Environmental Monitoring Report

Environmental Monitoring Report

Semestral Report July-December 2013

VIE: Mong Duong 1 Thermal Power Plant

Prepared by Electricity of Vietnam and Thermal Power Projects Management Unit 1 for the Government of Viet Nam and the Asian Development Bank.

EVN GENCO 3

Thermal Power Projects Management Board 1 (TPMB1)

MONG DUONG (2 x 500MW) THERMAL POWER PLANT PROJECT

2nd

SEMI-ANNUAL

ENVIRONMENTAL MONITORING REPORT 2013

Period 01st

July 31st

December 2013

Contract No: TPMB1-EVN/ADB-2610L2MFF-Consulting-002

2nd Semi-annual Environmental Monitoring Report 2013

Mong Duong (2 x 500MW) Thermal Power Plant Project

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CONTENTS

EXECUTIVE SUMMARY ........................................................................................................... 5

1. INTRODUCTION ............................................................................................................. 10

1.1 The project ........................................................................................................................................10

1.2 Incorporation of Environmental Requirements into Project Contractual arrangements ...................10

1.3 Project Implementation Progress ......................................................................................................11

1.4 Report Purpose .................................................................................................................................13

2. ENVIRONMENT COMPLIANCE INSPECTIONS ..................................................... 14

2.1 Environment Compliance Inspections at the Construction Site ........................................................14

2.2 Health, Safety & Environment (HES) Aspects .................................................................................14 2.2.1 Health, Safety & Environmental Management Plan (EMP) ......................................................15 2.2.2 HSE Management Organization (EPC Contractor Hyundai E&C) ...........................................15 2.2.3 Total Man hours of the EPC Contractor and its Subcontractors ................................................15 2.2.4 Accident Free Man hours of the EPC Contractor and its Subcontractors ..................................16 2.2.5 Health, Safety and Environmental Training ..............................................................................16 2.2.6 Health, Safety & Environment Inspection and Result ...............................................................19 2.2.7 Personal Protective Equipment (PPE) .......................................................................................21 2.2.8 Security Status ...........................................................................................................................21 2.2.9 HSE Improvement Plant ............................................................................................................22 2.2.10 Safety Award .............................................................................................................................24

3. ENVIRONMENTAL QUALITY MONITORING ........................................................ 25

3.1 Air quality, Noise and Vibration Monitoring....................................................................................25 3.1.1 Monitoring of Air quality ..........................................................................................................25 3.1.2 Noise Monitoring ......................................................................................................................27 3.1.3 Vibration Monitoring ................................................................................................................31 3.1.4 Overall Assessment ...................................................................................................................32

3.2 Water Quality Monitoring ................................................................................................................33 3.2.1 Monitoring parameters and procedures .....................................................................................33 3.2.2 Inspection Activities ..................................................................................................................35 3.2.3 Monitoring result and assessment ..............................................................................................36 3.2.4 Underground water quality at existing wells .............................................................................42 3.2.5 Underground water quality from drilled wells ..........................................................................45 3.2.6 Overall assessment ....................................................................................................................48

4. AQUACULTURE & FISHERY ....................................................................................... 50

4.1 Overview ..........................................................................................................................................50

4.2 Inspection Activities .........................................................................................................................50

4.3 Overall Assessment Aquaculture and Fishery ..................................................................................51



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5. MANGROVE REFORESTATION MONITORING ..................................................... 53

5.1 Overview ..........................................................................................................................................53

5.2 Inspection Activities .........................................................................................................................53

5.3 Overall Assessment Mangrove Reforestation ...................................................................................54

5.4 Recommendation ..............................................................................................................................55

6. OVERALL CONCLUSIONS AND RECOMMENDATIONS ..................................... 56

6.1 Health, Safety &Waste Disposal Management .................................................................................56

6.2 Environmental Quality Monitoring...................................................................................................56 6.2.1 Air & Noise and Vibration Monitoring .....................................................................................57 6.2.2 Water quality Monitoring ..........................................................................................................57 6.2.3 Aquaculture and Fishery Monitoring ........................................................................................58 6.2.4 Mangrove Reforestation Monitoring .........................................................................................58



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TABLES Table 1.1Institutional Responsibilities for EMP Implementation (extended version) ................................................. 10

Table 2.1: Accident-free man-hour .................................................................................................................................... 16

Table 2.2: Health, Safety & Environment Training Status .......................................................................................... 17

Table 2.3: Health, Safety & Environment Inspection and Result ................................................................................ 20

Table 2.4: HSE Improvement Plant ............................................................................................................................ 22

Table 3.1: The monitoring location, monitoring parameters and monitoring equipment and analyzed methods for air

quality monitoring ............................................................................................................................................... 25

Table 3.2: Monitoring results of TSP and PM10 ........................................................................................................ 25

Table 3.3: The monitoring location, monitoring parameters and monitoring equipment and analyzed methods for

noise monitoring.................................................................................................................................................. 28

Table 3.4: Monitoring results for Noise at residential sites ......................................................................................... 28

Table 3.5: Monitoring result for Noise at the working site ......................................................................................... 29

Table 3.6: The monitoring location, monitoring parameters and monitoring equipment and analyzed methods for

vibration monitoring ............................................................................................................................................ 31

Table 3.7: Monitoring results for vibration at residential sites .................................................................................... 31

Table 3.8: Coordinates of surface water samples ........................................................................................................ 36

Table 3.9: Monitoring and analyzing results of surface water .................................................................................... 37

Table 3.10: Coordinates of coastal water samples ...................................................................................................... 39

Table 3.11: Monitoring and analyzing results of coastal water samples ..................................................................... 40

Table 3.12: Coordinates of underground water samples (Existing wells) ................................................................... 42

Table 3.13: Monitoring and analyzing results of underground water (Existing wells) ................................................ 43

Table 3.14: The coordinate of underground water (Drilling wells) samples ............................................................... 45

Table 3.15: Monitoring and analyzing results of underground water (Drilling wells) ................................................ 46

Table 5.1: Monitoring and analyzing results ............................................................................................................... 54

FIGURES Figure 3.1: Water quality environmental monitoring procedure ................................................................................. 34

Figure 3.2: Monitoring sites ........................................................................................................................................ 35

Figure 5.1: Method for selection of sample................................................................................................................. 53

APPENDIXS Appendix 1 Environmental Team Organization Chart ................................................................................................ 60

Appendix 2 HSE Organization Chart .......................................................................................................................... 62

Appendix 3 Pictures of Air quality and Noise ............................................................................................................. 63

Appendix 4 Pictures of Water Quality ........................................................................................................................ 65

Appendix 5 Pictures of Aquaculture and fishery......................................................................................................... 66

Appendix 6 Pictures of Mangrove Reforestation ........................................................................................................ 67

Appendix 7 Picture of HSE ......................................................................................................................................... 68



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EXECUTIVE SUMMARY

The Mong Duong 1 Thermal Power Plant project has been classified as category A1 in

accordance with ADBs Environmental Assessment Guidelines (2003). The Project EMP was developed as an integral part of the Environmental Impact Assessment (EIA) process of the

Project that was completed and approved by ADB in 2006.

To ensure that negative environmental health and safety impacts are minimized and addressed

effectively throughout the project implementation and operational phase, an environmental

management plan (EMP) has been formulated detailing mitigation measures and a monitoring

program during various project phases of the Mong Duong 1 Thermal Power Plant project,

located in the northern province of Quang Ninh (Vietnam)

The report is highlighting on the environmental monitoring tasks and quality observations

performed by the various project entities on air & noise, vibration, water quality, aquaculture

and fishery development and a chapter on mangrove reforestation. It is further reporting on

health & safety issues at site as well as on social impacts on the affected communities including

gender issues related to man and women working together on the same project and sharing

common camp facilities.

It covers the works implemented during the period July to December 2013 and provides a

summary of current problems, conclusions and recommendations how to best mitigate the

impacts on affected parties and the environment.

