N-NE NE NW S-SW W-SW SW SW SW NE NNE NNE -

(Period: 2009 – 2013)

The major wind directions by year are North East from January to April, South

West from June to September.

e. Hours of sunshine

The average hours of sunshine is 1,689 hours/year (4.6 hours/day), in which in

rainy season, this data is from 2 to 3 hours per day. There are much sunshine in dry

season but low average temperature, which is the unique feature of Bao Loc weather.

Table 2.10. Monthly average hours of sunshine according to Bao Loc weather

station.


Average 203,2 216,4 208,8 197,4 175,6 169,2 134,2 151,4 97,4 135,2 137,4 168,8 1995

(Period: 2009 – 2013)

78

f. Others

- Fog: Because of low temperature at night and in the early morning, water vapor

in the air could easily reaches saturation state therefore fog often occurs in Lam

Dong more than delta area.

The forest edge has much more fog than the central denuded hills. In the valley,

because of wet, windy and cold weather, fog exists much more than in the high,

airy area.

- Frost: In Da Lat, particular in Lam Dong province, frost usually occurs in

January and February, and sometimes in March. Frost caused huge damage

to crops.

- Thunderstorms: In the first two months of the rainy season (April and May),

thunderstorm mainly occurs in the afternoon.

- Hail is a special form of ice rain. Hail appears in the hot period of the year.

In Dalat hail often appears in April, May and June, especially the first two

months of the rainy season.

The size of the hailstones depends on the conditions of its formation.

Usually hailstones' size is as equal as pea.

Hail rarely happens, but hail can damage agricultural production, mainly

mechanical break plants, especially small trees, vegetables. The hail area

depends much on terrain conditions. The possibility of hail in the

mountainside and airy grassland is much more than that in the valley.

2.1.3. Hydrological characteristics

2.1.3.1. Surface water

- Dau Giay overhead bridge intersection:

Dau Giay intersection has simple hydrological regime. If following to the

direction of National Highway 20 from Km0 + 68.39, there will be 01 sewer with 0.75

x 0.75 aperture connected with the Ø100 drain, flow direction is from right to left.

Currently floodgate is stuck. When there are floods, surface water in the right rubber

plot line runs through this drain and flushes the gardens, then swepts through from

National highway 20 to National highway 1, then runs inside the underground sewer

along National highway 1 to the drain at Km1832 +600 at National highway 1.

At National highway 1, towards Hanoi - Ho Chi Minh city direction, at

Km1832 + 600, there is a Ø100 sewer which has water flowing from right to left.

There are long drains for the basin.

- Bypassing Sections in Bao Loc city:

79

Most sections of the road are cross near the summit watershed of the bowl hills,

and transform the terrain from one hill to another. The routes are higher and far from

large rivers therefore they are not be affected much from flooded. The routes have

clear basin hydrological regime, and belong to simple regime, mostly small drainage

from upstream to river systems in areas such as:

+ DaR'Nga River system: Located in the eastern city of Bao Loc. It is the

boundary between the city and Bao Lam district, the sub-systems of the river in Bao

Loc city DaR'Nga include: DaSre Drong spring, DaM'Drong spring, DaBrian spring.

That springs can serve agricultural production.

+ Dai Binh river system: Located mainly in the South at Highway 20, from the

high mountains in the south and west of Bao Loc. The sub-systems include DaLab

spring, Tan Ho spring, Dai Binh spring, which have much water and can be used as a

stable source for irrigation in Dai Binh valley.

The project planned to construct 01 Bridge: Minh Rong II Bridge at Km11 +

165.59 across Da Brim spring of Dai Binh river. Toward the upstream at National

highway 20, Minh Rong bridge has 1x33m scheme. The survey of water level at Minh

Rong II bridge as follows:

Table 2.11. Water level of Minh Rồng II bridge across Dabrim stream

No. Position Pile Survey’s

Position

Water level (m) Note(s)

H2002 Hmax2 Hmax3 Hht

1 Km11+165.59 7 Upstream 717.74 717.00 716.89 716.35

2 Km11+165.59 7 717.74 717.00 716.89 716.35

3 Km11+165.59 7 Downstream 717.70 717.03 716.86 716.36

2.1.4. Status of physical environmental components

Scientific, Technological Center for Environmental Protection in Transportation

– Institute of transport science and technology has conducted an environmental

monitoring of air quality; noise; vibration; groundwater, as well as soil quality in the

project area.

The methods of measurement and analysis of environment used in this report

comply with the provisions of MONRE, Vietnam standards of observation methods,

analysis of environmental parameters and compare assessed on the of applying

national technical regulations.

2.1.4.1. Air environment, noise and vibration.

- Sampling locations were marked using GPS device.

- Diagram of sampling locations are shown in Figure 2.1.

80

Nghĩa trang liệt sỹ

rive

rDai

Bih

rier Tan Ho

Figure 2.1: Diagram of sampling locations

Bui Thi Xuan primary school

Nam Phuong pagoda

Nghĩa trang liệt sỹ Notes:

: Sampling locations of air, noise, vibrations

: Sampling locations of surface;

: Sampling locations of underground water;

: Sampling locations of soil.

Be Van Dan primary school

Lac Hong university

Dau Giay flyover

suối

Đại

Bìn

h

suối

DaS

re D

ron

g

suối

DaS

re D

ron

g

suối

DaB

rian

suối DaLab

suối Tân Hồ

81

Table 2.12. Sampling locations of air, noise, vibrations along the project area

Position Code Coordinates Weather

features

Area Features

X (m) Y (m)

- 100m from Day

Giay intersection to

the north;

- Measurement

location is at the head

of designated road.

AS1,

NS1,

VS1

1210174.201 433301.470 Daytime:

Sunny,

Slightly

windy

Lots of residences

along the routes.

Many vehicles.

Major affection

resource is

transportation.

- Bế Văn Đàn primary

school, Xuân Diệu

street, Lộc Châu

commune;

- Sensitive position at

the head of bypassing

route and easily

affected by

construction

activities.

AS2,

NS2,

VS2

1273431.893 502516.157 Daytime:

Sunny,

Slightly

windy

Next to Primary

school’s gate. A

few residences. A

few vehicles. Major

affection resource is

transportation.

- Residence in B’Lao

commune, near Nam

Phương pagoda;

- An Ninh residence

will be directed

affected by

construction

activities.

AS3,

NS3,

VS3

1274230.992 504706.772 Daytime:

Sunny,

Slightly

windy

Nest to residence

No. 7 – B’Lao

commune, near

Nam Phương

pagoda. Focused

residence. A few

vehicles. Major

affection resource is

transportation.

82

Position Code Coordinates Weather

features

Area Features

X (m) Y (m)

- Nasari residence,

Lộc Nga commune;

- The boundary of

Nasari residence in

Lộc Nga commune,

and will be directed

affected by

construction

activities.

AS4,

NS4,

VS4

1273974.789 511712.217 Daytime:

Sunny,

Slightly

windy

Nasari residence –

Lộc Nga commune.

Focused residence.

A few vehicles.

Major affection

resource is

transportation.

a. Air Quality:

* The parameters for evaluating air quality:

These indicators of air quality monitoring, analysis and evaluation of the

project is the basic parameters of the ambient air:

- The parameters of the ambient air: SO2, NO2, CO.

- The particulate matter: TSP

- Environmental micro-climate: temperature, humidity, wind direction,

wind speed, pressure.

* The equipments used for measuring and sampling in the survey including:

- Dustscan Scout Aerosol Monitor

- Air Sampler - CASELLA-Apex.

- Environmental micro-climate: Kestrel 4500

* Standard for reference:

The regulations of limit concentrations values of air pollutants is based on the

national technical regulations of Vietnam, air ambient quality QCVN 05: 2013 /

BTNMT.

* Measurement results and comments:

At the aboved monitoring positions, the monitoring parameters frequency of air

environment and microclimate is 2 times/hour, 24 hour monitoring period.

Measurement results of each specific location are presented in the appendix of the

report and are summarized below:

- Microclimates:

83

Table 2.13. Results of microclimate measurement along the project route

No. Code

Criteria

Temperature

(0C)

Atmospheric

pressure (mbar)

Humidity

(%)

Wind

speed (m/s)

Wind

direction

1 AS1 17.8 – 27.4 1005 - 1017 60 - 81 0.5 – 1.5 North East

2 AS2 17.4 – 27.8 1002 - 1015 61 - 77 0.5 – 2.0 North East

3 AS3 18.3 – 26.8 1005 - 1014 60 - 83 0.7 – 1.8 North East

4 AS4 17.9 – 29.4 1005 - 1016 58 - 81 0.6 – 2.1 North East

Comments: In general. this region is featuring in the tropical monsoon climate

with temperatures between 17.4- 29.4oC . humidity between 58% - 83% . wind speed

from 0.5m/s - 2.1m/s, atmospheric pressure of 1002 - 1010mbar and wind direction is

mainly Northeast.

- Air quality:

Results of measurement of ambient air quality in the project area are shown in

the following table:

Table 2.14. Results of measurement of air quality along the project route

No Sample Parameter analysis (mg/m3)

TSP CO SO2 NO2

1 AS1 92.3 2051.5 76.2 68.4

2 AS2 82.1 1880.4 75.3 69.8

3 AS3 70.7 938.5 64.4 53.7

4 AS4 69.3 788.4 52.8 38.9

QCVN 05:2013/BTNMT

(TB 24h) 200 - 125 100

Comments on air environmental quality:

- Total dust concentration (TSP) ranged from 69.3 to 92.3 µg/m3 and they are

within the limits allowed by national standard QCVN 05: 2013 / BTNMT. The highest

84

concentration of dust at the position AS1 (92.3µg/m3) because AS1 is nearby crowded

traffic roads.

- The concentration of CO ranged from 788,4 to 2051,5 µg/m3. In general. the

concentration of CO also tend to rise higher in the daytime and reduce at night

- The concentration of SO2 from 52.8 to 76.2 µg/m3. The concentration of

SO2 in the position are lower than the maximum permissible limit prescribed in

national standard QCVN 05: 2013 / BTNMT (125 µg/m3).

- The concentration of NO2 ranged from 38.9 to 69.8 µg/m3. NO2

concentrations were lower than the maximum permissible limit prescribed in national

standard QCVN 05: 2013/BTNMT (100 micrograms/m3). The highest concentrations

of NO2 at position AS2 (69.8μg/m3). This is the location next to schools, residential

areas and crowded roads.

b. Noise

* Evaluated parameters: Equivalent noise level Leq.

* Methods of measurement and analysis

Method of noise impact assessment for the Project area is the measurement of

noise on the current state of a network of pre-selected points.

Sampling techniques and noise analysis is in compliance with ISO 5965 - 1995.

Measurement time 16 hours/day, 3 times per 1 hour, 10 minutes per measurement.

Time measurement of noise in each sample locations are shown in detail in

Appendix.

* Equipments used to measure and analyze in the survey

Noise level meter RION - Model NL - 21 SOUND Level Meter Japan.

* Standard reference: National technical regulations on noise QCVN 26: 2010/

BTNMT.

* Measurement results and comments:

Measurement results of each specific location are presented in the appendix of

the report and are summarized below:

Table 2.15. Results of measurement of noise along the project route

Unit: dBA

No Samples Leq in average (6h - 21h)

01 NS1 66.8

02 NS2 65.7

03 NS3 60.6

85

No Samples Leq in average (6h - 21h)

04 NS4 58.8

QCVN 26:2010/BTNMT

(commond area)

70

Từ 6h - 21h

Reviews the current state of the noise

- In day (6h-21h): The measurements of noise ranged from 58.5 to 66.8 dBA.

They are lower than the maximum permissible limit prescribed in QCVN 26: 2010/

BTNMT. The Measurement of noise at NS1 is the highest (66.8 dBA) because it is

beside crowded road

c. Current status of vibrations in the project area

* Evaluated Parameters: Lveq.

* Methods of measurement and evaluation

Method of noise impact assessment for the Project area is the measurement of

vibration on the current state of a network of pre-selected points.

Sampling techniques and vibration analysis is in compliance with TCVN 6963-

2001. Measurement time 16 hour per day. 3 times per hour. 10 minutes per time.

Time of measurement is shown in detail in Appendix.

* Equipments used to measure and analyze in the survey

Vibration Level Meter VM - 53A

* Standard reference

QCVN 27:2010/BTNMT - National technical regulations for vibration in common

area.

Results of measurement of vibration of the related project area are presented in

the following table:

Table 2.16. Results of vibration along the project route (Unit: dB)

No Samples

Results of the acceleration vibration (Lva)

(6h - 21h)

1 VS1 48.5

2 VS2 48.1

3 VS3 43.0

4 VS4 42.5

5 QCVN 27:2010/BTNMT 75

86

No Samples

Results of the acceleration vibration (Lva)

(6h - 21h)

Common area From 6h -21h

Comments on the current state of vibration : All The measurements of vibration

are lower than the permissible limit prescribed in QCVN 27: 2010/ BTNMT.

2.1.4.2. Environmental soil, groundwater, surface water

a. Surface water

*Location: Dabrim stream (at Minh Rong bridge).

Table 2.17. Surfacewater sampling locations

No. Position Code Coordinates Weather

features

Sample

features X (m) Y (m)

1

- Minh Rồng II

construction site

across Dabrim

spring;

- Downstream,

and can be

easily affected

by construction

activities.

NM01 1273273.814 510436.817

Daytime:

Sunny,

slightly

windy

Strong

currents,

transparent

water, little

suspended

solids,

odorless

* Parameter analysis and measurement:

The parameters of surfacewater quality for evaluating include: Temperature , pH

, turbidity , conductivity , DO , COD , BOD5, TSS , NH4 + , NO3- , PO4

3-, NO2 - ¸ heavy

metals (Cu, Pb, Zn, Fe, Cd, As, Hg ), grease and Coliform .

* Analytical methods:

Table 2.18. Methods of analysis of surface water quality and groundwater

Parameters Method /analysis equipments

pH TCVN 6492:2011

Temperature SMEWW2550B:2012

turbidity TCVN 6184:2008

BOD5 TCVN 6001-1:2008

COD SMEWW5220C:2012

DO TCVN 7325:2004

87

TSS TCVN 6625:2000

NH4+ SMEWW 4500 - NH3F (2012)

NO3- TCVN 6180:1996

NO2- TCVN 6178:1996

PO43- TCVN 6202:2008

Fe TCVN 6177:1996

Cd TCVN 6193-1996

Pb TCVN 6193-1996

Hg TCVN7877:2008

Cu TCVN 6193:1996

Zn TCVN 6193:1996

As TCVN 6626:2000

E.coli TCVN 6187-1:2009

Coliform TCVN 6187-1:2009

Dầu mỡ TCVN 5070:1995

*Sampling equipments:

All of parameters such as temperature. pH. DO is measured at the scene by

instrumentation of D-54. HORIBA. Japan. Other parameters such as COD.

BOD.anions. heavy metals. microbiology ... will be sampled. stored and analyzed in

the laboratory.

* Sampling frequency:

- Frequency: 1 location /stream (upstream. downstream) x 1 sample

/location(am) .

* Standard reference: QCVN 08-MT:2015/BTNMT: National Technical Regulation

on surfacewater quality.

* Results of the analysis: (see the below table)

Table 2.19. The analysis results of groundwater quality

No Parameter Unit Test and anlysis

method Result

QCVN 08-

MT:2015/BTNMT

(Column B1)

1 Temp oC SMEWW2550B:2012 27.1 -

2 pH - TCVN 6492:2011 7.1 5.5-9

3 turbidity NTU TCVN 6184:2008 22.7 -

4 conductivity µS/cm Measuring at site/ Horiba 32.1 -

88

method

5 DO mg/L TCVN 7325:2004 4.8 ≥4

6 COD mg/L SMEWW5220C:2012 10.2 30

7 BOD5 mg/L TCVN 6001-1:2008 7.5 15

8 TSS mg/L TCVN 6625:2000 30.2 50

9 NO3- mg/L TCVN 6180:1996 1.1 10

10 NO2- mg/L TCVN 6178:1996 0.014 0.04

11 PO43-

mg/L TCVN 6202:2008 0.08 0.3

12 Cu mg/L TCVN 6193:1996 0.19 0.5

13 Pb mg/L TCVN 6193:1996 0.003 0.05

14 Fe mg/L TCVN 6177:1996 0.47 1.5

15 Zn mg/L TCVN 6193:1996 0.26 1.5

16 Cd mg/L TCVN 6193:1996 0.003 0.01

17 Hg mg/L TCVN7877:2008 KPHT 0.001

18 As mg/L TCVN 6626:2000 KPHT 0.05

19 Grease mg/L TCVN 5070:1995 KPHT 0.1

20 Coliform MPN/

100mL TCVN 6187-1:2009 3.500 7.500

*KHPT: Not found

Comments on surfacewater quality:

- The physical and chemical indicators ( temperature , turbidity , conductivity ,

pH , DO , COD , BOD5 , TSS , NH4+ , NO3- , NO2- , PO4

3-, grease )

All The measurements of physical and chemical indicators are lower than the

permissible limit prescribed in QCVN 08-MT:2015/BTNMT. column B1

- Index microbiological Coliform)

All The measurements of coliform are lower than the permissible limit

prescribed in QCVN 08-MT:2015/BTNMT. column B1

- Concentrations of heavy metals (Cu, Pb, Cd , Fe, Zn, Hg, As) : All The

meassure are lower than the permissible limit prescribed in QCVN 08-MT:2015/

BTNMT. column B1

Concluding: The measured values show that the quality of surface water area is

not polluted by organic, nutrient and heavy metals

b. Groundwater quality

* Sampling Location:

All of the sample was taken at the wells within the potentially affected by the

activities of the project which are now used by local people for bathing. washing. ...

Location sampling is marked by using GPS equipment.

Table 2.20. Groundwater sampling locations

No Sampling Location Coordinates Samples Depth Features

89

X (m) Y (m) (m)

1

House of Mr. Tran

Van Luu, Loc Chau

ward, Bao Loc city,

Lam Đong province

1273517.924 1273517.924 NN01 15

Transparent

water, few

sediment,

slightly

fishy smell

2

House of Ms. Tran Thi

Lan, B’lao ward, Bao

Loc city, Lam Đong

province

502546.450 502546.450 NN02 25

Transparent

water, few

sediment,

odorless

3

House of Mr. Nguyen

Huu Thang, Loc Son

ward, Bao Loc city,

Lam Đong province

1274230.991 1274230.991 NN03 20

Transparent

water, few

sediment,

odorless

4

House of Ms. Đinh

Thu Ha, Loc Nga

commune, Bao Loc

city, Lam Đong

province

504706.772 504706.772 NN04 20

Transparent

water, few

sediment,

odorless

5

House of Mr. Tran

Anh Tuan, Bau Ham 2

commune, Thong

Nhat district, Dong

Nai province

1272483.710 1272483.710 NN05 15

Transparent

water, few

sediment,

fishy smell

* Parameter analysis and measurement:

The parameters of underground water quality for evaluating include:

temperature, pH, turbidity, hardness, total solids, NH4+, NO3-, NO2-¸ PO43-, Cl-, SO2 ,

heavy metals (Cu, Pb, Zn, Fe, Cd, As, Hg), E.coli, coliforms.

* Sampling equipments:

All of parameters such as temperature, pH is measured at the scene by

instrumentation of D-54, HORIBA, Japan, Other parameters such as COD, hardness,

anions, heavy metals, microbiology... will be sampled stored and analyzed in the

laboratory.

* Sampling frequency: 1 sample / 1 location x 5locations.

* Standard reference: QCVN 09-MT:2015/BTNMT: National Technical Regulation

on groundwater quality.

* Results of the analysis: (see the below table)

90

Table 2.21. The analysis results of underground water quality

TT Parameter Unit NN01 NN02 NN03 NN04 NN05

QCVN 09-

MT:2015/

BTNMT

1 Temp oC 26.2 25.9 26.8 26.5 26.2 -

2 pH - 6.1 6.4 7.0 6.3 7.1 5.5 – 8.5

3 Turbidity NTU 3.2 3.5 4.0 4.2 3.7 -

4 Hardness mg/L 218 311 259 426 348 500

5 TS mg/L 325 445 388 351 324 1500

6 NH4+ mg/L 0.05 0.06 0.04 0.03 0.07 0.1

7 NO3- mg/L 7.8 7.5 4.6 5.9 6.7 15

8 NO2- mg/L 0.4 0.4 0.5 0.7 0.2 1.0

9 PO43- mg/L 0.012 0.014 0.021 0.017 0.014 -

10 Cl- mg/L 125 148 115 98 133 250

11 SO42- mg/L 182 213 163 197 205 400

12 Fe mg/L 1.1 1.7 0.9 2.1 1.4 5

13 Cd mg/L KPHT KPHT KPHT KPHT KPHT 0.005

14 Pb mg/L 0.005 0.003 0.002 0.004 0.002 0.01

15 Hg mg/L KPHT KPHT KPHT KPHT KPHT 0.001

16 Cu mg/L 0.26 0.22 0.19 0.19 0.25 1.0

17 Zn mg/L 1.1 1.1 1.0 1.4 1.1 3.0

18 As mg/L 0.02 0.01 0.01 0.02 0.01 0.05

19 E.coli mg/L KPHT KPHT KPHT KPHT KPHT KPHT

20 Coliform MPN/100mL KPHT KPHT 1 KPHT 1 3

Note: KPHT: Not found

QCVN 09-MT:2015/BTNMT: National Technical Regulation on groundwater quality.

Comments on underground water quality:.

Comments on underground water quality: The results of field survey and

analysis of underground water samples in the study area showed that: all the indicators

are within the permissible limits of QCVN 09-MT:2015/BTNMT, no signs of

contamination of groundwater. Besides, the survey team also consulted local residents

and local leaders on water use and all comments confirmed groundwater resources in

the project area is relatively good. The people exploited and used groundwater for the

purpose of eating and living for years from the form of wells.

c. The soil environment

* Sampling Location:

To assess the quality of the soil environment project area. we conducted

sampling and analysis of soil samples along the route. The sampling locations are

shown in the following table:

Table 2.22. Location of soil sampling in the project area

91

No Sampling Location Coordinates

Samples

Features

X (m) Y (m)

1 Loc Chau ward. Bao Loc

city. Lam Dong province 1273517.923 1273517.923 Đ01

Coffee land,

surface land,

reddish brown,

no agglutinate

soil, few trees’

roots

2 B’Lao ward. Bao Loc city.

Lam Dong province 502546.451 502546.451 Đ02

Tea land, surface

land, reddish

brown, no

agglutinate soil,

few tree’s roots.

3 Loc Son ward. Bao Loc

city. Lam Dong province 1274230.991 1274230.991 Đ03

Resident land,

surface land,

reddish brown,

no agglutinate

soil, few tree’s

roots.

4

Loc Nga commune. Bao

Loc city. Lam Dong

province

504706.772 504706.772 Đ04

Coffee land,

surface land,

reddish brown,

no agglutinate

soil, few tree’s

roots.

5

Bau Ham 2 commune.

Thong Nhat district. Dong

Nai province

1272483.711 1272483.711 Đ05

Resident land,

surface land,

reddish brown,

no agglutinate

soil, few tree’s

roots.

* Assessment criteria and methods of analysis

The sampling method is prescribed by TCVN 5297-1995.

The criteria and methods of analysis of soil quality is shown in the following

table:

Parameters Analytical methods

Cu TCVN 6496:2009

Hg TCVN 8882:2011

Zn TCVN 6496:2009

Cd TCVN 6496:2009

Pb TCVN 6496:2009

As TCVN 8467:2010

92

* Frequency: 1 sample /1 location x 6commune / ward

* Standard reference: QCVN 03-MT:2015/BTNMT: National technical regulations on

permissible limits of heavy metals in soil.

* Results of the analysis:

- The analytical results are shown in the following table:

Table 2.23a. Results of soil quality analysis in the project area

TT Analysis

parameters Unit

The results QCVN 03-

MT:2015/BTNMT

Đ01 Đ04 Đ05 Forest

land

Residential

land

1 Cu mg/ kg dry

soil 27.9 38.5 25.9 70 70

2 Hg mg/ kg dry

soil KPHT KPHT KPHT - -

3 Zn mg/ kg dry

soil 30.7 42.7 36.8 200 200

4 Cd mg/ kg dry

soil 0.89 0.65 1.25 2 5

5 Pb mg/ kg dry

soil 65.6 45.6 53.5 100 120

6 As mg/ kg dry

soil 2.8 7.2 3.8 12 12

QCVN 03-MT:2015/BTNMT- National technical regulations on land quality -

forest land: land quality serves forestry purposes

Table 2.23b. Results of soil quality analysis in the project area

TT Analysis

parameters Unit


MT:2015/BTNMT

(Agricultural land)

Đ02 Đ03

1 Cu mg/ kg

dry soil 41.2 16.6 50

2 Hg mg/ kg

dry soil KPHT KPHT -

3 Zn mg/ kg

dry soil 35.5 29.4 200

93

TT Analysis

parameters Unit


MT:2015/BTNMT

(Agricultural land)

Đ02 Đ03

4 Cd mg/ kg

dry soil 1.11 1.34 2

5 Pb mg/ kg

dry soil 37.4 28.3 70

6 As mg/ kg

dry soil 3.9 5.7 12

* Note: KPHT: Not found

QCVN 03-MT:2015/BTNMT- National technical regulations on agricultural

land: land quality serves agricultural purposes.

Comments on soil quality:

According to table 2:23, the quality of soil in the area have reached the limit

allowed by QCVN 03-MT:2015/BTNMT.

2.1.4.5. Current status of biological resources

Construction site for Dau Giay intersection, mainly habitants area concentrate,

so urban ecological system is main in here and agriculture ecological system with

growing perennial tree also exist. For constructing Bao Loc city by-pass, soil part that

used for implementing construction activites is agriculture soil, mixing small habitants

group distributes scatteredly along the route, thus, ecological system of the area is

mainly agricultrure ecological system, artifical forest ecological system and urban

ecological system. According to survey results of CEPT as well as seeing the other

primary documents show that in the area of project, there are not species listed in

Decree 32/2006/ND-CP, the Red Data Book of Vietnam or in the IUCN Red List 2006

- Artifical forest ecological system mainly concetrated in Bao Loc city by-pass

with small area, species components is monotone, so it is not divided layers between

flora species. Main species at ther are Eucalyptus, Acacia auriculiformis. Additional,

under the species, they are shurb: Eupatorium odoratum L, Ageratum conyzoides,

Tithonia diversifolia, Achyranthes aspera L… and grass types.

- Agriculture ecological system

+ Dau Giay intersection area: Agriculture ecological system at there is mainly

rubber grow area (Hevea brasiliensis) and it is merely ecological system with 1 layer,

shurb and grass plate due to people elemilate usually, leading to weak develop.

+ Bao Loc city by-pass:

94

At there, with bazan red soil character of high land, so agriculture ecological

system is fruit tree and perennial tree. Main species in ecological system include: O

Long tea (Camellia sinensis), Coffea canephora, Coffea liberica,

durian( Durionaceae), avocadoBơ (Persea americana), mango(Anacardiaceae)…

http://vi.wikipedia.org/wiki/Ch%C3%A8_(th%E1%BB%B1c_v%E1%BA%ADt)

http://vi.wikipedia.org/wiki/Anacardiaceae

95

Figure 2.2. Characteristics of ecological colonization around intersections Dau Giay

Residentiala

reas

Rubber

plantations

Rubber

plantations

Administrative

center of Thong

Nhat district

Rubber and cashew

plantations

Notes:

: Scope of the project

96

Figure 2.3. Characteristics of ecological colonization from Km0+00 to Km5+00 on Bao Loc city bypass

Residential areas

and coffee

plantations

Coffee

plantations

Residential area

sin the center of

Bao Loc city

Coffee and tea

plantations

Coffee and tea

plantations

Dai

Bin

h

river

Dai

Bin

h

river

Dai

Bin

h

river

Notes:

: Bao Loc city bypass

: Marks

97


Dai

Bin

h

river

Dai

Bin

h

river

Dai

Binh

river

Loc Son

industrial

areas

Residential

areas in the

center of Bao

Loc city

Coffee and tea

plantations

Amusement

parks

Coffe

plantations Dabrim

stream

Notes:


: Marks

98


Coffee

plantations

Coffee

plantations

Coffee and

fruit trees

plantations

Residential

areas, and

coffee and

fruit trees plantations

Residential

areas in the

center of Loc

Nga commune

Notes:


: Marks

99

2.2. Socio-economic conditions

2.2.1. Economic Conditions

Implementation area of the project goes through 6 wards (communes) of the

Thong Nhat District (Dong Nai province) and Bao Loc city (Lam Dong province).

The process of community consultation was carried out by CEPT in six wards

(communes) of the project area. The figures are quoted from the Report in 2013 and

are summarized in Table 2.24

In general. all communal areas along the project have good economic

conditions compared to other regions. The process of industrialization - modernization

takes place every day that opens up many opportunities for economic development for

the government as well as local people, the Restoration and Improvement of National

road No. 20 not only provides an opportunity for people in the region to improve

living standards of the trade to facilitate the trade of phanm crops but also from trade

in services along road.

100

Table 2.13. Statistic data of social economic characteristics at positions belonging to the project scope

TT Category Unit

Thong Nhat district (Đồng Nai

province) Bảo Lộc city (Lâm Đồng province)

Bàu Hàm 2 commune

Lộc Sơn

ward

Lộc Tiến

ward

B’Lao

ward

Lộc Châu

commune

Lộc Nga

commune

1 Population and area

- Area Km2 20.18 12.1 12.65 11.2 33.2 16.12 - Population Person 20,282 13,983 12,659 13,054 16,239 9,292 - Density Person /km2 1,005 1,156 1,001 1,165 489 576

2 Income

- Agriculture households 1,120 3,300 320 1,300 3,100 1,853 - Handicraft households 1,951 769 1,920 590 490 507 - Trade and

services households

1,101 812 715 956 525 352

- Average income million

/person/year 36.1 38.3 40.8 41.93 37.5 23.1

- Poverty rate % 1.47 2.2 1.8 1.2 1.9 2.13

3 Agricultural production

Agricultural production

- food ha 612 516 143 397.7 627 726 - Other plants ha 1,011 335 903 420 716 432

Breed

- Cattle Number 102 257 178 243 356 50 - pig Number 5,200 6,800 7,300 8,300 9,500 4,600 - poultry Number 434,000 72,600 120,000 25,800 95,700 822,800

4 Activities

- Using

electricity

% 100 100 100 100 100 100

- Use clean water % 99 100 100 100 80 85

5 Technical Infrastructure

- school CT 6 2 3 2 3 2

- Health Station CT 1 1 1 1 1 1

- Market CT 1 1 1 1 1 1

101

Note: CT (work); TM – DV (Trade and services).

Source: Data collection and investigation of economic - social made by Center for

Science. Technology and Environment Protection Transportation. 02/2015.

2.2.2. Economic conditions of the households along the project area

2.2.2.1. Dau Giay intersection

In Bau Ham 2 commune, economic activities are quite diverse in which people

take part in commercial activities - services and manufacturing industries which

accounted for 75.4%, with all business types including: Motels, mechanical repairs -

machinery, agricultural trade, motor trade... Agricultural activities still takes place but

mostly for industrial crops such as rubber trees... In particular, the structure of

economic activities of Dau Giay intersection area as follows: 137 people in total were

surveyed with 27.7% doing services; 21.2% as students; 1.5% as farmers; 9.5% as

workers; only 2.9% people work for state agencies; 8% as businessman; 13.9% as

pensioners and unemployment accounted for 1.5%.

The average income is estimated at 36.1 million VND per person.year,

including 62.5% of households with average income above 2 million VND per month;

8.3% of households with average income from less than 1 million to 2 million VND

per month; 25.5% of households with incomes from 500 thousand dong to less than 1

million VND per month; 4.8% of households with average incomes below 500

thousand dong per month.

2.2.2.2. Bypassing routes in Bao Loc city

Along the bypassing route along Bao Loc city, economic activities are mainly

agricultural crop including: Coffee, tea, fruit trees, vegetables... Commercial activities

- services mainly take place by residence along National highway 20. According to our

survey, career structure as follows: 4.5% as workers, 4.9% working in trading -

services, 3.7% as seasonal hired labor, 31.9% as farmers, 2.5% working for

government agencies, 1.1% peple working for handicraft production, 21.3% as

students and 7.1% as retired people.

Average income is in the range between 23.1 and 41.9 million per person per

year. Average income per person per month which are above 2 million accounted for

62.64%, income from 1.2 million to 2 million VND per month accounted for 16.5%,

20.9% of people have under 1.2 million VND average income. Average cost per

month for a household is 11 million VND; the majority of households spends on basic

needs such as food, electricity, transportation and tuition.

2.2.3. Social conditions of local areas of project area.

2.2.3.1. Dau Giay intersection

The criteria represents the social conditions of Bau Ham 2 Commune, Thong

Nhat District, Dong Nai Province as follows:

102

The amount of Households: The number of people in the affected

households which is from 1 to 3 people in Thong Nhat district is 20.8%. The

percentage of households with from 4 to 6 people is 50% and that of over 6 people is

29.2%.

Genders: The ratio of male of the surveyed households in Bau Ham 2

commune, Thong Nhat district is lower than that of female with 54.7% and 45.3

relatively.

Ages: According to the survey, 19% of the population are under the age

of 15 and 14.6% of the population are over 60 years old, the rest who are in the

working age accounted for 66.4%.

Education: 124 6 - year - old -and - older people were surveyed. 19.4%

as 24 people have primary education, 24.2% people have secondary level, 30.6%

people have high school level, 20.2% people have college degrees or higher and 5.6%

people did not participate in formal training.

Housing conditions: Housing in Thong Nhat district is quite diverse,

including the level 2, level 4 and temporary accommodations, but most of them are

level 4. Of the 24 households surveyed, there are 8.3% houses as level 2.

