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NS174C Environmental Procedures Supplementary Notes

Environmental Handbook for Construction and MaintenanceJuly 2017

Disclaimer

This document has been developed using information available from field and other sources and is suitable for most situations encountered in Ausgrid. Particular conditions, projects or localities may require special or different practices. It is the responsibility of the local manager, supervisor, assured quality contractor and the individuals involved to adequately manage work practices in accordance with environmental legislative requirements.

Non Ausgrid workers must rely on their own systems to identify all environmental risks and sources of existing or potential environmental harm and introduce measures and procedures to address these risks or sources of harm. This Handbook may form part of those systems.

Ausgrid disclaims any and all liability to any person or persons for any procedure, process or any other thing done or not done, as a result of this Handbook.

The Handbook does not attempt to cover work health and safety (WHS) requirements. Refer to your local safety advisor for WHS requirements. Ausgrid staff can refer to the Be Safe system on The Wire.

© Copyright Ausgrid Environmental Services

This document must not be reproduced in whole or in part or converted to machine readable form or stored in a computer or imaging system without the written permission of Ausgrid.

Issue No.

Date Changes

1 March 2006 New issue. Replaced EG 144 standard environmental management plan (SEMP). More user friendly and informative. Added pictures, photos and process diagrams. New housekeeping section.

2 July 2008 Updated with regulatory changes, new work practices and feedback provided by employees. More pictures, diagrams and tips to help identify potential environmental issues and good controls.

3 July 2011 New format and revised section grouping/numbering. New information on Ausgrid’s environmental management system (1.1), policy (1.3), legislation (1.5), EIA worksheets (1.6) and waste tracking and licensing (4.2). New environmental inspection checklist section (8). Changed controls regarding construction noise (2.4/2.5), tree protection zone (5.1) and pathogens (5.4).

4 July 2014 New community relations section (1.6), pre-works summaries (most sections) and acid sulfate soil indicator (4.1). New controls for access tracks (2.1), structural root zone (5.1) and undisturbed land (6.1). Changed controls regarding stockpiling (2.1) and notification times prior to starting work (1.6, 2.4). Reference to The Wire and field tablets and other minor improvements throughout.

5 July 2017 Updated with regulatory changes, new format and section order, consistent call-out boxes on when to contact Environmental Services, hyperlinks to the Environmental Index and Handbook reference material, alignment of controls with the WebGIS EL, improved flowcharts and updated contacts. New sections on EMF (4.3), use of recovered materials (5.4) and wildlife around the network (5.2.4). New requirements relating to PCB labelling (2.4), mangrove permit and OEH Protocol (6.1). New information on asbestos waste and soil from 132kV cable trenches (5.3).

Revision History

1

PrefaceAusgrid’s NS174C Environmental Handbook (this Handbook) is issued under the provisions of the corporate Environment Policy. The Handbook prescribes the minimum environmental controls for work carried out on Ausgrid’s network.

The Handbook is designed to provide guidance on complying with environmental laws.

The Handbook applies to all workers involved in the construction and maintenance of our network. Everyone must comply with the requirements of the Handbook and have a copy readily available at the work site.

One of Ausgrid’s core values is to ‘Work Safe, Live Safe’. We demonstrate this value by doing our best to protect ourselves, other people and the environment. This Handbook outlines the process for planning and performing our work in an environmentally sustainable responsible way.

Sam Sofi General Manager Asset Management & Operations

July 2017

2

5 1 INTRODUCTION

6 1.1 Environmental management system

7 1.2 Legislation

9 1.3 Responsibilities

11 1.4 Environmental documents

12 1.5 Environmental planning

15 1.6 Community engagement

Contents

40 4 EMISSIONS

40 4.1 Air

42 4.2 Noise and vibration

46 4.3 Electric and magnetic fields

16 2 POLLUTION CONTROL

16 2.1 Erosion and sediment control

24 2.2 Water discharge

27 2.3 Oil, fuel and chemicals

31 3 HAZARDOUS MATERIALS

31 3.1 Asbestos

34 3.2 Polychlorinated biphenyls

37 3.3 Pesticides

48 5 CONTAMINATION AND WASTE

48 5.1 Contaminated land

50 5.2 Acid sulfate soils

52 5.3 Waste management

58 5.4 Use of recovered materials

3

6 ECOLOGY 60

6.1 Vegetation 60

6.2 Wildlife habitat 66

6.3 Biosecurity 68

6.4 Total Fire Bans 71

7 HERITAGE 73

7.1 Aboriginal heritage 73

7.2 Non-Aboriginal heritage 75

10 ENVIRONMENTAL INCIDENTS 82

10.1 Spill response procedure 83

9 HANDBOOK CHECKLIST 80

8 RESOURCES 78

8.1 Resource use 78

8.2 Water use 79

12 GLOSSARY 86

11 EMERGENCY CONTACT NUMBERS 84

4 Introduction

All of our actions can impact on our environment. Our goal is to comply with regulations, reduce our impact on the environment and continually improve our performance.

Put simply, we all need to exercise due care, follow procedures such as this Handbook and speak up if something is wrong or

could be improved.

The environment is everyone’s responsibility.

5Introduction

1 IntroductionSECTION DESCRIPTION

1 Introduction Provides an overview of Ausgrid’s EMS, defines responsibilities, summarises key legislative requirements and explains additional documents that might apply to the work.

2 Pollution control3 Hazardous materials4 Emissions5 Contamination and waste6 Ecology7 Heritage8 Resources

Specifies the environmental controls and provides guidance for all construction and maintenance work on Ausgrid’s network.

9 Handbook checklist Provides prompts to help evaluate compliance with the requirements of this Handbook.

10 Environmental incidents11 Emergency contact numbers

Describes what to do in the event of an environmental incident, including Ausgrid’s spill response procedure and provides a list of emergency contact numbers.

12 Glossary A full list of terms used throughout this Handbook.

This Handbook forms part of Ausgrid’s Environmental Management System (EMS) and provides guidance for complying with Ausgrid’s environmental responsibilities.

This Handbook specifies environmental controls required for all construction and maintenance work on Ausgrid’s network.

Where the works cannot meet these environmental controls, further advice is to be sought from Ausgrid’s Environmental Services (refer to section 11 Emergency contact numbers).

Additional project specific controls may be required by other documents as explained in section 1.4 Environmental documents.

This Handbook applies to all Ausgrid workers (employees, contractors) and accredited service providers (ASPs level 1 and 3) involved in the construction and maintenance of Ausgrid’s network.

How to read this Handbook

Pink call-out boxes identify triggers requiring referral to Environmental Services.

Blue call-out boxes are definitions specific to a section of the Handbook.

Bold items refer to sections, terms or acronyms defined within this Handbook.

Hyperlinked items link to documents that are available in the Handbook reference material via enviro.ausgrid.com.au/handbook.

Definitions

EMS means Environmental Management System.

WHS means work health and safety.

Workers as per the WHS legislation definition.

http://www.enviro.ausgrid.com.au/handbook


6 Introduction

1.1 Environmental management systemFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Ausgrid’s EMS provides a structured approach to managing our environmental impacts. The EMS includes procedures, training, records, inspections, objectives and policies.

Ausgrid’s EMS is certified to the International Standard Organisation (ISO) 14001 Environmental Management Systems.

At a company level, our EMS involves:

– planning to implement our environmental policy

– implementing programs and procedures identified during planning

– monitoring our performance

– taking action to continually improve

– periodically reviewing the entire system.

This is a repeating cycle of plan, do, check and act.

At a project level the principles are the same. The key steps include:

1.1.1 Plan

(a) Make accessible on-site all required environmental documentation relevant to the project (refer to section 1.4 Environmental documents).

(b) Understand your environmental responsibilities (refer to section 1.3 Responsibilities).

(c) Think about the site, type of works, weather conditions, neighbours, surrounding environment, project controls, emergency controls and what could go wrong. Document in the HAC where relevant.

1.1.2 Do

(a) Implement the controls from environmental documentation relevant to the project (refer to section 1.4 Environmental documents).

(b) Respond to environmental incidents in accordance with section 10 Environmental Incidents.

1.1.3 Check

(a) Monitor the works and controls (refer to section 9 Handbook Checklist).

1.1.4 Act

(a) Act if something is not right or could be improved.

(b) Contact Environmental Services if required by this Handbook (refer to the pink call-out boxes in each section) or if assistance is required.

ACT

CHECK

DO

PLAN

http://enviro.ausgrid.com.au/handbook





7Introduction

1.2 LegislationFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

There are over 50 environmental laws that relate to Ausgrid’s activities. The laws are designed to ensure the protection of the environment and can either prohibit, restrict, control or authorise certain activities.

What do environmental laws require?

Put simply, the law requires Ausgrid workers to:

– conduct proper environmental impact assessments (EIAs) and obtain the required planning approvals, licences or permits

– avoid unauthorised harm to the environment

– immediately report environmental incidents.

This Handbook aims to:

– help identify environmental risks

– provide guidance on appropriate controls

– prevent incidents

– improve environmental performance

– improve customer relationships

– reduce costs and increase efficiencies.

Definitions

Approvals, licences or permits may be required depending on the activity and location. Some examples include harming threatened species, discharging to sewer, working in a national park and storing Scheduled PCBs.

EHC Act means the NSW Environmentally Hazardous Chemicals Act 1985.

EIA means environmental impact assessment.

EP&A Act means the NSW Environmental Planning and Assessment Act 1979.

EPA is the NSW Environmental Protection Authority.

EPL means environmental protection licence.

PCBs are polychlorinated biphenyls.

POEO Act means the NSW Protection of the Environment Operations Act 1997.

REF is an EIA known as a review of environmental factors.

SER is an EIA known as a summary environmental report.









8 Introduction

Planning laws

The EP&A Act provides the overall framework for development planning approvals in New South Wales (NSW).

Most new construction projects and some maintenance activities carried out by or on behalf of Ausgrid will require an EIA before the works begin. Most EIAs will be in the form of a SER. In some cases, such as major projects, the EIA will be in the form of a REF.

SERs and REFs are prepared in accordance with the EP&A Act and the NSW Code of Practice for Authorised Network Operators.

A number of other Commonwealth and NSW laws also apply for issues such as heritage, threatened species, conservation areas and marine vegetation.

Pollution control laws

The POEO Act regulates air, water, noise and land pollution through a system of licensing, offences and penalties. Ausgrid is required to:

– mitigate air, water, noise and land pollution

– report environmental incidents

– classify and appropriately manage waste

– hold an environmental protection licence (EPL) for certain activities and depots.