The following environmental aspects were looked at for environmental compliance and

monitored for environmental quality during the reporting period

Air and noise quality

Water quality

Aquaculture and fisheries status

Mangrove reforestation

Health, Safety and Environment (HES)

Social impacts and Gender issues Problem areas inspected for environmental compliance and monitored for environmental quality

during the reporting period relating to Air & Noise, Vibrations, Water quality and Aquaculture

were more affected in the current reporting period compared to the last 6 months period, mainly

due to the increased level of activities at the construction site or nearby locations serving the

Mong Duong project. Air & Noise and Vibration Issues Regarding Air Quality comparing the monitoring results (dust) of affected areas between the first 6 months in 2013 and the last 6 months of 2013, it shows that the last 6 months of 2013 has a

higher concentration of air pollutants than the 6 months before, especially in the 3 months

September, October and December 2013 when the construction activities were very high. The

increase is mostly due to increased traffic on the new No.18 and old No.18A road likewise

carrying equipment and construction materials to the site

On the new No.18 road near the entrance of Mong Duong 1 and 2 power plants, heavy vehicle

movements are the main cause of dirt and dust. Additionally intermittent rainfalls during these

months made the road muddy too. The contractor is trying hard to clean the road to improve the

conditions. The appearance of construction waste in nearby vacant land (along the new No.18



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road such as concrete from bored piles and other construction debris has improved over time

and gives a tidy look now. Wheels of construction vehicles leaving the site are cleaned before

entering the public road. Excavated areas and heaps of backfill on the site shall are sprayed with

water or covered with plastic sheeting to limit dust migration to nearby residential areas.

Through 6 monitoring times of noise quality at the working site during 2 days each in the period

July to December 2013, the monitoring results for noise at working site in all six monitoring

times, noise level monitored in 1 hours at boiler area is about 73,2 78,1 dB(A). If compared

with allowable noise levels at working places, the measured values are lower than the limited

permitted values in TCVN 3985:1999 (85 dB).

Noticeable environmental impacts during the reporting period has not only been caused by

construction activities, but also due to social environment changes caused by the gathering of the

large work force in the Mong Duong precinct which causes all sort of problems including

increased traffic, particularly in the early morning and evening time, when a large contingent of

the labor force for both projects enter the work space and accumulation of domestic waste caused

by the increase in people inhabiting the area.

In order to limit the noise level at Residential areas, particularly at night time, the Contractor has

been requested to keep heavy construction works to day times and limit vehicle movements after

10PM to a minimum required. This has been well observed by both contractors for Md1 and

MD2 power plants

Through 6 monitoring times during 2 days each in the period July to December 2013,

Monitoring results for vibration level at 2 sites during the period of 6AM 21PM are lower than the limited value in QCVN 27:2011/BTNMT National Technical Regulations on Vibration. Construction activities of Mong Duong 1 Thermal Power Plant are mainly implemented during

the daytime, therefore no vibration is created during the nighttime, from 21PM-6AM. Water quality

Water quality is monitored for underground water and coastal water:

Almost all tested items of underground water at the sampling sites are within the limits of

the National technical regulation on underground water quality QCVN09/2008/BTNMT

except for (Cd) and (Cl-) content and content of micro-organisms (Coliform)

Concentration of microorganisms (Coliform) beyond permissible limits of the National

technical regulation on underground water quality were found at the sampling points of

PW-01, PW-02, PW-03, PW-04, PW-05, PW-06, PW-08, PW-09. This is explained by

the fact that water in existing wells are not frequently utilized, thus the water is not

rotated thereby easily creating conditions for microbial growing.

Concentrations of chloride (Cl-) beyond permissible limits of the National technical

regulation on underground water quality were found at the sampling points of PW-03,

GW-01-D, GW-08, GW-09 and GW-11. This is explained by the fact that the sampling

sites are located in the coastal areas, thus may be lightly saline

Impact of obstacle removal activities in coastal surface water is monitored by coastal

surface water sampling sites. Parameters of them are all within limit in comparison with

QCVN 10: 2008/BTNMT



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Impact of Mong Duong river alignment activities in coastal surface water is monitored by

coastal surface water sampling sites. Parameters of them are almost within the limit in

comparison with QCVN 08: 2008/BTNMT

Impact of transport activities in coastal surface water is monitored by coastal surface

water sampling sites. Parameters of them are within limit in comparison with QCVN 10:

2008/BTNMT

Two of the heavy water pollution sources are water discharged from coal mining areas

via the Mong Duong River and barges transporting coal in the nearby waterway.

Spilled coal from barges dilutes elements and compound to coastal waters.

In order to compensate for the two wells which were covered during the initial site fill activities,

the contractor has been requested to drill two additional wells with a depth of 25 to 30m to

ensure water quality sampling can be done at lower aquifers. This has since been completed by

the Owners own contracted agency.

Contractor must maintain all current measures to avoid pollution of surface and underground

water resources by strict control on solid and liquid waste dumping and/or accidental spillage of

oil and chemicals.

To offset the problem of the polluted water discharge from coal mining activities, treatment of

discharged water from the coal mining process and a reduction in coal smuggling activity would

greatly improve the quality in the water way, but this may be difficult to achieve.

Aquaculture and Fisheries

Based on the results of the two surveys on fishing and aquaculture activities in Thac Thay, De

Dach and Mong Duong rivers and along the coastal line of Cam Hai commune during the second

half of 2013, it can be concluded that the construction phase of Mong Duong 1 power plant has

minor impacts on the aquatic resources in the inspected areas. There were no fishing activities in

De Dach and Mong Duong rivers due to heavy industrial pollution from mining and coal trading.

Number of aquatic species and their components in these areas are very limited. Some fishing

activities were observed in the Thac Thay River and Luong Gac areas, but there are no

shrimp activities along Cam Hai coastal line due to loss from shrimp disease outbreak and

flooding. Normal fishing activities and aquaculture species are observed in the Thac Thay River

and along the coastal line of Cam Hai commune.

To reduce impacts of pollution from mining and coal trading, Contractors are requested to

strictly enforced the solid and liquid waste disposal management plan and prohibit dumping of

hazardous substances into nearby rivers and coastal water.

Mangrove Reforestation Program

To compensate for the loss of mangrove forest taken by the Mong Duong Project, 52ha of

mangrove has been re-planted in Dong Rui Commune, (Tien Yen district, QuangNinh province)

Inspection result shows that mangrove quality develops well, branching off well, in the allocated

area of 52 ha of mangrove forest which was replanted, there is 95% survival rate of plants.



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With the current achieved results, the Mangrove planting project has met the requirement of

ADBs EIA.

To sustain the good results, continuous protection and feeding of the mangrove is a must to

ensure their good development and branching off. Activities such as tree clearing, weeding and

replanting of failed areas must also be maintained

Dumping of waste in mangrove and forestry areas and resource extraction from mangroves and

plantation forestry areas must be strictly prohibited.

Mangrove reforestation in area 1 has been accepted by TPMU1 in October 2013. The area 2 has

not been accepted due to the ratio of coverage has not meet the requirement of the contract yet

and the areas of died trees needs to be regrown, so efforts need to be continued to achieve the

required results

Health & Safety and Environment

Monitoring consists of daily observation and inspections of environmental pollution, soil

contamination, fire hazards, labor and site safety and other health or safety hazards. This topic

does not belong to the monitoring scheme of the assigned environmental experts of the

Consultant, but is observed and monitored by the Owners Consultant Site supervision staff during their daily work activities and by the Consultants Occupational Health and Safety expert.

Current results show

Good overall performance of the EPC contractors appointed HSE team with the

Environmental Officer (OE) appointed as per the Contractors EMP

Good site safety management of the EPC contractor with regards to fire safety, plant and

equipment safety, labor safety, worker training before entering working sites and access

gate checks at site entering points.

No fatality but 2 Lost Time accident occurred until now with the accumulated total man-

hours of 12,386,146 as of December 2013

No serious soil issues happened at site until now, besides some small oil spillages

which were treated immediately as per the Contractors EMP

Waste management follows the contractors EMP by separating waste into different

groups and collected and disposed as per the EMP requirements.

