Environmental Management Plan for the Construction of

Head Office 14 Eglin Road, Sunninghill 2191 Johannesburg, South Africa Tel: +27 11 519 4600 Fax: +27 11 807 5670

www.gibb.co.za

Draft Environmental Management Programme

Transnet Pipelines

Environmental Management Plan for the Construction of Gabions, to protect the

Exposed High Pressure Fuel Pipeline in Moreleta Spruit, Garsfontein, Tshwane Metropolitan

Municipality

January 2013 J31439

1 J31439 _ Transnet S24G - EMP Rev1/ January 2013

Environmental Management Plan for the Construction of Gabions, to protect the Exposed High Pressure Fuel

Pipeline in Moreleta Spruit, Garsfontein, Tshwane Metropolitan Municipality

CONTENTS

Chapter Description Page

1. Introduction 2

2. Purpose of this document 3

3. Environmental Management: Roles and responsibilities 3

3.1 TPL Environmental Specialist 3

3.2 TPL Project Manager 3

3.3 Contractor Project Manager 4

3.4 Environmental Control Officer (Or SHE person) 4

4 Environmental Management Requirements 7

4.1 Section A: Planning and Pre-construction 7

4.2 Section B: Construction 14

4.3 Section C: Operations 20

4.4 Section D: Decommissioning and Rehabilitation 22

5 Annexure 1: Practice Standards for Temporary Stream Diversion 25

6 Annexure 2: Aerial photos of site location 27

7 Annexure 3: Environmental Method Statement 28


1. Introduction

Transnet Pipelines (TPL), a division of Transnet Limited was established in 1995. Pipeline transport is

the transportation of goods through the mode of pipe networks. Products moved in this manner

include liquefied commodities (crude oil, diesel, petrol, jet fuels). Transnet Pipelines owns, maintains

and operates a network of approximately 3000km of high-pressure petroleum and gas pipelines. The

liquid fuels network traverses 5 provinces, Kwazulu-Natal, Free State, Gauteng, North West and

Mpumalanga. The intake stations are the two refineries in Durban, the crude refinery at Coalbrook

(Natref) and the Synfuel plants at Secunda (Sasol 1 and 2).

The pipeline plays a strategic role in the economy of the Gauteng Province, which is considered to be

the hub of South Africa’s economy.

One of the governing acts related to operation and maintenance of petroleum and gas pipelines is

the National Key Points Act (Act 102 of 1980). TPL is governed by this Act; Transnet Pipelines must

thus ensure the safety and security of the pipelines that are under its control.

The section of pipeline that stretches from the OR Tambo International Airport to Waltloo via the

Moreleta Park Area (Refer to Annexure 2), was partly exposed due to erosion within the Moreleta

Spruit. Erosion around this pipeline is considered to be a risk in terms of the safety and security of

the pipeline, and the surrounding environment. If the section of exposed pipeline within the

Moreleta Spruit would have ruptured due to the part exposure, a disaster would have occurred

which would have resulted in significant impacts on the aquatic ecosystem and air quality in the

surrounding area. The biggest hazards that were avoided by installing the gabions, was fire risks and

severe water and soil pollution. Water pollution refers to both surface and ground water. Given

these risks, TPL therefore had to construct and install the Gabions in as short a timeframe as possible

in order to prevent the potential Environmental disaster and to solve the erosion problem.

This document is intended to provide guidance in terms of the Environmental Management

requirements for the Gabions constructed at the section of pipeline located in the Moreleta Spruit in

Pretoria. This document will also provide the minimum standards that the pre-construction phase,

construction phase and post-construction rehabilitation phase needed and needs to comply with.


2. Purpose of this document

To provide the set of standards that was used for the Environmental management during site

establishment and the construction phase of the Gabions.

To provide the rehabilitation requirements for post gabion installation.