Water sources and sanitation: According to the survey, 100% of

households use well water. As drinking water, 50% of household use well water, 50%

of the household perchase clear water. Regarding sanitation, 87.5% of household have

flush toilets and the remaining 12.5% of household use septic tanks.

Schools, hospitals (clinics): There are 2 infrastructure systems for public

services including: Kindergarten, Primary, Secondary Base and CHS.

2.2.3.2. Bypassing routes in Bao Loc city

Households: The average number of people per household in the city

who is affected in Bao Loc is 31.3% for under-3-people householde; 56% of

households which have from 4 to 6 people and 12.6% of the household had more than

6 people. The proportion of families which have from 4 to 6 people in Loc Nga is

highest as 60.42% and equal to that in B'Lao ward and families, this number in Loc

Chau is 18%.

Genders: Generally the male rate accounting for 51.3% is higher than

that of women which is 48.7%. However, the sex ratio at each commune marked the

highest gender gap (male: 57.9%, female: 42.1%) in Loc Son commune.

Ages: The rate reached 16.9% of under 15 year old people, people over

60 accounted for 10.2% and the remaining number are in working age accounting for

72.9%. In terms of individual communes, the highest ratio in Loc Chau of under 15

year old people accounted for 24.3% and the lowest ratio of that is in Loc Son

103

accounting for 10.7%. Loc Son also has the highest ratio of people over age 60, the

lowest rate is 8.76% in Loc Nga commune.

Education: Of total 751 people surveyed, there are 35.4% people have

secondary level, 26.2% people have a high school degree, 18.2% peolple had primary

education and 13.2% people have college degrees or above, 6.9% people did not

participate in formal training programs yet. Loc Son commune's ratio is 18.5% and the

highest rate rate is in Loc Chau Commune. The highest percentage with high school

level is Loc Nga accounting for 29.6% while the lowest rate is B'Lao Commune.

Housing conditions: Mainly level 4 households and the temporary

houses. In Bao Loc, 164 of 182 surveyed households belong to level 4 household, and

2 of 182 (1.1%) are temporary houses, while both villas and level 1 have 2.7% of the

total households.

Property Ownership: Most households have electric fans with 80.2%,

96.7% of households have television, 94.5% of households use gas stoves, electric

cookers, rice cooker, 78% of households have refrigerators, 58.8% have washing

machines. 95.1% of households have motorcycles, 21.4% of households use water

pumps, 12.1% of the household have tractors, and only 4.9% of households have cars .

Water supply and sanitation: More than a half of households use well

water (79.1%), 24.7% of household water use tap water, 2.2% of households use

rainwater. For drinking water source, about half of all households use wells (56%),

15.4% of households use tap water, 33.5% families use bottled water, 6% families use

rainwater for drinking. 67.6% of households use flush toilets, 26.9% of households use

toilets with septic tank, 5.5% use buried toilets.

Schools, hospitals (clinics): There are public services such as:

Kindergarten, elementary, middle, school and health center. Besides, there are some

larger works such as Lam Dong General Hospital new, Ton Duc Thang University... In

general, accessing to public infrastructure is fairly easy

2.2.3. The conditions of traffic and transport planning in the project area

2.2.3.1. The traffic conditions in expansion area of overpass intersection of Dau Giay

This area is the beginning point of the project in Km0 – National highway 20.

communicating with the national highway 1A in Km1832 + 400 located in Thong

Nhat District of Dong Nai province.

In the study area,the related transport network are synthesized as follows:

The Highway project of HCMC - Long Thanh - Dau Giay: There is the

beginning point in the intersection of An Phu, District 2, Ho Chi Minh City, the ending

point isat Km1829 + 850 of the National highway 1A.The total route length is 54.794

km. Scale highway is type A. Bn = 27.5m,which is currently under the construction.

104

The Highway project of Dầu Giây - Liên Khương: The beginning point is at

Km1829 + 850 on 1A national highway (about Km54 + 794.07 highway of the Ho Chi

Minh City - Long Thanh – Dau Giay). Ending pointis at about Km208 + 250 on the

highway Lien Khuong - Dalat. Standard highway is type A. Speed design changes

depending on the sections from 100-120 km / h. Scale cross-Bn = 25.5m. the passage

through the town Bn = 27.50m landscaping separators.

The construction investment project for Bien Hoa city bypass under BOT

form:From the beginning point of the project at Km0 + 000 (the project kilometer) –

conciding with Km1851 + 714 (of the National Road 1), the rout interchanges with the

North – South railway (about Km 1 + 000 of Bien Hoa city by-pass or Km1679 + 870

of the Hanoi - Ho Chi Minh railway) goes away Bien Hoa city. Long Binh delivery

depot is junction at gradewith provincial Highway No 15 and then connecting with the

highway 51 at Km5 + 000 of the highway 51). The total length of the route is about

12,050.7 m

2.2.3.2. The traffic conditions in the construction of National highway 20 section

shunting route of Bao Loc city.

The Bao Loc city is located on the transport routes to facilitate the exchange of

goods with the economic regions in the province and the neighboring provinces. it is

also favorable way for Bao Loc city to develop the economic development as well as

exchanging and receiving advances in science and technology and new technologies to

local.

Traffic and inter-regional relations: There are two highway passing through the

Bao Loc city: Highway No 20 towards the East to Da Lat city(about 120 km

long).There are some other national fishbone highwaysin this Highway: In the town of

Di Linh - Di Linh district: towards the North to Dak Nong province and to Binh

Thuan province in the South. At the junction of Lien Khuong - Duc Trong (adjacent

Highway 27): towards theNorth to the province of Dak Lak. At the junction Phi Nom

(adjacent Highway 27): towards the East to Ninh Thuan province.

The Highway 55 junction of Loc Son (junction Le Minh Sanh) going to

hydropower plant of Ham Thuan - Da Mi. This Highway 55 and the Highway 28 will

create a network of interconnected road traffic at the gateway to the northwest of Binh

Thuan. connecting South Highlands (Bao Loc city) to the South East coast. creating

new dynamics for economic and social development. security and defense not only for

Binh Thuan but also for the South and the South East Highland with faster rate. There

is ability to open some new tours from Vung Tau - Binh Chau - La Gi - Bien Lac Lake

- Da My lake - Da Lat and vice versa.

Mainly by the Highway 20 from Da Lat city to the South of the city, passing

Bao Loc col to Da Huoai - Tan Phu - Dinh Quan connecting with the National

Highway 1A at Dau Giay junction. The route from Bao Loc - Dau Giay has a length of

105

120 km. Towards the north of Bao Loc city, the city will create more favorable traffic

system. shortening the time from Bao Loc to Ho Chi Minh City and Da Lat and from

Bao Loc to Lien Khuong Airport – Duc Trong. Towards the South of the city. over a

half of the Loc Son col - Dai Binh junction - Highway 55 - Tanh Linh – The National

Highway 1A. This total length is 140km. The Highway No 20 running through the city

center with 4 km length from Loc Son to Tien Loc ward will be asphalt upgraded and

expanded the pavement of 15m, sidewalks of 6m on each side.

The local transport network will be invested to go the center of wards or

communes.

It is expected that in the future. there will be a highspeed section of Dau Giay

(from Dau Giay junction with Highway 20 going to Lam Dong - Thong Nhat district

of Dong Nai province - Lien Khuong (Duc Trong - Lam Dong) running through the

Northern of the city.

Currently and in the future. the road network of the city of Bao Loc is meeting

the socio-economic development requirements. Creating economic relationships in a

associated large area for Bao Loc town to become a regional economic key in the

Southern of Lam Dong province.

106

CHAPTER III. ENVIRONMENTAL IMPACT ASSESSMENT

The environmental impacts of the project will be identified and adequately

assessed based on the assessment of the natural environment condition of project area,

the volume of construction, construction technology and public consultation. These

impacts is reviewed during project’s periods including: pre-construction, construction

and operation periods. Depending on the source characterics and object impacts are

affected, the scale/ intensity of the impact of environmental impacts that are classified

into different levels, including: a strong impact, the average impact, low effects and no

impact or effect is not clear. As follows:

Impact level Dicription Level

Strong impact Environmental impacts can damage any

environment’s factors or this create environmental

change markedly at wide scope.

5

Average impact Impacta can cause impaired part of the value of the

components of the negatively affect certain

components of the project area population.

3

Low impact

Impacts can cause impaired abit value of the nature

environment components or negatively affect apart

of the project area population.

2

No impact (or the

impact is not clear)

Impacts do not virtually change component values

the natural environment and these does not affect

the economical - social condition of projects and

surrounding area.

1

In terms of appearence ability levels impacts, the impacts can be broken down as

follows:

Appearence levels Definition Level

Guarantee Environmental impacts can happen at project higher

frequency each week if mitigation impact is not

implemented.

5

Can happen The impacts will happen more times each week. 3

Not sure The impacts will happen one or two times each

week.

2

Rarely The impacts will happen rarely during construction

period.

1

In term of recover abilities, these impacts can distribute as:

107

Recover impact ability: The impacts can impact on environment’s component

and cheracter after that, the environment component can recover.

Rreversible impact: The impact makes the composition and characteristics of

the environment permanently move to a new status

3.1. Assessment and forecast impacts

Until now, almost of construction activity for pgrading and renovation of

Highway 20, Sention Km123+105,17 at Dong Nai and Lam Dong provinces

completed and operation. Therefore, the environmental impact assessment will

implement for the project will include only the following items

Construction on Highway 1 overpass at Dau Giay intersection and expandation

from Km0 QL20 - Km1 + 880.

Construction of Bao Loc by-pass of National road No. 20 (there is Minh Rong

bridge on Dabrin stream).

Construction of 03 assigned contours (the entrance, the exit of bypass and the

intersection of National road 55);

Construction site clearance;

Arranging 3 construction sites for bypass that expectedly constructing the bypass;

one position for viduct construction.

Disposal activities at some locations.

(detailed location is presented in Chapter 1 of the EIA report)

The impact of the project on the natural environment and society is summarized

via simple matrix below:

108

Table 3.1. The matrix identifies the environmental effects of the project period

Construction

periods of

project

Các vấn đề môi

trường

Preconstruction

period

Construction period Operation

period

Resset- lement

Clear ance

Excava- ted

embank-

ment

Asph al

Construc -tion Dau

Giay

overpass

Intersec- tion

Bridge

Constr uction

bypass

Bridge

Meter ial

transp orta tion

Cement

conc rete

mixing

plant

Mate rial

store

area

Maitain -ance

Rent

for

worker

Equip -ment

New

bypass

I Nature condition

1.1 Air quality 2 2

2 3

3 5

2

3

3 5

2 5

3

5

3 3

2 1

1 1

2 1

2 2

2 1

1.2 Surface

water 1 2

2 3

5 3

2

1

2 2

3 3

2

2

3 3

2 3

3 3

3 3

2 2

2 2

1.3 Noise and

Vibation level

1 1

3 3

3 5

3 3

3 5

3 5

3 3

3 3

2 2

2 2

2 2

3 3

3 3

1.4 Underg round

water

1 1

1 1

2 2

1 1

2 3

2 3

1 1

2 1

1 1

1 1

1 1

1 1

1 1

1.5 Soil

erosion and

sedime ntation

1 1

2 2

5 5

1 2

2 3

3 5

3 3

2 3

3 3

2 2

1 1

1 1

1 1

1.6 Plant cover 2 2

3 3

3 3

1 2

1 1

2 3

1 1

1 1

2 2

1 1

2 1

1 1

2 2

1.7 Hydro logy

1 1

1 1

2 3

1 1

1 1

3 5

1 1

1 1

1 1

1 1

1 1

1 1

2 3

109

1.8 Land slide 1 1

1 1

3 5

1 1

1 1

3 3

1

1 1

1 1

1 1

1 1

1 1

3 3

1.9 Landscape 1 1

3 5

3 5

2 2

2 1

2 3

2 1

2 1

2 3

2 1

2 3

2 5

2 5

1.10 Solid and

hazardous

1 1

2 3

3 5

2 3

3 3

2 3

2 2

3 3

3 3

3 5

3 3

2 2

1 1

II Social environment

2.1 Invol- untary resetlement

3 5

1 1

2 2

1 1

2 2

2 2

1 1

1 1

2 2

1 1

1 1

1 1

1 1

2.2 Econo- mical

activity

3 5

1 1

+2 3

+2 2

3 5

2 3

2 3

+2 2

2 2

1 1

+2 3

+2 3

+

2.3 Material

cultural

works

2 3

1 1

2 2

2 1

2 2

1 1

2 2

1 2

1 1

1 1

2 1

1 1

2 2

2.4 Safety 2 3

1 1

3 5

2 3

3 5

2 3

3 5

2 2

2 2

2 1

2 2

2 3

+

2.5 Heathly 2 3

1 1

3 3

2 2

2 3

2 3

2 3

2 3

2 2

2 2

2 2

1 1

1 1

110

3.1.1. Environmental impact assessment in the preparation phase of the project

The main activities of the project in the preparation phase have been identified

as the objects which creates the sources related to waste and not related to waste

impacts, including:

- Construction site clearance;

- Leveling of construction sites and duty roads.

Table 3.2. Summary of impact resources arising in the preparation phase

TT Activities Type of waste/Sources of

waste

Periods Space

Sources of impacts related to waste

1 Demolition of

buildings

Dust, waste. Estimating waste

averagely from demolition of

buildings is 23m3/house (by

supervision experience)

30 days Residential areas of

National road 20,

National road 1,

Provincal National

road 769and along

Bao Loc bypass

2 Tree cutting Garbage, wood, branches,

leaves. Cut tree with 75.611

coffee tree, 211.610 tea tree,and

28.722 other tree as fruit trees.

30 days Belonging the route of

the Bao Loc by-pass

3 Preparation of

construction

site and duty

roads

Dust, waste (packaging, paper

bark, wood chips)

30 days The construction sites

at the Dau Giay

intersections and the

by-pass route of

National road 20

Sources of impacts not related to the waste

1 Demolition of

buildings

Noise, Vibration 30 days Residential areas of

National road 20,

National road 1,

Provincal National

road 769and along

Bao Loc bypass

2 Soil disposal Impact on travelling by waste

transportation

During

demolition

process

Belonging the route of

the by-pass route of

National road 20, Dau

Giay intersections area

at Thong Nhat district,

Dong Nai province

3 Occupation

land

Occupied residential land,

farmland, infrastructure (1.5 ha

Permanently

or temporary

Belonging the route

Bao Loc bypass

111

land appropriated project types

at intersections 1,58ha Dau

Giay and residential land;

48,48ha agricultural

production land in the city of

Bao Loc)

4 Involuntary

resetlement

Occupation of residential land,

agri land and infrastructure

including: 100 households at

Dau giay intersection, 525

effect households and 74

resetlement house holds at Bao

Loc bypass

Permanently Belonging the route

Bao Loc bypass

A. Assessment and prediction of the impacts of waste generation sources

3.1.1.1. Impacts on air environment

* Waste / waste sources

- In the preparation phase, the source affecting the environmental quality of air

is dust, arising from:

+ Activities of Demolition of buildings;

+ Activities for construction site leveling.

* assessment:

+ Air pollution from building demolition activities.

Dust volume generated by works demolitionativities based on factors, such as:

material of works, work scope, humidity and climate condition. Construction

supervision experience for the same projects show that house demolition caused

pollution issue over the standard (QCVN05:2009/BTNMT) 2 – 3 times at distance 30÷

40m with current wind direction from demolition site.

When carrying out the demolition of buildings, leveling, it will create the

participation of the machines and equipments, such as excavators, bulldozers,

transportation trucks. In their operation, they will generate the emissions as CO, CO2,

SO2, NOx, dust...with the loads as:

Table 3.3. The amount of dust emissions and air pollution emissions when

burning 1 ton of fuel (For diesel vehicles from 3.5 to 16 tonnes)

Pollutants Coefficient of pollution (Kg / ton)

SO2 20S

NOx 55

112

CO 28

HC 12

Dust 4,3

Source: World Health Organization (WHO) - S: sulfur in oil according to QCVN

01:2007/BKHCN is 0,05%.

Table 3.4. Expected participation of means for demolition and fuel consumption

TT Type of equipments Oil consumption norms (litle / shifts)

1 Bulldozers (130CV) 54,6

2 Excavators (1m3) 74,52

3 Excavators (2m3) 86,64

4 Trucks (10 tons) 56,7

Source: Circular No. 06/2005 / TT-BXD dated 15 / 4 / 2005 of the Ministry of Construction.

The concentration of dust in the area of operation of the machine can be estimated

as follows:

Cair pollutant - dust = k* W/ (S * h), mg/m3

In which:

+ k: factor of dust emissions (according to Table 3.1).

+ W: The volume of consumed fuel (in table 3.4, the density of diesel is

average of 830 kg / m3).

+S: The area of the emissions gas and dust emissions (taken from the area that

is occupied by machines of demolition).

+h: High levels of dust emissions from the ground (taken by the machine

height, averaging of 2m).

Table 3.5. Emissions of air pollutants generated by the demolition process

No Type of machines Concentration (mg / m3.s)

SO2 NOx CO HC TSP

1 Bulldozers (130CV) 0,015 0,824 0,420 0,180 0,064

2 Excavators (1m3) 0,020 1,125 0,573 0,245 0,088

3 Excavators (2m3) 0,024 1,308 0,666 0,285 0,102

4 Trucks (10 tons) 0,016 0,856 0,436 0,187 0,067

In order to assess the impact of the operation of the means of demolition, we

conducted the forecast the emissions of dust and air pollutants from these devices

according to space. Gaussian model is used to simulate the propagation.

113

2 2 2

2 2 2( ) ( )

2 2 2

2y z z

y z H z H

zy

MC e e eu

In which:

C (x, y, z): concentration (mg / m3) in a location (x, y, z)

M: concentration of pollutant (mg/m3.s)

u: Average wind speed (m/s)

H: height of emission sources (m)

x: distance downwind (m)

y: horizontal distance at right angles to the axis x (m)

z: height of calculation point (m)

σy,σz: wide diffusion coefficient in the direction (y) and vertical (z) (m)

According to Martin, diffusion coefficient of the atmosphere is determined by

the formula:

σy = a*x0,894

σz = c*xd + f

In which: a, c, d and f corresponding to each level of atmospheric stability

Table 3.6. Correlation coefficients with a stable level of atmospheric

Atmospheric stability a x < 1km x > 1km

c d f c d f

A 213 440,8 1,941 9,27 459,7 2,04 -9,6

A – B 156 106,6 1,941 1,3 108,2 1,098 2

B 104 61,0 0,911 0 61,0 0,911 0

Table 3.7. Decentralization of atmospheric stability (according to Turner, 1970)

Wind speed (m/s) Atmospheric

stability

<2 A

2-3 A-B

3-5 B

The average height of emission sources is 2m and the height of forecast is 2.5m.

Based on the results of the climate characteristics of Dong Nai and Lam

Dong provinces, project area has the prevailing wind direction of northeast and

southwest. The average wind speed in the region of 2.1 m / s. Thus, the level of

atmospheric stability is AB.

Apply some meteorological conditions and emission figures in Table 3.5 on the

Gauss formula, it would result in the concentration of emissions from the used

equipments as follows:

114

Table 3.8. Results of emission levels from used equipments

The

distance

(m)

10 20 30 40 60 80 100

Viet Nam

regulations

05:2013/BT

NMT

SO2 0,0095 0,0034 0,0022 0,0017 - - - 0,35

CO 0,261 0,0943 0,062 0,047 0,034 0,027 0,023 30

HC 0,112 0,04 0,026 0,02 0,014 0,012 - 0,5*

TSP 0,32 0,28 0,22 0,19 0,15 0,12 0,09 0,3

Note: - The above calculation results are compared with the average value of 1h

- The HC value will be compared with Viet Nam regulation of 06:2009/BTNMT

Thus, when conducting the demolition and relocation of houses and public

utility will form the exhaust fumes, dust and dispersed into the surroundings at a

height of 2.5 m except TSP value is higher than the limit allowed by QCVN05:

2013/BTNMT at distance <15m.

The dust emission loading at the building demolition activities and clearance

process. However, within the scope of the project, at the intersection Dau Giay, the

number of demolished homes are mainly tabernacle; at the Loc Chau and Loc Nga

communes of the by-pass route in the National road 20, the number of demolished

homes are relatively large (but as above, these houses are mainly temporary housing or

house level 4), so the concentration of dust is not large . The risk of air pollution by

dust from demolition activities will only occur in the time of dismantlement in a short

period of time, which will be ending when the dismantlement and waste cleanup is

completed. The period of time range from 15 to 30 days per region.

Level of impact: Small and can recover

+ Dust pollution from activities of leveling:

Experience from the construction supervision shows that the atmosphere at

distance of 25-35m from the leveling area will be contaminated by dust but not

serious (1.5 - 2 times higher than the allowable limit according to QCVN05: 2013 /

BTNMT). Time of pollution lasts about one month at each construction site and the

duty road.


+ Dust pollution from waste load and unload

Excepting dust that being sourced from demolition of house, it sourced from

unloading and loading waste to vehicles. According to fast assessment document of

WHO, dust volume sourced from unload and load is about 0,1 1g/m3. Estimating

dust volume during pre-construction phase of 281 houses demolition is 138 -

115

1380g/m3. Hoewever, those housholds is along the route, so dust concentration is not

significant.


3.1.1.2. Impact on environment and landcase

- Sources of impacts:

+ Broken tiles and bricks, mortar, steel, iron, wood ... from the dismantling of

buildings, structures demolished brick, stone, concrete structure demolition, digging

unloading the old pavement.

+ Plant cover: Based on actual survey data on the status of trees in the project

area to estimate the biomass fired when peeling vegetation cover, biomass can

calculate average vegetation with the norms as six:

Table 3.9. Solid waste from preparation period

Item Characteric Area (ha)

Volumn

- Tree cutting Biomass Plant 48,3 580 ton

- Demilidation house and

structure

Waste (Waste, Concrete,

Ceremic, wood...)

0,83 2.524 m3

- Assessment:

+ The solid wastes arising from the process of clearing and dismantling

premises such as debris, wood, steel ... usually inert environment than so often

reduces the amount of waste recycled into the environment is not significantly

+ For plant biomass obtained from the process of cleaning will create

collecting firewood for cooking daily or green manure. Therefore, the impacts are

often not great, but if a large amount of biomass, concentrated and not handled

thoroughly and easily cause a negative impact on the surrounding environment.

+ The types of waste generated from demolish process if they are not collected

and processed can emit into the environment causing environmental pollution and

landscape create favorable conditions for harmful species (mice, cockroaches ... ) .

However, the types of waste generated in this stage have very small amounts and kinds

of non-hazardous waste.

- Time: 30days

- Level of impact: Small and can not recover

B/Assessment and prediction of the impacts of sources will not generate waste

3.1.1.3. Noise level

Impact source:

116

During the preparation phase, impact factor is noise arising from the demolition

of housing activity. Noise levels arising from housing demolition activities is

determined based on:

In the preparation phase, the factors of noise impact arising from the

dismantlement of housing activities. Noise levels generated from the activities of

houses demolition is determined based on:

Typical noise level of construction equipments (trucks, bulldozers: 84,8-

94,2dBA)

The formula for calculating aggregate noise:

L= 10lg

In which:

L: the aggregatenoise level.

Li : the noise level of source i.

n: total number of noise sources.

source: Phạm Ngọc Đăng 2003. Environment air. Science and Technology Publishing House

2003

Assessment:

With equipments used in dismantlement of the houses (trucks and bulldozers) has

predicted the noise levels and noise sources declines with distance from the house

dismantlement activities. This noise level does not arise constantly, only when operating

construction equipments

To predict the noise level decline with distance from the leveling operation, using the

formula:

L= 10 lg )()( 1

1

2 dBr

r a for point source.

In which:

L: the reduction of noise in the distance r2 compared to the noise source.

r1: distance of the sound characterized the noise source (r1 = 8 m).

a: factors including the impact of noise absorption of terrain (a = 0,1 – ground

grass).

source: Phạm Ngọc Đăng 2003. Environment air. Science and Technology

Publishing House 2003.

The forecast results are presented in Table 3.10

Table 3.10. Forecast noise levels decline with distance

Activities Source of The level of noise declining with distance

n

i

Li.1,010

117

noise (dB) 10m 25m 50m 100m

Min Max Min Max Min Max Min Max Min Max

Dismantlement

houses 84,7 94,1 82,6

92,

0 73,8

83,

2

67,

2

76,

6

60,

6

70,

0

The level of noise declining over the range of trees is calculated using the formula:

Lcx = 1,5.z +

In which: 1,5.z: reducing of the noise level due to reflections of trees (z: the

number of tree lines);

: is the sum of the width of the tree lines (m);

:lowering noise level by sound sucked and diffusion in thetree

lines;

: isa coefficient indicating the acoustic impact and diffuse the sound of

tree lines, worth about (0,100,20).

source: Phạm Ngọc Đăng 2003. Environment air. Science and

Technology Publishing House 2003.

In the case of the projects, for houses, offices, schools taking the averaged z = 4;

the distance between the tree lines of 3m; = 0.15; so, Lcx = 7,5dBA. Noise level

affecting the residential area is presented in Table 3.11

Table 3.11. The level of noise from the activitiesof houses demolition

The forecasting results show that, during the daytime at the residential area will

not be affected by noise pollution due to the dismantlement activities. At night, the noise

impact is exceeding the allowable limit of 5,1dBA when using the machinery and

z

iiB

z

iiB

z

iiB

Objects

The

distance

(m)

Exceeding the allowable limit

according to QCVN

26/2010/BTNMT (dBA)

Min (6-21h) Max (6-21h)

Residential area of Dau Giay

intersection and Bao Loc by

pass

10 12,6 12,0

Residential area of Anh Mai Loc

Chau commune

(km0-km1)

5 - 10 14,7 24,1

Residential area of An Ninh-

Loc Chau commune

(km1-km2)

5 - 10 14,7 24,1

Residential area of Nga Son,

Loc Nga commune

(km15+100-km15+300)

10 - 20 12,6 12,0

118

equipment that have a high level of sound sources (however, dismantlement activities

often take place during the daytime). In which, the noise only impacts to residents who is

living at the first block, in the block behind, the noise level will be limited because of the

first block, the impact is not continuous, only when the equipments are operating.


3.1.1.4. Impacts on Economic and Social

* Sources of impacts:

Impacts on economical and social issues in this period is mainly due to land

land acquisition, relocation and resettlement housing involuntarily.

- Affected households:

+ Total number of affected households by the project is about 625 households

which have affected land, including there are 525 households in the commune / ward in

the city of Bao Loc, Lam Dong province and other 100 households in the Bau Ham 2

commune, Thong Nhat district, Dong Nai province. Of the 100 affected households in the

commune of Bau Ham 2, Thong Nhat district, Dong Nai province, there are 80

households who have affected fences, concrete floor and roof. The remaining 20

households are affected by a part of the houses but does not affecting the structure house

and not have to move the houses.

+ On the issue of relocation: In the 525 households in four communes / wards in

the city of Bao Loc, Lam Dong province, there are about 106 households who will be

affected by their houses and structures; while other 60 households will be relocated to a

new place of land due to their completely affected or the remaining land after clearance

may not be enough to survive and 46 households who have a part of structures being

affected that can move back so they should not be relocated.

- On the clearance site, there is total of 45.2 ha that will be cleared. In that:

+ The by-pass route in the National road 20 of Bao Loc City, Lam Dong province

is expected to release approximately 43.7 hectares (including land in households and

individuals: 2.16 hectares agricultural land individual family households: 48.31 ha and the

remaining land area of roads, rivers, streams, and the land managed by the commune

People's Committee);

+ The overpass at Dau Giay intersection, it is expected to release around 1.5 ha

(including residential land, golf, fencing of private households: 0,25ha; agricultural land:

0.5 ha and the remaining area is transportation land and forestry that are managed by the

district).

Table 3.12.Summary scope clearance and resettlement Impacts

119

Locations Number of affected

households

Land revocation

(ha)

Number of

displaced

households Thong Nhat district 100 1,5 0

Bao Loc city 525 50,05 74

Total 625 51,55 74

- The status of the clearance area:

0 Bao Loc city:

+ Housing: Clearance area in the by-pass route of Bao Loc city, the number of

displaced households are mainly of house level 4.

+ Buildings and structures: ponds, fences, floors, cement yard,…

+ Planted trees as coffee, tea, fruit,…

0 Thống Nhất district:

+ Housing: Clearance area in the construction of Dau Giay intersection of the

affected part are mainly the level 4 housing, the remaining affected as fences, roof, porch,

yard cement accounts the majority.

+ No affected households need to be displaced.

* Impact Assessment:

- Affects of households who lost their residential land and housing on land:

+ In the total of 206 surveyed households, 49 households (23.8%) were not

affected their houses, other architectures, the remaining of 157 households (76.2%) had

their homes and / or other structures affected.

+ In the 157 households are affected by their homes / structures, there are 60

households whose homes were affected, 26 households need to be relocated to a new

place, the remaining of 34 households will rebuild their houses on the remaining land.

+ In the Bao Loc City, Lam Dong Province, 74 households are affected their

homes located in 4 communes / wards of the province. The majority of homes forced for

relocation are house of level 4.

+ In Bau Ham 2 commune, Thong Nhat district, Dong nai province, no relocated

household are affected only their structures such as garden, awnings, fences.

- Affects of households who lost their residential land and housing on land

+ The demolition, relocation of houses of people will disrupt the lives of people

during the repair, reconstruction of houses and other structures.

120

+ Breaking residents practices, relationships neighbors, neighbors of the people

to the households in the resettlement area.

+ Changing the living conditions of the communities on the route to avoid Bao

Loc.

+ Change the livelihood of the people to change due to the new place.

+ Can create lasting grievances related to land because of inconsistencies in land

compensation process.

+ Impact on the psychology of the people involuntary displaced.

+ Reduced access to public infrastructure: The relocated households are living

in fairly good living conditions as public roads, electricity, water ... When they can be

relocated lost supplies present.

Influence on shops and services:

There are 12 households whose their service shop cafe in a small are affected / (8

stores in the Bau Ham 2 Commune, Thong Nhat disstrict, Dong Nai province and four

shops in the city of Bao Loc, Lam Dong Province). The shop has a floor area from 20m2

to 30m2 and being built in garden or land. The average income of households is 4,000,000

VND/month for the stores in Dong Nai province and 2,000,000 VND/month for the

service shops in the city of Bao Loc.

The demolition, relocation service shops will lead to people's livelihoods and

reducing disruption to the household income trading, trading at Dau Giay intersection on

the route and avoid Bao Loc. If the compensation, support rated unsatisfactory risk does

not lead to the consensus of the local population in the project implementation

- Influence on crops and trees:

The types of affected trees are identified in the survey including: fruit trees, crops,

timber trees and some other (table tree, plant complex, ..). However, the number of

affected trees is much, these contribute at mainly communes and wards of Bao Loc city,

the volum of them including: 75.611 coffee tree, 211.610 tea tree, and 28.722 other tree.

At Bao Loc city, the average land area in the household is 297,57 m2. When having the

project, each household was recovered approximately of 198.45 m2 (66.7%) an rest

average area is approximately of 128.97 m2. Garden average area of household is

approximately of 2860.5 m2 before having the project. When having the project, each

household is recovered in average of 484 m2 (16.9%) and the remaining is about 3803.7

m2 in average. The area of land for perennial crops will be affected the most with average

of 1562.8 m2 / households (19.6%). However, households currently own approximately

of 7964.34 m2 for perennial woodland so the remaining area after the recovery is still very

high with an average of about 6940.8 m2 / household.

Income is expected to be lost for the appropriation of agricultural land in the

121

province of communes / wards in the city of Bao Loc as follows:

Table 3.13. Damage assessment by land occupation

TT Kind off tree Area

(ha)

Productivity1

(ton/ha)

Quantity

(ton)

Price2

(milion)

Total

( million)

1 Cofffe 47,26 2,39 112,95 35 3.953,25

2 Tea 1,05 9,23 9,69 10 96,9

For agricultural households, loss of part or the entire area of arable land means the

reduction or loss of life, not just in the short term but also extends across generations, by

people affected so hard to buy a farmland area equivalent, because the local area project

route passes through farmland no longer to compensate for the project households

occupied.

Landless households also had difficulty moving from agriculture to other sectors

because most people in the working age of the households whose land has not been

trained in vocational schools. Most of them are local farmers do not have the skills to

work in factories, companies. However, arable land of the project only households

occupying a fraction of the total area of cultivated land per household, so damage due to

reduced income from arable land appropriated Project is not much. If there is adequate

compensation policies, in line with people's aspirations, the impact of arable land

occupation of the Project will be minimized to the lowest level.

+ In addition, there are 0.74 hectares of rubber and transportation land which

are managed State in the provinces of Dong Nai will be affected. These affected area is

focused on Thong Nhat district. The total rubber area of recovery is small. The

affected area is not large because the forestry farms is owning a lot of area in Dong

Nai province. No forest land is affected.

- Resettlement that affect the minorities:

07 ethnic minority households in the area will be affected by the project, including:

01 household of ethnic Chauro – Lộc Nga commune

05 households of ethnic K’Ho – 3 households in B’Lao ward and 2 households in

Lộc Nga commune.

01 household of ethnic Chau Ma–Loc Nga commune.

+ The ethnic household are living with the Vietnamese community. All of them

can speak and read Vietnamese fluently, all their children go to schools as pupils with the

Kinh children and even the youngest members of the household were unable to speak

1Yield calculated as reported by the Bureau of Statistics , Lam Dong province and is calculated for 1 year;

2Unit price obtained at the market price at Lam Dong on 11/2015.

122

ethnicity languge. Thesse families are engaged in economic activities and agriculture.

+ They will be recovery of the land area of less than 20% than the total area of the

household. Mainly rural land are for planting perennial trees.

Overall, the standard of living of the living standards of ethnic minority people

affected directly by the project is usually lower than the average level of the region.

Therefore, the land acquisition and demolition of their homes would create adverse

effects than the Kinh.