The EHC Act requires Ausgrid to hold a PCB licence.

A number of other Commonwealth and NSW laws also apply for issues such as hazardous chemicals, contamination and pesticides.

Penalties

Severe penalties can be imposed for failing to comply with environmental laws:

– up to $10.5 million for a corporation

– up to $1 million and/or 7 years jail for individuals.

When investigating an incident, the EPA advises that a worker who acts in good faith and follows environmental procedures (such as this Handbook) would not normally be prosecuted.













9Introduction

1.3 ResponsibilitiesFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Our Environmental Code of Conduct outlines the standards and behaviours that are expected of all Ausgrid workers. Breaches of this Code may result in disciplinary action.

1.3.1 All workers

It is all workers’ responsibility to:

(a) Comply with the requirements in all relevant environmental documents (refer to section 1.4 Environmental documents).

(b) Use due care, skill and foresight to minimise environmental harm.

(c) Act in good faith when performing your job.

(d) Speak up when you think an environmental document is missing or cannot be followed, when something appears to be wrong, you are not sure what to do, or something could be improved.

(e) Discuss environmental risks and hazards when preparing a hazard assessment checklist (HAC).

(f) Immediately report environmental incidents to your supervisor.

1.3.2 Supervisor and Manager

It is the Supervisor or Manager’s responsibility to:

(a) Understand environmental risks and legal requirements relevant to your area of influence.

(b) Check there are specific procedures and instructions for your workers to effectively manage environmental risks (refer to section 1.4 Environmental documents).

(c) Make environmental documents accessible to your workers.

(d) Check your workers have adequate supervision, training and resources to comply with procedures and instructions.

(e) Have appropriate contingency plans for dealing with environmental emergencies.

(f) Investigate all relevant environmental concerns.

(g) Share information with other areas of the company.

(h) Evaluate the operational performance of your workers and discuss results with your manager (refer to section 9 Handbook checklist).

1.3.3 Environmental training

(a) All new workers must complete environmental training through Ausgrid’s induction process.

(b) All workers who work on or near Ausgrid’s network must have current environmental training in this Handbook (RF0003).

(c) All workers must be competent and have current environmental training relevant to their work.

(d) Project specific inductions may also be required where project specific environmental documents apply (refer to section 1.4 Environmental documents).






10 Introduction

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11Introduction

Environmental documents include environmental policies and procedures (including this Handbook) and project specific documentation.

Project specific documentation includes EIAs, approvals, licences and permits, issue specific management plans, and construction environmental management plans (CEMPs).

Environmental laws and regulations, approvals, licences and permits will override other requirements (including this Handbook) in the event of an inconsistency.

EIAs, issue specific management plans and CEMPs will generally override this Handbook.

1.4 Environmental documents Further information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Definitions

CEMP is a construction environmental management plan. These usually apply to large construction projects or projects located in sensitive areas. It details the project requirements and the controls to comply with those requirements (eg auditing, training, incident response).

DA is a development application, prepared in accordance with Part 4 of the EP&A Act and submitted to Council for approval.

EIAs are required for new construction projects and some maintenance works. In most cases these documents will be a SER or REF.

EIS is an EIA known as an environmental impact statement that is prepared for proposals that are likely to have a significant effect on the environment. EISs are submitted to the Minister for Planning for approval.

Environmental policies provide the overarching values and behaviours expected of our workers. All Ausgrid workers must comply with our Environmental Policy (employees only), Statement of Commitment and Code of Conduct.

Issue specific management plans (eg an erosion and sediment control plan, noise and vibration management plan) may be required by the EIA or due to the type of activity. This Handbook outlines when these plans may be required.

Our objectives

Ausgrid is committed to environmental sustainability and the protection of the environment. The Environment Policy has been developed to support Ausgrid’s responsibility to:

• overseetheimplementationandeffectivenessofthecompany’sEnvironmentalManagementSystem(EMS);

• reviewtheappropriatenessofenvironmentalriskmanagementandriskmonitoringprocessesandprogramsastheyaredeveloped,implementedandmaintained;and

• establishanEMStofacilitatecompliancewithrelevantlawsandregulationsandcontinuousimprovementintheorganisation’sperformanceofitsenvironmentalresponsibilities.

Our Green Rules

GreenRulesareAusgrid’sbasicrulesthatallemployeesshouldknowandfollowtopreventseriousenvironmentalharm:

1. Planworktominimiseenvironmentalharm.

2. Immediatelyreportandrespondtoenvironmentalincidents.

3. Workstrictlyinaccordancewithanyenvironmentalapprovals.

4. Manageallwasteandcontaminatedmaterialsappropriately.

5. Minimisenoiseandemissions.

Environmental Statement of Commitment

Our commitment

Reflecting our collective commitment to the environment, Ausgrid will use their best efforts to:

• continuallyimprovetheEMS;

• preventpollution;

• identifyandmanageenvironmentalriskseffectively;

• complywithenvironmentallaws,policies,chartersandothercommitmentstowhichwesubscribe;

• setclearobjectivesandtargetsforourperformance;

• supportourpeopleandimproveourworkculture;

• communicatewithemployeesandexternalstakeholdersaboutenvironmentalissues;

• striveforresourceefficiency;and

• clearlydocumentpoliciesandprocedures.

Formoreinformation,pleaserefertotheAusgridEnvironmentPolicylocatedonTheWire.

VersionNo: 2IssueDate: 17/10/2016ReviewDate: 17/10/2019

Executive Leadership Team

Trevor ArmstrongActingChiefExecutiveOfficer

John HardwickGeneralManager–AssetManagement

David PengillyGeneralManager–NetworkServices

Joe PizzingaChiefFinancialOfficer

Kirsten WatsonGeneralManager–Safety,HR&Environment

Pamela HendersonGeneralManager–Customer&CorporateServices

Lisa MaffinaCompanySecretary








12 Introduction

1.5 Environmental planningFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

New construction or higher risk works

Most new construction projects and some maintenance work carried out by or on behalf of Ausgrid will require an EIA before the works begin.

Most EIAs will be in the form of a SER. In some cases, such as major projects, the EIA may be in the form of a REF, EIS or DA.

Routine repairs, maintenance and emergency works

Routine repairs, maintenance and emergency works will generally be considered exempt development and do not require an EIA, providing the work is of minimal impact. These projects can proceed in accordance with the controls in this Handbook.

Contact Environmental Services if:

– there is no EIA for the works (and one is required)

– the works cannot meet the specific controls in the EIA or the requirements in this section of the Handbook.

An EIA or specialist assessment may be required.

Definitions

Assessor is an authorised person who prepares the EIA for a proposal.

Determination is the decision on whether the proposal can proceed taking into account to the fullest extent possible all matters affecting or likely to affect the environment.

EIA, EIS, REF, SER, DA refer to section 1.4 Environmental documents.

Exempt development includes certain activities as defined in State Environmental Planning Policy (Infrastructure) 2007 SEPP (Infrastructure).

Verifier is an Ausgrid officer who is authorised to determine an SER.

WebGIS EL is Ausgrid’s environmental geographic information system which contains spatial data for some sensitive environmental areas/places referred to in this Handbook.

1.5.1 How to identify the correct planning approval process

The appropriate planning approval process can be confirmed by using the EGN 068 Approvals Process Calculator.

1.5.2 Interpreting a SER

The SER, like all EIAs, describes the scope of approved activities and associated project specific controls.

The SER is divided into the following sections:

Project information

Project name, number, location, coordinator and status of the SER.

Table 1 Project details including a description of the environment where the works will take place.

Table 2 Approvals, licences or permits which may be required for the works. Sensitive areas and issues that may be affected by the project. Project specific controls required in addition to the controls in this Handbook.









13Introduction

1.5.3 Before works begin – for works requiring an EIA

(a) Check that the EIA and any applicable approvals, licences or permits are accessible on site.

(b) Check all works are consistent with the scope of works in the EIA. Where the scope of works changes, the EIA will need to be revised. Contact the Assessor noted on the EIA.

(c) Check the environmental risks and project specific controls in the EIA are understood.

1.5.4 Before works begin – for ALL WORKS

(a) Assess the worksite to identify any additional risks and controls that may apply to the works (refer to section 9 Handbook checklist).

(b) Check the proposed controls are suitable to manage the environmental risks.

(c) Check current controls are working effectively and if not, correct them or speak up.

Works can proceed when all workers understand the environmental risks and associated controls that are applicable to their work.

All works

Check current controls are working effectively and if not,

correct them or speak up

Assess the worksite to identify any other environmental risks

and controls (see section 9 Handbook Checklist)

Check the proposed controls are suitable to manage

environmental risks

Works requiring an EIA (most new works and some maintenance works with more than minimal impacts)

Check that the EIA and any applicable approvals, licences

or permits are on site

Check the proposed works are consistent with the scope

of works in the EIA

Check the environmental risks and controls in the EIA

Process before any works begin

14 Introduction

Table 1 outlines the project details including the scope of activities covered by the SER.

Check the scope of works and design drawing prior to starting. If the activities have changed, the assessment may need to be revised and reissued. Contact the Assessor noted on the EIA.

Table 2 outlines the environmental impact assessment and specific construction controls. The SER controls and Handbook controls form the conditions of the determination. In the event of an inconsistency, specific controls in the SER will prevail.

At the end of table 2, there are 2 mandatory attachments including the WebGIS EL report and design drawing.

The attached design drawing forms part of the scope of works. Other permits, approvals and specialist assessments that are attached must have their controls implemented.

Project information includes the project name, location and SER status.

The decision statement is printed at the end of the SER. The Assessor and Verifier can be contacted for more information.

Scope of activities covered by this SER

Description: *Works:Install substation 55677:-prepare site, level site, erect retaining wall and handrail- install piers, precast base and earthing- supply and install 800 KVA L Type Kiosk SL- label sub S5678 Underwood- supply and install 80 SIBA 300.20.93 HV fuses- supply and install four sets of 3x400 AMP LV fuses- label distributors- install EFI on feeder

Decommission and recover S1234 Pomeroy Street. Remediate site and lay turf.

Design reference:Refer to attached drawings CCY01234 for further information.

NOTE: CHANGES TO THE SCOPE OR DESIGN WILL REQUIRE A REASSESSMENT.

Site access:Work would occur within a roadway and, as such, provisions for traffic management would be made sufficient to meet local council and the Roads and Maritime Service (RMS) standards.All work, including access during construction, would occur within existing roadways.