3. Environmental Management: Roles and responsibilities.

3.1. TPL Environmental Specialist

TPL Environmental Specialist will be responsible for ensuring that the EMP and associated

environmental documents or requirements are compiled with on the construction site. The

Environmental Specialist will report functionally to the TPL Environmental Manager and

relevant TPL Project Manager.

The specific tasks during the construction stage will include:

Liaison with environmental authorities where necessary.

Review all the environmental documents from the Contractor, including sign off.

Conduct environmental monthly audits of all contractors’ work on site where

necessary

Maintain site documentation of related to environmental management (EMP,

Method statements, audit reports, monitoring results, receipts of waste removal

etc.). Documents to be maintained on the relevant site Documents Control Systems.

Inspect and report on environmental incidents and check corrective actions.

Conduct environmental incidents enquiries.

Review and sign off method statements prepared by Contractors.

3.2. TPL Project Manager

The TPL project manager serves as a point of interaction between the Contractor and

TPL in addressing environmental requirements for the project.

Interact as and when required with TPL Environmental Specialist with regards to

project progress updates.

To incorporated this document into the Contractor agreement.


3.3. Contractor Project Manager

To ensure implementation of the requirements in this document on site, on a daily

basis through supervising the work on site.

Work closely with the ECO to ensure that the requirements contained in section 4 of

this document are delivered.

3.4. Environmental Control Officer (Or SHE person)

The contractor has to assign an Environment Control Officer from its structure whose role

will entail the following:

Prepare activity based environmental method statements where required.

Ensure that environmental issues receive adequate attention in the site induction

training.

Prepare and conduct awareness training (posters, toolbox talks, and signage) for

contractor’s personnel on site.

Implementation of environmental – related actions arising out of minutes from SHE

Meetings.

Conduct daily or weekly inspection of the work area using an environmental checklist

and keep records on file.

Monitor compliance with the EMP and environmental method statements.

Maintain site documentation related to environmental management (permits, EMP,

Method statements, audit reports, monitoring results, receipts of waste removal,

etc.) These documents need to be stored in the relevant site Documents Control

System.

Inspect and report on environmental incidents and check corrective actions.

Keep photographic records of all environmental incidents.

Keep records of environmental incidents, hazardous substance register, complaints

register and environmental non-compliance register.

Take required corrective actions within specified time frame.

Compilation of project environmental management file.


The key environmental deliverables from the contractor’s environmental personnel will

include the compilation of:

Project Environmental inspection checklist.

Weekly inspections/environmental audit reports.

Methods statements register.

Environmental incidents register.

Minutes of the SHE meetings.

Environmental non-conformance register.

Complaints register.

Site decommissioning inspections.


Organogram for Construction - Environmental Management Plan

TPL Project Manager

Plans, design and prepare

project specification, tender

and contract document

Environmental Control Officer

Implement EMP

requirements during

construction, operation and

rehabilitation phases

Contractor project manager

Construct the gabions

according to specification

and in a manner ensuring

compliance with the EMP

TPL Environmental Specialist

Monitoring of compliance

with the EMP


4. Environmental Management Requirements

4.1. Section A: Planning and Pre-construction Phase Activities

ACTIVITY MITIGATION MEASURE RESPONSIBILITY FREQUENCY METHOD

A.1. Construction Camp set up Careful planning of the construction camp can ensure that the time and costs associated with environmental management and rehabilitation are reduced.

A.1.1 Layout

(a) The choice of the Contractor’s camp requires the TPL Project Manager permission and must ensure that the camp is located outside the wetland area.

(b) The contractor should submit plans of exact location, extend and construction details of the temporary construction camp facilities to TPL Project Manager for approval prior to establishment of the camp. The layout plans should

reflect the proposed

camp’s location in

relation to the existing

infrastructure on site and

any environmental

sensitive areas (e.g.

wetlands, grasslands,

etc.) where applicable.

Access to the

construction camp must

be through an existing

route.