Level of impact: medium and can not recover

- Impactscaused by the moving of electric poles and telephone poles:

About 20 low tension poles and 01 high tension pole will be affected by the

project. This power line and poles system operated and managed by General

Electric Company of Vietnam.

According to the sequence of construction of transportation projects, the project

will build the new electricity poles and telephone poles, before cutting the power and

telephonesupply. After the completion and commissioning, project will make a

proposal for local postal to cut the old electricity and telephonetransmission system

then moving on to a newtransmission system. The detailed implementation steps are

mentioned in the design and cost of the operation is covered in the project expenditure

. So, the period of time by thatthe local people are interrupted of power and

communications is negligible. The impact caused by the relocation of power and and

telephone poles were excluded.

Level of impact: negligible

3.1.2.Impact Assessment and forecast of the construction phase

A. Impact Assessment and forecast of the impacts of waste generation sources

3.1.2.1. Impact on air environment

a. Waste /waste source activities

The activities give the rise of dust and emissions that has a potentially

impact the environment air quality, including:

- Earthworks construction activities of roadbed construction of the by-pass

route of Bao Loc city, including the intersections of handling soft soil (sand

embankment, unloading ...).

- Construction activity of Dau Giay junction with National Road 1;

- Activity of embankment and foundation excavation, construction of

abutments, piers relating to dust emissions.

Related activities:

123

+ Operation of construction equipments will generates dust and toxic gases

(NO2, SO2, CO and HC);

+ Material construction operations give the rise of dust and gases (NO2,

SO2, CO and HC);

+ Activities of concrete batching plants in the construction site raises the

dust emissions.

b. Impact Assessment

Assessment of impacts by dust and emissions to environmental air quality

b1. Dust pollution arising from excavation operation and construction (activities

of construction machinery)

- Excavation and embankment: The amount of dust generated from excavation

operation depends on whether the nature of the soil, humidity and the weather

conditions. The forecast concentrations of dust from excavation operation is based on:

The total amount of excavated soil (table 3.14);

Table 3.14. The total volume of excavation and embankment

STT items The volume (m3)

Excavated soil Embankment

soil and sand

Total

I Dau Giay overpass

1.1. Bridge and Road 4333,9 9184,4 13518,3

1.2. Ha Noi - TP HCM

section 8.518,57 9.755,94 18.274,51

1.3. Ha Noi - TP HCM

section (up branch) 721,32 27.992,73 28.714,05

1.4. QL1 - Đa Lat section 2.407,20 1.732,24 4.139,44

1.5. Ha Noi -QL20 section 1.102,87 826,36 1.929,23

1.6. QL20 - TP HCM section 509,59 514,08 1.023,67

1.7 QL1 - TL769 section 32,44 28,24 60,68

1.8 QL20 from Km0+300 -

Km2+00 13.281,98 23.723,91 37.005,89

II The by-pass route of Bao Loc city

1 Km0 – Km5+00 194.194,35 116.888,75 311.083,10

2 Km5+00 – Km10+00 681.552,88 227.406,05 908.958,93

124

3 Km10+00 –

Km15+363,17 2.276.179,19 216.049,52 2.492.228,71

Source: Total investment of the mainly project

According to the documentation of environmental impact assessment of the

World Bank (World Bank, Washington, D.C., 8/1991), pollution coefficient is

calculated by the following formula:

E = k × 0.016 × (U / 2.2) 1.4 / (M / 2) 1.3

Where: E - pollution coefficient (kg / t);

k - grain structure, with average values of 0.35;

U - average wind speed, U = 2.5 m / s;

M - average humidity of materials, M = 20%.

Calculate get dust pollution factor: E = 0.12 kg / ton, calculated with 1 m3 of

rock will have a volume of 1.75 tons. Thus, the amount of dust generated during the

process of digging up as follows:

Calculate get dust pollution factor: E = 0.12 kg / ton, calculated with 1 m3 of

rock will have a volume of 1.75 tons. Thus, the amount of dust generated during the

process of digging up as follows:

The calculation results are presented in Table 3:15.

Table 3.15. Load of dust from excavation and embankment operations

TT Construction items Space

(m) Time

(tháng) Loading

(mg/m.s)

I Dau Giay Intersection

1.1 Bridge and Road 450 18 0,406

1.2 Ha Noi - TP HCM section 997,71 10 0,247

1.3 Ha Noi - TP HCM section (up

branch) 997,71 10 0,700

1.4 QL1 - Đa Lat section 300 8 0,419

1.5 Ha Noi -QL20 section 219,35 8 0,148

1.6 QL20 - TP HCM section 215,45 8 0,080

1.7 QL1 - TL769 section 44,8 8 0,023

1.8 QL20 from Km0+300 -

Km2+00 1.762,18 8 0,354

II Bao Loc bypass

2.1 Km0 – Km5+00 5.091,31 18 1,031

125

TT Construction items Space

(m) Time

(tháng) Loading

(mg/m.s)

2.2 Km5+00 – Km10+00 4.988,95 18 3,075

2.3 Km10+00 – Km15+363,17 5.363,17 18 7,843

Note: (*)Time for excavation and embankment of road construction during months, about 6

to 7 days/week and 10hourses/day.

Sutton model used to assess the spread of dust due to excavation operation

causes emissions levels based on weather data and availability of the region:

u.

2

hzexp

2

hzexp.E8,0

Cz

2

z

2

2

z

2

(mg/m3)

Where:

C - The concentration of pollutants in the air (mg / m3).

E - Load of pollutants from waste (mg / ms).

z - The height of the calculation points (1.5m).

h - The height of the road surface from the surrounding ground (0.5m).

u - average wind speed in the area (2.5m / s).

z - diffusion coefficient pollutants under the z (m).

atmosphere in the region is A-B, which is determined by the formula:

z = 0,53 x0,73 (m)

Where:

X - he distance of the points calculated in comparison with the original sources,

with the wind blowing, m.

The assessment results with the Wind dispersal is shown in the table below:

Table 3.16. The simulation results of dust emissions by earthworks (mg/m3)

TT

Construction Item Distantce (m)

QCVN

05:2013/BNMT

(evarage,

hours)

5 10 25 50

126

I Dau giay intersection

1.1 Bridge and Road 0,225 0,101 0,045 0,026

0,3

1.2 Ha Noi - TP HCM section 0,137 0,061 0,028 0,016

1.3 Ha Noi - TP HCM section (up

branch) 0,387 0,174 0,078 0,046

1.4 QL1 - Đa Lat section 0,232 0,104 0,047 0,027

QL20 từ Km0+300 - Km2+00 0,196 0,088 0,040 0,23

II Bao Loc bypass

2.1 Km0 – Km5+00 0,570 0,256 0,115 0,067

2.2 Km5+00 – Km10+00 1,701 0,763 0,344 0,200

2.3 Km10+00 – Km15+363,17 4,338 1,946 0,878 0,510

The forcase result show:

The concentration of dust generated from construction activities retaining wall

sections, Dau Giay Street flyover will not exceed GHCP 5m at greater distance from the

edge of the construction according QCVN05: 2015 / BNTMT - National Technical

Regulations part of the ambient air quality.

Dust generated from construction activities of excavation and embankment at.

Km10 - Km15+363,17 Bao Loc bypass section, this higher than limited value

according QCVN05: 2015 / BNTMT - National Technical Regulations part of the

ambient air quality about 1,1 to 2,9 times at 50m distance.

Dust generate from excavated including dust and suspend dust. In which,

estimated by the World Health Organization, the amount of suspended dust is about

36% (Source: WHO. 1993.)

Due to the high iron fence made of galvanized steel sheets around the

construction site with the height of 2.5 ÷ 3 m so the settling dust will be limited at the

construction site, while the suspended dust can spread out the construction site and

influence the neighborhood areas.

The main subjects affected by the dust including:

In the construction site of overpass: The residential area on the left of the National

road 1A, The residential area on the left side of the National road 20, The

residential area on the both sides of the provincial National road 769 and Dau Giay

market.

In the by-pass route of Bao Loc city: The residential area of Lộc Nga commune, Bế

Văn Đàn Primary School, Kindergarten of Kim Dong 2 - B’Lao ward.

Sensitive objects are contaminated of dust from 1.1 ÷ 2.65 times higher than the

127

allowable limit. The effect of dust pollution to each object is presented in Table

3:17

Table 3.17. Assess the level of dust pollution to each sensitive objects

TT Sensitive objects Location Distance (*)

Dust levels

exceeded

limited value

1

1

Residential areas

inNational roads of 20, 1A

and provincial National

road 769 Dau Giay

overpass

5 - 10 1,8

2 Dau Giay gas station 20 0

3 Dau Giay market 70 0

4

Residential areas of Loc

Nga and Lộc Châu

communes Km 0- Km 1

By-pass

route of

Bao Loc

city

5 - 10 1 – 1,9

5

Residential areas of An

Ninh and Lộc Châu

communes Km 1- Km2

5 - 10 1 – 1,9

6

Residential areas of

National rod and Bao loc

bypass (Km 9+600)

10 - 20 1,1 – 2,5

7

Residential areas of Nasari

and Lộc Nga communes

(Km 12+750)

20 - 30 1,1 – 1,8

8

Residential areas of Nga

Son at Lộc Nga communes

(Km 15+100- Km 15+300)

10 - 20 2 – 6

Note:

(*)The distance from the edge of the road.

(1). Dust pollution concentrations exceeding 1 ÷ 2 times than allowable limit.

(2). Dust pollution concentrations exceeding more 2 times than allowable limit.

Level of impact: + The Dau Giay overpass: HIGHT

+ The by-pass route of National road 20: MEDIUM

So that: All of the subjects surrounding the project area will be affected by

dust. However, the level and period of time of these objects are different. Including:

Residential areas, shops and restaurants are located in the area near of the overpass

128

will be affected by particulate pollution.The pollution levels are high (although there is

a galvanized steel sheet fence in the construction site but due to the distance from the

location of construction to these areas are near - especially in the centreof the area for

construction of overpass, the distance is just ≤ 10m), dust pollution appearing in the

construction time is 18 months.

Dust casued by construction activities are also directly affected to the workers

within the construction site (from 4,5 ÷ 5,5 times higher than the allowable limit)

and the traffic participants arounding the construction site (with the exeeding level

of 2 - 3times than the allowable limit).

Beside the above affected objects, the dust emission also impact on the economic –

social development in the project area:

+ Business and services activity in the project area: The beside of the route

NH1, QL20 and DT769 ... almost of households have business services (cafeteria,

shop, food, grocery, fruits). these areas affected by dust pollution. So, if there are no

measures taken to prevent dust, the resident area will be affected during the

construction period, reducing the income of these objects.

+ Besides, the dust generation will also directly affect the daily life of the

residents living at project area. Dust pollution can affect human health, such as causing

respiratory diseases (diseases of the nose, lungs, eye disease ...), dust affect the quality

of the vehicles, daily use items ; Besides dust also affects the socio-economic activities

(business services, trade ...) as well as other daily activities of man. Impact mitigation

requirements

b2. Air pollution generate from material transportation

Dust from the public road: The dust kicked up from the public road under the

tires of transport could not be quantified due to a lack of input data such as the volume

of individual car transport, material moisture, cover the carrier material, the cleanliness

of the car (wheel). Experience supervising construction traffic when operating on

urban routes shows, material handling activities and give rise to the type of rock dust,

the average higher than limited value of QCVN: 2013 / BTNMT 2 -3 times, on windy,

sunny dust generated may exceed limited value to 4 times if no preventive measures

effectively.

Thus, ambient air along the project will be contaminated by dust with less

severe levels (<5 times limited value). Dust concentration reaches only GHCP

range> 80m from road centerline, downwind.

The level of impact: Large and reversible.

b3. Dust generation from construction equipments

129

Load forecasting emissions from construction equipment is calculated

according to a Gaussian model:

C(x, y, z) = {Q/(2πUσxσy)} exp(-y2/2σy2) [exp{- (Z + H)2/2σx

2)}+ exp{- (Z -

H)2/2σx2)}]

Trong đó:

C (x, y, z): content (mg/m3) tại vị trí (x, y, z)

Q: Emission intensity (: kg/s)

U: The average wind speed (m/s); U=2,3m/s.

H: height of emission source (m); H=0,5m.

x: distance along the wind direction (m)

y: horizontal distance at right angles to the axis x (m)

z: height of point (m); height of point is 2,5m.

σx,σy: wide diffusion direction (y) and longitudinal (x) (m). σx, σy depends on

the level of atmospheric stability. Based on the current status of wind speed in the

project area, the level of atmospheric stability is A-B respectively.

σx = 0,426*x0,901; σy = 0,08*x1,122

Emission intensity of construction equipments as

Table 3.18. Emission intensity of construction equipments

Equipments Emission intensity (kg/h)

NO2 TSP (dust)

Bulldozers 0,294 0,026

Excavators 0,613 0,08

Concrete mixing equipments 0,511 0,22

Water pumpings 0,375 0,032

Generators 0,154 0

Road speaders 0,150 0,05

Compactors 0,021 0,003

Trucks 0,393 0,33

Asphalt paver 0,441 0,037

Crane 0,232 0,021

Small trucks 0,150 0,05

Source: Japan Construction of Minisstry, 1983; Japan public civil work Institute, 1979;

Construction mechanization Society of Japan, 1987

Table 3.19. Result of emission load during construction period (mg/m3)

130

distant

(m) 30 40 50 60 70 80 90 100

QCVN

05:2013/

BTNMT

TSP 0,841 0,695 0,582 0,410 0,357 0,287 0,185 0,084 0,3

NO2 0,396 0,302 0,215 0,187 0,089 0,195 0,179 0,166 0,2

Results of emission forecasts showed, dust emission concentration is quite large

during operation of construction equipments, allowing only limited distances> 75m.

NO2 concentration within the permitted limits at a distance of> 50m. Thus, the

emission levels are above, exhaust and dust will spread downwind, and affect the

residential area, the sensitive points within <50m for NO2 and <70m for dust from the

source incurred.

Level of impact: medium and can recover

b4. Dust generation from concrete mixing plants

Experience environmental monitoring for construction projects of transport

infrastructure shows that, among the activities that take place at each site, activity

concrete mixing plant (mixing plant, cement silos) is on main object creates

environmental pollution by dust atmosphere, followed by emission sources of dust

from material store area, from the temporary road when vehicles traveling.

Proposes 02 concrete mixing plant capacity of 80m3 / h at 02 construction sites

including Dau Giay intersections and Bao Loc bypass area. The volumn of dust arising

from this mixing plant depends on factors such as technology, management skills, ...

According to WHO rapid assessment of the emission load of pollutants from the batching

plant concrete as follows:

+ Dust emissions directly from the mixing station: 0,05kg / ton concrete

+ Dust emissions from material store area: 142kg / 1000m2 / year

With a capacity of 80m3 / h, the emission load from mixing plant is estimated

8,8kg / h (with density of steel/ concrete is 2200kg/m3). The area of site area expected

0,75ha; 1,72ha the material store area is 240m2 (for details see the site layout construction

site). Based on the emission factor of the load WHO, dust emissions from material store

area is 0.0142 kg / h. If height is 1.5 m obtained from the ground, the dust content in the

air emissions from operations by mixing station will be:

[(8,8*109)/(1,5*7300*3600)]= 1629,6µg/m3/s

Dust volumn generate from store area will be:

[(0,0142*109)/(1,5*240*3600)]= 10,95µg/m3/s

From calculations show that emission levels of dust from concrete mixing plant is

higher than 148 times the amount of dust emissions from store area.

131

The dust generated at the mixing plant is inevitable. Stations are set away from residential

areas should object is affected construction workers. However, the construction company

will use measures to reduce emissions, such as water pray, use transfer conveyer

Impact level: Medium and reversible.caculated

Level of impacts: Medium and can recover.

3.1.2.2. Impact on surface water environment

a. Sources of impact on surface water

During construction phase, sources of impact on aquatic environment will

include:

- For construction activities of Dau Giay flyover:

During the construction phase the abutments and piers with bored technology

easily lead to waste water and sludge high turbidity and suspended solid

entering the natural drainage system in project area;

Waste water from concrete mixing plant, casting beam dumps contain organic

matter, high pH, suspended solid which lead to be the risk of intrusion into

natural sewerage system;

Spilled fuel oil and grease, clout be attached by fuel oil from construction

activities and maintenance of machinery;

- For construction activities of Bao Loc city bypass road:

Stormwater runoff during construction sector;

Soil erosion and spill;

Spilled fuel oil and grease, clout be attached by fuel oil from construction

activities and maintenance of machinery;

- The activities of construction site:

Domestic waste water for worker camps;

Waste water from maintenance of construction machineries and equipments


b1. Waste water from bentonite mixing plant for bridge costruction at Bao Lao bypass

Assessment

At Minh Rong II Bridge site, the project will use bentonite for bored pile

construction. Based on the size, depth and number of bored pile in bridge

construction positions, determine the amount of bentonite and soil around the site

arises is: 942 m3. The use of bentonite must be conducted during the siege by land

or steel to ensure no spill into soil and surface water. Waste soil and bentonite is

132

collected, store and aware handled according to the following forms:

At viduct area: waste soil and bentonite will be store at store area then to dry and

transportation to legal disposal area.

At working over the water: waste soil and bentonite will be store at store area on

land then to dry and transportation to legal disposal area

Non compliance with these collecting and treatment measurement waste soil

and bentonite make these containing surface water, degrade water quality, affecting

aquatic life, buried flow and benthic species

Impact object an level.

- Impact object including: surface water, aquatic animals and plants

- Location: Tại Km11+165,59 (Minh Rồng 2 Bridge – Dabrim stream);

b2. Impacted by wastewater generated from the concrete mixing plant

Emission sources

Within the scope of the project, concrete batching plant can be installed at the

position nearest Da Giay flyover and Minh Rong II Bridge to serve the construction

abutments, piers and molded beams. Wastewater will be generated during this process.

Impacts assessment

This type of waste water is one of the richest total suspended solid (TSS).

Compared with QCVN 40: 2011 / BTNMT, TSS in wastewater from these activities

will be 6.63 times higher than the column B and 3.4 times higher than column A. This

type of waste water discharge only when the action of concrete mixing and pouring be

done.

Sewage spill from the concrete mixing operation will pollute rivers and streams

near the construction site due to increased turbidity and TSS.

Wastewater containing solids when water penetrates quickly deposited and

accumulated on a narrow area near the spill area. Besides, with impacts covered, solids

may change physical and chemical conditions of the sediment surface. After that will

impact negatively on the ecosystem such as reducing the density of phytoplankton,

benthic buried.

Subjects affected and the level of impact

- Subjects: Drainage canal near construction site of Dau Giay intersection and at

construction position of Minh Rong bridge passing Dabrin stream in the bypass road

of Bao Loc city.

- The level of impact: SMALL.

b3. Wastewater from machineries và quipments mainentaince activities

133

Emission sources

During construction stage, machineries, equipments and vehicles implementing

construction will be concentrated/maintenance in maintenance areas are arranged

at each construction site. Along with this activity is the arrangement of the fuel

supply sector. These are activities discharge waste oil and waste solid containing

oil.

Impacts assessment

Wastewater from maintenance activities of construction machineries and

equipments include oil, suspended solid and organic matter. Table 3.20 showing

the volume and quality of waste water emited from the maintenance activities of

construction machineries and equipments based on the monitoring experience of

transport construction.

Table 3.20.Capacityand load of wastwater discharged from maintenance

operations

Type of wastewater Capacity

(m3/ day)

Concentration of pollutants

COD (mg/l) Oil (mg/l) TSS (mg/l)

From maintaining machineries

and equipments

2 20 - 30 - 50 - 80

From washing machineries and

equipments

5 50 - 80 1.0 - 2.0 150 -

200

From cooling machineries and

equipments

4 10 - 20 0.5 - 1.0 10 - 50

Total 11 30 - 49 0,6 - 1,3 81 - 124

QCVN40:2011/BTNMT, column A C=50 C=5 C=50

QCVN40:2011/BTNMT, column B C=100 C=10 C=100

Notes: Column A set value of the parameter C pollution in industrial wastewater discharged

into receiving water bodies used for drinking water supply purpose. Column B sets the value

of the parameter C pollutants in industrial waste water being discharged into the receiving

water is not used for water supply purposes.

Thus, wastewater from maintenance activities, cleaning and cooling

construction machineries and equipments at the site won’t be contaminated by oil.

However, concentration of TSS may exceed allowing limited according to QCVN 40:

2011 / BTNMT, column B.

Wastewater from the washing and maintenance of construction machineries

and equipments carrying amounts of oil leaching into the environment. When spills or

134

runoff, before entering the water, the oil will spill on the ground, a part of it will

penetrate the soil and another part going directly in to water body. Positioned near the

water source, oil will penetrate more. When entering the water, part of the oil will be

dispersed into the surroundings and spreads hydraulic regime; for lubrication, a

considerable part of the oil will settle downward bottom layer.


- Subjects:

+ Dau Giay junction: Canals are near worker camps and concentration of construction

machineries, equipments positions;

+ Bao Loc bypass route: Natural streams are near worker camps and concentration of

construction machineries, equipments positions;

- The level of impact: SMALL.

b4. Stormwater runoff

Impact sources

Rainwater runoff is formed by rainwater falling and not seep into the ground

that form the overflow on the soil surface. The nature of the rainwater was clean, but

when it sweeps over the construction area which will entrain contaminants such as

organic matter, suspended solids, nutrients, even grease. According to WHO (1993),

the concentration of pollutants in storm water as follows:

Total of nitrogen : 0,5 - 1,5 mg/l

Total of Phosphorus : 0,004 - 0,03 mg/l

COD : 10 - 20 mg/l

SS : 10 - 20 mg/l

Impacts assessment

The impact of stormwater runoff is considered primarily along Bao Loc city

bypass route. During the construction period, when the rains will appear rainfall

runoff. Stormwater runoff depends on rain regime of the project region, according to

the meteorology time of heavy rainfall in Bao Loc City area is concentrated from April

to November, this time in the amount of the average rainfall for the month is quite

high. Because construction sites are located higher than the surrounding area up

rainfall runoff on site calculated by the method according to TCXDVN 51: 2008 as

follows:

Q = q.C.F

Note:

135

Q - Flow calculation (l / s);

F - The basin area stormwater (according to the construction area);

C - coefficient of flow (for the project area taken in slope between 2% - 7% and

the cycle of rain repeats P = 5 years): 0.4;

q - calculated rain intensity (l / s.ha) and is calculated using the formula:

A.(1+C.lgP)

q = --------------------------- (l/s.ha)

(t+b)n

Note:

t – Raining time (average): 120 minutes;

p – Reset cycle of rain caculated (year): 5;

A, C, b, n: parameters determines the condition of local precipitation (Appendix

II, TCXDVN 51: 2008 / BXD, in the area of Bao Loc - Lam Dong: A = 11100; C =

0.58 ; b = 30 and n = 0.95).

With the above calculation, stormwater runoff volumes averaged formed 1,456 l

/ ha. Besides rainwater runoff washed away the dirt on the surface will also increase

soil erosion when project implement excavating and embanking roadbed. According to

the calculation results, when construcing Bao Loc bypass route will excavate and

embank 3,712,270 m3 of soil. If the estimated 0.2% of excavation and embankment

soil are transformed into suspended solid, total suspended solids will be about 7424

m3, the amount of suspended solids sludge will increase as rainfall increases and

concentration. The impact of stormwater runoff to surface water quality are as follows:

- Increase turbidity, suspended solids leads to reduce depletion of oxygen in the

water that creates huge disadvantage for aquatic animals;

- The amount of sediment formed by erosion caused by ainwater runoff coming

down the natural flow would lead to burying benthic species, aquatic plants;

- When sewage, stormwater runoff move into surface water, beside sand sand

oil also has facilities scattered from construction machineries will increase the oil in

water resources affecting surface water quality in the region , adversely affecting

aquatic life.


- Major subjects will be impacted including: Surface water quality, aquatic

animals and plants;

136

- Position: The impact of stormwater runoff presence across the road to avoid,

including the natural flow in the project area receiving rainwater runoff containing

many products of soil erosion as:

+ Natural water slots at Km1+068; Km1+313.8; Km1+582.16; Km2+750;

Km3+150; Km3+297; Km3+297 - Km3+934.95; Km4+634.5; Km6+900; Km7+179 -

Km7+772; Km8+094.36; Km9+254; Km9+909.39; Km10+438.82; Km12+142.5;

Km13+875.5; Km14+782.15;

+ Current natural streams, such as at: Km2+154.76; Km4+838.95; Km5+881.3;

Km6+378.36; Km8+500; Km11+165.59 (vị trí cầu Minh Rồng 2 - suối Dabrin);

Km12+285.77; Km13+241.63;

+ Dai Binh river (from Km0 to Km11) and Dai Nga river (from Km11 to

Km15+363.17) where receiving the flow of the stream across through bypass route.

- Level of impact: LARGE and can recover

b5. Impacts on surface water by domestic water from worker camps

Sources

This waste mainly comes from worker camps are located in the road

construction area. Domestic wastewater discharge from labor camps include waste

water from the water used to prepare the meal and bathing, personal hygiene.

Following reguration of TCXDVN 33: 2006 for town, centers of agriculture – industry

- fisheries, rural residential area per user is low average about 100 liters / day. The

amount of waste water accounts for 80% of the feed-water, according to the forecast in

the peak period will have 50 employees at each construction site (Dau Giay flyover

and Bao Loc bypass route) and the amount of waste water will be 4 m3/day. This is

type of every day waste water for 18 months in period of construction.

Impacts assessment

Major pollutant components in wastewater mainly includeeasily biodegradable

organic matter, microorganisms and nutrients such as nitrogen and phosphorus. Based

on the load factor of contaminants in urban sewage of WHO, 1993, Vol.1. "Rapid

assessment method" load generation and concentrations of pollutants in waste water as

follows:

Table 3.20. The load of contaminants in domestic waste water

No. Parameters

The load of contaminants

causing by one person/day

(g/persion.day)

Total of the load of

contaminants

(average value and 100

workers - kg/day)

1 BOD5 45-54 4.95

2 COD (Dichromate) 72-102 8.7

137

3 Suspended solid 70-145 10.75

4 Oil 10-30 2

5 Total of nitrogen 6-12 0.9

6 Amonia 2.4-4.8 0.36

7 Total of phosphorus 0.8 - 4.0 0.24

Table 3.21. The concentration of pollutants in domestic waste water

No. Parameters

Concentration

(mg/l – for 100

workers)

QCVN

14:2008/BTNMT

Cmax (K = 1,2)

Type A Type B

1 BOD5 618.8 36 60

2 COD (Dichromate) 1,087.5 - -

3 Suspended solid 1,343.8 600 1.200

4 Oil 250.0 - -

5 Total of nitrogen 112.5 - -

6 Amonia 45.0 - -

7 Total of phosphorus 30.0

Note: A column set value column C of the pollution parameters to calculate the maximum

value allowed in waste water discharged into water sources used for drinking water supply

purposes (equivalent columns A1 and A2 according to QCVN08: 2008 / BTNMT- national

technical regulations on surface water quality), column B set value C of the pollution

parameters to calculate the maximum value allowed in waste water being discharged into

the receiving water is not used for water supply purposes (equivalent column QCVN08 B1

and B2 follow : 2008 / BTNMT - national technical Regulation on surface Water Quality)

The result of calculations based on the scenario the number or workers in two

construction sites that is 100 workers showed concentrations of pollutants such as

COD, total nitrogen, total phosphorus are huge. If the source of the wasste water was

not collected and treated to meet requirements which will be discharged directly into

the environment, it will cause some water quality issues such as: water pollution,

increased risk for eutrophication of water resources, increase pathogen ... However,

due to the number of workers not concentrated but dispersed into position so the

impacts can be mitigated, and easy to control, treate the problem.


- Subjects: Areas affected directly are residental areas where have employees

camps and the canal, natural stream beside these camps (camp locations can only be

138

determined after contractors sign construction contract with PMU and investor, so at

this stage can not determine exactly locations be influenced).

- The level of impact: SMALL and can recover.

3.1.2.3. The impact of solid waste

a. Domestic waste

Source

Domestic solid waste is generated domestic activities of workers such as

accommodation of workers, project staff, arranged in camps in the project area.

The composition of solid waste including: plastic bags, cardboard, food scraps,

parts of fruits and vegetables can not be used ..

According to the forecast for the duration of the construction project will

have an average of 100 workers, these workers are contributed 5 locations,

including: Intersection Dau Giay and Km3 + 400, + 100 Km 4, Km9 + 200, Km15

+ 100 and Bao Loc bypass.

The solid waste generated about 0.53 kg/ person/ day. Thus, the total amount

of domestic from the construction sites will be 53 kg/day/site. The composition of

this waste consists of biodegradable organic matter (eg food waste ...) and

persistent type (cans, nylon, paper) ..

Assessment

Domestic waste contain about 30% is organic material easily biodegradable

should normally decompose rapidly create unpleasant odors and attract flies and

mosquitoes ... So if they do not collect and handled appropriately, the amount of waste

can pollute the air by smell and toxic gases. On the other hand, if the waste dumped

directly into the project area may be result in pollution of surface water around the

construction sites: surface water in lakes, canals, rivers, stream,.... Also, this is a

favorable environment for harmful organisms to develope as: flies, mosquitoes,

insects and pathogenic microorganisms that can transmit disease to workers especially

in summer, when the diseases have a strong outbreak conditions ...

Besides, the waste disposal into project area can pollute of land in these areas,

negative impact on the health of resident area, aesthetic environment for the area. This

can easily conflict between workers and local communities. However, these effects

are entirely preventable through appropriate mitigation measures.


- Subjects affected: Workers and local resident.

- Level of impact: Small and recover.

b. Construction solid waste

139

Source

The solid waste generated construction activity mainly from waste soil as:

unsuitable soil, the surface, roadbed earthwork, pavement carpet ... These types of

waste will be stored within the site along the road and appropriate treatment, such as

for leveling following local authorities or disposal at the specified location after

reaching an agreement in writing with the local authorities.

Assessment

We calculate the amount of construction waste generated on the entire project

as follows

Table 3.22. The forecast the solid waste generated in the construction phase

Kind Volumn (m3)

Dau Giay viduct Bao Loc Bypass

Waste soil 14.337,6 2.591.582,1

Soil and asphal mixing 3.323,5 -

Soil and bentonite mixing 3.305 942

The solid waste generated construction activity mainly from waste soil as:

unsuitable soil, the surface, roadbed earthwork, pavement carpet ... it can cause

adverse effects environment such as:

- Causing of air pollution due to dust from the waste storage area;

- The restore and disposal are iligal cause problems spill caused spill by rains at

lowlands, adversely affect the aquatic ecosystem;

- The disposal area is not compaction and cover so soil will be eroded by rain

leading to formation of mud flows, stormwater runoff is not much suspended solids ...

this will cause negatively affect on land and water ecosystems.

- The impact on the landscape, population and traffic of the construction area

especially at Dau Giay intersections ;

- Polluting of surface water system due to solids waste spill out rainwater on the

surface area of construction waste storage.

Level of impact

- Object:

+ Dau Giay Intersection: Air quality, land scase, safety,

+ Bao Loc bypass; Air quality, surface water.

- Level of impact: midium and can not recover

3.1.2.4. Hazadous material and waste:

140

Source

- Hazadous waste:

+ Oil, grease and waste spillage during operation and maintenance of

construction equipment: During construction, machinery, equipment and vehicles

involved in the construction will be concentrated / maintenance at maintenance areas

at each construction site. Beside, this activity is the arrangement of the fuel supply

sector. These activities generate waste oil.

+ Solid waste containing oil (oil rags, paper wrap machinery oil etc.) arising

from construction equipment and maintenance positions at each site: This waste is

difficult to determine amount due depends on the number of machines and equipment

used by the contractor, type of machinery at construction sites and level, use a rag

needs differ between users as well as types of machinery .

+ The waste is derived chemical waste such as batteries, light bulbs burning ...

arising from camps at each site.

+ Asphalt spilled into construction activity of the road. These are qualities

difficult biodegradable so when given the environment we often have long lifetime.

On the other hand under the impact of external factors such as temperature, rainfall ...

We will form the hazardous substances to the ecosystem, such as PCBs, benzene,

grease .

- For hazardous materials: Source hazardous materials arising mainly from the

storage of oil and asphalt are not guaranteed, such as storage area without roof, the

tank collapsed, the container is placed directly on the ground.

Assessement

In the case of without measures to manage and handle the appropriate

provisions in accordance Circular No. 36/2015 / TT-BTNMT 30.06.2015 of the

Minister of Natural Resources and Environment on hazards waste management in the

construction area this make hazardous waste direct intrusions into the environment.

This may cause adverse environmental impact such as:

Waste oil and waste grease are toxic so will affect the quality of the

environment if not collected and processed.

From the calculation results show that the amount of oil discharged from the

regular maintenance area is huge. If they are not collected and handled thoroughly will

greatly impact the surrounding environment, adversely affecting the quality of soil and

water.

Lubricants are persistent organic pollutants biodegradable, insoluble in water so

when entering into the environment they will survive very long. They formed oil layer

141

prevents the respiration of organisms, poisoning organisms, particularly aquatic fauna

in the water in the aquaculture ponds, irrigation canals, rivers - natural spring.

Asphalt is the difficult nature biodegradable so when given the environment we

often have long lifetime. On the other hand under the impact of external factors such

as temperature, rainfall ... We will form the hazardous substances to the ecosystem,

such as PCBs, benzene, grease ....

The level and scope of impact

- The potential risks during the construction period (18 months) at positions

machinery gathering and storing oil, asphalt at intersections on Dau Giay and

bypassing cities Bao Loc.

- The level of impact: Medium and recovery.

B. Impact Assessment and forecast of the impacts of e source that is not

related to waste

3.1.2.5. Impact of noise and vibration

a. Noise arising from construction equipments

During the construction of overpass and the by-pass route, the machineries used

to serving the construction include: cranes, welding machines, trucks, bulldozers ... So

the construction process will causethe noise pollution. The level of noise generated in

the construction of each item of the project is based on the typical noise level of

construction equipments (table 3.23) and the formula for calculating the integrated noise

is:

L= 10lg

. In which: L the total noise level; Li the source noise i; n the total number of noise

sources.