Vegetation trimming/clearing:Vegetation removal required to complete this work inlcudes removing two shrubs and one tree. This is required because the vegetation is located on the site of the proposed substation. Vegetation removal required to complete this work includes removing two shrubs and one tree. This is required because the vegetaion is located on teh site of the proposed substation.

Table 1 – Project details

Summary Environmental ReportNS174A SER

Ausgrid Version 1.15 Page1of 14 Notes1. This report is to be used only for Class 3 assessments undertaken in accordance with NSW Code of Practice for Authorised Network Operators, Department of Planning and Environment, September 2015. In particular, the proposal must have minor and neither extensive nor complex impacts and require a Part 5 assessment under the Environmental Planning and Assessment Act 1979.2. Instructions for completing this SER are contained in NS174 Environmental Procedures Supplementary Notes - EIA Guidelines and EGN 174B SER Guidance Notes which can be accessed by the information buttons.3. Proposals involving level 3 risks (Table 2) will require verification by Ausgrid’s Environmental Services.4. Fields marked with an asterisk (*) must be completed before the form can be submitted.5. The SER once verified forms Ausgrid’s conditional determination of the proposal. Conditions include specific controls in this SER and controls in NS174C Environmental Handbook for Construction and Maintenance. In the event of an inconsistency, specific controls in this SER will prevail.

Project informationProject name * Replace substation 1234 Pomeroy Street with KL Sub 55678 Underwood Road Homebush

Project number * Handbook_CC01234

Street number 25

Street Pomeroy Street

Suburb * Homebush

Ausgrid project coordinator (if known)

Version date 27/03/2017

SER status Approved

Ecology 2.1 Matters of national environmental significance (NES, Commonwealth)

Level 1 - No potentail impacts identified Level 2 - Impacts would be avoided/minimised. Specific controls may be required. Level 3 - Referral to Environmental Services for further assessment Description of potential impacts Specific construction controls

Table 2 – Environmental Impact assessment & specific construction controls

The assessment area as defined by the WebGIS EL report contains one commonwealth threatened flora species, Acacia terminalis. This flora species will not be cleared or impacted by the proposed works.

The environmental risk is considered low.

-All workers to be made aware of sensitive areas and the need to avoid impacts.-Vegetation removal is restricted to the two shrubs and one Hills Fig tree.-No disturbance of bush rock, tree hollows, wetlands, mangroves, nests, aquatic or other sensitive habitats.-No works in undisturbed areas (including storing equipment, parking vehicles in or accessing the site).-No importing mulch from other sites.

Decision statementAssessor Agree. I certify to the best of my knowledte and belief that:

-I have completed this SER in accordance with NS174 Environmental Procedures Supplementary Notes - SER Guidelines and EGN 174B SER Guidance Notes.-The inforamtion contained in this SER is nether false nore misleading.-The proposal has impacts that are minor and neither extensive nor complex and can proceed subject to compliance with specific controls in this SER and minimum controls in the NS174C Environmental Handbook for Construction and Maintenance.-The scope of works includes all construction, maintenance, operation and ancillary activities and accurately reflects the attached design plan.-I have completed a site inspection.

Assessor name * Michelle Quinn Assessor company * Ausgrid

Assessor contact No. * 9981 9944 ID number * 44765

Verifier Agree-As an authorised person, I have approved this SER, on behalf of Ausgrid, in accordance with NS174 Environmental Procedures Supplementary Notes - SER Guidelines, EGN 174B ER Guidance Notes and EF 17450 SER Verification Checklist.

-The proposal has impacts that are minor and neither extensive nor complex.

Verifier name * Leslie McCluskey Verifier contact No.* 04 0847 0987

Verification date time 27/03/2017 2:41:45 PM ID number * T51896

Attachments - Env GIS Analytical Report, Design Drawing (<10MB total)

File Size: 831.526K File Name WebGIS EL SER.pdf

Description * WebGIS EL report


15Introduction

1.6 Community engagementFurther information is available in Ausgrid’s Community Engagement System (employees only) and Environmental Handbook reference material.

Working closely with residents, businesses, councils and other groups can reduce the duration and cost of work to benefit both Ausgrid and the community.

Community engagement can range from notifications for localised disruptions to community engagement programs for major projects.

In all cases it is important to be genuine and clear about what is proposed and how the community can participate in the planning process. It is also important to provide a point of contact, let the community know how their input was considered and honour any commitments.

1.6.1 Before works begin

(a) Check the requirements of any applicable EIA (refer to section 1.4 Environmental documents).

(b) Check the requirements of any applicable community engagement plan (typically prepared for major projects).

(c) Provide notifications when required (refer to section 1.6.3 Notifications).

Definitions

Clear business day is a day other than the weekend or a public holiday and does not include the notification date or the date of works commencing.

1.6.2 Community engagement principles

To minimise disruption to the community, complaints and delays, consider the following principles:

(a) Think about what your needs and expectations would be if you were affected.

(b) Be open and acknowledge concerns.

(c) Take a ‘no surprises’ approach. People are generally cooperative if they know what is happening, when it’s happening and why it’s required.

(d) Provide a point of contact.

(e) Keep messages factual, current and consistent.

(f) Update the community and stay in touch with those who are heavily affected.

(g) Ask receivers how they are finding the work.

(h) Honour any commitments made to the community.

1.6.3 Notifications

Depending on the type of work, engagement with the community may require specific notification.

(a) Planned interruptions require notification to affected receivers between 4 and 14 clear business days prior to starting work.

(b) Noisy works require notification to affected receivers between 4 and 14 clear business days prior to starting work (refer to section 4.2.3 Consultation).

(c) Noisy works outside standard operating hours need to be fully justified as necessary and meet certain criteria (refer to section 4.2.5 Out of hours work requirements).



16 Pollution control

2 Pollution control2.1 Erosion and sediment controlFurther information is available in Ausgrid’s WebGIS EL (authorised workers only) and Environmental Handbook reference material.

Erosion and sediment controls keep sediment on the work site and out of drains and waterways.

Sediment runoff can result from excavating, stockpiling, clearing and removing groundcover. This can harm the environment.

Sediment must be prevented from entering a waterway or drain in accordance with legal requirements.


– disturbing >250m2 at any one time

– disturbing >50m2 on vulnerable land (steep, highly erodible or protected riparian land)

– disturbing >50m2 within 40m of a natural waterway, including creeks, rivers, lakes, wetlands, streams, and ponds

– working within a natural waterway, including dredging (excavating), reclamation (filling) or vehicle access

– works cannot meet the requirements in this section of the Handbook.

A specialist assessment and/or erosion and sediment control plan (ESCP) may be required.

Definitions

Blue Book means Managing Urban Stormwater – Soils and Construction (Volume 1).

ESCP is a site specific erosion and sediment control plan. ESCPs are to be prepared in accordance with the Blue Book.

pH means potential of hydrogen which is the measure of the acidity or alkalinity of a solution.

Spadeable material is generally capable of being moved by a spade at normal temperatures.

Vulnerable land means areas of NSW that are especially vulnerable to soil erosion, sedimentation and landslip if appropriate techniques are not used when clearing vegetation.

Wet-vac is a vacuum cleaner that can be used to clean up wet or liquid spills.


(a) Check the requirements of any applicable EIA (refer to section 1.5 Environmental Planning).

(b) Check the requirements of any applicable ESCP.

(c) Check for drainage lines, grates, drains, inlets, exposed surfaces, areas subject to bogging and waterways.

(d) Check for vulnerable land (refer to WebGIS EL).







17Pollution control

2.1.2 Six steps for effective erosion and sediment control

STEP 1

Assess the site and proposed works for risks of erosion and sedimentation.

(a) Identify potential water flows, such as:

– drainage lines, grates, drains and inlets

– exposed surfaces and areas subject to bogging

– waterways.

(b) Identify potential for erosion, such as:

– existing exposed surfaces

– areas likely to be disturbed by the works.

(c) Identify high risk erosion and sedimentation activities, such as:

– stockpiling and trenching (see 2.1.3)

– underboring (see 2.1.4)

– sawcutting (see 2.1.6)

– access track works (see 2.1.5)

STEP 2Prevent erosion potential.

(a) Minimise ground disturbance and the removal of ground cover.

(b) Avoid disturbed areas and areas prone to bogging, where possible, especially during wet weather.

(c) Where required, provide additional ground cover such as grass, mulch or temporary construction mats (refer to section 5.4 Use of recovered materials).

(d) Phase works so that minimal land is exposed at any one time.

(e) Minimise surface water flowing on to the site using barriers such as sand bags.

(f) Stabilise disturbed areas where a break in work of >21 days will occur (turf, geotextile, mulch, soil binders or fast growing seed).

(g) Place soil uphill of an excavation, outside of the zone of influence.

Turf helps protect the ground surface from erosion.

Locating of slopes, contours and drainage lines will determine the controls required.

Temporary construction mats help minimise ground disturbance.


STEP 3

Install sediment controls.

(a) Place sediment control devices to protect drainage lines, grates, drains, inlets, and waterways:

– before work starts

– as close as practicable downstream of disturbed areas and stockpiles

– in a manner that doesn’t impede drainage or cause localised flooding

– so that disturbance to vegetation is minimised.

(b) Install adequate controls at entry and exit points (such as an aggregate bed, rumble grid or wheel wash).

STEP 4

Good site management.

(a) Stockpile topsoil, ground cover and contaminated spoil separately to aid reuse and disposal (refer to section 5.3 Waste management).

(b) Clean mud from wheels and underbodies prior to leaving site to prevent tracking sediment, and sweep streets as required.

(c) Prevent spilling spoil or fill during transport.

(d) Apply the appropriate controls for accumulated water (refer to section 2.2 Water discharge).

(e) Clean the site and put adequate controls in place before finishing for the day.

Rumble (cattle) grids help remove sediment from tyres as vehicles leave site.

Cover loads to prevent dropping spoil or creating dust.

19Pollution control

Regularly inspect and maintain sediment controls.

Rehabilitate disturbed areas to prevent erosion.

STEP 5

Inspect and maintain controls.

(a) Regularly inspect controls, especially prior to and during periods of rainfall, to check they are working effectively and no sediment is leaving the site.

(b) Regularly maintain controls:

– clean: remove sediment build up

– repair: fix defects

– replace: replace degraded products

– improve: incorporate additional controls as required.

STEP 6

Rehabilitate disturbed areas.

(a) Stabilise disturbed areas promptly, this may include progressive rehabilitation.

(b) Restore all surfaces to their original condition or as specified by the relevant authority.