(c) If the contractor chooses to locate the camp on private land, he must get prior written permission from both the TPL Project Manager and the land owner.

(d) The construction camp can thus be comprised of:

ECO/CPM ECO/CPM CPM CPM

During surveys and preliminary investigations and prior to moving onto site. Prior to moving on site Prior to moving on site During site set-up



a. Site office b. Ablution facilities c. Designated first

aid area d. Eating area e. Storage areas

A.1.2 Ablutions (a) Temporary chemical toilets

must be provided by a contractor. Such toilets must be available for all site staff, both at the camp and on site as agreed by the CPM. Toilets should be no closer than 15m from the wetland.

(b) Under no circumstances may open areas or surrounding bush be used as toilet facilities.

A.1.3. Provision for camp waste disposal (a) Bins and skips shall be

provided at convenient intervals for disposal of waste within the construction camp.

(b) Bins should have a liner bag for efficient control and safe disposal of waste.

(c) Recycling and provision of separate waste receptacles for different types of waste should be encouraged.

CPM CPM/ECO CPM/ECO ECO ECO

During site set up. During site set up. During site set up. During site set up. On-going

A.2 Establishing storage areas Storage areas can be hazardous and unsightly. These storage areas can also cause environmental pollution if not designed and

A.2.1. General Substances and Materials (a) When deciding on the

location of temporary stockpiles, the following needs to be considered: Floodplain limits, wetlands, proximity to other bodies of water, and the length of time the stockpile will exist. Additionally all stockpiles

ECO

During site set up.



managed properly.

should be located away from sensitive ecosystems.

(b) Storage areas must be designated, demarcated and fenced if necessary.

(c) Storage areas should be secured, to minimize the risk of crime and contamination.

ECO ECO

During site set up. During site set up.

A.2.2 Hazardous Substances and Materials (a) The contractor indicated that

no fuel or hazardous liquid substances will be stored on site. However, should it happen that there is a need to store fuel on site; it must be stored in a bunded area.

(b) Hazardous chemical working/refueling areas must be bunded with an impermeable liner to protect the soil. This can be done using a plastic liner covered with soil.

ECO ECO

During site set up During site set up

A.3 Materials: Management and sourcing Materials must be sourced in a legal and sustainable way to prevent off-site environmental degradation.

A.3.1. Source of Materials (a) Contractors shall where

possible prepare a source statement indicating the sources of all stones to be used in Gabion construction. The source statements should be submitted to the TPL Project Manager.

(b) Where possible, a signed document from the supplier of natural materials should be obtained confirming that they have been sourced in a sustainable manner, in compliance with the relevant environmental legislations.

(c) Where materials are borrowed mined, proof must be provided of authorization to utilize these materials from the landowner/minerals rights

TPL Environmental Specialist ECO ECO

Pre-project commencement



owner and the Department of Minerals and Energy.

A.4. Education of site staff on General Environmental Conduct These points must be communicated to all staff before the project commence on site.

A.4.1. Environmental Education and Awareness Ensure that all site personnel have a basic level of environmental awareness training. Topics covered should include:

What is meant by ‘Environment’?

Why do we have to protect the environment?

How construction activities can impact on the environment.

How can these impacts be mitigated.

Awareness of emergency and spills response provisions.

Social responsibility during construction e.g. being considerate to local residents.

It is the contractor’s responsibility to provide the site foreman with no less than 1 hour’s environmental training and to ensure that the foreman has sufficient understanding to pass the information onto the construction staff. (a) Translators are to be used

where necessary. (b) The use of pictures and real-

life examples is encouraged as these are easier to remember.

(c) The need for a ‘clean site’ policy also needs to be explained to the construction workers.

ECO

During staff induction

A.4.2. Worker Conduct on Site A general regard for the social

ECO

During staff



and ecological well-being of the site and adjacent areas is expected of the site staff. Workers need to be made aware of the following general rules:

No alcohol/drugs to be present on site.