Source: Pham Ngoc Dang 2003. The air environment. Science and Technology

Publishing House, 2003.

Table 3.23. The typical noise level of construction equipments (dBA)

Leveling and

compacting

Levelingmachine

8093

Roller 73 75

Asphalting

Asphalting machine

86 88

Trucks 83 94

Compacter 74 77

Soil excavation and

transportation

Bulldozer 80

Bucket excavator

72 93

Trucks 83 94

Máy nạo 80 93

Construction site

Crane 75 77

Welder 71 82

Concrete pump 81 84

Air compressor 74 87

Air pump equipment 81

98

Grader 80

Truck 83 94

Source: US Environmental Protection Committee. Noise from construction equipments and

n

i

Li.1,010

142

machinery NJID, 300.1, 31 – 12 – 1971.

Table 3.24 presents the results of calculation the noise level arising from the

construction of the overpass and road in the situations of the highest concentration of

vehicles and construction machinery in the same time.

Table 3.24. Results of calculation of noise at source in the construction phase

(dBA)

No Items The main used equipments Source noise

level

1 Overpass construction Cranes, welding machines,

concrete pump, concrete vibrator,

truck

86,1 94,7

2 Road construction (for the by-

pass route)

Bulldozers, excavators, grab,

spreader, roller, grader, truck

89,2 97,2

The level of noise decrease with distance was calculated by the formula:

L= 10 lg )()( 1

1

2 dBr

r a (applied to the line source)

In which:

L: the reduction of noise in the distance r2 compared to the noise source.

r1: distance of the sound characterized the noise source (r1 = 8 m).

a: factors including the impact of noise absorption of terrain (a = 0,1 – ground

grass).

source: Phạm Ngọc Đăng 2003. Environment air. Science and Technology Publishing

House 2003

Barrier layer of galvanized steel sheet with the height of 2.5 - 3m surrounding

the construction site that acts as a temporary noise barrier and can reduce about 12 ÷

20 dBA noise. The predicted results shows that the noise level decrease with the

distance outside the construction area, taking into account the effects of noise

reduction barriers, are presented in Table 3:25

Table 3.25. Assessment of noise decrease with distance

Items

Noise

sources

(dBA)

The level of noise decrease from the edge of the

construction area (dBA)

5m 10m 25m 50m 100m

Min Max Min Max Min Max Min Max Min Max Min Max

Overpass

construction 86,1 94,7 68,2 76,8 66,9 75,5 64,6 73,2 62,4 71,0 59,9 68,5

By-pass route

construction 89,2 97,2 71,3 79,3 70,0 78,0 67,7 75,7 65,5 73,5 63,0 71,0

143

Comparison of forecast results with the permissible limits according to QCVN26:

2010 / BTNMT, applicable to common areas - 70dBA, during the day time - the time of

construction, it was found that:

(1). For the construction of overpass:.

If using the devices with low sound emissions, in the process of building the overpass

and road, because of the barriers surrounding so the noise level should arise from the

construction activities in the construction site being about 1,3dBA times higher than

the allowable limit.

If using the devices with high sound emissions, the noise levels generated from

construction activities in most cases will be exceed the allowable limit from 5.2 ÷

8dBA and meeting the allowable limit at a distance of 100m from the edge of the

construction fence.

This assessment applies to the construction activities for the lower part of the

overpass. When construction of the higher parts, so the scope of construction

exceeds the height of the galvanized steel fence should grade the of noise pollution

level will be increased by approximately of 12dBA and the noise level will meets

the allowable limit at the distance of more than 100m.

(2). For the construction of the by-pass route of National road 20

In the the construction of the by-pass route, the residential areas are mainly

concentrated in the first two routes (far away from the routes of 20-30m), so the

impact of noise will be less than the above construction of overpass.

If using the devices with high sound emissions, the noise levels generated from

construction activities in most cases will be exceed the allowable limit from

3,3dBA.

If using the devices with low sound emissions, noise levels arising from the construction

activities are under allowable limit.

According to the formula for caculating the noise decrease over the range of trees, the

reduction of noise on the distance to the sensitive objects is presented in Table 3:26

Table 3.26. The level of noise decrease with distance to the sensitive objects

TT Objects / Location Distance

(m)(*)

Exceeding the limit allowed according to

QCVN 26/2010/BTNMT (dBA)

Min (6-21h) Max (6-21h)

1

The residential areas in the

National road of 20, 1A and the

provincial National road 769

5 - 10 5,2 15,8

2 The residential Anh Mai at Loc

Chau commune (Km0- Km1). 5 - 10 5,2 15,8

144

TT Objects / Location Distance

(m)(*)

Exceeding the limit allowed according to

QCVN 26/2010/BTNMT (dBA)

Min (6-21h) Max (6-21h)

3 The residential An Ninh at Loc

Chau commune (Km1- Km2). 5 - 10 5,2 15,8

4

The residential at National

Road 55 and Bao loc bypass

(Km9 +600).

10 - 20 4 14

5

The residential Nasari at Loc

Nga commune (Km15+100 -

Km15+300).

20 - 30 2,7 7,5

6 10 - 20 5,2 15,8

(*)The distance from the edge of the road

Based on the level of noise generated from construction activities and the

distance to the sensitive objects, it have identified the impact of noise in the object:

- It can see that all the objects surrounding the project area are affected by noise

pollution, in which the object of the residential area around the overpass will be

contaminated with noise level of more than 5 dBA to 15 dBA.

- The process of construction of the by-pass route, the noise pollution with higher

level, more than 3 dBA to 15 dBA.

Impact object and level:

Impact object:

The construction worker

The resident area souround project area

Dau Giay intersection area: Here the households, stores located near and along the National

Road 1 and far from construction area about 5 - 10m should be influenced by noise due to

construction activities.

Bao Loc bypass areas: Households living side route to avoid roadworks (the table 3:26)

bypass

Level of impact: medium and can nt recover

b). Vibration level generated from the construction equipments

In the process of construction of items, it will use the construction machines

such as excavators, bulldozers, trucks, rollers, ... .These devices will give a rise of the

vibration, the vibration level generated from the construction machines is calculated as

follows:

145

Table 3.27.Typical vibration level of some construction equipments (at

distance of 10m)

TT Type of used vehicles or equipments Reference vibration level (vertical, dB)

1 Excavator 80

2 Bulldozer 79

3 Vehicles transporting heavy goods 74

4 rollers 82

5 Air compressor 81

To predict the vibration decrease with distance, using the formula:

L = L0 – 10lg (r/r0) – 8,7a (r – r0) (dB)

In which: - L vibration is calculated by dB at a distance of "r" m to the source;

- L0 is vibration measured in dB at a distance "r0" meters from the

source. ation at a distance r0 = 10m is generally recognized as the

source vibration;

- a the internal coefficient of vibration for clay background around 0,5.

Forecast results are presented in Table 3.28.

Table 3.28. Vibration level decrease with the distance from the construction

equipments

No Equipments

Source

vibration

(r0=10m)

Vibration levels decrease with distance

r=12m r=14m r=16m r=18m

Laeq

(dB)

Lveq

(mm/s

)

Laeq

(dB)

Lveq

(mm/s

)

Laeq

(dB)

Lveq

(mm/s

)

Laeq

(dB)

Lveq

(mm/s

)

Laeq

(dB)

Lveq

(mm/s

)

1 Excavator 80 1,72 70,5 0,58 61,1 0,20 51,9 0,07 42,6 0,02

2 Bulldozer 79 1,53 69,5 0,51 60,1 0,17 50,9 0,06 41,6 0,02

3 Vehicles

transporting

heavy goods

74

0,86 64,5 0,29 55,1 0,10 45,9 0,03 36,6 0,01

4 Rollers 82 2,17 72,5 0,73 63,1 0,25 53,9 0,08 44,6 0,03

5

Air

compressor

81

1,93 71,5 0,65 62,1 0,22 52,9 0,08 43,6 0,03

QCVN 27:2010/BTNMT, allowable limit of 75dB from 6 21h and floor level from

21h 6h.

DIN 4150, 1970 (German Federal), 2mm/s: no damage; 5mm/s: flaking mortar;

10mm/s: capable of damaging the bearing details; 20 40mm/s: damage to the bearing

details.

Comparison of forecast results with the permissible limits according to

QCVN27: 2010/BTNMT found that, the greatest level of vibration arising from the

146

roller and reach the permissible limits when being out of the scope of construction in

the distance of 12 - 14m.

For the construction of overpass and bridge paths: Due to the distance from

residential areas, shops .... to position the existing overpass construction within about

10m, so the residential ares as well as other objects (within 10 meters from the area of

construction machinery) will be affected by the vibration generated during the

construction (vibration levels exceeds the permissible limits from 5-7dBA - for

vibrators and soil excavators), vibration generated can damage the works as cracking,

subsidence walls, roofs; large vibration levels also affect the health as well as daily

activities. These impacts require the precautions and mitigation measures.

For the construction of the by-pass route of National road 20: Because the shortest

distance from the sensitive objects to the project are rather high of 10 – 30m

(residential area) so these sensitive objects arounding the project area will be not

affected by the generated vibration or being affected in the low level.

Level of impact: MEDIUM and can not recover

3.1.2.6. Impacts on soil environment

a. Sources of impact

During the construction process, especially at Bao Loc bypass route, the soil

will be affected by construction activities such as roadbed earthwork, slope levelling,

movement of construction equipment, the waste arising from construction, etc,..

Besides, these pollutants will cause a certain impact on soil environment.

b. Impact assessment

b1. Loss of productive assets: During the construction process of Bao Loc

bypass route, there is about 169,708 m2 of land that will be occupied because of new

route, which is mainly agricultural land. Construction work will result in the removal

of 3,712,270 million m3 soil. Since this is purely basalt soil, the amount of removed

land are located on floors of cultivated soil, suitable for industrial crops such as tea,

coffee,... The removal of topsoil will lead to a complete loss of productivity of land.

Besides, the machinery and construction equipment has great weight to move

along the route will lead to soil compaction and structure is destroyed, finally, the soil

productivity will be lost.

b2. Soil erosiont: Currently, the land occupied by Bao Loc bypass route mainly

is agricultural land, where locals perform intercropping measures between coffee, tea

and fruit trees on above canopy; the under canopy is covered by layers of shrubs or

weeds. This leads to the reduction of soil erosion by rain and surface rainwater runoff.

But when the project goes into construction, earthworks leading to the loss of vegetation

and soil structural break, which increases soil erosion. According to the calculation

147

results, the amount of excavated soil and ground cover is 3,712,270 m3. If the estimated

0.2% ofsoil excavation and embankment are transformed into solids back by erosion, the

total amount of land will be lost at about 7,424 m3. This will cause the integration

impact on surface water quality, fauna and aquatic plants, causing buried land area for

agricultural production in the lower (right line from Ho Chi Minh City to Da Lat).

b3. The risk of soil contamination by waste: During the construction process,

soil can be polluted by oil spills or leakage from the maintenance of machinery and

equipment demolition, transportation; grease and oil storing,... When it enters soil,

grease will cause great destruction impact to animal and soil microorganisms. Due to

the difficult permeability and virtually indestructible, grease prevent animal

respiration, reduce the ability of plants absorb nutrients. Oil contaminated soil will

make plants grow poorly, soil microorganisms are destroyed inability to resolve

organic matter into digestible nutrients for plants.

c.Location and level of impact

- The impacts on soil environment mainly takes place on the Bao Loc bypass

route, especially on the section from Km9 to Km14 where route goes through the

terrain is heavily dissected by valleys and hills.

- Level of impact: Large and can not recover.

3.1.2.7. Potential risk to groundwater impacts

a. Source

In the project construction process, there are two different additional categories

so, that lead to groundwater impacts are different respectively at each location, as

follows:

- For Dau Giay overpass construction: steel sheet pile driving activity and the

construction of bored pile for bridge and piers at high risk affect regional groundwater

quality.

- For the construction of Bao Loc bypass: The cutting natural slopes to the new

route will cause certain effects to mirror the current state of the project area

groundwater.

b. Assessment

b1. Underground water contamination from bored file construction:

In the project area Dau Giay overpass construction, groundwater quality good

for use for daily life at depths from 8 - 15 meters, the construction of bored file take

place here, the depth of the bored pile is 43m). Therefore, the underground water

quality will be affected by construction activities, because:

148

+ Groundwater contamination by overflow water from the surface down the

process of steel sheet pile wall to stabilize the soil during the construction.

+ Groundwater contamination risk by bentonite solution during pile drilling.

+ Waster water on the ground site can spill to bored pile during concereting.

+ Waste water spill from the concrete pouring process will follow the

capillaries, the risk of groundwater contamination of water sources.

- The risk of groundwater contamination during construction by steel pile

In the preparing the foundation construction abutment or piers, the construction

area will be fixed by the steel pile diving. This process potentially contaminated

surface water into underground overflow through empty slots keep steel pile and soil.

Waste water can carry contaminants such as grease, microorganisms or heavy metals

contamination leading to groundwater. Especially, if the acidic surface water is

penetration will lead to the promotion of mobility of heavy metals in the soil of this

potential risk of negative impacts on people's health. So when steel pile diving should

not be constructed rainy season or standing water in the surrounding area.

-The risk of groundwater contamination by bentonite

When water retention through the floor, a part of bored pile with bentonite

containing in the water complex. Bentonite can containing poison in the surface water

additives with potentially toxic water will seep into this complex and bring toxic

penetration underground water and soil . The number of bored pile is very large, so the

risk of contamination is widespread. This pollution will extend during bored pile

construction process. Bentonite existing time in the bored pile if longer more and more

groundwater contamination.

- The risk of groundwater contamination from dirty surface water overflow into the wall

during construction drilling pile

The purpose of using the casing is geological layers protection to avoid collapsed

during construction activities at the top. The diameter of the casing will be larger

diameter drill holes from 5 to10cm. The length of casing will be about 5m to 7m. During

bored pile construction, dirty surface water will overflow under siege in gaps between

the casing and the hole drilled to depth. This will pollute ground water.

- The risk of groundwater contamination caused by water seeping from the pile

concreting

When concrete pour down bored piles, the dirty water spill out from this bored

pile with high pH. So, this dirty water will penetrate in the soil to impact on soil quality

and underground water at bridge construction area.

Through the above analysis shows, the construction of the bored pile in the

149

ground water exploitation layers will contaminate water source, the dirt will follow

cracks in the walls of the casing, penetrate and contaminate water sources.

b2. Changing the status of groundwater mirror: Bao Loc bypass is city's new route

follows the eastern slopes and southeast of the city, this is capital flow of groundwater

and surface water flow. The construction activity requires benching excavated lower

level shock slope and slope stability for the route, which will change mirror of natural

groundwater at project area. The main effects of this impact mainly change water

level, especially in the dry season this will cause a negative impact on to the plant

cover.

c. The scope and level of impact

- The impact on groundwater quality by construction activities take place at Dau

Giay intersections and the changing status of groundwater mirrors will occur along

the Bao Loc bypass.

- The level of impact: Small and irreversible.

3.1.2.8. Construction activities supporting items

Activity of construction site layout

a. Source of impacts

Occupancy of roadways

The project will arrange the construction sites (which are surrounding by

galvanized steel sheet fence with the heightof 2.5 - 3m) in the area of National road 1A

and National road 20. The construction of the project will be appropriated to the existing

one-way layout of machinery, vehicles serving items of construction projects.


b1. The impact to the surrounding landscape and obscured vision in the area - factor

has to be considered

The appearance of the galvanized steel sheet fence with the heightof 2.5 - 3m will

affect the vision between the two road axes of the people arounding and the traffic

participants. So it will affect the business operations of businesses, stores in both sides

of the National road 1A and 20 because the pedestrians are not visible from the opposite

side will lead to reduce of customers and prejudice to sales of these stores. However,

this galvanized steel sheet fence has a great effect in reducing the dust emissions to

outside the scope of the construction site and reducingthe noise level from the

construction activities within the construction site, and prevent status of encroachment

the corridor of the construction means that will cause the transport congestion.

Through the comparison of the affecting on the vision and the beneficial effects

of the galvanized steel sheet fence installation, that will be highly effective in

preventing the risk of polluting the environment. Besides, in case absence of the fence,

150

the landscape and environment in the project region will deteriorate changes, and the

vision in the construction area will be limited due to the high amount of dust and other

large equipments obstructing the traffic.

Thus, the installation of galvanized steel sheet fence within the scope of

construction will bring many positive effects, there are environmental benefits than the

risks affecting of vision.

b2. Obstruction and traffic jams - Impact require mitigation measures

The traffic flow on the National road of 1A and 2: Currently, the route in the

Project area, the traffic on the route is very large and there are traffic jams on the peak

hours. The layout of the construction sites on the route will occupy a part of the traffic

road in the current path. The site layout is still affecting the circulation of the daily

means (truck parts, car, bus and motorcycle vehicles, motorized vehicles - especially

during peak hours in the position crossings).

c. Scope and level of impact

- Scope of impact: These impacts will mainly happen at Dau Giay intersection.

- Level of impact: medium and can recover

Activity of storage materials

a. Source

a1. Relating to waste - no significant impact

Activity of storage material generated dust: Volume storage of materials servingfor

excavation operation in the project area (including the volume of excavation and

embankment in all categories including overpass construction, construction of by-pass

route); these amount of material is stored in the form of small groups will give a rise of

dust. However, due to the amount of material focuses primarily within the construction

site at the two bridgehead areas and is separated from the surrounding fence with 2.5 ÷ 3

m of galvanized steel sheets sothe dust arising from temporary storage will be very small

concentrations and no significant impact to the surrounding environment

For the amount of material from the construction of by-pass route, the dust

emission from the material storage will affect directly to the object of residential areas

surrounding the Loc Chau and Loc Nga communes, .. (local people, activities of socio

- economic). However, if applying the appropriate measures, the dust emission can be

minimized.

a2. No relating to waste

Erosion due to rain: While the excavation, if the weather is not favorable to

rain (especially in the rainy months) it will happen to runoff some volume of

151

excavated soil.

Stormwater runoff: The project will arrange the construction sites to serve the

construction categories of project. The project will arrange a warehouse to store the

materials, petroleum, machinery, worker’s camps. The base of this warehouse will be

high to avoid the flooding.

During the project construction, if the weather rain , especially if there is heavy

rain, then rainwater will concentrate in the areas of construction. Rainwater flows through

the yard materials, concrete mixing plant, motorcycle rally point, worker camps, will

contain various impurities such as oil, organic matter, solids, heavy metals and suspended

matter.


Risk of rain on the surface area of the worsening environmental landscape and affect

traffic surrounding.

The amount of soil being washed away by the rain is not much, but without the

unreasonable measures to prevent, the sediment will be very easy to spread to the

around area (houses, roads, living area, ...) will cause the swamps, adversely affecting

the environment and landscape, obstructing the community activities as well as the

safety of vehicles in traffic flow. Potential impacts during rainy time, focusing primarily

in the area of the pier construction. Besides, if sediment in the dry days, it will cause the

dust for the transportation participants as well as affecting the residents near the project

area.

Stormwater runoff contains various impurities such as oil, organic matter,

solids, heavy metals and suspended solids ... so when water flows over the surface of

the contamination (flooding, dirty ....) in the two side areas, it will affect the

environment, making it difficult to go and work, directly affect the economic and

social activities (trade, business, ...) from households, businesses, industrial units

which are close to the project area. The impact requiresthe mitigation measures.

c. Level of impact: Medium and can recover

Operation of maintenance the equipments

a. Source

The operation of maintenance of construction equipments will generate

hazardous waste (waste oil, oil rags and waste water containing oil). Details are

presented in Table 3:29.

Table 3.29. Hazardous waste generated during the construction phase

No Activities Type of waste Need to be

152

Type components Location Period of

time

treated

1 Changing

oil.

Waste oil, oil

rags.

Sludge oils Construction

site (limited

in scope

fence)

12 months

Circular 12:

2011 / TT-

BTNMT.

2 Maintenance

of

equipments.

waste water

containing

oil.

Oil

concentration

of 3 mg / l.

Changing oil and the operations of maintenance of construction equipments will

create waste oil - Hazardous wastes that can pollute the environment seriously.


The types of hazardous waste will be limited in the construction site, but the

hazardous waste (with oil) without the radically collection can also spill out on the

street at the entrance of the consstruction site. Because the road has been concreted so

it should not happen pollution by oil, but due to high viscosity, waste water containing

oil will hasthe potential slip accidents for construction equipments in the the entrance

of the construction site.

All types of hazardous waste generated at construction sites are required to

handle according to the Circular No.36: 2015/TT-BTNMT dated 30.06.2015 on

hazardous waste management.

Level of impact: SMALL and can recover

3.1.2.9. Impact on economical and social during construction period.

a. Source

During the construction period, the sources of the economic-social

impactincluding:

+ Construction activity disrupted commercial activities in the local residentat

Dau Giay intersection.

+ Construction workers from other areas will impact on the state of regional

society.

+ The public utinityis damaged by the material transportation.

b. Assessment

b1. Impact on business service

At Dau Giay intersection area, the business activity of the local resident are

resulting vibrant place and diversity, including: Restaurant, motorcycle business,

petroleum trading, services motels, catering services. .. When the project is

implemented, the construction activity will obstruct business. On the other hand, the

153

construction activities will generate dust and noise, this will affect the income of local

resident due to no more buyers. The impact will be discussed in detail in the

socialassess report..

b2. The risk of spreading infectious diseases - Request to be precautions

The workers are come from other provinces, they live in the camps, where the

poor sanitary conditions as waste water is not treated, the dometic waste discgarge

direct on the ground site. These will lead to a diseases such as dengue fever, eye

disease ... to the workers; This disease has the ability to spread and affect the workers

and surrounding population as: HIV, hepatitis B, hepatitis C…

Besides the contagious disease, in workers' camps are often environmental

hygiene conditions are not good, with that diet is not good to ensure the workers heath

so this will increased risk of related diseases to parasites such as worms, plague ....

b3. The risk of loss of security - Request to be precautions

In the project area, the economic - society activities (business, services and

trade ...) take place with a large number of employees (mainly the workers at the plant

, production facilities, business) which are coming from many places.

The concentrating of 100 workers at the peak times of the constructionwill lead

to the problem of housing, living, dining for the first time can disturb the regional

security because the workers are often the from other areas and they should not be

familiar with the local lifestyle. On the other hand, the conflicts can arise between the

workers due to the differences in their lifestyle. To ensure the security in the local

place - where the construction of project is a very strict requirement. Required to have

the precautions and mitigation measures.

b4. Increase employment opportunities and income

Besides the negative impact on the economy - society, some of the positive

effects the projects being implemented include:

+ The concentration of workers for construction activities will increase the

demand for quality, food and local entertainment, these activities will contribute

promoting trade and service development, these services create jobs and increase

income for local resident.

+ Create employment opportunities for local workers and restructuring of local

labor. Depending on local workers capabilities, they will be recruited to work in the

construction sites.

b5. The risk of damage to utinity - Request to be precautions

154

At Dau Giay construction activities and material transportation will damage utinity

as:.

+ At Dau Giay intersection viduct: The axcavated for viduct and approach

roadway will obstruct resident’s traveling at project area. The construction activities

of drainage system without cover have potential accident for resident, this is also

difficult for resident to travel on exist road.

+ At Bao Loc bypass: During construction this road, the project need to

move large volumn material and waste soil, while the exist road have mainly low

level urban road. Transportation with heavy trucks will damage these roads, these

are difficult for travelling of resident.

c. Scope and level of impacts.

- Scope of impact on economic and sociaty:

+ At Dau Giay intersection: construction activities impact on productions and

business and social economical activities by forcus workers:

+ At Bao Loc bypass: construction activities impact on sociay and economic by

forcus workers:

- Level of impact: Small and can recover

3.1.2.10. Impact on traffic by contruction activities:

a. Source

The construction activities will obstruct traffic as:

- Excavated embankment for Bao Loc bypass;

- Dau Giay intersection and approach roadway;

- Completing the pavement;

- Drainage system construction at Dau Giay intersection;

- Material store;

- Meterial transportation.

b. Assessment

At Dau Giay intersecton

- Impact on traffic by construction activities:

Dau Giay intersection is the gateway to Ho Chi Minh City so the traffic

capacitycross here every day is so big. Construction activity expanding intersections and

Dau Giay viduct will occupy a part of existing roadway, which will obstruct traffic, this

cause traffic jam and accidences. Besides, the excavation can also cause spills soil, mud

155

on the public road which obstructand endanger tovehicle and traffic participants.

Especially this is unsafety when the rainy day.

Besides the construction of Dau Giay intersection viduct, the project also

renovate and expand of National Road 1 and National Road 20. This is the existing road,

so construction activities include: construction equipment and material gathering ,

construction of road base and pavement ... These will obstruct traffic operations. This

will also increase traffic jame if traffic control is not done well, and the personal moto

on the road that is not complete without asphalt will increase unsafety traffic, this risk

will increase when rainy season.

The moving construction machines out of large sizes, high frequency during the

construction period this will increase the risk of traffic accidents. Along with that, in the

bridge superstructure construction will fall material onto road existing to cause danger to

traffic participants.

- Impact on traffic by material transportation

To support material for construction activities at Dau giay Intersection viduct,

they will be moved by trucks at QL1, QL20 section Km0 – Km20 and ĐT769. These

activities will increase the traffic on these roads. On other hand, the heavy trucks are

large size and capacity so this will increase traffic accidence at resident area souround

project area. Besides, the transportation can also cause spills soil, mud on the public

road which obstructand endanger tovehicle and traffic participants. Especially this is

unsafety for personal motobike.

- Impact on travelling and life of resident area beside Dau giay Intersection

area.

Through supervisor experience show excavation activities of embankment,

drainage system along resident area obstruct travelling of them. The drainage

system without covers will cause danger by accidence to impact on their heath.

Bao Loc bypass

- Construction activities impact on traffic and increasing resident community:

At Bao Loc bypass is a new tour with many contour intersections at some

locations: The start point Bao Loc bypass with QL20 intersection (Km Km113+727

and Km128+800 at QL20), QL20 and QL55 intersection (Km9+600 at QL20 bypass

QL20); bypass and Ngô road intersection at (Km0+900), Tô Hiến Thành road

(Km3+200), Trần Quang Khải road (Km11+700), Âu Cơ road (Km12+750), Nguyễn

Huy Tưởng road (Km14+950)... Excavation of embankment construction and

moving plant cover will obstruct travelling of resident area. Besides, the heavy truck

to transport equipments have potential risks unsafety if they are not good at control.

- Impact on traffic by material transportation:

156

Material transportations spill out road and store area near road also unsafety as:

the sand, rock, gravel loss of adhesion with the road wheels will cause loss of steering

and accidents, especially for motobikes. Material transportation will increase volume

heavy vehicle on QL20 running along Bao Loc city, QL55 and some urban routes of

Bao Loc city... This increases the risk of traffic accidents on the material transportation

road where is high density population.

c. Scope and level of impact

- Impact on traffic is medium level;

- The sensitive area is impacted including:

+ QL1, QL20, ĐT769 area and Dau giay intersection.

+ QL20 Bao Loc city section and urban road in Bao Loc city as: Huy Can,

Xuan Dieu, Ngo Tat To, To Hien Thanh, Nguyen Tuan, 1 thang 5, Hoai Thanh, Tran

Quang Khai and Nguyen Huy Tuong.

3.1.2.11. Impact on ecology system

a. Source

Impact on ecology system will happen mainly at Bao Loc bypass construction.

These come from levelling, excavated for embankment construction activities ... These

activities generate dust on the leaf of tree, it is not good for ecology system along the

route. On other hand, the rainfall oveflow to increase erosion, land slide effect

nagative on ecology system and the aquatic ecosystem in the lowlands

b. Assessement

Terrestrial ecosystems

- Loss of agricultural land and cropping systems: In this phase, the

construction activities as: Setting coatings, leveling the land implementation will

occupy mainly agricultural land. This disrupts the cropping systems that exist in the

agricultural ecosystem.

- Spill and soil erosion will cover agricultural ecosystems: In addition, the

ecology system such as tea, coffee, fruit, vegetables ... in the slope (the right of

bypass along Dau Giay - Da Lat direction) when construction cause erosion

burying ground, which in addition to the negative impact on agricultural

production.

- The dust generated from construction and transportationaffect agricultural

crops: Dust generated from the construction process will bind on the leaves of the

tree looks like: Tea, coffee, fruit trees ..this will reduce photosynthesis of trees and

reduced crop yields. Especially, when the crops is reduced when construction

157

activity implement when the coffee tree is the period of flowering, if under the

influence of dust will cause yield loss. These effects can fully overcome if the full

application of mitigation measures during construction.

Underwater ecosystem:

During the construction phase, sources affecting on aquatic ecosystem is the

largest assessment of mud, grease and rainfall on the ground site when going into

ponds has made increased turbidity, total suspended solids is high. The impact will

affect on the photosynthesis abilityof aquatic plants, causing buried animalsbottom,

reducing the level of dissolved oxygen in the water .. and adverse effect on aquatic

life.

Domestic waste spillage, construction waste and hazardous waste from

construction sites into surface water systems (small flow, the natural streams at bridges

and culverts on the route) these create riskspollutants and affect on water and aquatic

species.

Discharge of waste water from domestic and contruction activities that

untreated from camps , concrete mixing plant and the fuel storage area will pollute the

water resource and they also increase pollution and nursing at surface water in the area

c. Scop and level of impact

- Scop of impact:

+ Terrestrial ecosystems: along th Bao Loc bypass

+ Aquatic ecology system:

Natural water slots at: Km1+068; Km1+313,8; Km1+582,16;

Km2+750; Km3+150; Km3+297; Km3+297 - Km3+934,95;

Km4+634,5; Km6+900; Km7+179 - Km7+772; Km8+094,36;

Km9+254; Km9+909,39; Km10+438,82; Km12+142, 5; Km13+875,5;

Km14+782,15;

Exissting streams: Km2+154,76; Km4+838,95; Km5+881,3;

Km6+378,36; Km8+500; Km11+165,59 (at Minh Rong II – Dabrim

stream); Km12+285,77; Km13+241,63;

Dai Binh river (at Km0 - Km11) and Dai Nga river (Km11 -

Km15+363,17) where recieved flow branchs

Impact on water quality at Suoi Tre tourist park, Loc Son ward (Km

9+200)

158

Agriculture ecology system with coffee and

durian mixing tree.

Agriculture ecology system with tea and wood

mixing tree.

The bypass cross the nature stream The garden of vegetable

Figure 3.1: Some ecology system is impacted by construction activities

- Level of impact: medium and can recover

3.1.2.12. Assessment and predict impact on public heath

a. Source

During construction period, the impacts on workers and local resident area will

have risks. These heath problems including:

Table 3.30. Heath problems during construction period

Construction

activities

Public heath

problems/infectious

diseases

Health issues,

community /

infectious

Accidence Psychological

Issues

Bridge Infectious diseases The respiratory illness - Increased Stress,

159

construction caused by pollution,

poor sanitation,

such as cholera,

typhoid, malaria ...

caused by dust and

emissions;

- The health problems

affected by noise;


caused by vibration.

accidents and

injuries related to

traffic;

- Increased

accidents and

injuries related to

labor

anxiety

Material

Transportation

- The respiratory illness

caused by dust and

emissions;


affected by noise;

- Increased

accidents and

injuries related to

traffic;

Stress,

anxiety

Forcus

workers

Rise to infectious

diseases such as:

HIV; Hepatitis B,

C; fever..

Risks arising parasitic

diseases, malnutrition,

poor hygiene

conditions

Increase the risk

of conflict with

local

communities

Stress,

anxiety

b. Assessment

Impact on resident‘s heath during construction period:

b1. For the health effects of air pollution:

As noted in Section 3.1.2.1 assessment, air quality is polluted in the project area

including Dau Giay intersection, Bao Loc bypass, asphalt plant, transportation routes

at risk umbrella ... by dust and NO2. Health problems related to them, including:

+ Dust greater than 10 micron size can expose to the eye to increase risk of

hurting the eyes, cause infections, allergies. For dust is smaller than 5μm can penetrate

into the lungs causing respiratory diseases such as asthma, pneumonia, if long-term

exposure to dust deposition and accumulation caused pulmonary fibrosis.

+ NO2 enter the lungs through the respiratory tract and mucous membranes

absorb more of the lung. About 80% - 90% NO2 can be absorbed, although this

changed in the nose and breathing which results in respiratory allergies. If exposure to

NO2 in large doses and for a long time leads to increased risk of pneumonia.

b2. Impact on heath by noise:

According to previous assessments, the object is the residential area around the

overpass Dau Giay section will be contaminated with noise levels from 5-15 dBA and

from 3 - 15dbA for residential areas along the Bao Loc bypass.

Noise is a factor greater impact on human health. The harmful effects of noise is

160

causing damage to parts of the human body. Firstly auditory directly affected by noise

this reduces the sensitivity of the ear, hearing decline, causing occupational deafness. In

addition, noise induced headaches, tinnitus, dizziness, nausea, neurological disorders,

cardiovascular disorders and diseases of the digestive system.

Particularly for construction workers, during their work they were exposed to

continuous noise will lead to workers feeling tired, hearing loss, distraction in the labor

and can cause occupational accidents.

b3.The problem of accidents and injuries:

- The accidents and injuries in the construction process: During the construction

project, the cause of accidents and injuries are potentially happen. The cause of this

problem may be from trucks, slip and fall down on the scaffolding, electrical

accidents, accidents fallingor collapsed structure ... On rainy days the risk of

occupational accidents increasing high due to slippery ground, prone to electrical

problems ... the risk of accidents lead to death or permanent disability.