All required permits are in place ie. Permit To Work, Confined Space Entry Permits, Gas

Test Certificates etc.

First Aid service is available 24/7

In order to maintain the good standard the EPC contractor must strictly enforce the site safety,

warn offenders and in repeat cases dismiss them from site (some recent incidents shown in the

attached pictures need to be corrected)

Newly legislated and/or revised environmental laws must be carefully examined in order to

determine whether or not they are required to be implemented during the project execution

Contractor has to ensure at all times that it complies with the EIA and the requirements specified

in chapter VI of the ADB environmental assessment guidelines, 2003. Contractor should once



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every 6 months organize exercises based on likely accident scenarios at site in which the

contractors assigned key site personnel assumes their emergency response roles and

periodically evaluate the efficiency of the Project EMP in place.

Social and Gender Aspects

Most current results show that both men and women are well informed of potential health and

safety risks: HIV/AIDS control and prevention activities for both camp workers and offices were

carried out by the EPC contractor to educate awareness on personal hygiene and sexually

transmitted diseases. Drug education for construction and office workers are implemented and

undergo test screenings every 6 months for early detection and manage health issues. Camp

workers and construction office workers are vaccinated and regularly checked for diseases by

healthcare provider taking care of construction workers and local villages.

A recent audit at one of the contractors labor camp (LLM 69.1) showed excellent results. The

rooms for women are in good condition and include bath room and toilet inside. Television and

Air conditioner are also provided. Water supply is from underground well treated by RO system

before using. Water is tested frequently for its safe use.

The condition of the site toilets is good with separate toilets available for both men and women.

Currently 76 toilets are provided at the Mong Duong 1 site for some 3,000 workers. They are

cleaned daily. As per the EPC contractors information the percentage of female workers is

approximately 15% split in field and office staff.

It is suggested that the Owners Consultant will continue to perform regular audits at the contractors labor camps, especially with regards to gender issues, at the contractors offices and at the construction site itself, to ensure the good standard regarding sanitary conditions is

maintained throughout the project construction phase.



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1. INTRODUCTION

1.1 The project

The Government of Viet Nam has requested assistance from the Asian Development Bank

(ADB) to part finance the construction of the Mong Duong 1 Thermal Power Plant (under Loan

No.2350, and 2610). The Project is a coal-fired, thermal power electricity generation project with

a generation capacity of 1,000 MW. The overall project comprises of two power plants on the

same plot of land with an ultimate generation capacity of 2200 MW. The Mong Duong 1 power plant will comprise of two 500 MW generating units, and associated supporting infrastructure

whereas the Mong Duong 2 power plant built under a BOT scheme comprises of two 600 MW

generating units.

The MD1 project has been classified as category A1 in accordance with ADBs Environmental Assessment Guidelines (2003). The EMP was developed as an integral part of the Environmental

Impact Assessment (EIA) process of the Project that was completed in 2006.

The Mong Duong 2 power plant project is not part of this report, although it may contribute to

the overall impact on the environment as the two plants are back to back located on the same

piece of land.

1.2 Incorporation of Environmental Requirements into Project Contractual arrangements

To ensure that any possible negative environmental impacts are minimized and addressed

effectively, an environmental management plan (EMP) has been formulated detailing mitigation

measures and a monitoring program during various project phases. The individual monitoring

tasks and its frequencies are determined by the EIA and the approved staffing plan of the Project

Owner of the Consultants experts conducting the monitoring tasks together with EVN appointed environmental monitoring agencies of Quang Ninh province

Key organizations in the implementation of the EMP and their corresponding responsibilities are

presented in Table 1.1

Table 1.1Institutional Responsibilities for EMP Implementation (extended version)

EMP Responsibilities

Mong Duong 1 Responsibility

- Submit Government EIA/EMP to MONRE - Successfully implement EMP - Provide funds for EMP implementation

EVN/GENCO3 (Project owner)

- Coordinate and manage overall project implementation and operation including

guiding and supervision of EMP

implementation during pre-construction,

construction, and operation phases

- Manage and coordinate environmental monitoring

- Coordinate with other parties in relation to environmental management activities

- Supervise civil work contractor during construction, including implementation of

TPMB1



Page 11 of 70

EMP Responsibilities

Mong Duong 1 Responsibility

environmental management activities under EMP

- Manage EMP budget - Integrate EMP specifications in contract documents

- Prepare detailed design activities incorporating relevant EMP requirements

Detail design consultant

(PECC1)

- Implement environmental specifications detailed in the construction contract

Construction contractor

- Monitor EMP implementation during the construction phase

Environmental monitoring

consultant team

- Conduct periodic monitoring of compliance to EIA/EMP provisions

Quang Ninh DONRE

1.3 Project Implementation Progress

During the second half of 2013 of the construction phase of the Mong Duong 1 thermal power

plant project, construction activities increased commensurately with the ongoing progress of the

project.

Some of the main civil construction works carried out at the construction site during this period:

July 2013

Concrete works for Stack #1were completed

Concrete works for top slab of Waste water treatment pond area was completed.

Concrete works for foundation of seal pit #1 and #2 were completed.

Concrete works for Fly Ash foundation and pedestals were completed.

Concrete works for WT clarifier and acid tank foundation were completed.

Superstructure for Administration building, Common Services building, Central Control

building and Water treatment building were completed and now undergoing architectural

finishing works

Fuel oil tank foundations were completed

Top slab of Turbine pedestal #1 was completed August 2013

Earth anchor works for CW Intake facility were completed

Concrete works for CW Intake and pump station continued

Excavation works for Bottom Ash silo and ID fan foundation were completed

Backfill work for Fly Ash Silo foundation was completed

Excavation works for WT plant outdoor equipment foundations were completed

Excavation work for Potable tank was completed

Piling work for Chlorination plant and CW outdoor facility was completed

Installation for 110kV switchyard were completed



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September 2013

Concrete works for C.W discharge box culvert were completed Concrete works for Seal pit A, B were completed Concrete works for Generator Transformer #2 fire walls were completed Top slab of Turbine pedestal #2 was completed

Concrete work for Bottom Ash Silos and ESP foundations were completed

Concrete works for WT plant outdoor clarifier, potable water tank, pH adjust

&mixing pond and pressure filter foundation were completed

Piling work for Coal Transfer Towers & Belt Conveyors was completed

Piling work for limestone and fuel oil unloading jetties was completed October 2013

Concrete work for Stack #2 Windshield was completed.

Concrete work for 2nd slab in Intake Facility (pump house) was completed.

Concrete work for Cooling water discharge box culvert zone A was completed

Excavation work for Discharge outfall was completed

Concrete work Transformer #1 foundation was completed

Concrete work Transformer #2 pedestal was completed

Backfill work Transformer #2 was completed

Concrete work for Main pipe rack was completed

Concrete work for ID Fan foundation #1B was completed

Backfill work for ID Fan #1B was completed

Backfill work for Bottom ash silo #1B was completed

Concrete work for cable trench in 500KV & 110KV Switchyard was completed

Pile work for Return water pump house was completed

Pile work for Gantry crane in Intake facility was completed

Pile work for Return water pipe rack was completed

November 2013

Backfill work for C.W. Discharge Box Culvert zone A was completed

Backfill work for Main pipe rack was completed

Concrete work for ID fan wall 1B was completed

Concrete work for ID fan wall 2B was completed

Concrete work for Bottom ash silo 1A was completed

Backfill work for Bottom ash silo 1A was completed

Concrete work for foundation of 500KV & 110KV Switchyard was completed

Concrete work for WWT area support foundation was completed

Concrete work for WWT area trench was completed

Concrete work for WWT area pump foundation was completed

Excavation work for Heavy fuel oil dike was completed

Excavation work for Sewage treatment system was completed



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December 2013

Concrete work for Outfall was completed

Backfill work for C.W Discharge Box Culvert zone B was completed

Backfill work for Seal pit A, B was completed

Concrete work Transformer #1 Pedestal & Fire Wall was completed

1.4 Report Purpose

This report intends to describe the progress regarding implementation of the project EMP and

compliance issues and corrective actions for the second half of 2013 of the construction phase of

the Mong Duong 1 thermal power plant project.