(c) Maintain rehabilitated lands to establish sufficient ground cover to prevent erosion.

(d) Remove temporary erosion and sediment controls once the site is stabilised or rehabilitation is complete.


Stockpile covered with plastic to prevent wind and water erosion.

Tipping unwanted spoil directly into a truck or skip avoids stockpiling.

Bulk storage bags help contain materials.

Excavated spoil placed upslope and clear of trench Kerbside

turf strip

Kerb Road

Trench

Zone ofinfluence

Zone ofinfluence

Stockpile located uphill of the excavation to prevent sediment entering the gutter.

2.1.3 Stockpiling and trenching

(a) Reduce the need for stockpiling. Controls may include:

– Tip unwanted spoil directly into a truck or skip bin.

– Schedule deliveries so that materials are delivered only as required.

– Have materials delivered in containers such as bulk storage bags.

– Reuse spoil elsewhere on-site.

(b) When stockpiling cannot be avoided, prevent runoff by placing stockpiles away from roadways, gutters, drains, slopes, concentrated flow paths and channels.

(c) Protect stockpiles at risk of wind or water erosion. Controls may include:

– Place stockpiles on a tarpaulin.

– Cover or contain stockpiles if the site is left unattended or when rain is expected.

– Divert surface water flowing onto the stockpile using barriers such as sand bags.

– Limit the height of stockpiles to 2m.

21Pollution control

Wet-vac used to collect saw cutting runoff.

Saw cutting slurry has not been contained effectively.

2.1.4 Underboring

(a) Use a recirculating drilling fluid/mud system.

(b) Prepare a contingency plan to deal with a potential frac-out (inadvertent release of drilling lubricant).

(c) Monitor for frac-outs during underboring.

2.1.5 Access tracks

(a) New access tracks will require an EIA (refer to section 1.4 Environmental documents).

(b) Undertake maintenance of tracks in accordance with NSW Erosion and sediment control on unsealed roads and Volume 2C of the Blue Book.

2.1.6 Saw cutting

Slurry from saw cutting operations must be contained as it has a high pH (alkaline) that is not reduced by filtering through geotextile. Controls include:

(a) Contain slurry using a wet-vac (wet/dry vacuum) and sandbags, where possible.

(b) If not using a wet-vac, contain using sandbags or barriers and remove from site.

(c) Use minimal water during cutting to create a slurry, which is more readily contained.

(d) Sweep slurry residue into a contained area before it dries.

(e) Dispose of spadeable slurry as general solid waste and liquid slurry to a liquid waste treatment facility.

Controls used to protect stormwater inlets.





Fill geotextile filter bags filled to two-thirds capacity so they can be keyed firmly against the kerb.

Natural and biodegradable coir logs can be used on unsealed surfaces.

2.1.7 Depot material bays

(a) Inspect and maintain the material bay facility after every use and after periods of rainfall.

(b) Do not overfill the bays – keep material within the marked areas of the bays to control sediment and dust.

(c) Supervise material deliveries to confirm the materials are unloaded within the bays.

(d) Sweep up material that remains outside the bays before leaving the site.

(e) Rectify or report any issues.

2.1.8 Geotextile filter bags

To protect stormwater inlets use geotextile filter bags instead of sandbags.

Sandbags do not allow water to filter through and can cause flooding. Sandbags are useful for water diversion and containing saw cutting slurry.

When using geotextile filter bags:

(a) Fill geotextile filter bags to two-thirds capacity with a minimum 20 mm aggregate.

(b) Form a seal with the kerb to prevent sediment bypassing the filter bag.

2.1.9 Coir logs

Consider coir logs for use on unsealed surfaces. To install coir logs:

(a) Level the area beneath the logs prior to placement.

(b) Stake logs at regular intervals to prevent movement.

2.1.10 Sediment fences

(a) Locate sediment fences:

– Parallel to the site contours.

– As close as practicable downhill of disturbed areas.

(b) Create small returns at approximately 20m intervals along the fence to limit the catchment area of any one section.

Stockpile covered to prevent dust and sediment fence used to filter runoff.

23Pollution control

Aggregate-filledgeotextile filter bag

Sediment Filteredwater

Run-off water

Timber spacerto suit

Kerbside inlet

Overflow



Typical geotextile filter bag installation instructions.


Sediment Filteredwater

Run-off water


Kerbside inlet

Overflow



Sediment fence installation instructions.

Sedimentfence height500 mm to

600 mm

Star picketdepth

600 mm

Directionof flow

Starpicket

Self supportinggeotextile

Directionof flow

min 20mm gravel anchoring

Note: For a short term application, avoid digging by covering the base of the geotextile with aggregate to at least 100 mm wide.

STEP 1: Cut a 100 mm x 150 mm deep trench to bury the bottom of the fabric.

STEP 2: Drive 1.5 m long star pickets spaced 2.5 m apart (maximum) on the downhill side disturbed areas and stockpiles.

STEP 3: Fix self-supporting geotextile to the uphill side of the posts and to the base of the trench. Fix the geotextile with wire or as recommended by the manufacturer.

STEP 5: Backfill the trench over the base of the geotextile and compact thoroughly.

STEP 4: Join sections of fabric at a star picket with a 150 mm overlap.

CAUTION: Undertake necessary checks to avoid underground services.


Water discharges may be required to deal with accumulated water in trenches, pits, substations, bunds or washbays.

Improper water discharges can harm the environment. Only clean rain water is allowed to enter a waterway or drain. Any other liquid or solid is considered a pollutant.

Accumulated water which requires removal must be classified, discharged and monitored or disposed in accordance with legal requirements. In many cases accumulated water will require specific sampling, treatment and/or tankering, tracking and disposal.

Preventing water ingress reduces treatment and disposal costs and helps avoid project delays.


– water discharges are automatic or long term

– water has unusual smells, colours, scum, foam or evidence of contamination

– groundwater extraction is required


A specialist assessment and/or water treatment management plan (WTMP) may be required.

Additional WHS requirements may apply. Refer to the safety data sheet (SDS) and advice from the local safety advisor.

2.2 Water dischargeFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

A sediment filter bag in operation.

Definitions

NTU means nephelometric turbidity units, which is a measure of a liquid’s turbidity (or cloudiness).

SDS means safety data sheets

WTMP is a site specific water treatment management plan.



(b) Check the requirements of any applicable WTMP (for high risk or long term water discharges).

(c) Users of washbays must check the requirements of any applicable trade waste agreements (refer to section 8.2.4 Washbays).

(d) Check for drainage lines, grates, drains, inlets, exposed surfaces, areas subject to bogging and waterways.



25Pollution control

Read the NTU from the side of the turbidity tube when the symbol at the base of the tube is just visible from the top.

Indicator lines at the base of the turbidity tube.

Indicator lines no longer visible in the turbidity tube.

Follow the instructions on the packet for a pH strip test.

2.2.2 General requirements

Use section 2.2.4 Water discharge flowchart to determine discharge options for trenches, pits, substations or bunds.

(a) Where the discharge criteria cannot be met, organise a licensed tanker to remove the water.

(b) Non-domestic discharges to sewer (such as washbays) must be in accordance with a permit from the relevant sewage authority (refer to section 8.2.4 Washbays). Domestic discharges include waste water from amenities and non-commercial kitchens.

(c) An approval from the relevant sewage authority is required to install, operate or alter a septic tank.

(d) Prevent erosion and sediment runoff (refer to section 2.1 Erosion and sediment control).

2.2.3 Measuring turbidity

(a) Hold the turbidity tube upright and keep it out of direct sunlight.

(b) Look vertically down the tube while gradually pouring the water sample into the tube.

(c) Stop pouring when the symbol on the bottom of the tube is just visible.

(d) Record the reading in NTU from the scale on the side of the tube.

(e) Rinse the tube out with clean water.


Process for discharging water from a trench, pit, substation or bund.

NO

NO

YES

NO

OR

Is the water from a 132kV trench installed prior to 1980

Is the water contaminated (other than oil or sediment)?

Check for unusual smells, colours, scum, foam or other evidence of contamination.

Is the pH between 6.5 and 8.5?

Check by using pH test strips.

Does the area being drained contain oil or oil filled equipment?

Continually monitor discharge to check:

– pH is between 6.5 and 8.5

– turbidity is <50 NTU

– discharge contains no colour, oil or other contaminants

– discharge does not cause erosion or sedimentation.

If these criteria cannot be achieved then organise a licensed tanker to remove the water.

Organise a licensed tanker to remove the water. Ausgrid employees contact Aqueous Waste Services:

– 3 days notice is required for planned work. Use the Aqueous Waste Booking form.

– For emergency pump-outs, call Aqueous Waste Services on their 24 hour number 02 8569 6712.

YES/Unknown

Contact Environmental ServicesYES

NO

YES/ Unknown

NO

YES

YES

OR

NO

Is there oil in the water?

Is the oil just a sheen, or is it possible to pump the water

layer ONLY?

Use an oil filter bag to pump WATER LAYER ONLY.

Note: Ausgrid employees supervising the discharge must be trained in this procedure.

Use a sediment filter bag to pump the water.

Note: Ausgrid employees supervising the discharge must be trained in this procedure.

Discharge to a grassed area.

Do not allow surface run-off. Must have owner’s permission (where applicable).

AND

AND

Is there oil in the water?

NO

OR

NO

YES

YES Does the equipment contain scheduled PCBs?

2.2.4 Water discharge flowchart


27Pollution control

2.3 Oil, fuel and other chemicals Further information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Oil, fuel and other chemicals are used, handled and stored at various locations across the network and at depots. Examples of chemicals include paints, solvents, resins, glues, lacquer, thinners, detergents, cleaning agents and lubricants.

Spills and leaks can cause land contamination and harm the environment.

Oil, fuels and chemicals must be prevented from entering a drain or waterway and be handled, stored, transported and disposed in accordance with legal requirements.


– oil transfers are >15,000 litres (L)

– oil transfers >5,000L in a sensitive area (within 40m of a wetland or waterway)


A specialist assessment and/or environmental work method statement (EWMS) may be required.

Additional WHS requirements may apply. Refer to the SDS and advice from the local safety advisor.

Definitions

EWMS is an environmental work method statement.

ppm means parts per million or mg/kg.

Cover bunded pallets when exposed to the weather.

Spill pallets used for temporary storage of drums.

Drums in poor condition, not bunded, labelled or covered can leak and contaminate land or water.




2.3.1 Before work begins


(b) Check the requirements of any applicable EWMS (for high risk oil transfers).