- Traffic accidents and injuries in the construction process: In Dau Giay

intersection viduct and Bao Loc bypassing construction always potential unsafety

traffic construction activities and material transportation. Vulnerabilities accidents and

injuries are often workers on construction sites

3.1.3. Assessing the impact in the operational phase of the project

A. Assessing the resource of impact related to waste in the operation phase

3.1.3.1. Impact on air quality

a). Source:

The predicted load of pollutants in the atmosphere from the fossil fuel combustion of

vehicles on the road is done on the basis of:

+ National road 1A: According to the predicted results of the expansion

National road 1A project in section Phan Thiet - Dong Nai, the flow of vehicles

through the area now has a huge, around 19827 - 32388 PCU / day. According to the

scenarios studied in the project renovating the roadbed sections of Phan Thiet - Dong

Nai, the traffic flow is allocated as follows :

Table 3.31. Predict the traffic capacity at Dau Giay to 2025

Traffic

flow

National

road 1A

(Phan

Thiết -

Đồng Nai)

Expressway

Dau Giay -

Phan Thiết

National

road 1A

(Phan

Thiết -

Đồng Nai)

Expressway

Dau Giay -

Phan Thiết

National

road 1A

(Phan

Thiết -

Đồng Nai)

Expressway

Dau Giay -

Phan Thiết

scenarios Plan 1 Plan 2 Plan 3

161

40% 60% 30% 70% 20% 80%

Year

2025

19.827 -

32.388

29.741 -

48.582

14.871 -

24.291

34.698 -

56.679

9.914 -

16.194

39.655 -

64.776

+ According to the calculations of investment projects rehabilitation of National

road 20, section Km0 - Km123 + 105.17 and consider the formation National road and

vehicle traffic for transporting bauxite, are summarized as follows :

Table 3.31. Predict the traffic capacity at QL20 to 2025

Senarios Bycycle Bike Car

2 axle

trucks

and

buses

less

than 25

seats

3 axle

trucks

and big

buses

Trailer

Total of

vehicle

(vehicle

/ day

and

night)

exchanged

vehicle

(PCU/ day

and night)

2020 814 9671 899 4976 899 0 17259 16161

2030 1459 17319 1609 8911 1609 0 30908 28942

Assessment:

To assess the level of impact of traffic capacity to the air quality, we use methods of

pollution coefficient of Euro 3 emission standards for motorcycles - motorcycles and Euro 4

for cars follow Decision No. 49/2011 / QD-TTg dated 01 May 09, 2011 by the Prime Minister

on the prescribed schedule applicable emission standards for cars, motorized two-wheeler

production, installation assembly and new import, as follows:

Table 3.33. Coefficient of air pollution caused by vehicles according to

Euro standard

Type of vehicle Engine CO

(g/km)

HC

(g/km)

NOx

(g/km)

PM

(g/km)

Euro 3 standard for motobike

Moto bike <150 cc 2 0,8 0,15 -

> 150cc 2 0,3 0,15 -

Euro 4 standard

Car Diesel 0,5 - 0,5 0,025

gasoline 1 0,1 0,08

- Small trucks,

<1305 kg

Diesel 0,5 - 0,25 0,025

gasoline 1 0,1 0,08 -

Small trucks

1305 - 1760kg

Diesel 0,63 - 0,33 0,04

gasoline 1,81 0,13 0,1 -

Small trucks Diesel 0,74 - 0,39 0,06

162

1760 - 3500kg gasoline 2,27 0,16 0,11 -

Large trucks, diesel engines 2,76 0,41 3,5 0,02

Source: European union

Perform forecast air pollution levels on the National Road 1 under option 1 (40%

driving on National Road 1 and 60% on the Dau Giay - Phan Thiet section) and on

QL20 in rush hour traffic with cars accounting for 40% of all day (peak hours

range from 6 pm-8 am and 16h - 20h pm). Results emission projections are

presented in the table 3.34 below

Table 3.34. Emissions from cars in 2025 forecast in peak hour (mg/m.s)

Location Unit CO HC NOx PM

On National road 1A

mg/m.s

92,663 8,729 28,773 0,291

On National road 20 17,453 2,173 1,813 0,087

QL20 bypass (60% vehicle volumn go along

bypass) 10,472 1,304 1,088 0,052

Sutton model applied to the line source has been used to predict the dispersal

of pollutants from vehicles. Equation was calculated for continuous emissions sources

and infinite length (when x ) has the form:

u.

2

hzexp

2

hzexp.E8,0

Cz

2

z

2

2

z

2

(mg/m3)

In which:

C: concentration of pollutants in the air (mg/m3);

E: load of pollutants from waste source (mg/m.s);

z: the height of the calculated point (m); h: the height of the roadbed compared to

around ground (m);

u: Average wind speed (m/s); z: diffusion coefficient of pollutants under the z (m).

Diffusion coefficient values of pollutants z in vertical (z) the stability of the

atmosphere in the project area is B, is determined by the formula:

z = 0,53.x0,73 (m)

Where: x is the distance of the calculated point compared to the source of emissions,

with the downwind, m

Automatic programming z (m) according to the distance xi (m) and

atmospheric stability of class B, programming language of C++. Factors to calculate

and forecast are the TSP, CO, NO2, SO2 and HC. etailed forecast results are presented

163

in Table 3:35.

Table 3.35. The forecast distribution of concentrations of air pollution in the

operational phase

Sections Distant CO HC NOx PM

m (mg/m3)

QL1A Dau Giay

section, 2025

5 54,557 5,139 16,941 0,171

10 22,986 2,165 7,138 0,072

25 10,373 0,977 3,221 0,033

50 6,026 0,568 1,871 0,019

QL20, 2020

5 10,276 1,279 1,067 0,051

10 4,329 0,539 0,450 0,022

25 1,954 0,243 0,203 0,010

50 1,135 0,141 0,118 0,006

Bao Loc Bypass –

2020

5 6,166 0,768 0,641 0,031

10 2,598 0,323 0,270 0,013

25 1,172 0,146 0,122 0,006

50 0,681 0,085 0,071 0,003

QCVN 05:2013/BTNMT

(TB 1h) 30 0,2 (*) -

QCVN 06:2009/BTNMT

(TB 1h) - 5 - -

Notes: (*) Limited value of NO2 in ambient air

In comparingthe predicted results with the permissible limits in QCVN05: 2013

/ BTNMT and QCVN06: 2009 / BTNMT, it can see that by 2020

At QL1A, Dau Giay intersection, 2015 the CO and HC content in ambient air

higher than limited value at distant <5m. And NO2 content same lilited value at >50m

(review proportion NO2/NOx = 0,13 theo Ralf Kurtenbach và Colueges, 2012).

At QL20 and Bao Loc bypass: The results of forecast indicates of 2020 are the

concentration of polluting gases and particulate matter are lower than the limited value

according to the National Technical Regulations

3.1.3.2.Impact on surface water by rainfall overflow

a. Source

- The road operate will be happen processes such a:s corrosion and degradation

of asphalt concrete, abrasion of the tires, oil leakage or deposition of metal from the

atmosphere has led to the adverse impacts on surface water quality such as heavy

metals, mineral oil ... According to Clark and his colleagues studied the chemical

properties of soil and dirt on the pavement showed: Heavy metal content in dirt on the

164

pavement dependent on traffic and proportional to the density of traffic. Table 3:36

presents the results of research on chemical concentrations in soil and dirt on the road

Table 3.36. Chemical chearacteric of dirty layer on the road

TT Parameters Content (mg/ kg) TT Parameters Content (mg/ kg)

1 pH 6,7 – 7,6 7 Cr 2 - 35

2 Oil 5 - 73 8 Cu 24 - 310

3 Clo 0,1 - 4 9 Fe 24 - 65

4 NO2- 3 - 386 10 Pb 19 - 553

5 SO42- 3 4 - 2 70 0 11 N i 2 - 73

6 C d 1.3 (everage) 12 Zn 90 - 577

Source: Clark and colleagues , 2000. Chemical chearacteric of dirty layer on the road.

Magazine CIWEM.

- Stormwater flowing over the bridge and path will carry the contaminants on

the surface of the road to the surrounding area.

- Appeared new route through the area Bao Loc will lead to increased levels of

soil erosion on the slope, the product of erosion brought down natural water bodies

along the Bao Loc byppass.

b. Impact assessment:

- The calculation results in environmental and reality shows: the amount of dirt

accumulated on the pavement dry weather will reach equilibrium after 10 days. After

10 days, the rate of deposition is similar to movement speed caused by the turbulence

of the air. The balance is maintained until the phenomenon appears "clean". This

phenomenon has been identified as the wind is blowing at a speed exceeding 5,8m / s

or rain with amounts exceeding 7mm / hour. This precipitation rapidly clean the dirt

on the road. After 20-30 minutes, the concentration of contaminants in the runoff,

meanwhile is negligible. Due to effects that occur during long periods and accumulate,

water quality, sediment along rivers and streams are at risk of contamination.

- The products from the erosion process of under rainwater runoff into natural

water bodies will increase in turbidity, suspended solids degrade water quality and

affect aquatic life.

165

Figure 3.2. Impact Assessment of the surface water runoff in the operational phase

c. Objects and level of impact

- Main objects affected include: Surface water quality, aquatic animals, aquatic

plants;

- Location is affected: The impact of stormwater runoff presence across bypass,

including the natural flow of the project areas where receive rain water runoff what

contains too many products soil erosion, such as:

+ Natural water slots at: Km1+068; Km1+313,8; Km1+582,16; Km2+750;

Km3+150; Km3+297; Km3+297 - Km3+934,95; Km4+634,5; Km6+900; Km7+179 -

Km7+772; Km8+094,36; Km9+254; Km9+909,39; Km10+438,82; Km12+142, 5;

Km13+875,5; Km14+782,15;

+ Exissting stream: Km2+154,76; Km4+838,95; Km5+881,3; Km6+378,36;

Km8+500; Km11+165,59 (vị trí cầu Minh Rồng 2 - suối Dabrin); Km12+285,77;

Km13+241,63;

+ Dai Binh river (Km0 - Km11) and Dai Nga river (Km11 - Km15+363,17) where

receive rain water runoff of branch stream.

- Level of impact: Medium

B. Assessing the impact of sources of impacts not related to waste in the operation

phase

3.1.3.3. Noise pollution - no significant impact

a). Noise

Helth/Economic Deverlopment

Biological productivity

Quality HST

Pb, Ni Cao su, Zn, Cd, Pb,

PCBs Oil Ni, Oil

Dust Wheel Spill Degenerate

Vehicle Asphalt paverment

Impact humanities

Impact

on

ecology

Physic Chemical

Effect

Operation

166

To predict fairly accurately the noise level caused by transport in the operation

phase of the project in 2020 and 2025 to the two route areas, Environmental

Consulting unit using software ASJ RTN-Model 2003 (Introduction to Noise and

Traffic Noise Prediction), Japan.

The formula for predicting the noise source:

In which: a: Noise (for cars, a = 82,3)

: Distant from centerline to sensitive point

N: Number of vehicle, CPU

T: Time (as in seconds)

Table 3.37. The average equivalent noise level by traffic on the road to 2020 to

2025 as distances

Locations Distance (m)

5 10 20 30 50 100

QL1 (Avarage

vehicle capacity as

plan 1) – 2025

72,7 69,7 66,6 64,9 62,7 59,7

At QL20 – 2020 71,8 68,8 68,8 65,8 61,8 58,8

On bypass QL20

(60% vehicle pass

bypass) – 2020

69,6 66,6 63,6 61,8 59,6 56,6

According to the forecast results as above, exceeds the limited value for

daylight time (70dB) recorded at a distance of 5m on National Road 1 and Ql20 at Dau

Giay intersection area. With a distance of 10m, the average noise level is 66.6 dBA is

forecast - 69.7 and lower than at the time of the day GHCP (70dB).

Level and scope of impact:

- Level of impact: Small and can not recover.

- Scope of impact: Business households on the QL1A at Dau Giay Intersection,

resident area at Bao Loc bypass.

b.Vibration

Assessment

- Construction activities generate vibration:

Vibration level generate from vehicle activities.

TNaL

TTAeq2

6.3log10log10log10

101010,

167

- The impact of vibration pollution generated from the operation of vehicles -

negligible impact

Results of measurement of vibration levels in most cases the project

implementation period is 61,4dB with vehicle speed of about 60km / h. Thus, the

vibration source 2025 forecast is 61,4dB route.

Forecasting the vibration attenuation with distance is based on the methods

were presented above (details of the method were presented at the construction stage).

The results are shown in Table 3:38.

Table 3.38. Forecasting the vibration attenuation with distance (dB)

Year 2035 Vibration level

(dB)

Distance (m) (*)

5m 10m 25m 50m

QL1 (vehicle evarage capacity as

plan 1)

61,4

56,6 38,4 29,5 -

QL20 51,9 32,4 23,1 -

QL20 bypass

(60% vehicle cross bypass) 45,1 30,4 19,9

-

TCVN 7210:2002; 70dB (6 + 22h); 61,4dB (22 + 6h)

(*) distance from slope

Compared with DHCP TCVN 7210: 2002 on vibrations caused by road

transport, that the vibration generated from operating smaller vehicles GHCP. Thus,

the impact of vibration, have been eliminated from the source.

Level and scope of impact:

- Level of impact: small and can not recover.

3.1.3.4. The impact due to appear new bridges and roads

Increased erosion, landslides due to appear online to avoid Bao Loc

During the construction process bypassing cities Bao Loc area by going through

the terrain slopes and heavily dissected by valleys and streams should require the

implementation of measures such as canvas hill construction, shock level ... to reduce

the slope to the technical standards for roads. It is this will form more positive slopes

on the route to avoid Bao Loc, especially from Km8 + 00 - Km15 + 00 leads to an

increased risk of erosion and landslides during the operation phase.Tác động do xuất

hiện tuyến cầu và tuyến đường mới

Increased erosion, landslides due to appear online to avoid Bao Loc

During the construction process at Bao Loc bypass area, the road through the

168

terrain slopes and heavily dissected by valleys and streams should require the

implementation of measures such as canvas hill construction, shock level ... to reduce

the slope to the technical standards for roads. It is this will form more positive slopes

on the route to avoid Bao Loc, especially from Km8 + 00 - Km15 + 00 leads to an

increased risk of erosion and landslides during the operation phase.

Economic Impact - society by appearing online overpass Dau Giay and avoid

Bao Loc

After project completion the construction phase, the occurrence of Dau Giay

intersection flyover bypassing cities and Bao Loc will entail some economic impact -

social surrounding areas as follows:

- For Dau Giay intersection flyover:

+ Traffic Activity: The formation on the overpass Dau Giay intersection of

National Road 1 and connecting roads will contribute to reduce local traffic jam

stasis by increasing the flow through the transport and reducing risk losing

traffic safety here.

+ Economic Activity: The formation on the overpass at the dau Giay

intersection of National Road 1 and connecting roads will lose business

households NH1 roadside. This will partly affect the livelihood of people in the

future.

- For Bao Loc bypass:

+ Land along the new route will change of purpose of use and land prices,

which promotes the formation of new residential areas or the spontaneous

formation of the market, the service downtown to passersby, the planning

service of socio-economic development of the city of Bao Loc. This not strickly

controlled and rational development orientation will create a certain pressure on

transport operations in the future.

+ After operating the route, a significant portion of agricultural land,

agricultural land will be converted to other purposes, leading to the formation

of residential areas, industrial factories, business parks commercial business.

Thus, the Bao Loc bypass will create a certain positive impact to the economic

- social project area.

Scope and level of impact

- Scope of impact: Small and can not recover

-Scope of impact: The business households on the QL1A at Dau Giay

Intersection àn resident areas at Bao Loc bypass

169

3.1.4. Assess and forecast the impact caused by risks, breakdown of projects

The assessment and prediction of impact caused by risks, breakdown of the

project is only considered in the construction period interchanges and overpasses Dau

Giay bypassing cities Bao Loc, as follows:

3.1.4.1. Risks, technical problems

- Source : The construction of the structure of the viductat highthave potential

high risks of technical problems caused pouring works during construction and

installation work girder beams and reinforced concrete caps. Technical problems

occuring would be a disaster, not only a threat to human life, the consequences will be

more serious with vehicles on both sides of roadworks.

- The level of impact: large

- Space: This problem mainly occurs at Dau Giay intersections viduct and

Minh Rong 2 bridge on the route Bao Loc bypass.

- Time: During the construction period.

3.1.4.2. Risks, fire incidents

- Source: During the construction phase, oil is used for the operation of the

construction equipment. Gasoline component compounds mainly carbuahydro (96 ÷

99%) should be able to evaporate quickly on the surface aerated. Therefore, very

explosive, especially when mixed in the air and see sparks. Explosion occurs will

cause physical damage, the health and safety of workers as well as the environmental

issues involved.

- The level of impact: Large.

- Space: This problem mainly occurs at Dau Giay intersections viduct and

Minh Rong 2 bridge on the route Bao Loc bypass

- Time: Throughout the construction process.

3.1.4.3. Risks and incidents of labor accidents

- Source: Occupational accidents can happen in any activity in the construction process

with the employer noncompliance with labor safety. The group major causes of labor

accidents include:

A defect in the design of technological measures: measures to prop formwork

and measures protection for soil erosion walls ... These can collapsed

buildingsand caused labor accidents;

Shortcomings in the organization of work: arrange shifts unreasonable,

improper arrangement of the order and overlapping, using non-standard

170

materials, cutting construction procedures ...;

Technical shortcoming: machinery, vehicles, instruments incomplete or

damaged, such as lack of safe structures, lack of shielding, lack of preventive

signaling system ...;

Violations of procedures, safety and technical regulations;

The risks caused by: accidents caused by trucks, slip and falldown on the

scaffolding, electrical accident ... On rainy days the risk of occupational

accidents due to the rise of land-slip, easy to incident electrical ... cause

material damage, affecting the quality of construction as well as arising

environmental issues involved.

- The Level of impact: Small.

- Space: This problem mainly occurs at Dau Giay intersections viduct and Minh Rong

2 bridge on the route Bao Loc bypass..

- Time: During the construction project.

3.1.4.4. Risks and incidents due to landslides

- Source: During the construction at Bao Loc bypassing the route is passing terrain

slopes and heavily dissected by valleys and streams should require the implementation

of measures such as canvas construction hill ... to lower level shock slope to technical

standards for roads. It is this will form more positive slopes on the route to avoid Bao

Loc, especially from Km8 + 00 - Km15 + 00 leads to an increased risk of landslides

during the rainy season create the risk of burying machinery, construction equipment

and construction workers.

- The level of impact: Medium.

- Space: Km8 + 00 - Km15 + 00.

- Time: The risks during the project implementation, especially at the stage of the

rainy season (from May to November/ years).

3.1.4.5. Risks and incidents of food poisoning

- Source: During the construction project, the majority of construction workers from

other places to live in concentration camps, the focus activities and the use of food is

not the quality or infection poison will lead to food poisoning risk high. This will

greatly affect the health of workers as well as the progress of construction.

- The level of impact: Medium.

- Space: At the camp's location.

171

- Time: The risk during the project implementation.

3.2 Commenting on the level of detail, the reliability oftheassessment methods

In the process of EIA reports, we have gathered a great amount of data, big data

and use a variety of methods EIA has a high confidence level. Therefore, the

evaluation of the environmental impact assessment report is made in detail and briefed

all the environmental impacts of the project activities due cause; This impact has been

assessed to be honest, less dependent on the subjectivity of the evaluation should be

reliability. As follows:

3.2.1. Field survey methods, monitoring and environmental analysis

Field survey work is done to collect the environmental status of the project area.

Include environmental components: air, noise, vibrations, surface water, groundwater

and soil. Some environmental indicators and the results measured directly at the scene,

such as noise, vibration, microclimate, to, pH, turbidity, conductivity ... is done with

highly modern equipment confidence high as noise meter NL21 (Japan), VM53

vibration measurement (Japan), multiple indicators to measure YSI water (USA). For

the other indicators analyzed in the laboratory. Samples taken from the scene to be

preserved in accordance with the regulations, for each parameter according to ISO and

transported to the laboratory within 24 hours. The results indicate there is trueness and

uncertainty is appropriate, reflecting the current state of environmental quality at the

time of observation.

The reliability of this method, suitable for the assessment of the environmental status

of the project to the region.

3.2.2. Method list

With this method have shown the impact of different levels of project

implementation activities to the natural environmental factors and social, portfolio

approach is very clear and easy to understand is a good basis to take decisions.

On the basis of information on the scale of the project, construction items, the

current status of the project area. We shall make the list of the project's impact on the

environment. This method is suitable for the initial identification of the project's

impact on the environment.

However, due to the information in this report period was incomplete and this

method also inherently contains many elements of subjective evaluation. Therefore the

assessment, identification can not cover all, credibility is not high.

172

3.2.3. Modeling method

The method used to evaluate the possibility of spreading contamination,

pollution levels, the estimated values of parameters quantitatively.

In this report, we use computational models Gauss, Sutton to determine the

concentration of gases in the process of construction and mining. Along with that is

the algorithm to assess the spread and impact of noise, vibrations. This is the

calculation model is built on the script fit should be the sources of the pollution

resulting detailed forecasts for each item constructed and each region is affected. The

method has high reliability and compliance with the specific scenario but not exactly

all the conditions and developments in practice.

3.2.4. Network diagram method

On the basis of the information about the project, the current status of the

project area we conducted mapping to identify network performance caused adverse

environmental impact, as well as the objects affected. This method is suitable and high

reliability in establishing causal relationships in the environmental impact assessment.

3.2.5. Survey methods, data collection Primary

In the process of conducting a survey, gathering information for the report of

environmental impact assessment of the project. We conduct surveys to collect

primary data. Survey methods applied included direct interviews and semi-structured

interviews.

With this method the evaluator has collected a lot of practical information from

local authorities and the communities where the projects.

In the process of implementation of the environmental impact assessment of the

project, the work of public consultation was carried out against the people and the

People's Committee and Fatherland Front Committee of the communes / while the

project include: Bau Ham 2 commune - District Thong Nhat, Dong Nai province;

Chau Loc and Loc Nga commune and the B'Lao and Loc Son ward - Bao Loc City,

Lam Dong Province. Employer collaboration with environmental consulting working

directly with citizens and local governments through meetings. Project owners have

received full consultation and dispatch votes feedback locality. The following

information was collected when We process and reassess, so ensure reliability.

3.2.6. Methods of collecting secondary data

The data on geological conditions, meteorology, hydrology ... regional projects

we collect through the documents have been published. The data collected to ensure

accuracy, synchronous and high reliability.

173

3.2.7. Statisti, analysis method

After collecting data by investigation, analysis ... will be analyzed statistical

data in order to revise and eliminate errors resulting rough. This method is done

through the use of statistical analysis software as useful today: Excel, SPSS ...

Therefore, this method is suitable and high reliability.

3.2.8. Environmental matrixmethod

Matrix method is used in the process of identifying the environmental impact by the

project activity will provide trend changes in quality of the physical environment,

although the accuracy is generally not high and depends on many ingredients, but this

method has a high degree of confidence in the identification and evaluation of

environmental impacts.

3.2.9. Method Expert

Expert methods used during the preparation of this report, these are people with

experience in the field of environmental impact assessment. Therefore, this method is

suitable for projects with complex nature of construction projects such as road

construction. But expert opinion after so subjective level reliability fairly.

In general, these methods are applied in the preparation of reports environmental

impact assessment is the traditional method is applied effectively in the environmental

impact assessment similar projects. Order for reporting environmental impact

assessment for the project was conducted and the specific details of the work of the

design dossier analysis, fieldwork, data processing, refer to the relevant documents ...

The identification and assessment of a project's problems based on experience outside

experts, these problems will not proceed satisfactorily expert group meeting in order to

find the most optimal solution.

174

CHAPTER IV. MEASURES TO PREVENT, MITIGATE NEGATIVE

IMPACTS AND PREVENT, RESPOND TO ENVIRONMENTAL

INCIDENTS

4.1. Measures to prevent and mitigate the negative impacts of the project

Measures to prevent negative impacts on the environment in the project area must

be primary. These measures will promote the positive role of the project, minimize

negative impacts. Therefore, the negative impacts will be minimized in all 3 phases of

the project: construction preparation, construction implementation and operation. The

following mitigation measures will be applied in the project implementation process.

Table 4.1. Summary of some preventation, mitigation measures for negative

impacts

No. Negative impacts Main measure Supplementary

measure

I Preparation phase

1 Land acquiring Adequate compensation, full support for

local people Supportive polocies

2 Building

demolition waste

Collection and transportation to

specified place Reusing in place

3 Dust pollution Watering during demolition, covering

trucks with canvas -

4 Noise Avoiding demolition in breaking time,

using ensured machines -

5 Society Traning skills, trades for local people

II Construction phase

1 Dust pollution Watering, car maintenance, proper

tonnage carrier, covering transport truck

with canvas

Monitoring, inspection

2 Noise and

vibration

Maintenance of construction machinery Monitoring, inspection

3 Surface water

pollution

Collecting solid waste, waste water,

clean the site


4 Solid waste,

hazardous waste

+ Solid waste: disposal at registered and

licensed place.

+ Hazardous waste: collection, proper

management.

Inspection

5 Soil environment Preventing soil erosion and spill. Inspection

175

No. Negative impacts Main measure Supplementary

measure

Collecting waste, waste water, clean the

site

6 Traffic Have plans and construction plans of

individual sections.

Full implementation of the regulations

on traffic safety (signage, operators, ..)

Coordinate with traffic

police to divide flow,

to resolve the problem.

7 Social issues Management workers by the provisions

of the Contractor.

Examine

8 Incidents In place rescue,

Compliance with regulations on traffic

safety, occupational safety.

Coordinate with local

authorities toresolve

the problem.

9 Bridge

construction

Plans and alternatives for materials,

waste in the bridge construction

process.

Fully implement measures to revert,

restore rivers and streams in the position

to build bridges.


III Operation phase

1 Dust arising from

the operation of

vehicles

Collecting wastes, cleaning roads

Water spray in urban areas.

Inspection

2 Noise, vibration Full implementation of the regulations

on traffic safety (signage, operators, ..)

Regular maintenance of pavement

quality, planting tree lines

Inspection

2 Traffic Inspecting and monitoring driving

speed,

Fully equipped with signs, traffic lights.

Road management

county inspecting and

monitoring.

Traffic police checks.

4.1.1. Measures to prevent and mitigate the negative impacts during preparation

phase

A. Measures to mitigate the impact of waste generation sources

4.1.1.1. Prevent and mitigate the impact from land clearance

a. Dust control during demolition, land clearance

Description

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- Watering: watering to moisten the graded area at least 02 times/day.

Moistening water is taken from the tank of the water truck.

- Waste cleanup and transportation: waste generated during demolition, grading

for land clearance should be collected and moved to approved disposal area to prevent

dust generation.

Location and time

Location: Construction positions at Dau Giay viaduct intersections and Bao Loc

city bypass.

Time: 1 month after land clearance.

b. Mitigating impacts on land scape

Description

In order to limit the impacts on landscape environment due to the types of

waste generated in the process of land clearance, the following measures will be

applied:

Collecting, classifying and proper disposal: The types of waste generated in the

leveling will be classified. The types of waste that can be reused, such as wood,

steel,… will be collected and reused. The types of waste such as rubble, concrete ...

will be transported to the disposal area (3 locations with a memorandum of

understanding with local authorities).

Classification and collection of timber: After compensation for the owners, the

trees will be felled by local people, classified for reuse for their lives.

Theunreusable parts will be considered junk, will be transported to regulated

landfill or burned.

Location and time

location: Construction positions at Dau Giay viaduct intersections and Bao Loc

city bypass.

Time: Complete after 15 days from land clearance.

d. Evaluate the effectiveness of mitigation measures and residual impacts

Moistening in clearance areas to minimize dust emissions are simple measures to

effectively reduce dust. Garbage collection measures are reasonable and treatment

measures of solid waste are in accordance with the requirements of Decree No. 38/2015 /

ND-CP of the Government.

B. Measures to mitigate the impacts of the sources not related to waste

4.1.1.2. Prevent and mitigate impacts on econo - social from clearance and

resettlement

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a. For impacts on land acquisition and involuntary resettlement

Description

To mitigate the negative impacts of land clearance, the project will establish

an overall plan for land clearance and resettlement under Vietnam Laws and adopt

some policiesfrom World Bank. The current laws of Vietnam on land management,

clearance and resettlement that are valid and WB policies can be applied include:

Land Law 2013 by the National Assembly of the Socialist Republic of Vietnam

XIII, 6th session passed on December 9th 2013;

Decree No. 43/2013/ ND-CP dated May 15, 2013 on the implementation of Land Law

passed by the National Assembly XIII, 6th session on December 9th, 2013;

Decree No. 47/2014/ND-CP dated May 15th 2014 of the Government on

compensation, support and resettlement when the State recovers land;

Circular No. 37/2014/TT-BTNMT dated June 30th 2014 by the Ministry of Natural

Resources and Environment detailed regulations on compensation, support and

resettlement when the State recovers land;

The policy provisions on compensation, support and resettlement when the State

recovers land in the provinces of Lam Dong and Dong Nai;

OP / BP 4.12 on Involuntary Resettlement of the World Bank.

And other related decisions.

.Specific solutions can be implemented as follows:

- For residential land occupation

Compensating under the principle of openness, fairness, reasonable price based

compensation provisions of the Government bracket, PPC and the policies of the

World Bank, while taking into consideration the local reality and the compensation of

the project has been being deployed in the same area to compensate for price

regulation.

According to the overall plan for the clearance of the project, the involuntary

land acquisition and resettlement in the communes / wards on the bypass of Bao Loc

city, specifically including: Loc Chau commune, B'Lao ward, Loc Sonward and Loc

Nga commune. Performing on-site resettlement for households partly occupied and

still enough land in resettlement, focus to households in the area of land that is left

after recovery is not eligible to stay according to the regulations of state agencies that

are no longer competent to other places, have to relocate. These households that have

to be relocated will be resettled in residential areas, resettlement has had on the city of

Bao Loc like: B'lao ward Zone 3, Loc Tien Ward Zone 3.. This is the area re available

settled in the city of Bao Loc, and has been perfecting the infrastructure such as road,

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water supply, water supply ... Besides, a number of supportive policies will be

implemented include:

+ There are priority policies for households well observed the handover of land

clearance, policy households, households producing business have to relocate,...

+ Relocation allowance for households when the State's recovery of land that must

move assets.

+ Supporting housing for households whose land is recovered in that no other

accommodation pending the creation of new supported accommodation rental housing

to take care of accommodation. If the State had to allocate funds (including temporary

housing residents) are not supportive.

+ Supporting stable life for troubled, policy households.

Specific policies on compensation and assistance for resettlement will be discussed

in detail in the report "The general plan for site clearance and resettlement".

- For agricultural land occupation

The main purpose of these measures is reducing the loss of income for

households temporarily and permanently revoked in agricultural land occupation, the

main measure used is compensated according to the price of land and crops at the

DMS . Besides, the policy support will also be deployed to stabilize the lives of people

including:

+ Households and individuals directly engaged in agricultural production when

the State recovers agricultural land, support stable life and stable production following

principles: support 01 times and prorated on the land acquisition the total area of

agricultural land is used by individual households in the communes, wards or

townships. Specifically, if recovered from 30% -70% of agricultural land is used, not

relocated is supported 06 month-time and support 12 month-time if relocated. When

households losing more than 70% of agricultural land, not relocated, support 12-month

time, support 24 month-time if relocated.

+ Support training, job change and seeking employment for agricultural

producers whose land is recovered in cash at 1.5 times or 2 times the land price table

issued by Dong Nai and Lam Dong provinces.

+ When employers perform basic work of the project, the loss of agricultural

land will be the subject of priority in recruitment.

Issues related to complaints and resolving complaints will be made in

accordance with state regulations on complaints and resolving complaints:

Law No. 02/2011 / QH13 of the National Assembly on complaintsof the Socialist

Republic of Vietnam;

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Section 2 - Chapter VI - Land Law No. 13/2003 / QH 11 (Settlement of disputes,

complaints and denunciations on land).

Subjects and time of implementation

Subjects:

+ The beneficiary households have agricultural land acquisition on Bao Loc

bypass;

+ Households and business households have shops and housing partly occupied at

intersections of Dau Giay - Bau Ham 2 commune - Thong Nhat District - Dong Nai

province.

+ Households occupied partly or most of the land, buildings atLoc Chau commune,

B’Lao ward, Loc Son ward and Loc Nga commune – Bao Loc city – Lam Dong

province;

Implementation time: Complete before construction phase.

b. For impacts from temporary land occupation

Description

To minimize the impact of temporary land occupation of households, the following

measures will be applied:

Contractor wants a temporary land use to comply with approved clearance and

resettlement plan including compensation guidelines for used land during

temporarily use;

Project Investors and contractors to agree to restore the original state for use land

temporarily and are accompanied by land reclamation costs in accordance with

the compensation for site clearance and resettlement approved residence. Project

owners must plan, the land lease contract with land owners certified by the local

government in the position. Before using the land, the project owner / contractor

must inform local governments about the plan and construction schedule.

Subjects and time of implementation

Subjects:Households have agricultural land being temporarily occupied;

Implemtation time: Complete before operation phase.

c. Evaluate the effectiveness of mitigation measures and residual impacts

Experience has shown, to any scale, while land acquisition often creates long-

term social impact, although this land acquisition to serve national interests and the

public, the compensation is made follow compensation, support and resettlement plan

have the consent of the person affected. Practical experience shows that, if the Council

of site clearance compensation and resettlement implement the following, the

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contradictions in society will be much settled:

Extensive propaganda on economic development policy and compensation policy

of the state to the affected families, as well as their obligations and rights;

Publicizing the compensation rates for each detail of each asset affected. Publicity

accuracy compensation mass of each household;

Have policies to support poor families and policy family;

Have policies to reward those who perform hand over earlier than planned

progress;

Public disclosure of information about the project, the construction schedule for the

local and affected households, policies and support plans for compensation and

resettlement;

Create mechanisms for affected people to complain, feedback;

Project ensure timely and adequate funding for the site clearance and resettlement.