The following environmental aspects were inspected for environmental compliance and

monitored for environmental quality:

Air, noise quality and vibration

Water quality

Health Safety and Environment (HES) aspects

Aquaculture and fisheries

Mangrove reforestation

1.5 Vietnamese Environmental law/regulation and Project Environment documents



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2. ENVIRONMENT COMPLIANCE INSPECTIONS

2.1 Environment Compliance Inspections at the Construction Site

- Air quality impact:

+ Dust resulting from the removal of vegetation and heavy earthmoving activities

+ The large number of construction equipment and heavy vehicles cause considerable dust emissions

- Mitigation measures: - Constructors have applied the following measures

+ Spraying bare soil and heaps of excavation materials with water to minimize dust generation during dry periods

+ Minimizing disturbance to vegetation and terrain features and providing cleared areas and stockpiles with vegetative cover to serve as buffers between the Project and the population

+ Fencing off construction areas to contain dust,

+ Covering trucks during transport of materials and impose speed limits

+ Avoid burning of domestic wastes

+ Contractors will be required to properly maintain equipment to minimize emissions

+ Ensuring the commitment of contractors and/or suppliers to undertake applicable measures above

+ All trucks before leaving the construction site are required to clean the wheels

- Noise and ground vibration:

+ Noise impact and ground vibration during construction can disturb nearby communities

- Mitigation measures:

+ Construction schedules must optimize daytime working hours and scale down activities at night.

+ Extensive earthmoving and movement of heavy equipment should be conducted only during regular working hours

2.2 Health, Safety & Environment (HES) Aspects

The following Health & Safety and Environment (HES) aspects were inspected / monitored

during the reporting period for compliance

Site safety issues Site waste disposal management Pollutants Spillage

Worker Camp and Sanitation issues Social impacts and Gender issues Health aspects



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2.2.1 Health, Safety & Environmental Management Plan (EMP)

The EPC contractors Environmental Management Plan (Rev B) was issued to the Project Owner on 30thNov 2012 under Doc No. MD1-0-T-070-01-00021 and approved as such.

The policy shall be communicated to all employees and those working for and on behalf of

HDEC through the induction course and be displayed at the site working area and in prominent

positions on site.

2.2.2 HSE Management Organization (EPC Contractor Hyundai E&C)

The EPC contractors HSE organization structure is in line with their own EMP (refer to Appendix 1 update 25th December 2013)

Safety Engineers/Officers have Certificate of OHS and show good working experience. Contractors Environmental Officer (OE) is appointed as per the EMP and portrays

excellent knowledge of the environmental management system (EMS) as well as the

applicable approved environmental impact assessment report (EIA).

2.2.3 Total Man hours of the EPC Contractor and its Subcontractors

Table 2.1 shows the accident hours against cumulative total man-hours during the period of

July and December, 2013

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Table 2.1: Accident-free man-hour

DESCRIPTION Total (Cumulative)

MONTH Jul Aug Sept Oct Nov Dec

Cumulative total man-hours

6,007,761

7,132,820

8,818,228

9,635,789

10,988,975

12,386,146

Cumulative since last LTI

892,351

1,125,059

1,047,408

1,455,561

2,222,311

3,619,483

Fatalities - - - - - -

Accum. Lost time incidents (LTI)

-

-

1

2

2

2

Restricted Work Day Case

-

-

-

-

-

-

Accum. Medical Treatment Case

1

1

1

1

1

1

Accum. Non- injurious incidents

8

10

12

12

14

15

Accum. First aid cases

99

106

115

127

134

141

Accum. Near Miss Incidents

4

5

5

5

7

8

LTIFR* - - - 0.208 0.182 0.161

* LTIFR (Lost Time Injury Frequency Rate)

Fatality a+ a =

kg as , 0, 0

2.2.4 Accident Free Man hours of the EPC Contractor and Subcontractors

Until 1st

January 2014, there has been no fatality with total accumulated man hours reaching

12386146. Unfortunately, 2 lost time incidents occurred on 15/9/2013 [Appendix 2] and on 12/10/2013 [Appendix 3] and one Fire incident on 4/12/2013 [Appendix 4]

2.2.5 Health, Safety and Environmental Training

The training records and site inspection results related to safety and environmental aspects are

presented in Table 2.2.



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Table 2.2: Health, Safety & Environment Training Status

Item

No. o

July

f

No. of

No.

August

of N

o. of

September

No. of No. of

No.

October

of No. of

November

No. of No. of

December

No. of No. of

Trainer Description Training People training People training People training People training People training People

T.B.M. Safety Engineer

Daily T.B.M. before

starting work

Daily

77,266

Daily

99,979

Daily

97,818

Daily

128,280

Daily

121,924

Daily

121,924

Induction

Training

Safety

Engineer

Induction Training

for

Safety/Environment

30

1,175

23

1,183

23

1,315

22

1,343

22 873 22 800

Rigger Safety

Officer Lifting, Rigging,

Signal man

2

39

1

12

1

10

Working at

Height Safety

Engineer For people who

work at height

5

152

6

242

7

340

2

70 5 370 7 298

Refreshment

Training

Safety

Officer

PTW, Lifting,

Working at height,

Accident case

21

1,780

21

1,647

Confined Space

Training

Safety

Officer

How to work in

confined space

1

26

4

152

3

87

2

243 2 243 2 95

Special

Training Safety

Officer Electrical Safety for

Licogi Corp.

1

60

Special

Training Safety

Officer

Rigger for YooA

1

33

Special

Training Safety

Manager

PTW Procedure

2

110

Special

Training

Safety

Officer

Crane operator for BDCC and Lilama

45.1

1

46

Fire-fighting

Training Safety

Engineer How to prevent fire

from the site

30

1,175

23

1,183

23

1,315

22

1,343

22 873 22 800



Page 18 of 70

Item

Trainer

Description

July

August

September

October

November

December

No. of

Training

No. of

People

No. of

training

No. of

People

No. of

training

No. of

People

No. of

training

No. of

People

No. of

training

No. of

People

No. of

training

No. of

People

Operation

Training

Safety

Officer

For crane operator,

fork lift operator

1

120

PTW

Training

Safety

Officer

Permit to work

procedure

22 873

Refreshment

Training

Safety

officer

For Locogi Corp, Lilama 69.1 after

near miss

2 133

Special

Training

Safety

Office

Safety Supervisor

training for Licogi

Corp Engineers

1 6

Refreshment

Training

Safety

Office

Lilama 69.1 after

near miss incident

1 53



Training methodology

Power Point presentation for site safety training in both languages English and Vietnamese are

available and taught at Hyundais Site Safety office on a daily bases

All new employees/visitors need to pass the safety training before admission to site. In case of an incidence occurrence, the involved persons are sent back to repeat training to

avoid future incidents of a similar nature

2.2.6 Health, Safety & Environment Inspection and Result

Table 2.3 shows HSE inspections and results during the observed period of July and

December, 2013

Page 19 of 70



Table 2.3: Health, Safety & Environment Inspection and Result

Location Inspector Jul Aug Sep Oct Nov Dec Description

Boiler

Safety

Engineer/Officer

Daily

Daily

Daily

Daily

Daily

Daily

Working at height, Lifting Activities, (October and November: A Lilama 69.1 worker was injured by

Pipe spool)

Admin

Building

Safety

Engineer/Officer

Daily

Daily

Daily

Daily

Daily

Working at height, Scaffolding Condition, Access etc. (September: One person (Licogi 18) was injured while

dismantling of hoist was ongoing)

Whole

area

Workshop/Safety

Engineer

Weekly

Weekly

Weekly

Weekly

Weekly

Weekly

Visual inspection of all cranes (September: Temporary electric

cable and electric pole located in GRP Block B (belonging to MD

2) were damaged by dump truck) Field

Tank Safety

Engineer/Officer

Daily

Daily

Daily

Daily

Daily Electric Condition (Welding and Panel Board), Scaffolding

Condition, Confined Space Condition

STB

Safety

Engineer/Officer

Daily

Daily

Daily

Daily

Daily

Daily

Working at height, Scaffolding Condition, Access etc.