(c) Managers of oil storage areas must understand the requirements of relevant licences (for PCBs and waste).

(d) Check for drainage lines, grates, drains, inlets and waterways.


(a) Have an appropriate spill kit(s) and response procedures accessible when handling, storing or transporting oil, fuel and other chemicals (refer to section 2.3.3 Types of spill kits).

(b) Clearly label all oil, fuel and other chemical containers.

(c) Have current oil spill response training if involved in the handling, transport or storage of oil.

(d) Promptly clean up spills and leaks (refer to section 10 Environmental incidents).

(e) Dispose of used oil spill response material as general solid waste if it is PCB free and has no free liquids (refer to section 5.3 Waste management).

Use bunded chemical storage cabinet to store fuel and chemicals.

Spill kits should be readily available in all oil storage areas.

Equipment stored too close to the bund wall means leaks may not be contained.


29Pollution control

Calculate the spray distance.

General purpose

Oil only HazChem or Chemical

For oil- and water-based liquids, including weak acids and alkalis

For oil-based liquids such as fuels and lubricants

For aggressive chemicals (eg toxic, corrosive pesticides)

2.3.4 Handling and transport

(a) Position transfer equipment as far away as practicable from drains and property boundaries.

(b) Monitor hoses and pumps while in use.

(c) Regularly inspect and maintain all plant and equipment used in the handling and transport of oil, fuel or other chemicals.

(d) Secure equipment, containers and drums prior to transport.

(e) Handle oil, fuel and other chemicals such that spills can be recovered and would not enter a drain or waterway (eg on hard stand, within a bunded area, under cover), where possible.

2.3.5 Storage

(a) Store oil in a bund unless storage meets all of the following ‘temporary oil storage’ requirements:

– total volume is < 1,000 L

– stored for < 24 hours

– the oil is PCB free ( ≤ 2 ppm).

(b) Store fuel and chemicals in a bund unless storage meets all of the following requirements:

– Container size is < 20L for domestically available products, or < 5L for all other products

– All other WHS requirements have been met.

2.3.3 Types of spill kits (c) Store oil, fuel and other chemicals in a manner such that spills can be recovered and would not enter a drain or waterway.

(d) When using bunds:

– Confirm the bund is at least 110% of the volume of the largest container.

– Check bunds are in good condition (eg impervious, free of debris, drain valve closed, emptied after rain) and rectify or report any issues.

– Maintain the required spray distances from the bund wall (half the height of the equipment above the bund wall).

– Cover bunded pallets when exposed to the weather.

(e) Separate incompatible chemicals.

Tank/Container

Spray

H

h

(H-h)/2


Product Uses Notes

Socks and booms – Surround leaking drums.

– Place in the flow path (eg drain).

– Use as a floating boom.

– A 3 m sock holds around 6 L of oil.

– Must monitor use as it will eventually deteriorate and sink in water.

Absorbent pads – Place under leaks and drips.

– Use as a floating pad.

– Place in trafficable areas.

– Place in drip trays.

– Use as a wipe.

– Holds around 1 L of oil.


Powder absorbent – Use for spills on hardstand such as concrete.

– Apply powder, work in with a broom then remove.

– Do not use on water.

Loose absorbent – Apply loose material over spill and spread with a broom for maximum absorption.

– Do not apply in windy conditions. – Holds approximately half the

volume of the absorbent – (eg 50 L bag holds 25 L oil). – Must monitor use as it can easily

blow or wash away.

Absorbent pillows – Use in drains, pits or gutters.

– Holds around half the volume of the absorbent (eg 20 L pillow holds 10 L oil).


2.3.6 Spill response material

31Hazardous materials

3 Hazardous materials3.1 Asbestos Further information is available in Ausgrid’s Environmental Index and the Asbestos Gateway (employees only) and Environmental Handbook reference material.

Asbestos has unique properties, such as fire resistance and low conductivity that led to its widespread use. It was used as insulating material for high temperature electrical wiring in cable bandages, joints, pits and conduit, switchboards and LV Boards, and was routinely installed in substation buildings in the form of asbestos cement sheeting or floor tiles.

Asbestos is a known carcinogen. Inhalation of fibres can cause damage when they are breathed into the lungs. The risk is dependent on the type of fibre, the amount of asbestos dust in the air and the duration of exposure. When in good condition and managed correctly, asbestos containing materials (ACM) present negligible risk to Ausgrid workers and others.

Asbestos fibres must be prevented from becoming airborne. ACM must be assessed, classified, registered, stored, handled, transported and disposed in accordance with legal requirements. Labelling and licensing may required for the removal, transport, storage and disposal of asbestos wastes.


– asbestos sampling is required

– the Asbestos Register does not reflect current observed conditions

– asbestos in soil is identified

– asbestos has been illegally dumped on Ausgrid property

– asbestos work cannot meet the requirements in NS211 Working with asbestos products or training

– a new asbestos hazard has been identified


Definitions

ACM means asbestos containing material which is any material or part of a thing that, as part of its design, contains asbestos. Products that contain asbestos are considered as being either friable or non-friable.

Asbestos in soil includes soil contaminated with asbestos or inappropriately buried asbestos. This does not include asbestos conduit, joint boxes and troughing installed in accordance with Network Standards.

Asbestos removal work means work involving the removal of asbestos or ACM, including removal by an independent LAR.

Friable asbestos means any material that contains asbestos and is in the form of a powder or can be crumbled, pulverised or reduced to powder by hand pressure when dry.

LAR means Licenced Asbestos Removalist.

Non-friable asbestos (or bonded asbestos) means material containing asbestos (other than friable asbestos), including material containing asbestos fibres reinforced with a bonding compound. Its condition can degrade and become friable over time or following an incident such as a fire.






3232 Hazardous materials


(a) Check the requirements of any applicable EIAs (refer to section 1.4 Environmental documents).

(b) Check for the presence of known asbestos (refer to Ausgrid’s asbestos register) and suspected asbestos.

(c) Identify the type of material and assess its condition to determine who can remove the material, the level of PPE required, and the appropriate procedures to use.

3.1.2 Asbestos removal work

(a) Undertake work that has the potential to disturb ACM in accordance with WHS requirements, SafeWorkNSW Code of Practice – How to Safely Remove Asbestos, the specific work instructions detailed in NS211 Working with asbestos products and Ausgrid’s Asbestos training.

(b) Non-friable asbestos removal ≤10m2 per job can be undertaken by Ausgrid workers who have undertaken the required training, and are competent and have the required PPE and safety equipment.

(c) All friable asbestos removal and non-friable asbestos removal of >10m2 must only be undertaken by an independent LAR (unless in accordance with an approved exemption).

(d) Notify occupied premises in the immediate vicinity of the works that asbestos removal works will be taking place and when the works will commence.

(e) When engaging the community consider the principles in section 1.6.2 Community Engagement Principles.

(f) Refer to section 5.1 Contamination for the additional requirements regarding asbestos in soil.

At the completion of work submit a hazmat remediation and removal form to [email protected].

Include:

– air monitoring results and clearance certificates (for licenced works)

– tipping dockets (for waste taken to landfill).

3.1.3 Transport and disposal

(a) Properly contain all asbestos waste on the job site, by double bagging or double wrapping with 200µm thick plastic.

(b) Transport bagged or wrapped asbestos waste to a disposal location using a covered, leakproof vehicle.

(c) Protect the asbestos waste wrapping from tears or punctures from tools or other objects.

(d) Wet down asbestos contaminated soil prior to transport.

(e) Identify the EPA licensed facility for disposal and delivery requirements. Ausgrid employees can use secure asbestos bins located at certain depots (refer to the Asbestos Gateway).

(f) Comply with waste licensing and EPA tracking requirements (refer to section 5.3 Waste management).

Ausgrid employees can use secure asbestos bins located at certain depots.










Examples of asbestos containing materials

Damaged fire door exposing asbestos core.

Conduits in substation concrete floor.

NC compound in substation wall.

Distribution substation fence.

Feeder cables at zone substation.

Low voltage collar. Low voltage HRC fuse. Seal of 11kV OCB closing contactor box.

Millboard lining inside the fuse box.

Asbestos based paint. Asbestos rope inside broken fuse.

Debris.

Zelemite board phase barriers.

Busbar trunking and fuse box.

Moulded cement sheet troughing.

Slylok fuse.


3.2 Polychlorinated biphenyls Further information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

PCBs are a group of synthetic compounds once used for their insulating properties and durability. PCBs may be present in transformers, current transformers (CTs), voltage transformers (VTs), oil circuit breaker (OCBs), fluid filled cables and lighting capacitors.

Improper handling of PCBs can harm human health, aquatic life, animals, the environment and cause land contamination.

PCBs must be prevented from entering the environment and be classified, stored, handled, transported and disposed in accordance with legal requirements. Labelling and licensing is required for the transport and storage of certain PCB wastes.


– disposing PCB waste other than non-scheduled PCB oil


A specialist assessment, treatment or disposal may be required.


Definitions

ADG Code means the Australian Code for the Transport of Dangerous Goods by Road and Rail.

Dangerous goods are solids, liquids, or gases that can harm people, other living organisms, property, or the environment, and include scheduled PCBs in accordance with the ADG Code.

GHS means the Globally Harmonised System of Classification and Labelling of Chemicals.

Non-scheduled PCBs have a PCB concentration between 2 ppm and 50 ppm.

PCB free is material and waste that has a PCB concentration ≤2 ppm.

PCB material and waste includes oil, equipment, rags, oil absorbent products and soils which are contaminated with >2 ppm PCBs.

Receptacles include drums, containers and tanks but do not include equipment containing oil.

Scheduled PCBs have a PCB concentration ≥50 ppm.










(a) Check the requirements of any applicable EIAs (refer to section 1.4 Environmental documents).

(b) Managers of PCB handling and storage activities must understand the requirements of Ausgrid’s PCB licence (for storing and handling PCBs).

(c) Check for drainage lines, grates, drains, inlets and waterways.

The following requirements apply when managing PCB material and waste, in addition to section 2.3 Oil, fuel and other chemicals.

3.2.2 Determine the PCB concentration

(a) Determine the PCB concentration prior to disposing or draining oil and oil filled equipment.

– Equipment manufactured before 1997 check Ausgrid’s PCB Register or arrange for testing (contact Ausgrid’s Chemical Testing Laboratory).

– Equipment manufactured ≥ 1997 is PCB Free.

3.2.3 General transport and handling

(a) Clearly label PCB waste and have appropriate spill kits, response procedures and PPE accessible.