4.1.1.3. Controlling noise levels during demolition, leveling create space

Description

Limit leveling time: Not leveling for construction side at night from 22 ÷ 6 near

residential areas.

Limit simultaneously operating machines: When conducting leveling, operate only

one type of machinery and equipment, turn off the equipments when not needed to

avoid resonance noise.

Using ensured machines, equipment: The machinery and equipment used in the

demolition process, leveling to create space must ensure noise levels arising under

TCVNs to avoid creating excessive noise.

Location and implementation time

Location:At residential area around Dau Giay viaduct and Bao Loc city bypass;

Implementation time: 1 month leveling the site.

4.1.1.4. Traffic safety ensure

Mitigation measures

In the process of land acquisition, to avoid a negative impacts on traffic safety

on existing lines, the contractor should implement measures to ensure traffic safety on

the basis of the provisions of Circular No. 39/2011 / TT -BGTVT dated May 18th

2011 of the Ministry of Transport guiding implementation of some articles of Decree

No. 11/2010 / ND-CP dated February 24th 2010 of the Government for the

management and protection of infrastructure of road traffic, as follows:

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+ No demolition machines were gathered on existing roads.

+ For sensitive traffic locations, such as at-grade intersections, crowded

residential area ... not to arrange demolition during rush hour.

+ Limiting waste spillage during demolition and transportation. If there is a

cleaning, collecting, avoid obstructing traffic.

+ Limited smoke, dust polluting the environment from demolition activities,

affect traffic safety on roads;

+ The workers involved in the demolition should have the knowledge, comply

with regulations on traffic safety. It is strictly forbidden to drink alcohol while

controlling the means of construction.

+ Installation of signage system indicates the active ramp demolition and

construction for the transport to avoid confusion when traveling in this area

+ Staffing to regulate traffic where necessary.

Evaluate the effectiveness and feasibility of measures to ensure traffic safety

Measures to ensure traffic safety are made on the basis of the general

regulations of the State management agencies and the actual situation of the project, on

the other hand this is a mandatory requirement for the investor as well as the

contractors must ensure. Therefore the proposed solutions are feasible when applied to

reality.

Locations and implementation time

- The location deploy measures to prevent occurrence of unsafe traffic: Dau

Giay intersections, Bao Loc bypass – NR20 intersections (at Km113+727 and

Km128+800 on NR20), NR20-NR55 intersection (at Km9+600 on NR20 bypass).

- The mitigation measures were implemented during the clearance of the

project.

4.1.1.5. Completion requirements for official construction

Description

For the purpose of providing information about the project, the environmental

protection measures of the project for the local communities where the project aims to

create a social consensus, will apply these measures:

Information publicity: After the EIA report of the project was approved by the

Ministry of Natural Resources and Environment, the project will establish, approve

and publicly listed environmental management plan at the headquarters of the

People’s Committee of communes / towns where there area community

consultation. The content of the environmental management plan shall comply with

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Clause 2, Article 16 of Decree No. 18/2015 / ND-CP dated 02/14/2015 of the

Government on environmental planning, assessment environmental strategies,

environmental impact assessment and environmental protection plan. Through it,

local people can understand the information of the project and participate in the

inspection and supervision of the implementation of environmental protection

measures of the project.

Installation of signs: will install signs at the construction scope out locations on the

residential area to be known and not violating construction safety corridor. In the

site will install safety warning signs to prevent the risk, unnecessary accidents.

Locations and implementation time

Location:

o Disclosure in communes / towns in the project area, as: Bau Ham 2 commune –

Thong Nhat district – Dong Nai provinceandLoc Chau commune, B’Lao ward,

Loc Son ward andLoc Nga commune – Bao Loc city – Lam Dong province;

o Installation of signs at the boundaries of site clearance, construction site.

Implementation time: before official construction.

4.1.2.Measures to prevent and mitigate the negative impacts of the project during the

construction phase

A. Measures to mitigate the impact of waste generation sources

4.1.2.1. Prevent and mitigate environmental impacts to ambient air

a. For the impacts of dust and emissions generated from the roadbed earthwork

operations

Description

To mitigate air pollution by dust and emissions generated from earthworks and

related activities, the following measures will be implemented:

Location to store temporarily soil wastes and construction materials must be placed

away from sensitive subjects at least 100 meters including residential areas along

the route. Temporary storage areas for material and waste rock and soil must be

surrounded by earthen embankments up tight (possibly reinforced with piles if

necessary) to avoid spillage on sensitive subjects, it's also good for the prevention

of soil erosion during the rainy season. Storage areas should be covered or

moistened surface water to avoid spreading dust off the surrounding area,

especially the residential areas and schools, clinics...

Watering in rainless days. This measure was implemented in the construction

sectors have generated dust and areas near sensitive objects. Frequency of watering

in the dry season will increase focus on densely populated segments and major

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traffic density (in this case moisten watering can apply once an hour, watering with

sufficient amount to avoid excessive watering that cause slippery muddy road).

The machinery and construction equipment to ensure certification under "Technical

safety and environmental protection check".

Absolutely not burn solid waste difficult to degrade like plastic, fabric, plastic, tar

... and other hazardous waste within the site and in the residential areas and other

sensitive points. Absolute compliance with strict measures of collection, treatment

prescribed.

Monitoring dust parameters with TSP, PM10. In addition, it is neccessary to

monitor the implementation and compliance with mitigation measures,

environmental protection of contractors.


Location:

o At residential areas along the construction route at Dau Giay viaduct

o At residential areas at Bao Loc city bypass: Anh Mai residential area – Loc

Chau commune (Km0 – Km1), An Ninh residential area – Loc Chau commune

(Km1 – Km2), bypass – NR55 intersection (Km9+600), Nasari residential area

– Loc Nga commune (Km12+750), Nga Son residential area – Loc Nga

commune (Km15+300).

The storage location of materials such as: Km 0 + 100 and Km1+ 880 on NR20

for Dau Giay intersection viaduct construction and the improvement and expansion of

NR20 from Km0 - Km1 + 880; Km0 + 800, Km3+ 200, Km6 + 00, Km9 + 600 and

Km14 + 600 of Bao Loc city bypass.

Implementation time:During construction time (18 months).

b. For impacts by dust and emissionsgenerated from material and soil waste

transport operations

Description

To reduce air pollution by dust and gases generated from the transportation of

materials and waste soil and stone the following measures will be implemented:

The materials and wastes being transported on the road that may generatedust

should be moistened the surface. The vehicles used to transport must have cover. In

case of vehicles without cover, will use canvas to cover material.

From 6 8h; 11 12h, 13 14h và 16 18h limit materials and soil and stone

wastes on local roads.

Clean up spilled material and watering on the roads transporting materials to

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reduce dust, especially in residential areas in Bau Ham 2 commune - Thong Nhat

District, Dong Nai Province and communes / wards such as: Dai Lao, Loc Chau,

Loc Son, Loc Tien, B'Lao and Loc Nga - Bao Loc city, Lam Dong province.

The means of transport must comply with certification " Technical safety and

environmental protection check ".

Transported materialsmust not be too dry and humidify to reduce dust emissions

during transportation.

Vehicles transporting tires will be cleaned before leaving the site to avoid carrying

soil, sand from to the roads.


Location:

+ For Dau Giay intersection: transportation route on NR1; NR20 from Km0 –

Km20; PR769.

+ For Bao Loc city bypass:NR20 passing Bao Loc city, NR55 and some urban

roads in Bao Loc city.


c. Evaluate the effectiveness of mitigation measures and residual impacts

The proposed measures are based on the principle of mitigate dust at the source

not only create high efficiency but also reduce the basis for regulating the operation is

to reduce the level of pollution (if it happens) in the object is sensitive residential

areas, schools, health centers .... Proposed measures are feasible for simple technical

and easy execution conditions. To increase the feasibility of the proposed measures,

implementation costs will be included in the total investment of the project and the

contents made to contractors as well as the content of supervision of consultants will

be included in it bid amounts; under the terms of an economic contract, the project will

carry out inspection measures to require contractors and supervision consultants to

comply with contract. However, mitigating the impact of pollution caused by dust in a

transportation project has many objects with different sensitivity levels hardly absolute

satisfaction according to QCVN05: 2013 / BTNMT. Residual effects on air quality of

the environment, so still a special concern of the project. Through surveillance

activities, the project will require the contractor to strengthen measures if necessary, to

maintain air quality at acceptable levels.

4.1.2.2. Prevent and mitigate environmental impacts on surface water

a. Prevent the risk of soil spillage and sediment erosion in the roadbed construction

earthworks and drainage system construction

Description

185

Preventing the risk of spillage or mud sediment erosion in construction

activities and earthworks lay the temporary storage of materials, soil types, through

measures:

Developing suitable construction plan: For construction of Bao Loc city bypass

should develop plans for construction work for excavation to take place mainly

during the dry season to reduce erosion, sedimentation of land.

Executing tight and compact construction: In prolonged periods of rain, will

perform construction swiftly each roadbed sector and compact to avoid erosion

caused by rain, while checking the embankment before each rain, if it is capable of

erosion, will continue to reinforce.

Fast collection and transport of rock waste to disposal and leveling area:collecting

soil waste on the dump in the clearance area. Soil waste will not kept at each dumb

until the end of construction that is gradually moved of the disposal area as

prescribed. In particular, the period of prolonged rain, to immediately transport the

waste area as prescribed; the rest that still can not be moved away would be further

shielded from rain.

Clean spilled lands: In case of overflow mud in residential land along the road,

these lands will be clean and restore the original state.

Cover temporary storage area for materials and waste land: Use the barrier around

the earth retention and disposal of materials in order to avoid spillage into adjacent

areas. At the same time, the necessary coverage to avoid dump soil erosion.


Location:along Bao Loc city bypass, of which, some impacted areas should be

focused such as:

+ Natural water convergence slots at Km1+068; Km1+313,8; Km1+582,16;

Km2+750; Km3+150; Km3+297; Km3+297 - Km3+934,95; Km4+634,5; Km6+900;

Km7+179 - Km7+772; Km8+094,36; Km9+254; Km9+909,39; Km10+438,82;

Km12+142, 5; Km13+875,5; Km14+782,15;

+ Existing streams at: Km2+154,76; Km4+838,95; Km5+881,3; Km6+378,36;

Km8+500; Km11+165,59 (Minh Rong 2 bridge - Dabrim stream); Km12+285,77;

Km13+241,63.


b. Prevent the risk of local flooding and affect water environment due to rainwater

runoff.

Description

In order to prevent the risk of local flooding taking place near the roadbed

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earthwork, the following measures will be applied:

Execute and finish items quickly, especially in the rainy season;

Not let construction materials, and waste soild and stonebury drainage system in the

area;

Check the operation of the horizontal drain: location along the sewer needs to be

checked and clearance until ensure drainage;

Flow runoff containing sediments focuses on temporary vertical grooves in the

construction sector led to the deposition holes before flowing into the sewer or

irrigation canals;

Earth embankment carefully at the negative talus when carrying out earthworks, road

expansion to avoid the situation that caused landslides buried and crop flow of locals;

Strengthening site hygiene, cover material dumps, waste dumps, fuel depots,

petrol to avoid the rain water penetrates under ground water levels;

Materials, toxic chemicals such as oil products will be placed in positions so that

they can not penetrate directly into the water under the influence of rainwater

runoff flow;

Do not spill fuel, oil, grease and chemicals into the surrounding environment to

prevent stormwater runoff pollution.

Arrange grooves and holes to collect rainwater runoff within Dau Giay expressway

viaduct construction.

Design collection grooves and holes along Bao Loc City bypass, the slope formed

by the top line should be covered up to avoid melt flow direction along the slope.


Location:Along Bao Loc city bypass;


c. Mitigating the impacts caused by waste water from domestic workers and

machinery maintenance

Description

- Domestic wastewater in the construction area, construction management office

is handled through common septic tanks to each area, ensuring that the parameters

meet the requirements in QCVN 14: 2008 / BTNMT will be discharged to the drainage

of the region.

- In case Contractor workers arrange homestays or public works in project

area,domestic wastewater should be treated together with the preliminary treatment

system of localpeople.

187

- Wastewater from operating activities of workers at camps should be collected

and processed. Measures to encourage the application processor is used to regulate the

construction of water tanks, then treat circadian type (excavation, geotextile liners).

- On Dau Giay intersection viaduct construction sites, Contractor arrange

portable toilet. After a period of full waste containers will be replaced or taken

elsewhere to handle.

- Remind workers to go to toilet at prescribed places.

- Water after washing, maintenance of a car and vehicles will be collected and

pre-treated before being put directly into the environment, such as sedimentation to

remove suspended solids through a system of canals and water gathering holes

deposition , grease collection losses (if any). Besides, should apply in conjunction with

other relevant measures such as:

+ Do not place the car wash location, maintenance of machinery, machinery

centralized location near surface water sources such as lakes, rivers and streams.

+ Do not place the feed station near surface water in the project area …


- Location:Along Bao Loc city bypass and around Dau Giay intersection;

- Implementation time:During construction time (18 months).

d. Mitigate the impact of waste water containing bentonite from the bridge

construction process

Description

- In the process pile construction, the use of bentonite must be conducted in the

siege by land or steel to ensure no spillage of waste water into the environment and the

entire land and although bentonite and bentonite liquefied spill pour required to be

collected and handled according to recommended the following forms:

+ For the construction of Dau Giay viaduct: Around pile drilling locations will

be gathered again with iron plates to avoid spillage crank drilling out besides, waste

services will be continuously sucked into the clarifier to settle as in water and

recovered for re-use bentonite mud.

+ For Minh Rong II bridge construction on Bao Loc city bypass:

Construction of piers (abutments) on land: mix of land and bentonite although

liquefied and spilled bentonite would pretreatment in a park, as follows:

bentonite waste liquid will be collected in cisterns or ditch to avoid discharge

directly into the site, then will be settled, to preliminarily dry and transport to

regulated dump siteor either recycled or recovered betonite;

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Construction of piers adjacent flow: although liquefied and spilled bentonite

will be transferred to the park on the shore and placed in the containers, after

being deposited to dry and then shipped to waste dump has been prescribed,

recycling recovered betonite.


- Location:Dau Giay intersection viaduct and at Km11+165,59 (Minh Rong II

bridge – Dabrin stream);

- Implementation time:During construction time (18 months).

e. Evaluate the effectiveness of mitigation measures

These measures mainly focused on aspects of management, and technical

aspects of the simple measures and in the ability of contractors implementing and

funding of projects.

For many projects the implementation of mitigation measures contractors is

often ignored. To ensure the feasibility, the measures required to implement the above

will be recorded in the economy contract between the PMU 7 and contractors.

Through monitoring, PMU 7 will force the contractors strictly adhere to the contract,

residual impacts are acceptable.

4.1.2.3. Prevent and mitigate the impact from solid waste

a. Domestic solid wastes

Contractors will hold responsibility to manage and collect domestic wastes on

site. The mitigation measures are applied including:

- Equiping trash for garbage collection and arranging in appropriate positions in

workers' camps and offices of the steering committee.

- Domestic waste will be collectedby assigned worker periodically collecting and

moved to the location of the local garbage collecting. Absolutely not to mix up the

hazardous waste such as old batteries, light bulbs burning, oily rags, ink residue ...

with household waste.

- Waste from office: arranged workers weekly collect to garbage from the

whole office, contained in plastic bags.

- Investors and builders frequently remind employees to practice thrift, take full

advantage of these widgets can be reused to reduce emissions into the environment.

- PMU7, BT20 and contractors need to sign economic contracts with

environmental companies for their garbage collection activities arising from the

construction work (periodically collected according to regulations and the actual

situation in the site). In case of wastes from construction camps are not collected and

handled, domestic waste must also be collected and processed. Processing forms

189

applied include collecting and sorting waste, waste treatment for biodegradable

fraction and disposal persistent in collecting garbage or local landfill.

- Organizing education, raising awareness of environment hygiene for workers

b. Construction wastes

During construction, the building will generate a lot of solid wastes such as

waste soil, packaging, waste asphalt concrete ... these wastes interfere and cause

unsafety in construction. To mitigate the impact, the following measures were

implemented:

- Minimizing waste generated during construction by rational calculations of

materials, educating and strengthening workers on awareness of savings and tightening

management of raw materials, implementation of monitoring measures.

- The entire construction solid waste will be collected daily by workers

according to the motto “be complete, be neat”. The entire construction waste after

collection is concentrated in defined areas on site.

- Classification of the construction of solid waste to the appropriate processing

measures, such as:

+ Scrap iron and steel, cement packaging is collected for selling.

+ Formwork wood is reusable.

+ Soil, rock and rubble was fully utilized in the construction.

+ Waste mud, soil must be transported to the permitted disposal place.

+ Asphalt after being peeled, removed from the old road bed to be discharged

and treated atregulated places.

+ Bentonite sludge arising in during pile construction should be deposited, dried

and disposal along with the improper dumping.

- During the construction waste transporting process, do not transport

overburden, waste is covered and not dropping off the road. Transport vehicles before

leaving the site needs to be cleaned soil tack on tires.

* Evaluate the effectiveness and feasibility of mitigation measures for

construction and living solid waste

Measures to reduce solid waste in construction phase given as above are highly

effective and feasible with simple techniques, manage at source. Along with that the

propaganda and educating workers on the management of solid waste will reduce the

volume of solid waste dumped directly into the environment. The construction

contractor perform the contract signed with the functional units for collection and

treatment of solid waste in accordance with regulations.

190

* Location:At all road construction places, workers’ camps.

* Implementation time: During construction phase and environmental reverting

phase.

4.1.2.4. Prevent and mitigate impacts from hazardous waste and hazardous materials

* For storing fuel oil and waste oil:

To minimize the negative impacts from fuel oil and waste oil generated during

the construction phase of the project, Project owner will require contractors to

implement mitigation measures as:

- Maintenance areas will be located temporarily and systematically collect

waste grease from the maintenance process, maintenance of motorized construction

equipment.

- Waste grease generated in the project area are not allowed to be buried and

must be collected in suitable containers located in the project area.

- The total volume of waste oil generated at the site must be collected and

handled in accordance with regulations.

- The construction contractor should sign economic contracts with functional

units for collection and treatment as regulated.

- Fuel oil storage areas need covered, the oil tank must stand, put on concrete and

concrete walls (bricks) to prevent oil spills:

+ For Dau Giay intersection viaduct: Area storing fuel oil near the material

gathering locations.

+ For Bao Loc citybypass: fuel oil storage area located near the gathering

material position and put away at least 300m from surface water, natural flow.

* For other hazardous waste:

- Separating collection for different types of waste, contained in the equipments

with lids and signs to recognize hazardous waste as regulated.

- The hazardous waste must be located in the temporary storage area met the

technical requirements prescribed as: container with a lid, storage areas must be covered,

away from water…

- These contractors need to register with Dong Nai and Lam Dong Department

of Natural Resources and Environment to be issued register of waste generators of

hazardous waste in case of at each construction unit hazardous waste generation has

contains hazardous components especially threshold prescribed in QCVN 07: 2009 /

BTNMT for volume larger than 120kg / year or 600 kg / year for hazardous waste

containing hazardous components other; except where the list of hazardous waste

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Persistent organic pollutants (POP) under the provisions of the Stockholm Convention

on persistent organic pollutants degrade. The base-level registration procedures for

hazardous waste generators should be done according to the technical requirements of

Circular No. 36/2015/TT-BTNMT, dated June 30th2015 by Ministry of Natural

Resources and Environment regulating Management of hazardous waste and are

registered in the Dong Nai and Lam Dong Department of Natural Resources &

Environment.

- The Contractor must implement economic contracts signed with the functional

units hazardous waste transporting, treatment and periodically transported to the

treatment under the provisions of law.

* Evaluate the effectiveness and feasibility of mitigation measures

Develop and implement management plans for hazardous waste generated

during construction is legally required. Therefore, the project will ensure the

implementation of commitments before the State management agencies on

environment and content made to contractors, as well as the content of supervision of

consultants will be included in the terms of the bid; under the terms of an economic

contract. The project will carry out inspection measures to require contractors and

supervision consultants to comply with contract.

Besides, the management of hazardous waste are implemented through

regulatory measures in the arose area. At the same time, the transport and handling of

hazardous waste will have functional units implemented through the signing of

economic contracts with Contractor.

Therefore, the effectiveness and feasibility of the proposed measures, thus

guaranteed. The fact that if the strict implementation of the above measures can ensure the

collection to 90% of hazardous waste mentioned above.

* Location:Machinery parking place, workers’ camps.

* Implementation time: During construction phase.

B. Measures to mitigate the impact from sources not related to wastes

4.1.2.5. Prevent and mitigate the impact caused by noise and vibration

a. Mitigate noise impacts

Description

The aim is to make the content required to apply for construction activities to

comply with legal requirements on environmental protection during construction

activities; simultaneously offering contents implemented to ensure effective noise

reduction without spending additional expenses.

Requirements for applicable regulations: 55dBA and 70dBA limit during the day

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fromQCVN 26: 2010 / BTNMT - National Technical Regulations on noise criteria

apply to safety on the noise impact arising from the operation of the project during

construction phase.

Compliance with regulations on construction organization:Include:

o Arranging the machines generating noise in a position with suitable distance

such that the noise spread to residential areas and offices no higher than 70dBA

and to schools, health centers no higher than 55dBA. This noise levels are

declining rapidly on the principle of double-spaced on increase, decrease noise

levels 3dBA;

o Turning off machines when not required in order to minimize noise levels

accumulate;

o All equipment and machinery in the site will be checked every 3 months / time

on noise levels and make the repairs and adjustments necessary to ensure the

safety and does not cause noise levels excess standards under the guidance by

environmental protection Committee of US noise from the construction

equipment and construction machinery NJID, 300.1, 31. - 12-1971;

Recommend contractors restrict machinery operating simultaneously to reduce

noise levels and accumulation. For example, during excavation and transporting,

truck engines are turned off when the bulldozersoperate.

Setting the noise barrier in front of residential area at construction location of Dau

Giay intersection viaduct.

Monitoring noise levels in sensitive subjects along the routeto have plan to

organize the construction in case the noise level too high.

Locaton and implementation time

Location: Dau Giay intersection viaduct and some residential areas near Bao Loc

city bypass.

Implementation time:Construction phase.

b. Mitigate the impacts caused by vibration

Description

- Application of modern construction technology to mitigate vibration to avoid

affecting people and works on both sides of route, such as: instead of using steel sheet

piling hammer, Contractor should use piles presser to reduce vibration.

- Restrict heavy lorries transporting materials at night.

- The drilling conducted in daytime and have anti-vibration slot systems

surrounding special drill area for construction of Dau Giay viaduct.

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- Periodic check and maintenance of construction equipments.

- Distributed operation of construction equipments, especially for the

equipments with high vibration such as: Vibratory Roller.

- Arrange vibration reduction ditch on 2 roadsides at Dau Giay intersection to

reduce the effects of vibration to people.


Location: Dau Giay intersection viaduct and some residential areas near Bao Loc

city bypass.

Implementation time:Construction phase.

c. Evaluate the effectiveness of the mitigation measures

- Effectively reduce noise in residential areas and sensitive objects along the

project is quite high through the implementation of common rules as well as measures

to reduce noise at source, and monitoring noise at receptors to take the appropriate

corrective measures. To ensure the feasibility of the proposed measures, the contents

of the proposed measures for contractors as well as the content of supervision of

consultants will be included in the bid terms; under the terms of an economic contract,

the project will carry out inspection measures to require contractors and supervision

consultants to comply with contract.

- The vibration mitigation measures are easily applied in practice and if

implemented synchronously, appropriately will have high efficiency in mitigation.

4.1.2.6.Prevention measures for erosion, spill and soil pollution.

a. Preventing the risks of landslides during the slope construction.

Measurement description

For Bao Loc city bypassing route, in order to prevent the risk of landslides

because of seperating soil layer, the following measures will be performed:

The construction will be arranged so that the digging area size is minimum during

periods of high rainfall (rainy season). The examination of the mud flow spilling is

regurlary, particularly the area is near the slope. In case the sediment flow is

uncontrolled, excavation activities will be suspended in order to perform the

measures. Excavation activities will continue only after performing the necessary

measures and the construction supervision.

After lowering the slopes, vertical trench excavation should be construct in order to

waste soil and drainage. During training slope background, drainage should be

ensured when it rains. Do not let stagnant water causing landslides and flood

causing damage and unsafe road.

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Positions and schedule

Position: Construction sites that have the risk of landslides along the bypassing

route in Bảo Lộc city.

Time:18 months during construction.

b. Controling erosion and sedimentation at the storage field.


- The temporary land field and wasted soil from the roadbed earthwork

activities and construction will be gathered on the seperated dumps. The dump will be

located in the vacant land within the construction site and far from surface water

sources.

- The dump's size is about 20m2 can be easily covered during the rain and prevent

dust emissions on sunny and strong wind days. The dump is surrounded by geotextile

fabric and buried deep into the ground about 15 - 20cm.

- Wasted soil will be moved gradually to the landfill with the approval of local

governments.

Position and Schedule

Position: At the material storages of Dầu Giây intersection overhead bridge and the

bypassing route in Bảo Lộc city.


c. Preventing erosion and spillage outside Project’s boundary.


- Dầu Giây intersection overhead bridge:

+ The contractor will set the iron fences to prevent soil spillage and construct

high brick fences with 20cm height to prevent mud and surface rain, mud flooding the

road.

+ Spilled water will be collected into the ditch and sediment is deposited before

the water is released from the drainage system to the area.

+ Mud at the partitions will be collected regularly. After construction, partitions

will be removed

- Bảo Lộc city bypassing route:

+ Along the foot of the slope, embankment will be put around the construction

site to prevent spilling sediment to the lowland.

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+ Arranging the water collection system vertically at the bottom edge

construction site (temporary ditches and sumps). The soil and sediment will be trapped

in the ditch and sedimentation pit, then follow canals to rivers and springs.

+ Wet Concrete and wasted mortar will be collected and transferred to the

temporary dumps with the approval of local authority.


Position: Dau Giay overhead bridge construction site and bypassing route in Bao

Loc city.

Time: 18 months during construction.

d. Controlling erosion in Bảo Lộc city bypassing route:


- Controlling soil erosion during roadbed excavation:

+ Ensuring to finish before rainy season.

+ During excavation:

Limiting land clearance which has vegetable outside the clearance ;

Conducting training in areas with a high positive slope, digging in the

dry season;

Conducting slope stabilization and erosion control before the peak period

of the rainy season.

+ Land preparation for the rainy season, construction of temporary drainage

canal to transfer water far from potential erosion areas.

+ Make sure the horizontal drain is new, drainage system is currently being

installed and can operate before the rainy season.

+ Make sure that grass is replanted at the slope after finishing construction.

- Controlling soil erosion during the bridge construction:

+ Measures implementation designed to minimize erosion near river side. This

could include the construction of embankment stone and grass replanting on slopes..

+ When digging pit in the wet season, make sure that the position of the

temporary spill collection equipments are placed around the pit.

+ Measure implementing to ensure that there is no bentonite mud into water.

+ All bentonite mud should appropriately transferred and stored in a temporary

warehouse.

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+ Preventing solid waste generated into the water source during bridge

construction. This includes the use of the grid lined with geotextile as a barrier to the

during the bridge construction.

+ To prevent the collapse of the road at the head of the bridge, the surface slope

should plant, erosion control, and combined with appropriate drainage system.

Position and schedule

Position: Bảo Lộc city bypassing route, especially at Minh Rồng II bridge and

from Km8+00 to Km15+00.


e. Soil pollution prevention:


- During the construction, There are following basic measures to minimize the

impacts, including:

- To encourage the utilization of surplus land that are qualitied to levelling

industrial site, residential areas and others on the basis of an agreement with the

Organizations, contractors and investors.

- To prevent the possible impacts around the environment of the dump, wasted

soil before dumping will be checked if these are toxins in the soil, then they will be

checked periodically to determine the specific measures if the concentration of heavy

metals in the soil exceeds the NTR 03: 2008 / BTNMT.

- Constructing the sections seperatedly and tightly compacting.

- Collecting and transporting wasted soil, wastes asphalt concrete to leveling

position. If the rest is not moved immediately, they will be temporarily shielded from

rain.

- Sand field and stones are not gathered near residential areas, the drainage

system to limit spilled water.

- Cleaning up spilled soil in case of overflowing mud to agricultural lands.

Position and schedule

Position:Seperated sections of Bao Loc city bypassing route.

Time: During 18 months of construction.

f.Evaluating the effectiveness and feasibility of mitigation measures

Measures for erosion, landslides and sedimentation are mainly technical

measures that are studied and applied in reality. Therefore, their effectiveness is

quite high. Besides, limiting erosion, sedimentation and local flood are mandatory

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to ensure the progress of construction and safety, so the possibility of applying to

the real construction is high.

4.1.2.7. Preventing negative impacts on the economy - society

a. Preventing impacts on public facilities


The measurement's aim is to prevent and control the risks of damaging the road

with low level of solidification when transporting materials and soil types in the route

and preventing people's access to public facilities in Dau Giay intersection overhead

bridge.

For the National Road and Provincial Road:

No overspeed and load allowance.

Cleaning:Road and Wasted soil, ensuring no slippery when it rains.

When using urban roads to transport:

Local agreements: Official document about using the temporary use of inter-

village roads, inter-communal roads for transportation purposes;

Transportation organization: No materials transportation and soil types in the

period of high proportion use and the holidays. The project contractor has the

responsibility and commitment to avoid transporting at this time;

Hygiene measures and revertation: Ensuring hygiene and safety during the road

use and maintenance, ensuring safety and restored to its original state.

For the construction of Dau Giay intersection overhead bridge:

Fast construction and the construction sites don't prvent people accessing useful

road during the execution and drainage systems.

For the construction of Bao Loc city bypassing route:

Construction at the intersection should be connected with urban roads to ensure

the safety transportation; Avoiding storing materials and machinery obstructing

transportation..


- Position:Material transportation routes of Bao Loc city bypassing route and

Dau Giay overhead bridge.

- Time: 18months of construction.

b. For the impactsfrom centralized workers

Description

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Worker management: The project provided the occupational conditions such as

camps, water, power to ensure that workers living in camps in the site are of health

care during construction. Register temporary residence for workers; educate

construction workers to respect cultural, religious and local beliefs; prohibit

drinking alcohol while performing construction, prohibit gambling at the site and to

schedule (working and breaks) for workers.

Coordinating with locals:

o Coordinating with local authorities, including the Vietnam Fatherland Front

Committee and the Women's Union with the aim of promoting the

understanding of the workers' in social evils, prostitution, HIV and diseases in

the region...;

o Coordinating and cooperating closely with the local community to keep hygiene

when there are signs of diseases symptoms appear in the region;

o Coordinating and cooperating with local authorities in preventing and fighting

social evils;

Using local labor:Use the local unskilled workers, both women and men to do the

basic work. For some jobs may require re-training, the contractor will select among

locally hired employees to train them in new skills so they can do a good job.


- Location:Areas of centralized workers.

- Implementation time:Construction phase.

c. Evaluate the effectiveness of the mitigation measures

- The measures prevents the impacts damaging community facilities are often

simple and applicable measures, thus highly feasible, besides the application will

effectively mitigate the effects.

- Measures to mitigate the impactsfrom centralized workers are also regulations

on work safety and environmental sanitation project during construction that should be

put into tender contracts. This legal constraints create conditions for full

implementation of the proposed measures.

4.1.2.8. Preventing, minimizing impacts on the traffic

a. Preventing risk of congestion of the traffic or traffic accidents at Dau Giay

intersection

Description of mitigation measures

The aim is to prevent the risk of congestion or traffic accidents during the constructing

Dau Giay flyover intersections, the following measures will be applied:

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General measures:

o The construction contractor must make detail plans for ensuring traffic safety in

the construction phase.

o The construction of the overpass on the old road as part of the new road has

been completed, to ensure the safety of vehicles.

o Compliance with Circular No. 39/2011 / TT-BGTVT dated 18/05/2011

regulations on the management and protection of infrastructure in road traffic

(Chapter VI Ensuring traffic safety and traffic during the construction within

the protection of infrastructure road operating):

+ Getting Construction Permit on the road operating: Before constructing on

National highway no.1 need to consult mangement unit (Road Management Zone).

+ Traffic safety guarantee: During the construction process to ensure traffic safety

on the route, machinery and materials must be arranged so as not to obstruct vision.

With the current road surface, ensuring at least one traffic lane on the road still in

the process of paving road surface layer and installing notice board, putting traffic

instructor either bridge end of Dau Giay overpass construction. Establish metal

sheet to separate construction site with current road.

+ Set works signs, speed limits signs at two sides of construction area and when it

is necessary to need to assign personnel to control traffic.

+ Regularly clean the dust and mud on the road.

+ Guiding traffic to ensure reasonable traffic management within paving road

surface. Arrangement pepple who will control vehicles during construction phase.

+ Installing lights and warning lights in the construction area of Dau Giay flyover

intersection.

- To ensure traffic safety during the construction of superstructure of Dau Giay

flyvoer:

- When the construction of superstructures of Dau Giay flyover need to install

shielding grid layout to prevents material falling to traffic flow below.

- No regrouping construction machineries and equipments on the curent road.

- Stock piles have to set in the construction areas. In the event of a spill sediment or

soil on the existing road will be cleaned immediately.

- Limiting the movement of heavy construction equipment on the roads / lanes used

by the transport during rush hours.

- Drivers and workers need to understand and comply with traffic safety regulation

and prohibit smoking, using drug.