No fire arms allowed on site or in vehicles transporting staff to/from the site (unless by security personnel.)

Prevent unsocial behavior and excessive noise.

Construction staff is to make use of facilities provided for them, as opposed to ad hoc alternatives.

Trespassing on private/commercial properties adjoining the site is forbidden.

Driving under the influence of alcohol is prohibited.

ECO

induction During staff induction, followed by on-going monitoring.

A.6. Soil Erosion Stripping of Vegetation during set up activities on site greatly increases the risk of erosion.

(a) The time that stripped areas

are left open to exposure should be minimized wherever possible. Care should be taken to ensure that lead times are not excessive.

ECO/CPM

Throughout the duration of the project.

A.7. Water Quality Incorrect disposal of substances and materials and polluted run-off can cause serious negative impacts on ground water.

(a) Equipment and machinery

must be in good operation condition, clean (power washed), free of leaks, excess oil and grease.

(b) Ensure that machinery is operated from the riverbank and not in the stream channel to avoid disturbance to the riverbanks.

ECO ECO




(c) Remove excavated materials and debris from the site, and store it in a stable area above the active floodplain of the stream, as far as possible from the channel and preferably outside the riparian zone.

(d) Minimize the amount of in stream water required and complete the work as quickly as possible.

ECO ECO


A.8. Conservation of flora, fauna and sensitive habitats Care must be taken to conserve existing plants, animals and surrounding habitats.

A.8.1 Flora and Fauna (a) Consultation with the City of

Tshwane Nature Conservation staff must be undertaken to confirm if any protected species that require special attention during construction are present on the site.

(b) Minimizing the extent of the area where work is taking place and other measures deemed to be adequate.

(c) Temporary stream diversion is to be undertaking in accordance with the practices in Annexure 1.

(d) Methods statement must be prepared on how the construction area will be kept dry.

ECO ECO ECO CPM

Prior to commencement with work. During surveys, preliminary investigations and on-going. During site set up. During site set up.

A.9. Set up of waste management activities

A.9.1 Waste management (a) A dedicated area must be

allocated for waste sorting and storage.

(b) Individual waste skip or wheelie bins for different

ECO ECO

During site set up During site set up



types of waste should be provided.

(c) Waste must be regularly removed from site and disposed of at a registered waste disposal facility.

(d) The CPM is to keep records of safe disposal.

CPM

On-going

A.10. Security and safety

A.10.1. Risk Associated with materials on site (a) Material stockpiles or stacks

such as rocks must be stable and well packed to avoid collapse and possible injury to site workers.

(b) No materials are to be stored in unstable or high risk areas such as in floodplains or wetlands.

ECO/CPM

On-going


4.2. Section B: Construction Phase Activities


B.1 Site Access B.1.1 Access to the site (a) Access to the Working area

should be limited to one route. Heavy machinery such as TLB’s should only access the wetland area, if there is a real need to do so. Alternative equipment to do the job such as the use of a bob cart should be considered in order to minimize the impact on the wetland.

(b) Unnecessary compaction of soils by heavy vehicles must be avoided where possible. Equipment or machinery required for work on site must be restricted to working areas.

(c) Cognisance of machinery/vehicles weight must be taken into account in order to minimize the impacts.

CPM/ECO CPM

On-going On-going

B.2. Maintenance of construction camp

B.2.1 Ablution (a) Chemical toilets will be

provided where no ablution facilities are available. These chemical toilets need to be maintained and managed to ensure safety and to reduce possible impacts.

(b) The contractor needs to ensure that open areas or the surrounding bush are not abused in anyway

B.2.2. Eating Areas (a) Eating areas should be

serviced and cleaned regularly to ensure the highest possible standards of

CPM ECO ECO

On-going Weekly inspection Weekly inspection



hygiene and cleanliness. (b) All litter throughout the site

should be picked up and placed in the bins provided.