(b) Store PCB material in waste storage areas bunded in accordance with AS 1940 The storage and handling of flammable and combustible liquids, located in secure areas and have GHS labels.

(c) Secure PCB material prior to transport.

3.2.4 Transporting and storing scheduled PCBs

A PCB licence is required for the transport or storage of scheduled PCBs > 1 tonne. Where a PCB licence is required:

(a) Use PCB licensed transporters and storage facilities; OR

(b) Transport and store in accordance with Ausgrid’s PCB licence including:

– Transport only between Ausgrid premises by Ausgrid employees.

– Promptly arrange disposal.

– Store in a covered and secure bunded area.

(c) Have current oil spill response training if involved in the handling, transport or storage of oil.

(d) Label scheduled PCBs with the scheduled PCB waste label

PCB CONTAMINATED WASTE OIL (>2 - <50 mg/kg)NON-SCHEDULED PCB WASTE

WARNINGCombustible liquidMay cause damage to organs through prolonged or repeated exposureVery toxic to aquatic life with long-lasting effects

Keep away from heat/sparks/open flames/hot surfaces. No smoking. Do not breathe dust/fume/gas/mist/vapours/spray. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection.

Get medical advice/attention if you feel unwell. IF SWALLOWED: Immediately call a POISON CENTRE or doctor.Do NOT induce vomiting.In case of fire: Use appropriate media for extinction. Collect spillage.

Store in a well-ventilated place. Keep cool.Dispose of contents/container in accordance with NSW regulations.

Ausgrid, 570 George Street, Sydney NSW 2000Telephone: 02 9585 5850

Ausgrid Label_PCB CONTAMINATED WASTE OIL (2 - 50 mg/kg).indd 1 4/05/2017 12:45 pm

PCB CONTAMINATED WASTE OIL (≥50 mg/kg)SCHEDULED PCB WASTEUN 2315 (POLYCHLORINATED BIPHENYLS. LIQUID)

WARNINGCombustible liquidMay cause damage to organs through prolonged or repeated exposureVery toxic to aquatic life with long-lasting effects Keep away from heat/sparks/open flames/hot surfaces. No smoking. Do not breathe dust/fume/gas/mist/vapours/spray. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection.

Get medical advice/attention if you feel unwell. IF SWALLOWED: Immediately call a POISON CENTRE or doctorDo NOT induce vomitingIn case of fire: Use appropriate media for extinction. Collect spillage.

Store in a well-ventilated place. Keep cool.Dispose of contents/container in accordance with NSW regulations

Ausgrid, 570 George Street, Sydney NSW 2000Telephone: 02 9585 5850

Ausgrid Label_PCB CONTAMINATED WASTE OIL (> 50 mg/kg).indd 1 4/05/2017 12:44 pm

Non-scheduled PCB waste label. Scheduled PCB waste label.











AUSGRID(02) 9585 5850

ALL WORKS MUST BE UNDERTAKEN INACCORDANCE WITH AUSGRID’SGUIDELINES AND PROCEDURES

PCB waste labelled ready for collection. Emergency Information Panel.

(e) When transporting, carry completed transport documentation.

(f) When transporting receptacles > 500 kg(L), use a dangerous goods licensed driver and vehicle and placard receptables in accordance with the ADG Code.

(g) When transporting receptacles > 500 kg(L) or aggregate loads ≥ 1000 kg(L),

– Carry specific PPE, safety equipment, Emergency Response Guides and an emergency information holder in transport vehicles.

– Placard the vehicle in accordance with the ADG Code.

Transport documentation

EF 106 v1.0 30 Jun 2015 UNCLASSIFIED Environment Form Page 1

Dangerous Goods transport documentation Scheduled polychlorinated biphenyls (PCBs)

Consignors name: Ausgrid Consignors contact number: (02) 9585 5850

Order number: J 55555 :rebmun eciovnI 34765

To: S mit h & C o, 5 S mit h S t r eet , S mit hville Date: 12/04/16

Transported by: A B C T r anspor t er s P t y L t d

UNnumber*

Proper shipping name* Class / division*

Subsidiary risk

Packinggroup*

Container type* (eg Drum, Transformer) Number of containers*

Aggregatequantity*

2315 P olyc hlor inat ed B iphenyls,

liquid

9 - I I 205L dr um 2 410L

3.2.6 Disposal

(a) Dispose of PCB waste only to an EPA licensed facility.

(b) Comply with waste tracking requirements (refer to section 5.3 Waste management).

(c) To arrange disposal Ausgrid employees can contact:

– Ausgrid’s workshops for non-scheduled PCB oil.

– Environmental Services for all other PCB waste. Use PCB waste removal form (EF 104) or PCB insitu treatment form (EF 105).








3.3 PesticidesFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Ausgrid uses pesticides for controlling weeds, pests and vegetation around substations, depots, powerlines and poles.

Improper handling of pesticides can harm human health and the environment including animals, waterways, non-target species and groundwater.

Pesticides must be prevented from harming non target species and be used, labelled, stored, transported and disposed in accordance with legal requirements. Notification, record keeping and specific training are required for certain applications.



A specialist assessment may be required.


Definitions

AGVET Code means the Agricultural and Veterinary Chemicals Code.

APVMA means Australian Pesticides and Veterinary Medicines Authority

Domestic use criteria requires all of the following criteria must be met for a pesticide use to be considered domestic:

(a) Applied by hand or handheld applicator.

(b) Available to the general public at retail outlets.

(c) Ordinarily used for domestic purposes.

(d) Not applied in a public place.

(e) Outdoor use does not exceed:

– 20 L or 20 kg of ready-to-use – 5 L or 5 kg of concentrate.

(f) Indoor use does not exceed:

– 5 L or 5 kg of ready-to-use – 1 L or 1 kg of concentrate.

Ecological sensitive areas refer to section 6.1 Vegetation).

Pesticides include herbicides, termiticides, insecticides, biocides, fungicides and baits.

Restricted pesticides are determined by the APVMA to present a risk to humans and the environment and are listed in Schedule 4 of the Agricultural and Veterinary Chemicals Code Regulations 1995.

Sensitive places include:

– schools, pre-schools and kindergartens

– child care centres

– hospitals

– community health centres

– nursing homes

– other sites declared by the EPA.









Notification signage is required when pesticides are used in public places.

(i) Store pesticides only in a container with an AGVET Code approved label.

(j) Additional controls apply for storage, handling and transport of liquid pesticides (refer to section 2.3 Oil, fuel and chemicals).

(k) Store in areas that are bunded, secure, cool and well ventilated.

(l) Transport only enough pesticide as is reasonably required for the job.

(m) Carry an appropriate spill kit and response procedures in all vehicles used to transport pesticides.

3.3.3 Commercial use

Commercial use includes all pesticide use which does not meet the domestic use criteria. To undertake commercial use of pesticides, the user must:

(a) Have current EPA approved qualifications.

(b) Keep records in accordance with EPA requirements, such as making records within 24 hours of application and keeping records for a period of 3 years. Ausgrid employees can use pesticide application record (EF 213).

(c) Where applying pesticides on private property, provide a copy of the record to the owner/occupier in a remote location where it is not reasonably practicable to identify the owner or occupier of the land.

Mix only the quantity of pesticides needed for the job.


(a) Check the requirements of the requirements of any applicable EIAs (refer to section 1.4 Environmental documents).

(b) Check the requirements of any applicable Pesticide Control Orders (for restricted pesticides).

(c) Check the pesticide label requirements.

(d) Check for drainage lines, grates, drains, inlets, sensitive places, ecological sensitive areas (refer to WebGIS EL) and waterways.

3.3.2 General use

(a) Use only Ausgrid approved pesticides.

(b) Handle, store, mix, use and dispose of pesticides in accordance with the label or off-label permit issued by the APVMA.

(c) Use the right equipment and pesticide for the job.

(d) Use well maintained equipment that is in good working order.

(e) Mix only the quantity needed for the works.

(f) Prevent spray from drifting outside the target area.

(g) Do not spray during periods of rain or high wind.

(h) Provide an adequate buffer area between the application and dwellings, waterways, animals or ecological sensitive areas.








3.3.4 Notification

(a) Display approved notification signage when using pesticides in public places in accordance with Ausgrid’s Pesticide Use Notification Plan.

(b) Have the SDS available during use for employees or members of the public.

(c) Notify owners and occupiers of private property at least 48 hours prior to using pesticides on their property. Ausgrid employees can use notice of pesticide application form (EF 212).

(d) Notify owners and occupiers of sensitive places at least 5 days prior to using liquid pesticides within 20m of their premises.

(e) When engaging the community consider the principles in section 1.6.2 Community Engagement Principles.

Retain records of commercial pesticide use for 3 years.

Notification arrangements for Ausgrid’s pesticide applications





40 Emissions

4 Emissions4.1 AirFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Air impacts can include particulates (that is dust, motor vehicle emissions and smoke) and odours, fumes and gases.

Air impacts can result from excavating, stockpiling, grit blasting, demolition, sanding, grinding and welding, waste storage and transfer, vehicle movements, plant and equipment, and the use of chemicals such as paints, resins, adhesives, sealants and silicones.

Air emissions can cause complaints and harm human health, amenity and the environment.

Plant and equipment must be operated, maintained and activities carried out to prevent air pollution in accordance with legal requirements.



A specialist assessment and/or an ESCP may be required.

Definitions

Sensitive places refer to section 3.3 Pesticides.

SF6 means sulfur hexafluoride.



(b) Check the requirements of any applicable ESCP (for high risk dust generation activities).

(c) Check for exposed surfaces and sensitive places.

4.1.2 Dust prevention

Implement controls to prevent dust from leaving the worksite:

(a) Where required use water sprays to dampen (preventing water runoff) disturbed surfaces and stockpiles.

(b) Stabilise disturbed areas where a break in work of >21 days will occur (turf, geotextile, mulch, soil binders or fast growing seed).

(c) Cover loads on trucks (eg use ‘enviro-tarps’).

(d) Minimise soil disturbance (refer to section 2.1 Erosion and sediment control).

(e) Minimise excavation on windy days.

(f) Where required, install dust barriers on fences and gates.

(g) Restrict traffic movement and vehicle speeds over disturbed areas and unsealed roads.



41Emissions

(h) Where available, use dust collection devices on construction and rock breaking equipment.

(i) Undertake consultation with sensitive places that may be impacted (refer to section 4.2 Noise and vibration).

(j) When engaging the community consider the principles in section 1.6.2 Community Engagement Principles.