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- Ensure traffic safety when constructing to expand NH no.1 and NH no.20 –

section from km0 to Km1+800:

o Scope of construction entirely is current road that is using and opperating so

contruction contractors should construct fast and complete each segment,

only contructing a haft of current road and remaining a haft for traffic

activities.

o Do not let the construction machineries obscure the vision of the driver of

the vehicle on the road is exploiting.

o Stock piles have to set in the construction areas. In the event of a spill

sediment or soil on the existing road will be cleaned immediately.

o Do not gather material too much along with current road and length of

stockpiles are no longer than 300m. Materials are only at a roadside to not

be parallel to both sides to narrow pavement background.

o To remove all excess material on the road, but have a plan to ensure traffic

safety in case of incidents within the premises assigned to construction.

o Do not allow the widespread material obstructing the flow of traffic and

slippery road surface causing loss of traffic safety and environmental

pollution.

o The arrangement of material at roadside should be warned and fenced.

o Absolutely not putting drainage box culverts along the street in order to

avoid the loss of safety for traffic participants.

o Constructing drainage systems quickly and fully fenced.

Location và time taken

- Location: Dau Giay intersection.

- Time: 18 months of construction.

b. Preventing risk of congestion of the traffic or traffic accidents on Bao Loc city

bypass


General measures:

o The construction contractor must make detail plans for ensuring traffic safety in

the construction phase.

o Announced the construction period and regulations for people and vehicles

crossing at the intersection on the bypass such as: Intersections of bypass with

NH no.20 (Km113+727 và Km128+800 on NH no.20), intersection of NH

no.20 withNH no.55 (Km9+600 on the bypass); intersection the bypass with

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Ngô Tất Tố street (Km0+900), Tô Hiến Thành street (Km3+200), Trần Quang

Khải street (Km11+700), Âu Cơ street (Km12+750), Nguyễn Huy Tưởng street

(Km14+950)...

o The dump pits (soil, waste) are arranged within the clearance of the project and

how the existing road at least 7m. In the event of a spill sediment or soil on the

existing road will be cleaned.

o Driver and worker need to understand and comply with traffic safety regulation

and prohibit smoking, using drug.

- Set warning board, warning fence and light:

o During the process of construction must set construction warning board at

intersection between bypass with NH20, NH55 and streets to ensure traffic

safety.

o The construction contractors will install warning fences, lights at intersection

between bypass with NH20, NH55 and streets.

- Traffic moderators:

The construction contractors arranged transport operators when the mechinaries

arrive and leave the bypass at the intersections that recommended. Traffic

moderators must have knowledge of traffic laws, equiped protective equipments

and instruments fully.

- Construction materials:

o Construction materials don’t gathered at current roadside.

o Remove all excess material on the road and have a plan to ensure traffic

safety in case of incidents within the premises assigned to construction.

o Avoid to spill construction materials which will damage to traffic and

pollute the environment at intersections.


- Location: Intersection between bypass and NH20 (Km113+727, Km128+800

on NH20), NH55 (Km9+600 on the bypass); intersection the bypass with Ngô

Tất Tố street (Km0+900), Tô Hiến Thành street (Km3+200), Trần Quang Khải

street (Km11+700), Âu Cơ street (Km12+750), Nguyễn Huy Tưởng street

(Km14+950).


c.Effective assessment of mitigative measures

The fact that it is difficult to eliminate all of impacts on traffic, especially NH20

has large volumes of vehicles. The measures are based on the content of construction

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activities, current of traffic and level of impact can minimize traffic congestion,

guarantee traffic safety.

The mitigation measures during the construction phase is feasible with the

actual conditions and the possibility of construction contractors. However, making

sure to avoid traffic jams at times the job execution requires traffic organization plan

of the construction company as stipulated in Circular No. 39/2011 / TT-BGTVT

18/05/2011 regulations on the management and protection of infrastructure in road

traffic (chapter VI ensuring traffic safety and traffic during the construction within the

protected infrastructure are road traffic exploited). This plan will be submitted to

authorities to approve by the construction contractors, if it is feasible, the construction

company will be strictly implemented according with the approved plan.

Measures to minimize the impacts from material transport activities proposed

are simple, feasible and highly effective. However, to ensure residual impacts are

acceptable, the project will work with local governments to require the construction

contractor to strictly implement the mitigation measures were approved as well as

measures suitable complement.

The mitigation measures for public utilities are committed to the project. The

progress of the project depends on the implementation of this commitment. The

feasibility of the proposed measures is considered quite high.

4.1.2.9.Waste treatment and management

a. Develop and implement waste management plan during construction


- Developing solid waste management plan: The project will be responsible

for managing waste generated in the construction process in a waste management plan.

The waste management plan (WMP) built for normal waste (construction waste,

domestic solid waste) and waste oil. During the construction phase, the WMP will be

used by the construction contractor as a construction manual for detailed management

procedures and reporting on waste generated and materials used for the project . The

WMP is supervised in the environmental monitoring program.

- Consstruction solid waste management: Waste soil and maxcadam

(estimated 2.605.919,7m3) is stored temporarily at the dump and transported to the

location should be leveled or disposal (position agreed by letters of the local

government).

- Waste grease, oiled rag: Waste grease is collected and stored under the

supervision of trained staff on the management of hazardous wastes at the construction

sites. Oiled rags will be collected and treated in accordance with Circular 36/2015 /

TT-BTNMT 06/30/2015 on hazardous waste management. At each site will set 2

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hazardous waste container with a lid, 200L volumes to collect waste grease during

maintenance of machineríe and hazardous solid waste. Storage areas for hazardous

waste, waste oil are placed in a dry location and background is paved with cement

embankments 5-10cm thick and separated with the surrounding area by small wall.

- Domestic waste management: At each site, near the construction camp will

arrange litter bins to collect garbage; set 2 trash cans with 120L volume at each site

(orange bins for inorganic waste collection, green bin for organic waste collection).

Through economic contracts, the project owner will require the construction contractor

to treat all of municipal waste according to Decree 38/2015/NĐ-CP dated 04/24/2015

on the management of solid waste, and be suitable with local area conditions.

- Domestic waste water management: At each site, sewage and wastewater

from bathroom and kitchen will be pre-treated to not generate polluting sources of

organic matter in natural water sources. Domestic waste water will be directed into

shallow sand tank (about 70cm depth and 10m2 width), to avoid seepage into

groundwater, the bottom layer of sand need to install geotextile layer to collec

domestic waste water after treatment. Treated water will be flowing into the drainage

system of the site. Sand in filtering basin will be replaced every week, after

preliminaty washing it will be treated as contruction solid waste. The construction

contractor will install mobile toilets at each working site.


"Construction waste management plan" will be applied for 18 months of

construction.

- Measures involved “Domestic waste management”, “Waste grease and oiled

waste management” will be implemented in 4 construction site positions in 18

months of construction.

b.Effective assessment of mitigative measures

Developing and implementing waste management plans in the construction of

the project is the commitment and regulations on safety, environmental hygiene and

organize the construction of a transportation project. Therefore, the project will ensure

the implementation of commitments before the state authorities on the local

environment and the content of each make to contractors, as well as content

monitoring for consultation will be taken into bidding terms; under the terms of an

economic contract, the project will carry out inspection measures to require contractors

and supervision consultants to comply with the contract. The feasibility of the

proposed measures, thus guaranteed.

4.1.2.10. Prevent and mitigate the impact due to disposal activities

a. Description of mitigation measures

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a1. For impacts on air quality

Details on measures to minimize the impact on air quality is presented similar

to section 4.1.2.1. For effects by dust and gases arising from transport operations and

disposal soil.

a2. For impacts on ecosystem and soil quality

In order to limit the influences of disposal soil to objects around as residential,

terrestrial ecosystems (shrub) the following measures shall apply:

- Defining scope (width, length dumps) and crank embankment around this

range (crank outer coast) has a height equal to the height leveling ensure the incident

does not burst its banks.

- Compensation for the residual land to residents to ensure enough space during

the process of disposal.

- Inspecting and monitoring the process of disposal, not to spill the soil

surrounding areas where it is not landfill areas.

b. Location và time taken

- Location: The routes of material transport and the disposal areas.


c.Effective assessment of mitigative measures

Measures to mitigate the impact from the disposal activities proposed to be

simple, feasible and highly effective. In order to ensure effective implementation of

these measures, the mitigation measures relating to the construction contractor's

obligation will be recorded in the economic contracts between the project owner and

construction contractors. The project will work with local governments to inspect and

supervise the disposal activities of construction contractors, which comply strictly with

the economy contracts.

4.1.2.11. Preveningt and mitigating the impact on ecosytems along to Bao Loc city

bypass


- The cut trees during construction must comply with design documents and

monitored by authorities, just cut the tree within construction areas ofthe project. Do

not discharge directly solid waste into the ambient environment.

- Limit impacts of stormwater, wastewater and waste grease to water

ecosystems in the project area.

- Solid waste must be collected, managed and treated appropriately to avoid

discharging directly to environment.

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- Hazardous waste must be stored, managed and treated appropriately,

especially for waste oil.

- Preventing soil erosion and spill down to the natural flow in the rainy season.

- The area occupied temporarily need for environmental recovery after the end

of the construction


- Location:

+ Terrestrial ecosystems: Along to the bypass.

+ Aquatic ecosystems:

Natural drain ditches: Km1+068; Km1+313.8; Km1+582.16; Km2+750;

Km3+150; Km3+297; Km3+297 - Km3+934.95; Km4+634.5; Km6+900;

Km7+179 - Km7+772; Km8+094.36; Km9+254; Km9+909.39;

Km10+438.82; Km12+142. 5; Km13+875.5; Km14+782.15;

Natural streams: Km2+154.76; Km4+838.95; Km5+881.3; Km6+378.36;

Km8+500; Km11+165.59 (Minh Rong 2 bridge- Dabrim stream);

Km12+285.77; Km13+241.63;

Dai Binh river (from Km0 – Km11) and Dai Nga (from Km11 to

Km15+363.17) where are receiving the flow of the stream which the bypass

will cut across.

Impacts on water quality of Suoi Tre tourist base and entertainment in Loc Son

ward (Km9+200).

4.1.2.12. Environmental restoration after construction

The restoration work, environmental restoration including: restoration of the

landscape in the area of land that is occupied as temporarily camps, warehouses,

construction sites, clearance streams in building location, leveling in the area dug up ...

So, following the works, the contractor will be required to implement when the project

is completed, including:

Removing all the camps, mobile toilets (if any), collecting waste materials such as

rocks, solidification cement on the construction site, oil storage tanks, removed

machine parts and the barrier materials. Planting back to recover quickly the plant

area which are lost due to the construction process.

Dredging the streams: The contractor shall conduct the demolition, collection and

transportation of the entire construction materials from the project area, off the

flow in the streams, canals, clean steel timber plank, stone falling streams,

irrigation ditches as before.

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Infrastructure restoration: The roads of local and other infrastructures which are

affected by project construction activities will be refunded by the contractor in

accordance with local commitment before handing over to the investor.This is

considered a prerequisite for the investor to certify acceptance and handover works

Environmental restoration in the area of construction: For the road passing through

the area of agricultural land, after completion of construction the contractors will

quickly clean up materials, soil, sand stone, asphalt spilled out of upland farming

return the land to farmers.

The environmental restoration will be carried out immediately by the contractor

after the completion of the construction prior to the inspection of the investor,

government representatives and local people. The strict implementation of

environmental restoration work after construction is a prerequisite and mandatory

for investors to settle the Contractor.

4.1.3. Measures to prevent and mitigate the negative impacts of the project on the

environment during the operation phase

4.1.3.1. Prevent and mitigate the impact related to waste due to the appearance of

lines

a. For dust that generated from vehicles


The aim is to limit dust is emitted from the road during the move of vehicles and will

apply these measures:

- Collection waste on the road: During the operational phase will periodically collect

wastes on the road surface (soil, sand, garbage) by mechanical methods.

- Watering: During dry season, besides measures to collect waste, will water to clean

the road by specialized equipments.


The above-mentioned mitigation measures are implemented along the entire project

within the warranty period.

b. For the impacts of stormwater runoff


Cleaning the surface: clean the road surface with intervals of 10 days / time to collect

dust and waste. Thus, the level of pollution in the first water runoff remains very

small. After the first rains, runoff of rain within 10 days will be no or very little waste.

Location and time taken

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Cleaning the road surface is performed along the project route during the warranty

period.

4.1.3.2. Prevent and mitigate non-waste impacts waste due to the appearance of lines

a. For the impacts of erosion and sedimentation


Regularly check the cleared drains and drainage along the horizontal and vertical

route to avoid flood water seeped into the roadbed and side slope to reduce the

strength of the forces causing the soil erosion and landslides phenomena.

In case of erosion, landslides occur, it is necessary to mobilize the construction

machinery to overcome in time to ensure road traffic.

Regularly check the security of side slope, especially at a time of the rainy season,

reinforcing the damaged section degrading to ensure limited landslide.

Subjects and time taken

Subjects taken:in the portions that are at risk of erosion and sedimentation

Time taken: Every year, especially during the rainy season

b. Safeguards road safety corridors

Agencies use the road under the General Road Administration will coordinate with

local government planning and management measures corridor through measures:

- Planning for land use right at the roadside for residential development, services, etc.

- Checking and resolutely preventing acts of encroachment on road corridor for

housing, illegal shop especially in the residential area and schools.

4.2. Measures to prevent and respond to risks, environmental incidents

4.2.1. Management, prevention and response to technical problems caused a

collapsed building

a. Describing themitigative measures

With the amount of construction of flyover at Dau Giay intersection and bridges on the

Bao Loc city bypass and upgraded a number of bridges on NH no.20 from Km0 to

Km2+00, risk of incidents down and breaking beams are happenning. To ensure

minimizing this incident, the measures are applied and closely examined include:

- Compliance with technical design plan and design the construction of bridges on the

route.

- Compliance with standards and technical regulations in the design, construction,

inspection and testing of bridges.

- Planing to prevent and respond to incidents during the construction phase.

208

b. Location and time taken

- Position taken: At the site where constructing bridges.

- Duration: 18 months of construction.

4.2.2. Prevent fire incident

a. Description of mitigation measures

The aim is to prevent the careless which can cause an explosion in the construction

phase of the project. The following measures will be applied:

Regulation of flammable materials:Petroleum using for construction equipments

will be stored in a isolation separate warehouse, far away from the potential

sources of ignition.These warehouses will are equipped with temperature

monitoring equipment and fire alarm equipment

Arrangement the fire prevention in the building: Arrangement of fire extinguishers,

fire water tanks, oxygen tanks regularly at the school and at petroleum storage

areas. The vehicles, fire protection equipmentswill be inspected, maintained

regularly.

Fire Training: Training, advocacy and building capacity of workers' awareness

about fire safety.

b. Location and time of application

Location of application:Along the route of the Project

Time of application:18 months of construction

4.2.3. Prevention of labor accidents and incidents

a. Description of the mitigation measures

The purpose is to prevent accidents in the construction phase. The following measures

will be applied:

Implementation of regulations on occupational safety:

o The project owner shall establish the regulations on occupational safety during

the construction time.

o Establish and implement the periodically check program for the employees and

workers

o Training and providing information on hygiene, occupational safety

o The workers will be equipped with the equipments necessary for labor protection

o Establish a adequate communication system to ensure the safety during the

implementation of the project.

209

Setting the rescue plan when the accident occurred: The project owner will set a

plan when the labor accidents occur, including rescue teams, rescue organization

and planning (leadership, the implementation process) and determine the required

address to contact in an emergency including hospitals in the project area and the

hospitals of Lam Dong and Dong Nai provinces.


Location of application: Full length of the Project

Time of application: 18 months of construction

4.2.4. Manage, prevent and respond to risks and incidents due to landslides on the

Bao Loc city bypass


With purposes of preventing and responding to incidents caused by slipping and

landslides in the process of construction, the mitigation measures included:

- In the process of constructing the bypass need to cut slope of positive slopes slope;

- Not installing construction equipments below slopes during construction.

- Strictly prohibited workers carried out construction below slopes which are not cut.


Location of application: Bao Loc city bypass, especially section from Km8+00 –

Km15+00


4.2.5. Managing, preventing and responding to risks and incidents due to food

poisoning


Solutions to prevent incidents of food poisoning for workers will make including:

- Food sources which will provide for workers need to know the origin and guaranteed

safety.

- Regularly cleaning worker’s camping site.

- Establishing rules to ensure health and safety for workers in the food and workers

required to comply.


Location of application: At camping sites are Dau Giay intersection and Bao Loc

city bypass.


210

4.3. The plan for implementation of works, measures for environmental

protection

4.3.1. Estimated costs for the implementation of environmental management plan

a. Basis for estimated costs

The norms, unit prices, regulations and applicable policies to the preliminary

estimated budget the construction and operation of the environmental remediation,

environmental management including:

Circular 04/2010 / TT-BXD dated 26 / 5 / 2010 of the Ministry of Construction on

guiding the establishment and management of investment costs of construction.

Circular 33/2007 / TT-BTC dated 9 / 4 / 2007 of the Ministry of Finance on

guiding the implementation of the Value Added Tax Law and the Law on

amending and supplementing a number of articles of the Law on Value Added Tax

Unit estimated construction cost in 2012 (in building section), issued together with

the Decision No. 1091 / QD-BXD dated 26/12/2011 of the Ministry of

Construction.

Unit construction of Dong Nai and Lam Dong province;

Circular 232/2009 / TT-BTC dated 09/12/2009 of the Ministry of Finance on

regulating the amount, mode of collection, management and use of preventive

health costs and expenses in quarantine border

Circular No. 08/2005 / TTLT-BNV-BTC dated 05/1/2005 on guiding the regime

of paid work at night, overtime for officers, servants, employees

Decree No. 182/2013 / ND-CP of the Government dated 11.14.2013 on prescribing

the minimum wage for employees working in enterprises, cooperatives,

cooperative groups, farms, households, individuals and agencies, organizations that

employ workers.

The other current documents of State, Ministry of Transport and the relevant

ministries.

b. Cost reduction measures implemented by the contractor

The cost for the organization, training, communication, procurement and operation of

equipments, labor deployment, management, and environmental remediation (solid

waste containers, hazardous waste ... ) etc ... for the implementation of mitigation

measures within and outside the construction site in accordance with the requirements

of the environmental management Plan and the contract documents and tenders have

been incorporated in the contract of construction. The contractor will be responsible

for research, plan and giving a estimated cost for these activities. It will be one of the

211

criteria for evaluating the capacity of the contractor later also as a basis for assessing

the level of compliance of contractors

Table 4.2.. Cost of environmental managing implementation, monitoring and

supervision

No. Items Cost

(MillionsVND)

1 Implement measures of environmental

managements

- Watering to reduce dust emission 72

- Constructing drainage and holes to trap sediment 20

- Noise barriers at Dau Giay site 50

- Mobile toilets 20

- Waste water treatment 20

- Buying litter bins 5

- Prevent spill of fuel oil 3

2 Environemental monitoring 220

3 Environmental supervision 500

Total 910

4.3.2. Organization of implementing an Environmental Management Plan

A suitable Environmental Management Plan in period of preparation and

constructionphases must have the participation of organizations and stakeholders, with

roles and responsibilities including:

Project Owner: Project Management Unit 7

Agency approving the Environmental Impact Assessment: Ministry of Natural

Resource and Nature

Department of Natural Resources and Environment (DONRE) of Lam Dong

province and the relevant agencies;

Independent Environmental Monitoring Consulting (IEMC);

Construction Supervision Consultant (CSC)/ Environmental Supervision officer

(ES);

Construction contractor;

Safety and Environmental Officer of the Contractor (SEO);

Community supervision committee.

212

Relationships and links between stakeholders in environmental management of the

project is shown in the form below.

Figure 4.1. Diagram of implementation of the environmental management

program

Specific responsibilities of the stakeholders is presented in Table 5.2 below.

Table 4.3. The role and responsibilities of the organizations for environmental

managementin the preparation and construction phases of the project

The role The responsibilities in environmental protection

PMU 7 – the

project owner

Project Management Unit 7 is the organization for managing the

implementation of the project and they will be responsible for

monitoring the implementation of the project, including environmental

Construction site

Env. Unit EU/

Environmental Unit Officer ECO - (PMU 7)

Communical

supervision

Envir. Problems monitoring The mitigation measures /

Needed actions

Supervise of

environmental issues

directin

g

Reportin

g

Directi

ng

Reportin

g

Environmental Supervision officer (ES)

Construction Supervision Consultant

(CSC)

Constructor

Safety and Environmental Officer(SEO)

Independent Environmental Monitoring

Consulting (IEMC)

213


compliance of the project. PMU 7 is responsible for environmental

activities in the period of the project. Specifically, PMU 7 will:

- Responsible for review of EIA and EMP reports prepared by

consultants;

- Prepare, approve and public the environmental management plan

(EMP) as prescribed;

- Overall responsibility for monitoring and evaluating the

implementation of environmental issues;

- Responsibility for the implementation of the EMP report for MOT.

- Organization and appointing the environmental unit that have the

responsibility for the environmental issues of the project;

- Signing a contract with the Contractor and Consultant;

- Providing the funding for monitoring activities in the phases of project;

- Working closely with local authorities about the involvement of the

community during the preparation and implementation of the

project;

- Implementing the monitor and supervise the implementation of the

EMP including the integration of EMP in the design documentation

and technical details in the contract documents and tender; the

program management, monitoring the implementation of the

environmental management measures; updated EMP in technical

design phase

- Ensuring that the environmental management system is shown in

Figure 5.1 is established and responsibilities of stakeholders as

appropriate.

Environmental

Unit (EU)/

Environmental

Unit Officer

ECO -

(belonging to

PMU 7)

To achieve efficiency in the implementation process, PMU 7 will

establish a environment unit (EU) to help solving the environmental

problems of the project. This Environmental Unit is responsible for:

- Assisting PMU 7 for review the EMP that is carried out by the

consultants;

- Assisting PMU 7 integrating the EMP into the details technical design

documentation and in to the contract documents and tender;

- Assisting PMU 7 integrating the responsibility for monitoring and

supervision that has been outline in EMP, in the contract documents and

procurement officer for environmental monitoring and independent

environmental monitoring consultant.

- Providing the relevant data in the process of selecting the

consultants;

- Reviewing of the reports which are submitted by the

Environmental Supervision officer (EMO) and independent

214


environmental monitoring Consultant (IEMC);

- Directly following on the management and monitoring;

- Carrying out the inspection of construction activities to

ensure the construction unit shall be fully implementation of

the responsibility that are specified in the written assignment

related to the mitigation measures environmental impact. In

cases where the provisions are not made, Environmental

Unit is responsible to make a direct report to the PMU HCM,

who have the right to suspend the work of the construction

unit.

- Advising for the leadership of PMU 7 about the solutions for

environmental issues of the project.

Construction

Supervision

Consultant

(CSC)/

Environmental

Supervision

officer (ES)

- Construction Supervision Consultant (CSC) will be

responsible for the general supervision of construction

activities and ensuring the contractor to perform the

requirements and technical specifications in the contract.

Environmental Supervision officer (ES) is in the group of

construction supervision consultant (CSC), who will be

responsible for the supervision and monitoring of

construction activities and ensuring the contractors to

perform the requirements writen in agreement with the

project owner, in the approved EIA report and in the

environmental management Plan (EMP)

- Environmental Supervision officer (ES) includes a number

of Environmental Engineer with adequate knowledge in the

field of environmental protection having the responsibilities

to implement the requirements and to monitor the

environmental implementation in the construction activities

of the Contractor.

- Directly informing to the construction units of any potential

environmental problems that may hinder the progress of the

project.

- Supervising the implementation of the mitigation measures

of the contractor, promptly propose and implement

interventions to improve these additional mitigation

measures to meet the requirements of environmental

protection.

- Planning to prevent and respond to environmental problems

and emergencies that may occur during the construction.

- Proposing to the PMU 7 to suspend a part or all of the

construction works if the contractor does not meet the

215


requirements of safety and environmental protection that are

agreed or specified in the contract.

- Making the periodic reports.

Independent

Environmental

Monitoring

Consulting

(IEMC)

- Support for PMU 7 within the contract to set up and operate

the environmental management system, to make

recommendations to adjust and improve the capacity of

stakeholders in the process of implementing and monitoring

the EMP implementation of contractors in the phase of

project

- Conduct periodic environmental monitoring.

- Directly reporting the monitoring results to the

environmental unit.

- Performing additional measurements as required.

Construction

contractor

- On the basis of the approved environmental management

plan, the Contractor shall be responsible for the construction

environmental management plan for each area of are

construction plans, to submit to the PMU 7 and ES for

review and approval before starting. In addition, the

contractor should have been full of paperwork license

application (control and traffic management, road train,

safety, etc.) prior to construction works in accordance with

the provisions current

- The contractor will assign the qualified individual as safety

and environment officer (SEO) at the construction site, who

having responsibility for supervision the contractor's

compliance with the requirements of the EMP and the

environmental technical instructions.

- To be responsible for the full implementation of

environmental protection measures that is outlined in the

contract with the project owner, the approved EIA report and

the Environmental Management Plan (EMP).

- Under the management of environmental monitoring officer

to adjust or enhance the mitigation measures when is

required by the environmental monitoring Officer or

environmental Unit.

Ministry of

Transportation

(MOT)

- Perform or can assign a specialized agency of environmental

protection for the implementation of activities: i) To examine

and certify the implementation of mitigation measures to

protect the environment during the operation phase of the

project; ii) To check the implementation of environmental

protection measures in the preparation phase of investment

216


and construction phases of the project in case of need.

- To make detailed guidance on operational checking and

certifying the implementation of the environmental

protection measures to serve the operational phase of the

project; to create and issue the specialized technique

guidelines to support checking activities, validation works,

environmental protection measures to serve the operational

phase of the project.

Department of

Natural

Resources and

Environment

(DONRE) of

Lam Dong and

Dong Nai

province

On behalf of the provincial government on the management of the

environment, the Department of Natural Resources and Environment

will be responsible for the following:

- Checking the implementation of the EMP;

- Enforcement of laws, regulations and standards;

- Coordinate with relevant departments of environmental

protection;

- Inspection and supervision of construction, completion

and operation of the environmental protection works.

Local

Communities

(governments,

non-

governmental

organizations

…)

Supervise the investment of the local communities is a voluntary

activity of the population living in communes / wards under Decision

No. 80/2005 / QD-TTg and other legislation, in order to:

- Monitoring and evaluating the implementation of the

provisions of the investment management of the authority

competent to decide on investment, investors, project

management, contractors and project construction unit

during investments (including environmental aspects);

- Detecting and proposing to the authorized state agency for

the violation of the regulations on investment management

(including environmental aspects); for timely prevention and

treatment of illegal works, wasting, loss of capital and state

property, harm the interests of the community.

217

CHAPTER V. THE ENVIRONMENTAL MANAGEMENT AND

MONITORING PROGRAM

5.1. Environmental Management Program

5.1.1. Proposes

The goals of the environmental management program of the project is to work

out a program to manage the problems of environmental protection in the preparation

phase, construction phase and during the operation phase, including:

Providing a management plan to implement the measures to minimize the

environmental impacts which are approved by environmental management agency

and is converted to the terms of the technical specifications of the project.

Ensuring proper management of waste, the given structure is responsive to issues

and environmental incidents and emergency management and solve the

environmental problems.

Giving descriptions of the measurement, continuously collect information about the

change in environmental quality during the project implementation, to detect

additional negative impacts on the environment and propose the measures to

prevent and reduce the environmental pollution in accordance with Vietnam

standards of 2001, 2002; Vietnam regulations of 2008 ÷ 2013.

Giving description, identify the roles and responsibilities of environmental and

social management organisation of the project.

The information obtained in the environmental management programe of the

Project must ensure the following basic properties:

Accuracy of Data: Accuracy of monitoring data was assessed by the ability of

similarity between the data and the reality.

Characteristic properties of the data: The data collected at a monitoring point

must be represent for a certain space.

Homogeneity of data: The data collected at different locations on the different

times of the Project area has the ability to compare with each other. The

comparability of the data is called the homogeneity of the data

The ability to continuously monitor over the time: To comply with

environmental monitoring programs which were identified during the project

implementation.

Uniformity of data: The data include sufficient information about itself factors

and other related factors.

218

5.1.2. Summary of the environmental management program

The environmental management program of the project are summarized in

Table no. 5.1:

219

Table 5.1. Summary of the environmental management program

Operation

phases of the

Project Operations of the

Project

The environmental

impacts

The works, environmental

protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

Pre

pa

rati

on

ph

ase

Appropriation of

cultivated land

- Reduce the area of

cultivated land and

crop productivity.

- Decrease or loss

of income.

- Making plans for land acquisition

and resettlement overall the laws of

Vietnam.

- Supporting to stablize life , train and

livelihood change.

Total cost for

site clearance

work is included

in the total

investment cost

Completed

before the

project goes

into

construction.

District Council of the

site clearance

compensation

The

independent

supervision

organization

Appropriation of

housing area and

destroyed house

- Economic disruption.

- Affecting to society

such as: community

relations, psychology

- Compensation for houses and other

structures.

-Supporting to rebuild houses, other

structures and move..

- Resettlement for households who

are moved to different residential

area.

Total cost for

site clearance

work is included

in the total

investment cost

Completed

before the

project goes

into

construction.

District Council of the

site clearance

compensation

The

independent

supervision

organization

Clearance and

leveling the

ground to create

space

Contamination by dust

beyond the allowable

limits from 1.5 ÷ 2

times and ecosystems.

Spraying water for moisten in the

area at least 02 times / day.

Moistening water is taken from the

tank of the water wagon.

Total cost for

site clearance

work is included

in the total

investment cost

During the

first months of

leveling in the

construction

site.

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

220

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

Noise pollution affects

to the residential areas

Performing the following measures:

- To limit the demolition and

material handling at night from

22 pm to 6 am;

- To limit the simultaneous

operation of equipments.

Total cost for

site clearance

work is included

in the total

investment cost

During the first

months of

leveling in the

construction

site.

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Impacts on landscape

and environment by

arising wastes

(concrete, brick ...) and

wood, branches,

leaves.

Performing the following measures:

- To collect, classify and

appropriate treatment;

- Classification and recover the

timber.

Total cost for

site clearance

work is included

in the total

investment cost

Completed

after 15 days

from the end of

the leveling.

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Construct-

ion phase

For the air environment quality

Excavating the

roadbed (to

renovate or

expand the road

works by

mechanical

means).

Contamination by dust

levels exceed

permissible limit of 1.1

times and 2.9 times in

the dry season and

rainy season

respectively.

For Dust emissions:

- The storage location of the rock

types must put away from the

sensitive objects at least 100 m

and to be surrounded by earth

embankments and must be

covered or moistened their

Total cost for

site clearance

work is included

in the total

investment cost.

12 months

construction

of the

background

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

221

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

Dust pollution affect

residential areas along

the route, and other

subjects such as

schools, the

committees ... and

terrestrial ecosystems

including crops such as

cashew, rubber ...

surface by water.

- Re-vegetable all disturbed areas

as soon as practically.

- Watering during the day without

rain;

- The machines and construction

equipments must ensure the

emission standards: in accordant

with “Decision No 249/2005 /

QD - TTg dated 10/10/2005 of

the Prime Minister on the

prescribed schedule applicable

emission standards for motor

vehicles”;

- To make moist the surface of

materials and soil types before

transporting.;

- The transportation vehicles must

have a lid to cover the material;

- To limit the transport of rock

Material and

solid waste

transport

activities

Dust pollution that

affect the residential

areas along the

transport routes and

traffic participants.

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

222

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

types on the local roads during

the period from 6 8h; 11 12h,

13 14h and 16 18h.

- Limit vehicle speed to 35km/h

for all vehicles traveling on

unpaved roads.

- Monitoring of dust and

implementing in compliance with

the mitigation measures,

environmental protection of the

contractors.

For gases emission from

vehicles:

- The machines and construction

equipments must ensure the

emission standards: in accordant

with “Decision No 249/2005 / QD

- TTg dated 10/10/2005 of the

Prime Minister on the prescribed

schedule applicable emission

223

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

standards for motor vehicles”;

- Maintain all vehicles and

machinery.

- Investigating and implementing

initiatives such as cleaner fule,

efficient combustion and catalytic

converters.

Impact of noise

Operation of the

construction

equipments

- Residential areas

are affected by

noise pollution

levels that exceed

permissible limits

from 4.2 to

15,8dBA.

- The other sensitive

subjects such as

schools, parishes,

committees are

- The layout of machineriesmaking

noise in a suitable location such

that noise to the sensitive objects

is not greater than the allowable

limit under the Viet Nam

regulation 26: 2010 / BTNMT

- Turn off equipments when not

needed to minimize the

cumulative noise level;

- All of the equipments and

machinery in the construction

Total cost for

site clearance

work is included

in the total

investment cost.

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

224

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

affected by noise

with noise levels

exceeding the

permitted limit of

2.1 ÷ 18,8dBA

site will be checked every 3

months for noise levels and make

the repairs and necessary

adjustments to ensure the safe

and does not cause noise excess

the standard;

- Limiting the machinery operation

in the same time to reduce noise

level accumulation;

- Informing sensitive receptor of

noisy activities undertaken

outside of normal working hours;

- Assessing and managing all noise

complains;

- Noise level monitoring.

Impacts on the traffic

Activity of

construction

equipments

Activities affecting the

traffic on existing

Highway 20

- Construction of the old lane only

when the new road has been

completed, ensuring the safety of

vehicles;

Total cost for

site clearance

work is included

in the total

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

225

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

- Preventing the state fell, pouring

during the construction of the

Dau Giau flyover down the road;

- Compliance with Circular No.

39/2011 / TT-BGTVT dated

18/05/2011 regulations on the

management and protection of

infrastructure road;

- Do not set the construction

machinery of the project on the

existing road;

- The temporary dump of

construction material, waste are

arranged within the clearance

area of the project.

- The driver of the project and the

construction workers must

understand and comply with the

regulations on traffic safety and

not drinking and using the drug;

investment cost.

Activities affecting the

travel of people who is

living along the street

(and obstructing the

traffic, accidents due to

the height difference of

the Highway 20 and

other crossing roads).

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

226

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

- Put roadworks signs, limit speed

of 5km / h in the first 2 lines and

the need to assign a person to

regulate the traffic;

- Regularly clean the dust and mud

on the road;

- Appropriately plan movement of

construction vehicles;

- Before contructing flyover

necessarily to install metal tole

fence to prevent site area and

current road, lay protective net to

avoid material fall in to road

during construction of

superstructures;

- Limiting the movement of heavy

vehicles on roads/lanes using by

vehicles during rush hour;

- Traffic Guidance.