ECO

Daily

B.2.3. Housekeeping (a) The contractor shall ensure

that his camp and working areas are kept clean ad tidy at all times.

ECO

Weekly

B.3. Staff Conduct

B.3.1. Environmental Education and Awareness (a) The contractor must monitor

the performance of construction workers to ensure that all the topics that where covered in the induction meeting is properly understood, and followed.

ECO/CPM

Daily

Toolbox talks and lunchtime Q&A.

B.4. Soil erosion

B.4.1. Topsoil stripping and stockpiling Once the area has been cleared of vegetation, the top layer of soil (usually 150mm), should be removed and stockpiled in a designated area.

ECO

On-going

B.5. Protection of the natural environment. This section aims to ensure that the impacts from construction activities on plant and animal habitats are reduced and mitigated.

B.5.1. Flora, Fauna and sensitive habitats (a) Work is to be restricted

within the demarcated areas. (b) No vegetation should be

cleared for access purposes. Vegetation clearance will be limited to the construction area.

(c) The contractor shall not in any way modify nor damage the bed of the streams or wetlands, other than the section required for gabion construction. The disturbance shall be minimized through the use of light machinery. Stones for

ECO CPM/ECO

On-going On-going

ECO needs to develop a site vegetation protection and rehabilitation plan to monitor indigenous and alien species.



gabion construction and other materials must be delivered to the construction area using wheelbarrows where possible, or low weight machinery, like a bob cat.

(d) The contractor is to consider manual excavations where feasible.

B.6. Waste Management Activities in the construction site such as office work, usage of construction materials, etc., generate different types of waste that requires to be managed properly. These wastes could result in environmental pollution such as soil contamination/ pollution or health hazards to employees working on-site, if not managed properly.

B.6.1 On-site waste management (a) Waste is grouped into

“general” or “hazardous”, depending on its characteristics. The classification determines the handling methods and the ultimate disposal of the material. The Contractor ECO must classify waste into general or hazardous based on the toxicity or hazard nature of waste.

(b) Waste must be placed in the designated or marked skips/bins which must be regularly emptied. These should remain within the demarcated areas and should be designed to prevent refuse from being blown out by wind.

(c) Separation of waste and recycling of paper, glass, cans, scrap, metals, plastic bottles, etc., must be considered prior to disposal. The disposal at the landfill site should be considered as the last option, after having taken into consideration the prevention of waste generation, reduction waste generation, reuse and recycling.

(d) Hazardous waste that require disposal (oily rags, used fuel/oil, etc.) must be

ECO ECO ECO ECO

During the start-up of construction on site. Daily On-going On-going

ECO and CPM needs to ensure that all construction staff is educated on the site waste management plan.



placed in a suitable leak proof skip or wheelie bin for disposal at an approved hazardous waste disposal facility.

(e) The contractor is responsible for arranging the removal of all waste from site generated through construction activities. Waste must be removed to the appropriate disposal and recycling facilities.

ECO

During commencement of construction.

(f) Should chemical toilets be

used, an appropriate contractor must be employed to service these facilities on an ongoing basis. All waste generated from the chemical toilets must be disposed of at an approved waste water treatment facility or works, in terms of section 19 of the National Environmental Management Waste Act 59 of 2008 or section 20 of the Environmental Conservation Act 73 of 1989.

(g) No burning and littering of waste on site should be allowed.

(h) Request the following from the waste contractors that are used to collect waste:

Copies of the weighbridge receipt from the waste removal contractor for all waste collected on site.

Obtain copies of the environmental authorization (in terms of section 19 of the National Environmental Management Waste Act 59 of 2008 or

ECO CPM CPM CPM

As and when required. On-going During waste collection Prior to signing an agreement with the waste removal contractor.



section 20 of the Environmental Conservation Act 73 of 1989) of the facilities that are used to recycle, treat and dispose of waste, and kept on the environmental file.