4.1.3 Other emissions

Prevent and minimise emissions such as sulphur hexafluoride (SF

6) other gases, fumes and air

pollutants.

(a) Handle SF6 and other gases in accordance

with approved work practices.

(b) Check vehicles and equipment are serviced regularly and operate efficiently. It is an offence for vehicles to emit smoke for a continuous period of >10 seconds.

(c) Position vehicles and equipment where the fumes will least affect receivers, where practicable.

(d) Avoid leaving vehicles or equipment idling when they are not needed.

Cover loads to prevent pollution. Prevent dust from leaving the worksite.

Erosion and sediment control plan (ESCP) are sometimes required.

SF6 recycling plant at ABB, Moorebank.

42 Emissions

Construction noise can consist of both airborne and ground-borne noise. The impacts are dependent on the type of plant and equipment, extent and nature of the work and proximity to residences and other sensitive land uses.

Noise emissions can cause complaints, harm to human health and reduce amenity.

Plant and equipment must be operated, maintained and activities carried out to prevent noise pollution in accordance with legal requirements. Restrictions and notifications apply for certain hours of work and for specific plant and equipment.

Proper management and consultation minimises impacts on the community and can help avoid costly worksite shut downs and delays.


– impacting a receiver for >3 consecutive weeks

– complaints are received about asset (transformer, CLC etc) noise


A specialist assessment and/or a noise and vibration management plan (NVMP) may be required.

4.2 Noise and vibrationFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Definitions

High impact activities such as using beeper style reversing alarms, saw cutting, vibratory rolling, grinding, rock breaking, jack hammering, bitumen milling or profiling, underboring/directional drilling and impact piling.

NVMP means a site specific noise and vibration management plan.

Out of hours work are activities undertaken outside of standard operating hours.

RMS is the NSW Roads and Maritime Services.

Sensitive receivers include residences, classrooms, hospitals, places of worship and recreation areas. Commercial premises (such as temporary. accommodation, childcare centres, restaurants) at times may be considered sensitive.

Standard operating hours are:

– Monday to Friday – 7 am to 6 pm

– Saturday – 8 am to 1 pm

– no work on Sundays or public holidays.



(b) Check the requirements of any applicable NVMP (for high impact receivers).

(c) Check for sensitive receivers.



43Emissions


(a) Keep noisy works to standard operating hours, unless the works comply with section 4.2.5 Out of hours work requirements.

(b) Operate and maintain plant and equipment in an efficient and proper manner (eg service and operate in accordance with the manufacturer’s specifications).

(c) Implement all feasible and reasonable measures to minimise construction noise. Considerations include:

Scheduling

– Avoid noisy work during sensitive time periods (eg school class/exam times, restaurant meal times, worship services).

– Provide respite periods for high impact receivers. Examples include: - 1 hour respite after 3 consecutive hours - 1 day respite after 3 consecutive days

Equipment

– Use low noise plant and equipment (eg excavators with rubber tyres, electric engines instead of internal combustion, vibratory piling instead of impact, broadband reversing alarm instead of tonal).

– Choose lower noise construction techniques (eg use poured concrete piles instead of sheet piles).

Awareness

– Avoid dropping materials from a height.

– Avoid dragging equipment and materials (eg road plates).

– Line metal trays, tipper bodies or bins.

– Undertake loading and unloading operations away from receivers.

– Shut down or throttle down machinery when not in operation.

– Be considerate on work sites (eg avoid shouting, radios, inappropriate vehicle use).

Site Layout

– Arrange the work site to take advantage of natural barriers (eg hills, trees) and structures (eg fences, work trucks, stockpiles) to break the line of sight between working equipment and receivers. Consider reflective noise.

– Position work compounds and access points away from sensitive receivers.

– Site the noisiest plant and equipment furthest away from the most sensitive receivers.

– Minimise simultaneous operation of multiple items of noisy plant/equipment in close proximity to sensitive receivers.

– Orientate the plant and equipment so that noise is directed away from sensitive receivers.

– Install portable screening around high impact activities so noise is directed away from receivers. Consider reflective noise.

– Install road plates to the RMS specification (ie recessing, inspecting and assessing noise impact, plate thickness, bearing support, additional or modified fixings to reduce noise).

– Arrange the site layout to minimise movements that would activate audible reversing and movement alarms, especially during out of hours work.

44 Emissions

Portable screening can be used to mitigate noise impacts.

4.2.3 Consultation

(a) Provide written notification to affected receivers between 4 and 14 clear business days prior to starting work unless it is emergency works or it is discussed with the affected receivers face-to-face and records kept.

(b) Give due consideration to any feedback received.

(c) Provide signage at the worksite detailing who is undertaking the works and a contact number.

(d) Provide regular updates to highly affected receivers.

(e) Provide additional notification information for works outside standard operating hours (refer to section 4.2.5 Out of hours work requirements).

(f) When engaging the community consider the principles in section 1.6.2 Community Engagement Principles.

4.2.4 Notification letters

(a) Include the following information in a standard operating hours notification letter:

– Description of the works and why they are being undertaken.

– Details of the works and the activities that will be noisy.

– Work dates and expected duration and hours.

– Contact number.

– Contact details to facilitate understanding of the notification by community members with limited English proficiency (ie Commonwealth’s Translating and Interpreting Service, TIS National).

– A marked up map or diagram clearly showing the location of the work (where beneficial).

(b) Include the following information in an out of hours work notification letter:

– Information contained in the standard operating hours notification letter

– The justification for undertaking the work outside the standard operating hours.

– Work dates, expected duration and hours during which noisy activities will be undertaken and the type of plant and equipment involved.

– Details of what is being done to minimise the impacts including any respite or curfew periods.

– How and when complaints may be lodged including 24 hour contact numbers.

Template letters are available on Ausgrid’s Environmental Planning website.


45Emissions

4.2.5 Out of hours work requirements

(a) Noisy works outside of standard operating hours can only be undertaken if the works are justified as necessary and meet one of the following criteria:

1. Are emergency works and affected receivers have been notified as soon as reasonably practicable OR

2. Complies with the conditions of any applicable EIA, EIS, REF, SER or DA that assesses out of hours works OR

3. Receivers likely to be affected have been provided with written notification between 4 and 14 clear business days prior to the works using an out of hours work notification letter (refer to section 4.2.4(b) AND the work involves one of the following:

• the delivery of oversized plant or structures that requires special approval

• maintenance and repair of essential public infrastructure that is unable to occur during standard operating hours.

• works that have majority support by the affected community as demonstrated by community consultation.

(b) Do not affect a receiver for >2 nights during any single week unless justified as necessary due to unavoidable and exceptional circumstances and targeted consultation has been undertaken.

(c) Do not affect a receiver on Sunday night (after 6pm) or Monday morning (before 7am) unless justified as necessary due to unavoidable and exceptional circumstances.

(d) Avoid high impact activities after 11 pm.

(e) Use broadband reversing alarms on vehicles and plant unless tonal alarms are justified by a safety risk assessment.

(f) Schedule the noisiest works to start at the most sensitive receivers and progressively move away, where practicable.

(g) Provide signage at the worksite detailing who is undertaking the works and a 24 hour contact numbers.

Avoid affecting a receiver for >2 nights during any single week.

Noise wall installed around construction site.

46 Emissions

4.3 Electric and magnetic fieldsFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Ausgrid’s position on electric and magnetic fields (EMF) involves providing balanced and accurate information, operating our electrical power system prudently within relevant health guidelines, and monitoring scientific research on the EMF and health.

The Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) advises that:

“The scientific evidence does not establish that exposure to the electric and magnetic fields found around the home, the office or near powerlines causes health effects.”

Definitions

ARPANSA is the Australian Radiation Protection and Nuclear Safety Agency.

EMF means electric and magnetic fields.

Exposure limits are conservatively set to prevent the occurrence of magneto-phosphenes (flashes of light which occur above 10,000µT). While this phenomenon is not itself considered an adverse health effect, ICNIRP has advised that exposure involving the head should be below this level.

ICNIRP means International Commission on Non-Ionizing Radiation Protection.

µT means microTesla, which is a unit of measurement of the strength of a magnetic field.


ICNIRP has set exposure limits for established health effects:

(a) Public exposure limit of 200µT which should also be applied to pregnant workers.

(b) Occupational exposure limit of 1,000µT (for Ausgrid workers).

(c) The minimum occupational compliance distances to the centre of a single conductor are outlined below.

Current, Amps

Compliance distance, 1,000µT

100 Always compliant



1,000 Always compliant

1,500 0.3m Approaches within these distances may still be compliant and need further assessment

2,000 0.4m

2,500 0.5m

5,000 1.0m


– you have a medical implant and work in high field environments (such as live line work, work within substations, work near heavily loaded cables and busbars) and have not had a workplace assessment

– you are pregnant and work on or near the network and have not had a workplace assessment

– EMF exposure to the public or workers could exceed the International Commission on Non-Ionizing Radiation Protection (ICNIRP) exposure limits

– public enquiries are received regarding EMF and possible health effects


A specialist assessment and/or workplace assessment may be required.












47Emissions

Examples of high field environments

Low voltage busbars Transformer tails

Cable basements Live line work

Cable tunnels Air cored reactors

4848 Contamination and waste

Contaminated land contains substances (typically from commercial or industrial activity) that exceed levels which are considered suitable for the current land use.

Exposure to contaminated soils or water, such as when excavating, can pose a risk for workers and the public. Contamination can also harm the environment and impact infrastructure such as cables, conduits and footings.

Contaminated soil must be assessed, stored and disposed in accordance with legal requirements. Specialist assessments, approvals, restrictions, management plans and notifications are required for certain activities or sites.

Definitions

Indicators of contaminated land include:

– odorous material (eg fuels, solvents, rotten egg gas)

– oil staining

– oil sheen on groundwater

– underground storage tanks (UST)

– buried waste (eg asbestos in soil, construction waste, containers)

– imported fill (eg ash, coke, asbestos)

– unusually coloured material (eg green clay)

– 132 kV transmission cable trenches installed before 1980.

Areas more likely to be contaminated include fuel or chemical storage areas (including fire-fighting foam), where oil filled equipment has been used/stored, petrol stations, dry cleaners, workshops or industrial areas.

RAP means remedial action plan.

UST underground storage tanks.


(a) Check environmental documentation for project specific EIA (refer to section 1.4 Environmental documents).

(b) Check the requirements of any applicable RAP or site management plan (for working with contaminated sites).

(c) Check for the presence of contaminated land (refer to WebGIS EL) including indicators of contaminated land.