Activity of Damage the - For the provincial roads: Total cost for 18 months of The contractor, PMU 7 and

227

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

material

transportation,

soil waste of

heavy trucks on

local roads.

community facilities

due to transportation

of the specified load

on the low-level

route.

- Do not transport more than the

allowed speed and load;

- Cleaning: All types of spillage

waste will be cleaned;

- When using communal rural roads

to transport:

- Agreement with Local: Getting the

consent in writing with the local

authorities to use of temporary

communal or inter-village roads

for material and disposal waste

transportation purposes.

- Organizing reasonable

transportation: No transporting

materials and disposal waste in the

crowded times and the holidays.

The project owner has a

responsibility to find out about this

times and commitment to avoid

transporting at this times with the

site clearance

work is included

in the total

investment cost

the

construction

under the contract

with the project

owner (PMU 7)

environmental

supervision

consultancy.

228

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

local authorities.

- Implementation of sanitary and

revert to the original state

measures: Ensuring the hygiene

and safety conditions in the use

and maintenance of roads, ensuring

people go back to normal, safeand

restored to its original state as

before handed over to the local

authorities.

Impacts on the surface water and soil

Construction of

slope

The risk of water

pollution due to

erosion, sliding slope

For surface water:

- The Construction works will be

arranged so that the surface area of

excavation is minimal during

periods of high rainfall (rainy

season).

- Checking of mud flow when

rainning will be checked regularly,

particularly in areas adjacent to the

Total cost for

site clearance

work is included

in the total

investment cost

12 months

construction

of earthworks.

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Roadbed

earthworks

construction and

construction of

The risk of the spillage

of soil and sediment

erosion.

Total cost for

site clearance

work is included

in the total

12 months

construction

of earthworks.

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

229

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

drainage system. slope;

- After finishing the lower slope, it

should always conduct a trenching

along the vertical drainage to

ensure clearance and soil types

during the excavation platform to

ensures the negative slope surface

for water drainage when it rains;

- Ensuring the construction

materials and soil do not bury the

drainage system in the construction

area;

- Cleaning the surface: Collecting

the dirt on the surface to prevent

contamination of around water

sources;

- Checking the operation of the

horizontal drain;

- Correctly storing hazardous

materials as outlined in section;

investment cost

Digging up the

roadbed and

temporary dump

pits

The risk of local

flooding

Total cost for

site clearance

work is included

in the total

investment cost

12 months

construction

of earthworks

(specially in

rainning

seasons).

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Activities in the

construction sites

The risk of spills the

dirt from the surface of

the construction site.

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

230

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

- Providing adequate sanitation.

For soil environment:

- Collection and transportation of

disposal rock to the backfill

positions;

- Cleaning up the spilled lands.

- Executing quick items, especially

in the rainy season;

- The surface of the construction site

will be spread a layer of crushed

stone, this crushed stone will not

only reduces the surface dust but

also have capable of filtration of

dirt from surfaces when it is

rainning.

- Stockpile soils in close proximity

to areas to be rehabilitated;

- Implement measures to limit wind

and water erosion of soil stockpil:

+ Re-vegetation;

231

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

+ Covering stockpiles with shade

netting.

- Surrounding stockpile with a

geotextile fence (Where

required).

Management of waste

Excavation and

embankment

the roadbed

Disposal rocks with

estimated of 2 million

m3.

- Developing the waste management

plan;

- Disposal rocks is temporarily

stored in the dumps and

transported to the disposal

location;

- Management of waste oil, oily

rags: Oil and grease is collected

and stored under the guidance of

trained staff on the management of

hazardous waste at the

construction site. Oil waste will be

collected and handled according to

Circular 36/2015/TT-BTNMT

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy. Operation of

maintenance and

repair of

construction

equipments

waste oil, oily rags

Activities of

worker camps

The amount of

municipal waste

generated is about

43.200kg. This

garbage will create the

habitat for wildlife and

232

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

insect which will make

disease increases and

the risk of infection.

dated 30/6/2015 on the

management of hazardous waste.

At each construction site, there

will allocate 2 hazardous waste

container.

- Waste management and municipal

waste: In each construction site,

the area near the worker camp will

arrange to collect the garbage

trash; the number of bins are

arranged as two barrels with a

capacity of 120L / barrel at each

construction site (orange bins for

inorganic waste collection, green

bins for organic waste collection).

Via the economic contract, the

project owner will require the

contractor to handle all kinds of

wastes in accordance with Decree

no. 38/2015/NĐ-CP.

- Wastewater management from

Generated wastewater

is about 2.8m3 per day

per construction site.

Waste water

penetration into the

soil around the site.

233

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

worker camps: At each

construction site, sewage and

waste water from domestic will be

pre-treated to not produce the

pollution of organic matter in

natural water sources. There will

be sand settling tank and mobile

toilets at the construction site;

- Separating hazardous and non

hazardous waste streams;

- Designating areas for the safe

storage of hazardous watste;

- Separating waste into recyclable

and non – recyclable streams;

- Reusing inert construction waste

(such as excavated subsoil and

building rubble) as backfilling;

- Safety disposing of non-recyclable

wastes;

- Training all staffs on the waste

234

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

management procedure;

- Assigning staff responsible for the

implementation of the waste;

- Recording waste removed from

site, obtain and keep the

appropriate documentation such as

safe disposal cerfiticates;

- Confirming that hazardous waste

transporters are appropriately

licensed;

- Conducting inspections of waste

storage areas.

Hazardous materials and waste management

Maintain and

repair

construction

machinery

- Oily rags and waste

grease, fuel oil;

- Waste water contains

waste grease, fuel oil.

- Exploring opportunities to use

non-hazardous material in place

of hazardous materials;

- Summarize hazards presented by

chemical by means of a Material

safety data Sheet;

- Separate hazardous and non

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

235

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

hazardous waste streams when

collecting and storing;

- Prevent the uncontrolled releases

of hazardous materials;

- Designate areas for the safe

storage of general waste;

- Prioritize the allocation of

resources for emergency

response equipment and training

programs;

- Establish hazardous materials

management priorities based on a

hazard analysis of the risk

presented by the material;

- Implement management controls

to address residual risks that have

not been prevented or controlled

through engineering measures.

- Establish the level of risk of

hazardous material through an on

Constructing

flyover

Fuel oil and grease

Hot mixing

asphalt plants

Asphalt, fuel oil

236

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

- going asessment process;

- Develop a hazardous materials

management plan;

- Train all staff on the hazardous

materials management plan;

- Conduct inspections of

hazardous materials storage

areas.

Economic – social problems

Focusing

workers

Transmitted diseases,

HIV / AIDS due to

poor sanitary

conditions.

Managing workers:

- Project will provide the conditions

in such camps, water, electricity to

ensure the living workers in camps

in the construction site;

- Signing up a temporary residence

for workers;

- Educating the construction

workers to respect the cultural,

religious beliefs of the local

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Arising conflicts,

regional security due

to behavior,

communication.

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

237

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

people;

- Prohibiting gambling and alcohol

in the construction site and making

the schedule (hours and breaks) for

the workers;

Cooperation with local authorities:

- Coordinate with local authorities,

including the Vietnam Fatherland

Front Committee and the Women's

Union with the aim of promoting

workers' understanding of the

social ills, prostitution, and HIV

epidemics in the region...;

- Coordinate and cooperate closely

with the local community as well

as hygiene and disease symptoms

appear in the region;

- Coordinate and cooperate with

local authorities in preventing and

combating social ills;

238

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

Local employers:

- Using of unskilled workers, both

men and women in local to do the

basic works.

Construction

activities

Economic benefit

loss due to services

interruption

- New services to be installed prior

to the decommissioning of the

existing services

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Traffic disruption - Contruct additional lanes to

either side of the existing road

before excavating and

reconstructiong existing road

surfaces;

- Appropriately plan movement of

construction vehicles;

- Where required, allocate people

to direct traffic in areas where

construction is taking place.

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Impacts of disposal operations

239

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

Hoạt động đổ

thải

Dust affect the

residential area near

the waste area and


(crops such as

cashew, papaya)

- Limiting the transport of

materials and soil waste during

the day time through the central

area (market and commercial

area) of the main road through

communes or wards;

- Wettingthe road for material and

soil waste transportationthrough

the residential area of the

commune in the hot dry days;

- Spraying water in the day without

rain.

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

Soil erosion and

spilled into the

surrounding area

affect the growth of


(cashew, papaya) and

causing the buried

agricultural land.

- Xác định phạm vi và đắp bờ quây

xung quanh phạm vi này (bờ quây

ngoài) có chiểu cao bằng chiều cao

san nền đảm bảo chắc chắn không

xảy ra sự cố vỡ bờ;

- Compensation for the remaining

land for the local people to ensure

the space during the disposal

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

240

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

process;

- Inspection and monitoring

processes disposal, not to spill the

soil surrounding areas not covered

disposal.

Vận hành Impact on environment by forming bypass

The presence of

roads and

construction

works

Erosion on exposed

surfaces of positive

slopes

- Regularly check the cleared drains

and drainage along the horizontal

and vertical route to avoid flood

water seeped into the roadbed and

side slope to reduce the strength of

the forces causing the soil erosion

and landslides phenomena;

- In case of erosion, landslides

occur, it is necessary to mobilize

the construction machinery to

overcome in time to ensure road

traffic;

- Regularly check the security of

side slope, especially at a time of

Total cost for

site clearance

work is included

in the total

investment cost

Every year,

especially

during the

rainy seasons

Project operating

unit

-

241

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

the rainy season, reinforcing the

damaged section degrading to

ensure limited landslide.

Stormwater runoff

dragging dirt into the

lower area (canals ...)

Vệ sinh mặt đường với khoảng thời

gian 10 ngày/lần để thu gom bụi, đất

bẩn.

Total cost for

site clearance

work is included

in the total

investment cost

During the

warranty

period (1 year)

Project operating

unit PMU 7 and

environmental

supervision

consultancy.

Operation of

vehicles

Dust entrained tires

operation of vehicles

on the road exceeds the

allowed limit of 1.1

times.

- Thu gom chất bẩn trên đường:

Định kỳ thu gom các loại chất bẩn

trên bề mặt đường (đất, cát, rác)

bằng phương pháp cơ học;

- Phun nước: Trong thời kỳ khô

nắng kéo dài, ngoài biện pháp thu

gom chất bẩn, sẽ tiến hành phun

nước rửa đường bằng thiết bị

chuyên dụng.

Total cost for

site clearance

work is included

in the total

investment cost

During the

warranty

period (1 year)

Project operating

unit PMU 7 and

environmental

supervision

consultancy.

Environmental incidents

242

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

- Construction

activities

Incidents caused by

floods, flash floods

- When having signs of flooding

(rain, rapidly rising water) which

may cause the floods and flash

floods, it is quickly required to

move the all of the construction

machines out of construction site

to a higher area. Thefirst is for

petroleum, chemicals and fuel

transport, and then is machinery

transport;

- There are plans to response to the

flooding and flash flooding.

Specifically, it will arrange in

advance the place of where the

goods and materials when moving;

- Regularly check the

meteorological information for

having timely response plan;

- Regular contact with the unit who

is capable of rescue teams such as

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

243

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

police and coordinate with the

local authorities.

- Petroleum

storage and

operation

construction of

workers

Fire incidents - Regulations on storage of

flammable materials: Gasoline

used for construction equipments

and mahines will be stored in a

separate isolation warehouse, far

away from the potential sources

of ignition, the warehouses are

equipped with temperature

monitoring equipments and fire

alarm equipments.

- Arrangement of fire prevention

equipments in the construction

site: Arrangement of fire

extinguishers, fire water tanks,

oxygen tanks regularly at

construction site and at the

petroleum storage areas. The

vehicles, fire protection

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

244

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

equipments will be regularly

inspected and maintained.

- Fire Training: Training,

advocacy and capacity building

of human awareness about the

fire safety

- Construction

activities

The labor accidents Implementation of regulations on

occupational safety:

- The project owner will establish

the regulations on occupational

safety during the construction;

- Establish and implement the

periodically check programs for

employees and workers;

- Training and providing

information on hygiene,

occupational safety;

- The workerswill be equipped

with the equipmentsthat are

necessary for labor protection;

Total cost for

site clearance

work is included

in the total

investment cost

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

245

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

- Establishing an adequate

communication system to ensure

the safety during the

implementation of the project.

Setting up the plans when the

accidents happened:

- The project owner will establish

the rescue plan when labor

accidents occur, including rescue

teams, rescue organizations and

its plans;

- Determining the required address

to contact in an emergency

including hospitals in the project

area and the hospitals of Binh

Phuoc Province.

- Activities of

workers

The forest firing

incidents

- Application of preventive fire

incident measures asmentioned

aboved;

- It is strictly forbidden to smoke and

Total cost for

site clearance

work is included

in the total

18 months of

the

construction

The contractor,

under the contract

with the project

owner (PMU 7)

PMU 7 and

environmental

supervision

consultancy.

246

Operation

phases of the


Project

The environmental

impacts


protection measures

The funding of

works,

environmental

protection

measures

Time to

implement and

complete

Responsibility for

implementation

Responsibility

for the

Supervision

1 2 3 4 5 6 7 8

carry inflammable substances to the

neighboring of forest;

- Rescuing incidents: the rescue

organizations must be timelyin case

of the incidents, including

collaboration with the army and local

authorities.

investment cost

- Construction

activities

Mine incidents - The mine detection will be done

in and around the construction

areas;

- The work specializing in

handling explosive materials will

be done by the defense unit for

the safety reason.

Total cost for

site clearance

work is included

in the total

investment cost

Before

handing over

the work site

for the

construction

contractors

The contractor which

are specializing in

handling explosives

who have the

economic contract

with the project

owner.

PMU 7

247

5.1.3.The category of management

These categories of environmental management including:

Managing the preparation, construction and operation;

Planning of safety in the construction work;

Managing of materials, construction equipment and warehouses, wharves;

Planning and construction progress of the works;

Management of mechanical construction;

Management of Waste;

Managing the implementation of mitigation measures;

Management plans to prevent and respond to incidents; and the

Management of safety in construction phase.

5.2. Environmental Monitoring Program

5.2.1. Objectives

Environmental monitoring program is used to ensure that any impact of the

project including the predicted effects in chapter 3 and also identified additional

impacts during the construction will be controlled. The feasibility of the mitigation

measures will be strengthened and the complaining of everyone will be addressed

effectively. Objectives of the program include:

Determining the true scale of the impact;

Controling the impacts arising during the construction of the project that has been

provided in the EIA Report;

Checking the applicable environmental standards for the project during the

construction;

Checking and monitoring the implementation of environmental protection

measures in the construction phase based on the EIA report;

Providing the mitigation measures in case of impact that is not predicted before;

Recommendations for project owners, in collaboration with environmental

organizations to resolving the outstanding issues related to environmental

protection in the scope of the project;

To assess the effectiveness of mitigation measures in the pre-construction,

construction and operation phases of the project;

248

5.2.2. The basis of environmental quality monitoring

Environmental quality monitoring in the project area is in compliance with the

provisions of Laws and the following technical conditions:

Environmental Protection Law in 2014, the legal documents related to the

Environmental Impact Assessment of the project;

Circular 28/2011 / TT-BTNMT on prescribing the technical procedures for ambient

air and noise environmental monitoring;

Circular No. 29/2011 / TT-BTNMT on regulations of technical process of in land

surface water environmental monitoring;

Circular 33/2011 / TT-BTNMT dated 01 / 08 / 2011 of the Ministry of Natural

Resources and Environment on regulating the technical procedures of soil

environmental monitoring.

Viet Nam technical standards on environmental quality from 2008 to 2015;

Environmental pollution forecasting under the EIA report;

Environmental Quality Status of Project Area.

5.2.3. Content of environmental monitoring program

5.2.3.1. Waste management

a. Principles for monitoring position selection

The position of environmental quality monitoring are selected based on

positions carried out measurements, environmental quality survey during project

foundation, as well as in sensitive positions are defined as objects are affected by the

project in the construction phase.

b. Categories environmental monitoring, including:

Environmental air quality: the tasks of ambient air quality monitoring is:

Monitoring the concentrations of air pollution in the construction area and

surrounding the residential areas that are affected by the project;

Monitoring of the meteorological parameters which are affecting the

dispersion of pollutants;

Review and forecast an increase in load of air pollutants from the

operation of the project to have the additional mitigation measures.

Noise level: the tasks of monitoring the noise is:

Monitoring the concentrations of noise pollution in the construction area and


249

Reviewing and forecasting an increase in load of noiselevels from the operation

of theproject to have the additional mitigation measures.

Vibration: the tasks of monitoring vibration is:

Monitoring the concentrations of vibration pollution in the construction area and


Reviewing and forecasting an increase in load of vibrationlevels from the


Water quality: The tasks monitoring water quality is:

Monitoring the concentrations of water quality in the construction area and


Reviewing and forecasting an increase in load of water quality from the


Soil quality: the tasks of monitoring the of soil quality is:

Monitoring the concentrations of soil quality in the construction area and


Reviewing and forecasting an increase in load of soil quality from the operation

of the project to have the additional mitigation measures.

- Other Monitoring: Monitoring of factors such as erosion, sliding, falling debris, local

flooding, waste dumping, environmental protection in the waste area, environmental

monitoring of construction sites…

c. Categories of monitoring

The Independent Environmental Monitoring and Consulting an (IEMC) will

perform a periodic monitoring with sampling and laboratory analysis as shown in the

following table:

Table 5.4. The requirement of the environmental monitoring

No. Monitoring items Construction phase

I Air quality

1 Monitoring parameters Microclimate parameters (Temperature,

humidity, air pressure, windy velocity,

windi direction) TSP.

2 Monitoring frequency 1 monitoring time for every 3 month

01 locations per day,

8 sample per day

3 Monitoring positions 4 position

250

No. Monitoring items Construction phase

4 Standards for reference QCVN 05:2013/ BTNMT

II Noise and vibration

1 Monitoring parameters Noise (Leq), Vibration (Laeq)


01 location per day, 16 times per day,

3 samples per time

3 Monitoring positions 4 positions

4 Standards for reference QCVN 26:2010/ BTNMT (noise) và

QCVN 27:2010/BTNMT (vibration)

III Surface water

1 Monitoring parameters pH, turbidity, DO, COD, BOD5, TSS,

NH4+, NO2

- ,NO3-, PO4

3-, Cu, Cd, Hg,

As, total Coliform, oil and grease.


01 location per day 1 time per day

3 Monitoring positions 1 position

4 Standards for reference QCVN 08-MT:2015/BTNMT

IV Domestic waste water

1 Monitoring parameters pH, turbidity, BOD5, TSS, NH4+, NO3

-,

PO43-, total Coliform, oil and grease,

Surface active agent.



3 Monitoring positions 2 positions


V Soil quality

1 Monitoring parameters Cu, Pb, Zn, Cd, As



3 Monitoring positions 2 positions at stockpile and disposal area


251

5.2.3.1. Other monitorings

Monitoring Traffic Safety

- Contents: Monitoring measures to ensure traffic safety in accordance with the

mitigation measures have been proposed in Chapter 4 of this report and the provisions

of relevant laws.

- Positions: Residential area, road intersection on the Bao Loc bypass, Dau Giay

intersection.

- The responsible for monitoring: PMU7, investor, independent consultants.

Monitoring prevention of fire and explosion

Contents: Supervision of regulation manuals, technical equipments to prevent

fire at the site during the construction phase.

- Positions: Camping area, fuel storage areas, gathering position for

machineries.


Monitoring labor safety

- Contents: Supervising safety at the site, monitoring items include: Manual of

safety, protective equipments, diaries of safety at the site.

- Positions: Construction areas, fuel storage areas, gathering position for

machineries.


Monitoring landside, sedimentation and spill

- Contents: Supervising landside, sedimentation and spill of embankment

material and solid waste along Bao Loc bypass during the construction phase.

- Positions: Residential areas are lower designed roadbed, agricultural areas.


252

Figure 5.1: Map of environmental monitoring positions

Notes: : Air, noise level and vibration level sampling locations;

: Surface water sampling locations;

: Soil water sampling locations;

: Domestic waste water sampling locations.

Nút giao Dầu Giây

253

CHAPTER 6. COMMUNITY CONSULTATION

6.1. Sumarize the process of community consultation

6.1.1. Sumarize the process of consulting commune peopple’s committee

- Compliance with the Environmental Protection Law version 2014, the Project

owner - Project Management Unit 7 has sent a letter No. 285 /BQLDA7-KTKH dated

26.01.2015 on the implementation of community consultation in the process of

preparing the EIA report of additional investments Dau Giay junction and the National

road No 20 (by-pass of Bao Loc city) belonging to the project on rehabilitation and

improvement National road No. 20 (Km0-km 123 + 105.17) to People's Committees of

Loc Tien, Loc Nga, Loc Chau commune and B’Lao, Loc Son ward which are involved

to inform the issue notices of the basic content of the project, the project's adverse

impact on the environment, measures to minimize the negative impacts. This report

also propose agencies and organizations for their comments in writing.

- Project Owner has received the full text of the response of agencies and

organizations such community consultation. These documents are copied and attached

at Annex - CommunityConsultation.

6.1.2. Sumarize the process of consulting communities

Representatives of PMU 7 in coordination with the commune/ward people’s

committee in the project area organize meetings and consultation of relevant

organizations, local people about the content of the project, the negative impact on the

environment that related to project activities and proposed mitigation measures in

February and April in 2015, including the participation of local environmental

consultat and social consultant.

6.2. Result of community consultation

6.2.1. Opinion consultation of communes and wards people’s committee

The local People's Committee has received the written No. 285 / BQLDA7-

KTKH dated of 01.26.2015 of the Project Management 7 informing of major

investments, environmental issues, environmental protection measures of the project.

Based on the research of this notice, the relevant documents (and general opinion

dialogue between project owners with the leaders and local officials), the local

People's Committee of Project with comments in writing had sent to the project owner.

Summary of these comments of people's committees of communes and wards are

presented in Table 6.1.

254

Table 6.1. Consulted comments of People's Committees of communes and wards

Communes

and wards

Consulted comments of People's Committees in the communes and

wards

The adverse

impact of the

project to the

natural

environment

and society

Solutions and

measures to mitigate

the adverse impacts of

the project to the

natural environment

and society

Recommendations for the

project owners

Lộc Tiến

ward

Agreed with the

negative impacts

mentioned in the

EIA report in the

construction

phase

Agreed with the

measures mentioned in

the EIA report in the

construction phase

In the construction phase, the

project owners have to fully

implement the provisions of

the Environmental protection.

B’Lao ward The

implementation

of the project will

has affects on the

environment.

Requested the project

owners to implement

the measures to

minimize the impacts

on the environment.

The project owners have to

fully implement the

provisions of the

Environmental protection in

the construction and

operation phases

Lộc Nga

commune

Recommended to

finish the

construction or

speeding up

construction time,

no longer

undermine that

will obstruct the

activities of the

local people.

Implementation of

measures as mentioned

in part 1 and part 3 in

the report of

environmental impact

assessment

Required the project owners

and the construction units

often coordinate with other

agencies and local

governments to solve the

problems that arising in the

People's.

Lộc Châu

commune

Recommended to

finish the

construction or

speeding up

construction time,

no longer

undermine that

will obstruct the

activities of the

local people.

Recommended to have

successive construction

method.

Recommended to have

successive construction

method.

Bàu Hàm 2 Agreed with the Agreed with the report Subscribed to the local

255

6.2.2.Opinion consultation of communities

People’s Committee of the communes, wards received letter no. 285/BQLDA7-

KTKH date 26/01/2015 of PMU7 informed of the main investment categories, the

environmental problems, the mitigation measures. On the basis of examning letter and

environmental impact assessment reports that is attached, the people’s committee of

commune and wards held meetings with the participation of the parties include:

Representatives of PMU, local environmental consultant, officials of communes and

wards, local Fatherland Front, communities to give feedbacks which related to

environmental issues. Synthesis opinions of the community of communes/wards are

presented in Table 6.2.

Table 6.2. Consulted comments of community representatives

Communes

and wards

Consulted comments of community representatives

The adverse

impact of the

project to the

natural

environment and

society

Solutions and

measures to mitigate

the adverse impacts of

the project to the

natural environment

and society

Recommendations for the

project owners

Lộc Tiến

ward

- Agreed with the

project

- Recommended that

project owner

implement mitigation

measures fully

- Suggested that project

owner will carry out project

soon

commune report of

environmental

impact

assessment

of environmental

impact assessment

garbage collector to collect

the household waste in the

construction phase.

Temporarily residence

registered for the outside

workers during the

construction.

Lộc Sơn

ward

Agree with the

negative impacts

mentioned in the

document.

Agreed with the report

of environmental

impact assessment

Make the temporary

residence register for the

outside workers during the

construction

Apply quickly construction

methods and coordinate with

the local management

agencies to ensure the

security and the traffic safety.

256

Bàu Hàm 2

commune

- Agreed with

environmental

impact assessment

report;

- Influences to

bussinee and

production of

residents;

- Dust affect

resident life.

- Agreed with


assessment report

- During construction of

flyover limit to the lowest


affecting people's health;

- Compensation and support

for damage of residents

B’Lao ward -When

constructing need

to protect

environmental

quality, reduce

noise level that

will impact on

people

- Implementing all of

mitigation measures that

recommended

- Suggested that the project

will be swift, correct with

construction progress, no

lasting impact on people;

- Compensating and

supporting fully.

Lộc Nga

commune

- Construction

activities are not

correct

construction

progress will

impact on people

life, traffic and

environment

- Excuting fast and

finishing each segment.

Affer construction need

to clean cleanly, at the

same time watering to

prevent dust that pollute

ambient air.

-Publicizing information

on compensation and

assistance for land

acquisition and

resettlement.

- Proposals to strengthen

inspection and supervision,

improve the timing of project

construction.

- Compensating and

supporting fully.

Lộc Châu

commune

- The clearance

disturb the life of

households in the

area cleared and

adjacent areas

while causing

economic losses of

farmers should

therefore plan to

ensure harmony

- Do not use equipments

and mechinaries to

reduce dust and gases

emission

- Implementing the project

fast and having support

policies fully.

Loc Son

commune

- Influences to

people life because

-Publicizing information

and compensating fully; - Suggested that the project

will be swift, correct with

257

land acquisition

- Compensating and

rebuilding facilities that

are affected.

construction progress.

6.2.3. Feedback and commitment of the project owner for suggestions, proposals,

requirements of consulted agencies and organizations

For the reviews of the People's Committee and representatives of communities,

the project ownershas received and integrated in the EIA report. Which are clearly:

The reviews to ensure sanitation, public health: the project owner is committed to

comply with the mitigation measures which are set out in the report of

environmental impact assessment. At the same time, the project owners will

coordinate with local, publicize activities, impacts and measures to mitigate the

impact of the project.

For the problems of traffic safety: With the aim to minimize the impacts causing

the congestion, traffic safety, public utilities damage caused by active transport of

materials, soil type:The project owner will adopt the following measures (the

details will be presented in Chapter 4 of the EIA report):

o Transportation of materials in accordance with the provisions of vehicle load

and running in accordance with prescribed speed on each of road transport

route.

o Materials will be concealed during the transport time.

Work closely with the government of 6 communes / wards in the construction area

during the construction to solve the problems that arising to ensurethe regional

security.

On the construction progress: Project construction as the schedule set.

PMU and investors will require design consultancy of the project implementation

designed to ensure the comfort of the people in the process of access to community

facilities.

PMU and investors will implement environmental recovery after construction.

Making compensation, support agreements comply with law of the government,

to integrate with policies on "involuntary resettlement of the World Bank".

258

CONCLUSIONS, RECOMMENDATIONS AND COMMITMENTS

1. Conclusions

The implementation of the construction investment project for restoration and

improvement of National road No. 20 connecting Dong Nai province and Lam Dong

province under form of Build - Transfer - additional Items: Expanding Dau Giay

intersection flyover and Bao Loc city by-pass route. Including the main items:

Contructing Bao Loc city bypass with width 12m and Dau Giay intersection flyover

involve bridge paths and drainage system…

The activities of the project in the preparation, construction and operation

phases creates some impacts, particularly:

+ Preparation phase:

Impacts on socio-economic area of land acquisition and involuntary

resettlement;

Impacts on air quality by the process of demolition, grading create space

for construction.

+ Construction phase:

Impacts on air quality, public heath due to construction of overpass and

Bao Loc city bypass, material transportation activities…

Impacts on water quality due to wastwater, runoff water, soil erosion,

soil spill…;

Impacts on public heath due to noise that generated by construction

activities…

Impacts on environmental landscape, soil quality due to solid waste.

The potential influences to traffic due to construction of flyover, Bao

Loc bypass; material transportation;

Impacts on ecosystem along to Bao Loc bypass

+ Operation phase:

Dust generating from tire of vehicles during vehicles move on the road

(object affected mostly households living along the road);

Impacts on hydrology, river bank landside when the layout of the piers

in the flow;

Noise generating from vehicles that affect people live along the road;

Along with the impacts on the environment, the risks and incidents have been

mentioned include: technical incidents, fire, labor insecurity.

259

In general, except for major impacts on the quality of water by soil erosion and

spill the other impacts are small to moderate levels, the ability to recover from the

impact by the major construction activities are high. These impacts were fully

predicted, some specific quantified. Despite some forecasts of the impact, especially

for ambient air quality, surface water quality, ... are based rapid assessment methods so

do not have high accuracy, and there should be monitored at the source waste and

recipients to take the appropriate corrective measures, promptly. Besides, within the

scope of the project, this report by the technical limits and time so we could not assess

the social impacts and the cumulative impacts of the project.

Corresponding to the negative impacts on the environment the authors have

developed measures to minimize the impact and risks, incidents on the basis of

individual causes that aim to prevent at the source of adverse impacts . These

preventive and mitigative measures are effective and feasible in the application.

Based on the negative impact on the environment and measures to prevent and

minimize that indicated, a program of environmental management and environmental

monitoring was established to set environmental management and supervisory

framework throughout the life cycle of the project, including the construction

preparation, construction and operation phase. The monitoring items include: air

quality, noise, vibration and surface water. Representatives of the Government- Project

Management Unit 7 and investors - BT20 JSC are responsible for environmental

management and monitoring.

Community consultation has been done according to the requirements of the

Environment Protection Act 2014 and under the guidance of Circular no.27/2015 / TT-

BTNMT on communes/wards of projects such as Bau Ham commune 2 - Thong Nhat,

Dong Nai province; Loc Chau, Loc Nga commune and B'Lao, Loc Tien and Loc Son

ward - Bao Loc City, Lam Dong Province. The results of the consultation of local

authorities and communities affected have been indicated in this report. After the EIA

report of the project is approved by Ministry of Natural Resources and Environment,

PMU 7 and BT20 will develop an Environmental Management Plan and

environmental and technical guidances as the basis for the implementation of the

management plan, environmental monitoring of constructors.

2. Recommendations

The project needs the cooperation and supports of the Department of Natural

Resources and Environment of Dong Lai and Lam Dong provinces with the local

authorities that are located in the provinces to implement the environmental protection

plan during the execution of the project.

The project also requires the cooperation and supports of the provincial People's

Committee of Dong Lai and Lam Dong to ensure road safety corridor in accordance

260

with Decree No. 11/2010 / ND-CP dated 24 / 5/ 2010 on the management and

protection defense infrastructure and road clearance.

In addition, the project looks forward to receiving the close collaboration of

local traffic police in the construction phase.

3. Commitments

The project owner is committed to coordinate closely with the environmental

management agencies at all levels to implement the best surveillance and

environmental protection in the construction phase and operation. The elements of the

natural environment is fundamental to ensure the limits allowed by the Vietnam

Standards and National Technical Regulations on environment are currently in effect.

Bind the bidder of each package with the terms of the contract to carry out

thorough measures to minimize the environmental impact of air and noise during the

construction phase are presented in chapter 4. Proactively and promptly treated if

construction activities cause air pollution and noise affect the surrounding environment

and production activities of the local community.

Project owners and contractors comply with the laws on noise, air pollution,

vibration, water pollution, solid waste, liquid waste and other sanitations.

The Contractor is responsible for restoring the original condition at the place of

temporary land occupation and other activities such as:

- Ensuring security in the building process.

- Ensuring fire prevention in the construction phase.

- Commitment to dump waste at designated places after reaching agreements with

local authorities.

- Committed to environmental restoration after the construction.

- Commitment to the program manager for environmental monitoring during

construction projects such as the EIA report.

- Committed to provide adequate and timely funding for the Environmental

Protection.

- Commitingt to regular settlement, monitoring of incidents and complaints

related to environmental solutions to solve in time.

- Committing to not interrupt electricity, water, communication, irrigation.

- Commitment to compensate environmental pollution and environmental

incidents in which case the risk of environmental accidents occur due to the project

implementation.

261

During the implementation of construction projects, representing project

owners and construction units committ to environmental standards currently in effect,

as follows:

- Air quality according to QCVN 05:2013/BTNMT; QCVN 06:2009/BTNMT.

- Noise, vibration according to QCVN 26:2010 và QCVN 27:2010/BTNMT.

- Surface water quality according to QCVN 08-MT:2015/BTNMT.

- Domestic waste water quality according to QCVN 14-MT:2015/BTNMT.

- Industrial waste water quality according to QCVN 40:2011/BTNMT.

- The quality of domestic wastewater according to QCVN 14-

MT:2015/BTNMT.

- Soil quality according to QCVN 03-MT:2015/BTNMT.

- Government Decree on the management of solid waste (NĐ38/2015/CP) and

Circular of the Ministry of Natural Resources and Environment Management of

hazardous waste (TT36/2015/BTNMT).

Documents

REPORT - Multilateral Investment Guarantee Agency · ministry of tranport projects management unit 7 ***?t* report environmental impact assessment construction investment project