B.7. Construction vehicles/ equipment

Engine machines such as compressors, pumps, air conditioners and arc welders can have small leaks (usually oil) that can accumulate to become spills, which require clean-up. These leaks become more evident if the equipment remains in the same place for an extended period of time. Damaged fuel tanks, fuel hoses, and fuel pumps can be sources of significant fuel leaks. Hydraulic systems can blow gaskets or hoses resulting in large Quantities of hydraulic fluid spilled to the ground. (a) Vehicles and machinery are

to be kept in good working order and to meet manufactures specification for safety, fuel consumption and emission.

(b) Should excessive emissions be observed, the site manager needs to implement an effective vehicle and equipment service and maintenance plan.

(c) Vehicle parking and equipment storage must be parked on a hardened surface area such that oil, fuel and other fluid leaks do not pollute soil or water sources.

CPM CPM CPM

On-going On-going On-going

CPM must follow a detailed checklist for machinery and equipment maintenance.



B.8. Emergency Response This section aims to provide measures to manage spillages from equipment used on site and measures for other construction materials handled on site.

The contractor shall take into account the following prevention measures to be applied during spillages. (a) Immediately repair all leaks

of hydrocarbons, oil, etc. (b) Take reasonable measure to

prevent the spills or leaks. (c) Dispose contaminated

materials to a location designated thereto.

(d) The contractor shall have its own spill response plan in the event of any spills (oil, fuel, hazardous materials) from his machinery or equipment used on site.

ECO/CPM ECO/CPM

During spillages During spillages

The ECO and contractor must ensure that the Emergency response procedure is well understood by all workers on site and that a summary is available for site visitors.


4.3. Section C: Operation Phase Activities


C.1. Gabion Structural integrity

(a) The structural integrity of

the gabions needs to be

check at regular

intervals.

(b) Check the shape of the

gabions.

(c) The gabions need to be

monitored to ensure that

the lids are still securely

closed.

(d) The Reno-mattress lining

the stream floor around

the gabion, must be

checked and monitored

with the gabions.

TPL Servitude Supervisor TPL Servitude Supervisor TPL Servitude Supervisor

During winter the gabions only needs to be monitored in the first week of march and the last week of August. During the Summer rainfall period from September to February, the Gabions must be monitored on a bi-monthly basis.

This requirement is to be included in the servitude TPL Servitude Inspections Procedure

C.2. Downstream and upstream erosion monitoring

(a) The region below and

adjacent to the Gabions

needs to checked for

signs of erosion.

(b) In water inlet side of the

gabion needs to the

checked and monitored

to identify early signs of

erosion.

TPL Servitude Supervisor TPL Servitude Supervisor

The monitoring of the site needs to occur on a monthly basis. If signs of erosion are spotted in the early stage, it can be mitigated and managed to prevent any further problems.

The TPL Environmental specialist needs to do monthly site visits, especially in summer during the heavy rain season when the stream is flowing at its strongest.

C.3. Gabion Misuse

(a) The entrance gates to

the wetland needs to be

locked at all times. The

gabions offer a ‘safe’

crossing point over the

river. High traffic

volumes over the

gabions might affect the

TPL Environmental Specialist


structural integrity of the

gabions. TPL is to liaise

with The City of

Tshwane, who is

responsible for the gates.

C.4. General (a) The gabions provide a

benefit, as it will act as

trap for litter and debris.

The gabions must

however be kept clear of

litter and debris flushed

against it, since the flow

of water through the

gabion will not be free

flowing, thus affecting

the gabion functioning.

TPL must liaise with The

City of Tshwane

regarding the

implementation of this

measure.

City of Tshwane

The cleaning of the gabions needs to occur regularly.

The ECO and TPL Environmental Specialist needs to draw up a cleaning programme for the City of Tshwane. The cleaning and clearing of the gabions are essential for the successful and optimal functioning thereof.