August: A hook did a free fall due to operators mistake from approx. 5m at STB #2 and hit one workers left leg. He sustained slight injury (First Aid Case)

September: Small fire happened in the GRP Block C, it was

extinguished immediately.

Chimney Safety

Engineer/Officer

Daily Checking slip form, working at height, lifting activities.

WWT

Building

Safety

Engineer/Officer

Daily

Daily

Daily

Daily

Daily

Lifting activities, working at height, scaffolding condition, Access etc.

July: Falling material (Non-injury accident) took place when roof

lifting was ongoing by YOOA contractor

Coal

Yard

Safety

Engineer/Officer

Daily

Daily

Daily

Daily

Working at height, Lifting activities August: A fire happened in the electric panel board. It was

extinguished completely by the Fire Watch Man

Intake Safety

Engineer/Officer

Daily Working at height, Scaffolding Condition, Lifting activities, Hot Work, and etc

BOP Safety

Engineer/Officer

Daily Lifting activities, Hot work, electric condition, and etc

Environment Compliance Inspection Reports were issued in August, September, October, November and December 2013 by HDEC.

Page 20 of 70

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2.2.7 Personal Protective Equipment (PPE)

All employees of the EPC contractor and all its subcontractors, or anyone visiting the work

area, are required to wear hard hat (with exception of office, cafeteria, and

accommodation), safety shoes, high visibility vest and fluorescent gathers covering ankles

above the safety shoes. The use of a safety harness is compulsory when working at heights

greater than 2 meters above ground. Safety [harnesses are to be of the double clip type so

the wearer is secure at all times

2.2.8 Security Status

EPC contractor has placed security guards 24/7 at all the access gates. (Main gate,

cooling water intake and material laydown area)

All gates implement inspections for workers and vehicles to prevent theft.

EPC contractor has prepared PPE for visitors at the main gate and check all workers and

vehicles if they have valid IDs and/or vehicle cards

There are 4 security cameras at the Main gate.

However, there were still some occurrence of thefts reported by the contractor

Time & Date: 03-Sep-2013 at night time

Location: Barge, temporary jetty

Discovered by: Vietranstimex Supervisor

Material Stolen: 1'' C/S pipe (4.2 m long) 466 pieces

4'' Horizontal Bracing (2.8 m long) 39 pieces



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Time & Date: 25-Sep-2013 at night time

Location: The North of Boiler 1B

Discovered by: HDEC Security Supervisor

Material Stolen: 1 ton of steel scrap

This material hadn't moved out the site

Time & Date: 07-Oct-2013 18.15PM

Location: Main gate

Description: Two SeJong workers tried to bring copper wire to out of

the site. However, these workers were caught by HDEC Security

Guard, and this material hadn't moved out the site

Material Stolen: - 20 Ground Cable (01 m) x 1

- 40 Copper wire (20 cm) x 4

Time & Date: 20-Oct-2013 18.00PM

Location: Main gate

Description: Two SeJong workers tried to bring copper wire to out of

the site. However, these workers were caught by HDEC Security

Guard, and this material hadn't moved out the site

Material Stolen: - 15 Ground Cable (70 cm) x 2 - 30 Copper wire (25 cm) x 2

2.2.9 HSE Improvement Seminar

Table 2.4: HSE Improvement Seminar

Month Seminar topics Implementation Time Description

July Special training for driver and

operator

Safety

Engineer/Officer

August 2013

How to operate crane, forklift and

excavator

July Reinforce PTW Implement

HSE Department

From August

All works need PTW to implement

August Apply new

penalty system

HSE Department

September

2013

Money deducted from Subcontractor

salary will be spent for Safety Award and

Safety Facilities. August Make man

basket for

emergency case

HSE Department

September

2013

For lowing injury person at restricted area

(Turbine, Transformer, etc).

September Refreshment training

HSE Department Sep-Oct

2013 PTW, Lifting, Working at height, Accident cases

September Fire Fighting drill

HSE Department

Oct 2013 Fire watch man and safety staff operate fire water truck periodically

October Enhance environmental

management

HSE Department

Nov 2013

Hazardous waste management

October Fire-fighting drill

HSE Department

Nov 2013 Fire watch man and safety staff operate fire water truck periodically

November Zero incident strategy

HSE Department Nov 2013 to

Dec 2013 Prevention all accident until end of this year

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Month Seminar topics

Implementation Time Description

November Fire-fighting drill

HSE Department

Dec 2013 Fire watch man and safety staff operate

fire water truck periodically December Zero incident

strategy

HSE Department Nov 2013 to

Dec 2013 Prevention all accident until end of this year

December Environment management

Whole of the site

Dec 2013 Hazardous waste management according

to procedure

of 70

2.2.10 Safety Award

Some 20-50 workers received Safety Awards each month during the reporting period. HDEC give out these safety award certificates and 100.000 VND on each first day of a month.

of 70

3. ENVIRONMENTAL QUALITY MONITORING

3.1 Air quality, Noise and Vibration Monitoring

3.1.1 Monitoring of Air quality

The monitoring location, monitoring parameters, monitoring equipment and analyzed methods

for air quality monitoring are presented in Table 3.1

Table 3.1: The monitoring location, monitoring parameters and monitoring equipment and analyzed

methods for air quality monitoring

Monitoring

Location

Monitoring

parameter

Equipment for

monitoring

Monitoring and Analyzed

Method

At two

residential sites

selected in EMP.

Sampling and

analysis for:

+ TSP (1 hr and 24

hrs)

+ PM10 (1 hr and

24 hrs)

Compared to QCVN

05:2013/BTNMT National technical

Regulations on

Ambient Air

Quality.

+ Air Sampler SL-20

SIBATA/Japan

+ Air Sampler SL-

15P SIBATA/Japan

+ Air Sampler

MinivolTM

TAS Metrics/ USA

- Follow the validity Viet Nam

Standard for environment in

TCVN 5067:1995 Air quality Weigh Method for determination of suspended

dusts content.

Monitoring results on air quality and analysis are presented in Table 3.2

Table 3.2: Monitoring results of TSP and PM10

Monitored Points

Results (unit: g/m3)

TSP 1hr

(17h0018h00)

TSP 24hr PM10 1hr

(17h00 18h00)

PM10 24hr

The 7th mobilization: from 10th to 11th July 2013:

KK1

437

288

213

171

KK2

405

272

187

155

The 8th

mobilization: from 15th

to 16th

August 2013:

KK1

491

297

231

193

KK2

442

281

217

175

The 9th


to 14th

September 2013:

KK1

335

249

197

168

KK2

317

223

178

159

The 10th


to 26th

October 2013:

KK1

443

298

184

162

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Monitored Points

Results (unit: g/m3)

TSP 1hr

(17h0018h00)

TSP 24hr PM10 1hr

(17h00 18h00)

PM10 24hr

KK2

451

315

192

178

The 11th

mobilization: from 21st

to 22nd

November 2013:

KK1

289

229

157

145

KK2

273

214

168

127

The 12th


to 20th

December 2013:

KK1

296

231

177

151

KK2

281

222

176

137

QCVN

05:2013/BTNMT

300 200 - 150

Figure 3.1 compares results of 6 monitoring times.

g/m3

600

500

400

300

200

100

KK1 KK2

350

300

250

200

QCVN 05:2013/BTNMT

150

100

50

KK1 KK2

0

The 7th The 8th The 9th The 10th The 11th The 12th

0


TSP 1hr (17h00-18h00) TSP 24hr

250

200

KK1 KK2

QCVN 05:2013/BTNMT

250

200

KK1 KK2

150

150 QCVN 05:2013/BTNMT

100 100

50 50

0

The 7th The 8th The 9th The 10th The 11th The 12th 0


PM10 1hr (17h00-18h00) PM1024hr

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Figure 3.1 The results of 6 monitoring times.