4.4. Section D: Decommissioning and Rehabilitation Phase Activities


D.1. Construction Camp

(a) All structures

comprising the construction camp are to be removed from the site.

(b) The area that previously housed the construction camp has to be checked for oil and fuel spills from construction vehicles and equipment, hazardous substances and paint. These spills need to be cleaned.

(c) All areas that were vegetated prior to construction will be prepared in such a manner that it creates the ideal environment for vegetation re-growth.

CPM CPM CPM

At project completion. At project completion. At project completion.

Site inspection Detailed site inspection Detailed site inspection

D.2. Vegetation (a) All areas that have

been disturbed by the construction activities (including the construction camp area) must be cleared of aliens

(b) Disturbed areas will be left to regenerate naturally, and if intervention is required in terms of re-vegetation, it will be undertaken. If any alien vegetation is found it will be removed in order to encourage colonization of indigenous species.

ECO ECO

At project completion At project completion

Monthly Detailed site inspection Monthly Detailed site inspection

D.3. Wetland Rehabilitation

D.3.1. General


(a) Ensure that the area

where the gabions have been installed is free of debris and litter prior to diverting the stream back to its original flow.

(b) The natural ground level of the wetland area should be maintained by ensuring that no mounds of soil are left unattended.

(c) Surfaces are to be checked for waste products and spoiled soil, this then needs to be removed and treated in a manner approved by the ECO.

(d) Once the work is complete, the temporary stream diversion shall be removed. The temporary channel shall be properly filled and stabilized using appropriate erosion control practices.

D.3.2. Gabion Redesign (a) The Wetland Specialist

study found that the

current gabion design

is flawed, as erosion

and gabion structural

failure has been

observed at site 2.

(b) New designs in

consultation with a

wetland rehabilitation

specialist, must be

developed and

implemented before

the next rain seasons

ECO ECO ECO ECO Engineer Engineer & TPL Project Manager

At project completion At project completion At project completion At project completion Within stipulated timeframes of the Environmental Authority.

A method statement for the redesign and implementation must be developed by TPL and CPM. Monitoring to be undertaken by ECO during implementation of rehabilitation process.


Redesign will have to focus on the following: (a) Gabion direction and

height.

(b) Spill way width.

(c) Thickness and depth of

reno-mattress.

(d) Length of reno-

mattress.

(e) Post-construction soil

leveling and treatment.

(f) Filling rock size – bigger

rock is better because

it is allows for more air

spaces between rock,

which allows more

water to pass through.

D.4. Materials and infrastructure

(a) Fences, barriers and

demarcations associated with the construction phase are to be removed from the site.

(b) All residual stockpiles must be removed to spoil or spread on site as directed by the TPL Project Manager

(c) All left over building materials must be returned to the contractor depot or removed from the site.

(d) The contractor must repair damage that the construction works has caused.

CPM CPM CPM/ECO CPM/ECO

At project completion At project completion At project completion At project completion

D.5. General (a) Rehabilitation of

disturbed areas should be undertaken in such a manner that it satisfies the guidelines of the City of Tshwane Nature Conservationist.

ECO&TPL Environmental Specialist ECO, TPL

On completion of construction phases On


(b) A meeting is to be held on the site between the City of Tshwane Nature Conservationist, TPL Environmental Specialist, Project ECO, and the Contract Project Manager to approve all the Remediation activities and to ensure that the site has been restored to a similar pre-construction phase condition.

Project Manager/ Environmental Specialist

completion of construction phases


Annexure: 1 PRACTICE STANDARD FOR TEMPORARY STREAM DIVERSION

1. Definition

A temporary channel is used to convey stream flow around a construction site. 2. Purpose

The purpose of this practice is to maintain stream flow, water quality, and natural habitat

while providing a dry and safe working area.

To allow for the installation of gabions in a perennial stream with minimal impacts on stream

turbidity. By temporary diverting the stream’s base flow away from the construction area

and into a stable channel system.

3. Conditions where practice applies

This practice applies to construction sites where:

Work within a stream, or part of a stream is required

Flows are low enough and/or the watershed is small enough to be handled in a diversion

channel, pipe or by a pump.

4. Criteria

The construction of any temporary stream diversion shall not cause a significant water level difference upstream or downstream of the project site. The velocity of the stream flow offsite shall be maintained. Erosion and sediment control devices shall be in place prior to starting construction to prevent sediment from entering the diversion or the main stream and shall include temporary stabilization of the inlet and outlet of the temporary stream diversion. The inlet and outlet of the temporary stream diversion shall be stabilized using proper erosion control techniques. The type of diversion shall be selected based on the site specific conditions, the amount of time the practice will be in use, and the anticipated flow rates. Timing – The construction shall be planned to minimize the time needed for the temporary stream diversion. The temporary stream diversion shall be properly stabilized prior to accepting flows. The temporary stream diversion shall be removed as soon as practicable and only after the worksite on the existing stream has been stabilized. Removal – Once the work is complete the temporary stream diversion shall be removed. The temporary channel, if used, shall be properly filled and stabilized using appropriate erosion control practices. 5. Considerations

Extreme care shall be taken to minimize the impact on the existing ecosystem. The design

and implementation of the temporary stream diversion should consider the environmental

impacts. Clearing of the streambed and banks should be kept to a minimum.


In order to reduce the impact on aquatic organisms, consideration should be given to mimic

and protect the existing stream environment. Also, the design of the temporary stream

diversion should take into account the existing conditions and wildlife.

Diversion ditch width must be approximately the same width as the natural watercourse.

Ensure the diversion ditch contains no ridges or depressions that could initiate erosion of the

watercourse floor.

The work area should be isolated from all flowing water in a manner that does cut off the

flow to downstream portions of the stream at any time during construction.

Any machinery must work from the top of the bank of the stream and not in the stream

channel, where possible.

Upon completion of works, restore and stabilize the watercourse to its original configuration

to prevent bank erosion around the temporary diversion.

The temporary stream diversion can also be used to divert flow from a drainage ditch or

other drainage channel. The appropriate type of temporary stream diversion should be

selected based on the specific site conditions and anticipated flow amounts.

6. Plans and Specifications

Plans and methods statement for creating a temporary stream diversion shall be keeping with this standard and shall describe the requirements for applying the practice to achieve its intended purpose. At a minimum include the following items, as appropriate:

Channel location and alignment

Grade, depth and width

Outlet stabilization

Sediment and erosion control practices and locations

Location of excavated material stockpiles

All plans shall include the installation, inspection, and maintenance schedules with the responsible party identified.


Annexure 2 AERIAL PHOTOS OF THE SITE LOCATION


Annexure 3

ENVIRONMENTAL METHOD STATEMENT

Contract: Date: dd/mm/yy Proposed Activity Work to be undertaken: Where the works are to be undertaken: Start and end date of the works for which the method statement is required: Description of how potential environmental impacts will be mitigated or managed: Declarations: 1.

2.

3. Employer’s Environmental Control Officer

The work described in this Environmental Method Statement, if carried out according to the methodology described, is satisfactory to prevent the environmental impact:

____________________ _________________________ Signature Print Name ____________________ Date

Start Date: End Date:


4. Person undertaking the works

I understand the contents of this Environmental Method Statement and the scope of the works required of me. I further understand that this Environmental Method Statement may be amended on application to other signatories and that Employer’s Environmental Manager and Project Manager will audit my compliance with the contents of this Environmental Method Statements. ___________________ ________________________ Signature Print Names 5. Approving Authority (i.e. Employer’s Construction Manager)

The works describe in this method statement are approved. ___________________ ____________________ ________________________ Signature Print Name Designation ___________________ Date