Assessment of the monitoring results:

Through 6 monitoring times during 2 days each in July, August, September, October, November,

December 2013, the results show that:

- The monitoring results for average 1 hr TSP at 2 monitoring points KK1 and KK2 in the

all four monitoring times (July, August, September and October) are higher than the

limited value in QCVN05:2013/BTNMT National Technical Regulations on Ambient

Air Quality(higher than 1,05 1,63 times). Especially the 15th of August monitoring

times, the monitoring results for average 1 hr TSP at 2 monitoring points KK1 and KK2

are higher than the limited value in QCVN05:2013/BTNMT National Technical

Regulations on Ambient Air Quality (higher than 1,47 1,63 times).

- The monitoring results for average 24 hr TSP at 2 monitoring points KK1 and KK2 in all

six mobilizations are higher than the limited value in QCVN05:2013/BTNMT National

Technical Regulations on Ambient Air Quality (higher than 1,07 1,57 times). Especially

the 25th of October monitoring times , the monitoring results for average 24 hr TSP at 01

monitoring point KK2 are higher than the limited value (1,57 times).

- The monitoring results for average 24 hr PM10 at monitoring points KK1 and KK2 in all

six mobilizations are approximations and higher than the limited value in

QCVN05:2013/BTNMT National Technical Regulations on Ambient Air Quality (higher

than 0,91 1,28 times).

- Comparison of monitoring results between KK1and KK2 shows that KK1 has higher

concentrations of air pollutants than those at KK2, because the population density and

roads in coal mines at KK1 is higher than that at KK2.

- The time that concentrations of average 1 hr TSP and average 1 hr PM10 at 2 monitoring

points reach maximum is the rush hour when traffic activities are the highest (17h00

18h00).

- The weather in Mong Duong: During the 2 monitoring times in 2013 (September and

November) is rain, in the 4 monitoring times remaining ( July, August, October and

December) is sunny, dry.

3.1.2 Noise Monitoring


for noise monitoring are presented in Table 3.3

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methods for noise monitoring

Monitoring

Location

Monitoring

parameter

Equipment for

monitoring

Monitoring and

Analysist

Method

At two

residential sites

selected in EMP.

Compared with

Equivalent acoustic

level A, LeqdBA.

Integrating-

Averaging Sound

level meter, Type

6226 ACO/Japan.

Follow the Viet Nam

Standard for environment

TCVN 7878-1: 2008 (ISO

1996-1: 2003); TCVN

7878-2: 2010 (ISO 1996-

QCVN 2: 2003).

26:2010/BTNMT National technical Regulations on Noise.

+ At 01 construction site where workers are impacted

Monitoring results for Noise level are presented Table 3.4

Table 3.4: Monitoring results for Noise at residential sites

Monitored Points

Results LAeq (1h) (dBA)

7h 8h 17h 18h 22h 23h

The 7th mobilization: from 10th to 11thJuly 2013:

KK1 69,7 70,8 63,7

KK2 59,8 61,2 56,4

The 8th mobilization: from 15th to 16thAugust 2013:

KK1 69,5 72,4 66,1

KK2 57,6 59,4 53,7

The 9th mobilization: from 13th to 14thSeptember 2013:

KK1 68,7 70,8 66,9

KK2 62,7 64,1 57,1

The 10th mobilization: from 25th to 26th October 2013:

KK1 69,1 70,3 65,8

KK2 63,1 64,5 58,2

The 11th mobilization: from 21st to 22nd November 2013:

KK1 62,5 68,7 59,6

KK2 60,7 65,9 57,3

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Monitored Points

Results LAeq (1h) (dBA)

7h 8h 17h 18h 22h 23h

The 12th mobilization: from 19th to 20th December 2013:

KK1 63,1 69,3 60,1

KK2 62,2 66,4 58,1

QCVN

26:2010/BTNMT

70 70 55

Figure 3.2 compare results of 6 monitoring times

dBA 80

70

60

50

40

30

20

10

0

80 KK1(7h-8h) KK2(7h-8h) KK1(17h-18h) KK2(17h-18h)

QCVN 26:2010/BTNMT 70

60

50

40

30

20

10

0

KK1 KK2

QCVN 26:2010/BTNMT

The 7th The 8th The 9th The 10th The 11th The 12th The 7th The 8th The 9th The 10th The 11th The 12th

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LAeq1hr (7h-8h) v (17h-18h) LAeq1hr (22h-23h)

Figure 3.2 The results of 6 monitoring times

Monitoring results for Noise at working site are presented Table 3.5

Table 3.5: Monitoring result for Noise at the working site

Monitored Points

Results LAeq (1h) dB(A)

9h 10h

The 7th


to 11th

July 2013:

KK3

73,7

The 8th


to 16th

August 2013:

KK3

73,2

The 9th


to 14th

September 2013:

KK3

78,1

The 10th


to 26th

October 2013:

KK3

77,6

The 11th


to 22nd

November 2013:

Monitored Points

Results LAeq (1h) dB(A)

9h 10h

KK3

75,8

The 12th


to 20th

December 2013:

KK3

76,4

Figure 3.3 compares results of 6 noise monitoring times at working sites .

dBA 79

78

77

76

75

74

73

72

71

70


of 70

LAeq1hr (9h-10h)

Figure 3.3 The results of 6 monitoring times

Assessment of noise monitoring results:

Through 6 monitoring times during 2 days each in July, August, September, October, November,

December 2013, the results show that:

- The monitoring results for noise in the daytime of 7h - 8h during the period of 6h - 21h at KK1 and KK2 are lower than the limited value in QCVN 26:2010/BTNMT National Technical Regulations on Noise; of 17h - 18h during the period of 6h - 21h at KK1 are

approximate and higher than (about 0,72,6 dBA) the limited value in QCVN 26:2010/BTNMT,at KK2 are lower than the limited value in QCVN 26:2010/BTNMT .

- The monitoring results for noise in the nighttime of 22h 23h during the period of 21h-

6h, at KK1, monitored point about 7m from the road are higher than (about 4,6-11,9 dBA) the

limited value in QCVN 26:2010/BTNMT National Technical Regulations on Noise; at KK2,

monitored point about 20 m from the road, are approximate and higher than (about 1,4 - 3,2

dBA) the limited value in QCVN 26:2010/BTNMT National Technical Regulations on Noise.

Caused by transport activities increased on the old 18A road at night such as: carrying coal,

materials.

At the working site: Through 6 monitoring times during 2 days each July, August, September, October, November, December 2013, the results show that:

- The monitoring results for noise at working site in all six monitoring times, noise level monitored in 1 hours at boiler area is about 73,2 78,1 dB(A). If compare with allowable noise level at working place the lower than the limited value in TCVN 3985:1999 (85 dB).

3.1.3 Vibration Monitoring


for vibration are presented in Table 3.6


methods for vibration monitoring

Monitoring

Location

Monitoring

parameter

Equipment for

monitoring

Monitoring and Analyst Method

At two

residential sites

selected in

EMP.

Vibration

Acceleration (dB).

Compared with

QCVN

27:2010/BTNMT National technical

Regulations on

Vibration.

Vibration meter

TYPE 3233 ACO/Japan.

Follow the validity Viet Nam

Standard for environment in TCVN

6963:2001 Vibration and shock Vibration emitted by construction

works and factories Method of measurement.

Monitoring for vibration level was conducted at the same time with noise monitoring at

monitoring points. Vibration is monitored with 3 directions and the highest result is used to

compare with the regulation.

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Table 3.7: Monitoring results for vibration at residential sites

Monitored Points

Results, dB (1h)

7h 8h 17h 18h 22h 23h

The 7th


to 11thJuly 2013:

KK1 58,1 50,5 41,7

KK2 48,3 43,4 37,6

The 8th


to 16th

August 2013:

KK1 48,3 49,1 46,8

KK2 40,4 41,2 38,2

The 9th


to 14th

September 2013:

KK1 46,7 48,3 40,4

KK2 40,1 45,6 36,8

The 10th


to 26th

October 2013:

KK1 47,1 48,5 41,2

KK2 41,3 43,2 37,6

The 11th


to 22nd

November 2013:

KK1 42,3 44,7 40,8

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50

Results, dB (1h)

Monitored Points 7h 8h

17h 18h

22h 23h KK2 39,5 41,3 36,8

The 12th


to 20th

December 2013:

KK1 42,8 45,6 41,1

KK2 40,8 41,9 38,5

QCVN 27:2010/BTNMT

(6h 22h)

75

-

Figure 3.5 compares results of 6 monitoring times

70

dB KK1(7h-8h) KK2(7h-8h) KK1(17h-18h) KK2(17h-18h)

60 45 40

50 35

40 30

25

30 20

20 15

10 10

5

0 0


KK1 KK2


Vibration 1hr (7h-8h) v (17h-18h) Vibration 1hr (22h-23h)

Figure 3.5 The results of 6 vibration monitoring times

Assessment of the vibration monitoring results: Through 6 monitoring times during 2 days each in July, August, September, October, November, December 2013, the results show

that:

- Monitoring results for vibration level at 2 sites during the period of 6h 21h are lower than the limited value in QCVN 27:2011/BTNMT National Technical Regulations on Vibration.

- Construction activities of Mong Duong 1 Thermal Power Plant are implemented during the day time, therefore no vibration is created during the nighttime, from 21h-6h.

3.1.4 Overall Assessment

Implementation of Environmental Management Measures by the Construction contractor has

followed the guidelines under the EMP

Problems Identified and Actions Recommended

During the second 6 months in 2013, construction activities at the site of Mong Duong 1

were more intense than during previous monitoring sessions due to construction activities

now overlapping with erection activities. Therefore, during this period, overall construction

activities had an impact on the air environment (dust) and noise to the nearby residential

areas.

of 70

02 monitoring stations KK1 and KK2 located at residential areas selected in EMP are not

impacted during the construction phase of Mong Duong 1 Thermal Power Plant, but may

have an impact during the operation phase, particularly from the high pollution sources

(boiler, stack etc.).

Air pollution sources (mainly dust) towards the more dense populated residential areas of

Mong Duong Ward which is near the 2 sides of the old No.18A road are due to transport

activities (carrying coal and materials, cars, motorcycles sorting out coal plant (near KK2),

coal discharge area (especially when the wind blows from south-east direction). However,

better quality of the old No.18A road and community awareness of Mong Duong ward

residents was higher so the level of air pollution mitigation was better ( the old 18A road is

cleaned and watered regularly by local people).

Comparison monitoring results (dust) between the first 6 months of 2013 and the second 6

months of construction phase in 2013 shows that the second 6 months of 2013 had a higher

concentration of air pollutants than the 6 months previous. This is mainly caused by

increased transport activities on the new and old No.18 road which influence the resident

area of Mong Duong, especially when the weather in Mong Duong is sunny, hot and dry.

The social environment due to the gathering of large work force at Mong Duong precinct,

which cause the problems regarding to services, food provision etc need to be further

observed

3.2 Water Quality Monitoring

Monitoring is implemented inside and outside of Mong Duong 1 Thermal Power Plant project

within 5km radius

The report on the actual state of the water environment at Mong Duong 1 Thermal Power Plant

project has been prepared with the following purposes:

Domestic sewage water, grey water and subsequence discharge that would impact on ambient

surface water. Thus, during the pre-construction process, samples of 16 sensitive surface water

sites and 20 sensitive underground water sites were selected. The results of the original samples

were carefully recorded (as baseline data) to assess possible changes of the water quality during

construction. The data collected during the preconstruction phase will be compared to the data

obtained during construction and operation to establish sources of pollution and recommend

solutions to reduce possible impacts.

3.2.1 Monitoring parameters and procedures Monitoring parameters:

Ambient surface water: Temperature, pH, TSS, DO, COD, BOD5, Cl-, NH4+, heavy metal (As, Cr, Cd, Cu, Pb, Zn, Ni, Hg, Fe, Mn, Se), oil and grease, Coliform, T-N, T-P.

Underground water: Temperature, pH, TSS, COD, Cl-, NH4+, NO3-, SO42-, heavy metals (As, Cr, Cd, Cu, Pb, Zn, Ni, Hg, Fe, Mn, Se), VOC, SVOC, TPH, oil and grease

and Coliform.

Monitoring procedure

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Sampling, analyzing in

Laboratory

Collecting information relating to the project. Analyzing samples in the laboratory Summarize and handling analytical data. Assessing monitoring results. Prepare evaluation report of water conditions

Propose treatment measures to minimize water environment pollutants (Figure 3.1)

Figure 3.1: Water quality environmental monitoring procedure

Water Environment

monitoring

Measures at Site

Synthesize and Handle

Data

Assess monitoring results

Propose treatment measures to

minimize pollutants.

Preparing report

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3.2.2 Inspection Activities

Monitoring sites

Monitoring site is described in Figure 3.7 below and co-ordinates of sensitive areas are

shown in the Annex

Figure 3.2: Monitoring Sites

Environmental condition at Monitoring times

No rain

No significant events at coastal water sampling times

No significant events at underground water sampling times

Drilling Well Nos. 1, 2, 3, 4, 6, 8 were available for water sample monitoring

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3.2.3 Monitoring results and Assessment

Surface water quality

Water samples were collected from surface water bodies at the project site and its

surrounding area based on Mong Duong and De Dach River to establish the baseline database for

the surface water quality. Eight water samples were collected at the selected locations. The

locations of the surface water sampling points are shown in the Figure 3.7. The coordinates of

the surface water sample points are shown in Table 3.8

Table 3.8: Coordinates of surface water samples

No.

Item

Co-ordinate

Description X Y

Surface water

1

SW-01 10702100 E 2100410 N

Mong Duong river

2

SW-02 10702101 E 2100429 N

Mong Duong river

3

SW-03a 10702108 E 2100408 N

Mong Duong river

4

SW-06 10702125 E 2100512 N

De Dach river

5

SW-07 10702147 E 2100504 N

De Dach river

6

MD-1 107020.170 E 21

003.800 N

Mong Duong river

7

DD-1 107020.934 E 21

004.273 N

De Dach river

8

DD-4 107022.013 E 21

005.147 N

De Dach river

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The surface freshwater resources in the areas affected by the Mong Duong power plant project

development, consist of the lower reaches of the western Mong Duong River which discharges at

the plant site, the lower estuary of the small De Dach River to the north, and the distant Thac

Thay River to the north of Cam Hai commune. Mong Duong River drains a small, sparsely

populated basin from the west that is dominated by an active open pit coal mine The River

passes through Mong Duong town just before discharging into the Luong Gac channel at the

plant site. The analytical results of samples are summarized in the Table 3.9

Table 3.9: Monitoring and analyzing results of surface water

P

ara

met

er

Sampling site

QCVN

08:2008

BTNMT

(B2)

Unit

SW-

01

SW-

02

SW-

03a

SW-

06

SW-

07

MD-

01

DD-1

DD-4

On-site monitoring results

Temp. 0C

28.37

28.04

27.79

27.96

27.07

29.49

28.15

29.14

-

pH

-

7.00

7.35

6.72

6.73

7.05

6.13

5.72

6.90

5.5-9

DO

mg/l

4.7

5.3

5.1

4.3

5.1

3.9

4.3

4.8

2

Laboratory monitoring results

TSS

mg/l

28.25

19.44

15.21

20.95

18.00

38.69

22.60

19.76

100

COD

mg/l

9.8

9.8

8.9

11.5

10.2

16.8

12.0

10.7

50

BOD

mg/l

6.05

5.62

7.05

7.18

7.50

8.53

7.63

6.79

25

Cl-

mg/l

254.34

344.05

587.45

644.36

795.82

169.96

287.09

372.91

-

NH4+

mg/l

0.358

0.283

0.260

0.280

0.234

0.306

0.287

0.262

1

As

mg/l

0.0034

0.0050

0.0036

0.0028

0.0038

0.0038

0.0036

0.0030

0.1

Cr

mg/l

0.0025

0.0020

0.0018

0.0028

0.0019

0.0031

0.0029

0.0027

-

Cd

mg/l

0.0006

0.0009

0.0004

0.0008

0.0005

0.0015

0.0006

0.0004

0.01

Cu

mg/l

0.0044

0.0044

0.0048

0.0138

0.0084

0.0263

0.0149

0.0098

1

Pb

mg/l

0.0072

0.0053

0.0051

0.0067

0.0066

0.0073

0.0056

0.0059

0.05

Zn

mg/l

0.0485

0.0533

0.0471

0.0580

0.0527

0.0740

0.0715

0.0592

2

Ni

mg/l

0.0027

0.0025

0.0017

0.0021

0.0015

0.0024

0.0020

0.0014

0,1

Hg

mg/l

0.0004

0.0003

0.0003

0.0007

0.0005

0.0008

0.0005

0.0003

0.002

Fe

mg/l

0.1817

0.1529

0.0970

0.1307

0.1212

0.3172

0.1605

0.1082

2

of 70

P

ara

met

er

Unit

Sampling site

QCVN

08:2008

BTNMT

(B2)

SW-

01

SW-

02

SW-

03a

SW-

06

SW-

07

MD-

01

DD-1

DD-4

Mn

mg/l

0.2546

0.2164

0.1456

0.2524

0.1895

0.6253

0.3362

0.1614

-

Se

mg/l

0.0009

0.0006

0.0007

0.0006

0.0072

0.0006

0.0008

0.0003

-

Oil and

Grease

mg/l

0.286

0.127

0.053

0.148

0.086

0.269

0.152

0.074

0.3

Coliform

MPN/100ml

587

462

570

680

586

820

690

561

10000

T-N

mg/l

1.61

0.82

0.55

2.13

0.19

3.23

1.72

1.35

-

T-P

mg/l

0.355

0.324

0.281

0.473

0.408

0.378

0.374

0.347

-

Analytical results for collected surface water samples show:

a. pH value of almost samples are within limits permitted by QCVN 08:

2008/BTNMT (B2);

b. NH4+

concentration at sampling sites are within limit permitted by QCVN

10:2008/BTNMT.

c. Heavy metal such as As, Hg, Cd, Pb are harmful to humans and other living organisms.

However, concentrations of metals in the samples are very low, there is not much in

Cd, Hg; measured values are within the limits permitted by QCVN10:2008/BTNMT

(others column).

d. Fe concentrations of 8 stations are lower than QCVN 10:2008/BTNMT.

e. All of oil and grease concentration at surface water sampling sites are within limits

when compared with QCVN 08:2008/BTNMT (B2 column), those concentrations

are not much when comparing with QCVN 08:2008/BTNMT (B2 column)

f. Coliform concentrations of 8 surface water samplings are within limits when

compared with QCVN 08:2008/BTNMT (B2 column).

Coastal water quality

The Mong Duong 1 thermal power plant is situated in the northwest of Bai Tu Long in northern

Vietnam. The coastal zone in this area is typical of Vietnam, which is dominated by vast sandy

sediment deposits that extend from well above the high water mark to beyond 5km offshore.

Coastal water samples were collected at four zones that potentially could be affected in different

ways by the power plan development: (1) near-shore area of Cam Hai commune; (2) at the ash

pond; (3) in the Van Don district (island group) about 1km east of the project site and (4) in the

Luong Gac channel from Cam Hai commune south to Cua Ong.

of 70

At the three points (LG-1; LG-3; LG-4) impact assessment of transportation activities to coastal

water environment is performed. Eight coastal water samples were collected at selected

locations. The locations of coastal water sampling are shown in the Figure 3.2. The coordinates

of the coastal water samples are shown in Table 3.10

Table 3.10: Coordinates of coastal water samples

No.

Item

Co-ordinate

Description X Y

Coastal water samples

1 SW-3b 10702127 E 2100422 N Mng Dng River

2 SW-04 10702150 E 2100420 N Mng Dng River

3 SW-05a 10702111 E 2100456 N D Dch River

4 SW-05b 10702139 E 2100434 N Mng Dng River

5 SW-08 10702119 E 2100539 N Cam Hai Coastal zone

6 LG-1 107022.595 E 21

005.110 N Luong Gac

7 LG-3 107021.275 E 21

004.611 N Luong Gac

8 LG-4 107022.201 E 21003.855 N Luong Gac

The lower reaches of the river starting at Mong Duong town are brackish and strongly influenced

by the tidal cycle of Luong Gac and Bai Tu Long. The delta at the mouth of the river below

Mong Duong town experiences annual flooding resulting from the combination of high runoff

during the rainy season and spring (full moon) tides. Turbidity and suspended sediment loads in

the river are high, which is caused by land erosion from human activity (open-pit coal mining)

and the natural sandy soils of the region. The monitoring and analyzing results of coastal water

samples are presented in Table 3.11.

2nd Semi-annual Environmental Monitoring Report


Table 3.11: Monitoring and analyzing results of coastal water samples

N

o.

P

ara

met

er

Unit

Sampling site

QCV

N

10:20

08/

BTN

MT

(Othe

r)

SW-

3b

SW-

04

SW-

05a

SW-

05b

SW-

08

LG-1

LG-3

LG-4

On-site monitoring result

Temp. 0C

27.33

27.36

27.22

27.64

27.07

26.77

27.21

27.50

-

pH

-

8.17

8.13

7.91

8.32

8.04

8.43

8.13

8.06

6.5-

8.5

DO

mg/l

5.3

5.6

5.1

5.4

5.8

5.4

6.4

5.6

-

Laboratory result assessment of coastal water

TSS

mg/l

10.99

8.50

10.27

9.90

8.94

8.75

8.40

12.32

-

COD

mg/l

7.7

7.8

8.9

8.1

6.2

7.5

7.4

9.2

-

BOD

mg/l

5.98

5.43

5.58

6.67

3.94

4.80

7.03

5.86

-

Cl-

mg/l

1156.

20

1223.

87

1250.

37

12113.

00

1267.

13

1215.

70

1204.

28

1223.

10

-

NH4

+

mg/l

0.217

0.202

0.189

0.169

0.180

0.175

0.146

0.172

0.5

As

mg/l

0.003

8

0.003

0

0.003

4

0.0041

0.003

2

0.003

9

0.003

5

0.002

6

0.05

Cr

mg/l

0.001

9

0.001

6

0.002

0

0.0016

0.002

0

0.002

1

0.001

7

0.001

6

-

Cd

mg/l

0.000

4

0.000

6

0.000

2

0.0006

0.000

3

0.000

5

0.000

2

0.000

4

0.005

Cu

mg/l

0.003

8

0.004

8

0.002

9

0.0032

0.004

7

0.005

7

0.004

4

0.004

3

1

Pb

mg/l

0.005

9

0.005

7

0.004

2

0.0042

0.006

1

0.005

2

0.005

1

0.006

6

0.1

Zn

mg/l

0.044

9

0.047

1

0.037

7

0.0423

0.047

9

0.039

0

0.047

7

0.037

5

2

Ni

mg/l

0.001

4

ND

0.001

8

ND

ND

ND

ND

ND

-

Hg

mg/l

0.000

3

0.000

2

0.000

5

0.0006

0.000

3

0.000

2

0.000

3

0.000

2

0.005

Page 40 of 70



Page 41 of 70

N

o.

P

ara

met

er

Unit

Sampling site

QCV

N

10:20

08/

BTN

MT

(Othe

r)

SW-

3b

SW-

04

SW-

05a

SW-

05b

SW-

08

LG-1

LG-3

LG-4

Fe

mg/l

0.091

1

0.079

2

0.079

6

0.0739

0.071

1

0.101

9

0.097

4

0.081

1

0.3

Mn

mg/l

0.165

7

0.092

2

0.077

0

0.0627

0.052

2

0.024

4

0.021

1

0.022

2

0.1

Se

mg/l

0.000

5

0.000

6

0.000

7

Documents

Environmental Monitoring Report