5 Contamination and waste5.1 Contaminated land

Further information is available in Ausgrid’s WebGIS EL, Environmental Index (employees only) and Environmental Handbook reference material.


– disturbing known or indicators of contaminated land and the works have not been assessed/approved

– decommissioning a substation on private property or with indicators of contamined land where the works have not been assessed/approved


A specialist assessment, remedial action plan (RAP) or site management plan may be required.

Additional WHS requirements may apply. Refer to the SDS, if known, and advice from the local safety advisor.




49Contamination and waste

Working in contaminated areas may require special PPE.

Stop work if contamination is suspected, such as exposing an abandoned UST during excavation.

5.1.2 Potentially discovering contamination

(a) Stop work immediately and restrict access.

(b) Notify the supervisor, Environmental Services and the local safety advisor (refer to section 11 Emergency contact numbers).

(c) Isolate suspected contaminated spoil and store in a lined skip, hazibag or contain in builders plastic.

(d) Classify spoil to determine transport, tracking, licensing and disposal requirements (refer to section 5.3 Waste management).

Unusually coloured water is an indicator of contamination.

Unknown material seeping into trench needs to be assessed.


Acid sulfate soils (ASS) include sediments and soil that contain iron sulfides. They are generally found in low lying areas and near waterways such as swamps, marshes or mangroves.

When ASS are exposed to air, such as by excavating or lowering the water table, sulfuric acid may form. The acid can harm aquatic life, impact groundwater and corrode infrastructure.

ASS must be stored, handled treated or disposed in accordance with legal requirements. Additional requirements apply for managing water from ASS areas. Specialist assessments, restrictions and management plans are required for certain activities or sites.


– excavating > 50m3 in ASS at any one time

– discharging water from ASS areas or altering the water table


A specialist assessment and/or an ASS management plan (ASSMP) may be required.

Additional WHS requirements may apply. Refer to advice from the local safety advisor.

Definitions

ASS means acid sulfate soils.

ASSMP is an acid sulfate soil management plan prepared in accordance with the NSW ASS Manual and ASS Assessment Guidelines.

Indicators of ASS include:

– the presence of mangroves, reeds, rushes or swamp vegetation

– sulfurous (rotten egg) smell

– marine or estuarine sediments

– unripe muds or sediments (eg soft, buttery, blue/grey or dark greenish grey)

– milky blue/green water

– shell fragments in the soil

– low lying, waterlogged, scalded or backswamp areas

– land below 5m Australian height datum (AHD) elevation

– any jarosite (a pale yellow mineral deposit) or iron oxide (rusty) mottling

– extensive iron stains on any drain surfaces or iron stained runoff and ochre deposits

– corrosion of concrete and/or steel structures

– surface or groundwater with either a pH below 5.5 or that is unusually clear.

5.2 Acid sulfate soilsFurther information is available in Ausgrid’s WebGIS EL, Environmental Index (employees only) and Environmental Handbook reference material.

An indicator of ASS is milky blue/green water.






– Minimise the time that soil is exposed to air by staging works and storing soil in a lined and covered skip bin or wrapped in plastic.

– Re-bury soil to the same depth from which it was excavated, where practicable. In some cases treatment will be required.

– Arrange necessary testing and treatment prior to disposal.

When excavating in areas known to contain ASS, re-bury soil at the same depth from which it was excavated, where practicable.



(b) Check the requirements of any applicable ASSMP (when impacting ASS and associated groundwater).

(c) Check for the presence of ASS (refer to WebGIS EL) and indicators of ASS.

5.2.2 ASS management plan

(a) Excavation works in ASS require an ASS management plan.

(b) For excavations ≤ 50 m3 that do not impact groundwater, Ausgrid employees can use the generic ASS management plan in Ausgrid’s EWMS 167 Acid Sulfate Soils.

(c) The key control measures in this EWMS include:

– Minimise ground disturbance.

– Minimise the excavation depth.

Correctly store ASS to minimise exposure to air.

Zone of influenceZone of influence





Waste is defined as any discarded, rejected, unwanted, surplus or abandoned substance or material – even if it can be processed, recycled, reused, recovered or is intended for sale.

Improper handling and disposal of waste can harm human health and the environment.

Waste must be classified, handled, stored, transported and disposed in accordance with legal requirements. Licensing and tracking is required for certain wastes.

Good waste management minimises disposal to landfill, helps avoid environmental harm and can result in significant cost savings.



A specialist assessment and/or a WMP may be required.


Definitions

ENM means excavated natural material which is naturally occurring rock and soil that has been excavated from the ground and contains at least 98% (by weight) natural materials.

SCW means scheduled chemical waste.

VENM means virgin excavated natural material which is natural material that comes from undisturbed areas that are not contaminated (refer to section 4.1 Contamination).

5.3 Waste managementFurther information is available in Ausgrid’s WebGIS EL, Environmental Index (employees only) and Environmental Handbook reference material.

WasteLocate is the EPA’s online system to monitor the transport and management of waste tyres and asbestos waste within NSW.

WMP is a site specific waste management plan.



(b) Check the requirements of any applicable WMP (for high volume or complex waste management).

(c) Managers of licensed facilities must understand the requirements of relevant licences (for PCB and waste).


(a) Identify the types and quantities of waste that will be generated.

(b) Classify wastes to determine licensing, waste tracking and disposal requirements (refer to section 5.3.6 Waste classification).

(c) Consider the principles of avoid, reduce, reuse and recycle (refer to section 8.1 Resource use).

(d) Segregate and label waste to facilitate recycling, avoid cross-contamination and reduce disposal costs.

(e) Keep facilities including substations, depots and offices clean and tidy.






Segregate waste to facilitate recycling.

5.3.3 Storing

Ausgrid has licences for the storage of certain waste and a PCB licence for the transport and storage of PCB waste and material.

(a) Use a licensed storage facility for quantities exceeding licensing thresholds (refer to section 5.3.6 Waste classification).

(b) Do not overfill bins.

(c) Keep waste bins and containers in good condition.

(d) Cover waste that could be blown or washed away.

(e) Store waste away from drainage lines, grates, drains, inlets and waterways, where practicable.

(f) Store liquid waste as per section 2.3 Oil, fuel and chemicals.

5.3.4 Transporting

(a) Use a licensed transporter for quantities exceeding licensing thresholds (refer to section 5.3.6 Waste classification).

(b) Before trackable waste is removed from site (refer to section 5.3.6 Waste classification):

– obtain consignment approval from the receiving waste facility

– complete and sign the waste transport certificate

– follow record keeping requirements and retain any hard copies of waste tracking records for 4 years.

(c) Secure and cover loads to prevent spilling waste.

A transport licence and waste tracking is not required for transport by Ausgrid employees in Ausgrid vehicles between Ausgrid premises (eg from a substation to a depot), or for transport of waste for emergency works.

5.3.5 Disposing

(a) Dispose of waste only to facilities that are licensed to accept the waste.

(b) Dispose of waste (which is not being recycled) only to a facility within 150 km of the place of generation. If there are no appropriate facilities within 150 km, transport the waste to 1 of the 2 nearest appropriate facilities.

(c) Ausgrid employees should use bins at depots for common waste streams. Alternatively employees may contact Ausgrid’s waste contractors for collection (refer to section 11 Emergency contact numbers).

An example of poor waste segregation.

Retain hard copies of waste tracking records for 4 years.




5.3.6 Waste classification

Waste must be classified in accordance with the NSW EPA Waste Classification guidelines. Ausgrid employees can refer to EGN 323 Waste Database.

The following table shows licensing and tracking requirements for common Ausgrid wastes. The requirements below are general and exceptions may apply. Some wastes have additional requirements, including asbestos,

Waste class

Examples of pre-classified waste

Licence to store?

Licence to transport?

Waste tracking?

General solid waste

– asphalt*

– building and demolition waste - bricks, concrete and timber*

– oil filters*, rags and oil absorbent materials (no free liquids and PCB free)

– vegetation waste*

– wood poles (including treated poles)*

Yes, if: – storing >1,000

tonnes or 1,000m3, or

– receiving >6,000 tonnes per year of waste generated off-site

No No

Restricted solid waste

– Ausgrid has no pre-classified restricted solid waste

Yes, if storing >5 tonnes of waste generated off-site

Yes, in loads of >200 kg

Yes

Hazardous waste

– aerosols* (eg empty spray cans, LPG bottles)

– certain classes of dangerous goods* including pressurised gases, flammable solids, corrosive or toxic substances

– lead-acid or nickel-cadmium batteries*

– dry lead paint waste

– street lamps*

Yes, if storing >5 tonnes of waste generated off-site (60 tonnes for lead-acid batteries)


Yes, except waste batteries that are transported within NSW for recycling /re-use (must meet exemption requirements)







Waste class


Licence to store?


Waste tracking?

General solid waste

– asphalt*

– building and demolition waste - bricks, concrete and timber*

– oil filters*, rags and oil absorbent materials (no free liquids and PCB free)

– vegetation waste*

– wood poles (including treated poles)*

Yes, if: – storing >1,000

tonnes or 1,000m3, or

– receiving >6,000 tonnes per year of waste generated off-site

No No

Restricted solid waste

– Ausgrid has no pre-classified restricted solid waste



Yes

Hazardous waste

– aerosols* (eg empty spray cans, LPG bottles)

– certain classes of dangerous goods* including pressurised gases, flammable solids, corrosive or toxic substances

– lead-acid or nickel-cadmium batteries*

– dry lead paint waste

– street lamps*

Yes, if storing >5 tonnes of waste generated off-site (60 tonnes for lead-acid batteries)


Yes, except waste batteries that are transported within NSW for recycling /re-use (must meet exemption requirements)

Waste class


Licence to store?


Waste tracking?

Liquid waste

– liquid chemicals, solvents*, acids, alkalis, poisons, cleaning agents

– grease* and lubricants*

– liquid grease trap wastes*

– oil* (for PCB > 2 ppm refer to section 2.3 Oil, fuel and other chemicals)

– liquid paint

– liquid pesticides*

– septic tank waste

– accumulated water (refer section 2.2 Water Discharge)*

Yes, if storing >5 tonnes of waste generated off-site (60 tonnes for PCB free oil, drilling mud or grease trap waste)


Yes, except PCB free oil (PCB ≤ 2mg/kg) that is transported within NSW for recycling/ re-use (must meet exemption requirements)

Special waste

– asbestos (refer section 3.1 Asbestos)

– tyres*

– sharps


Yes, in loads of >200 kg (other than tyres or asbestos transported within NSW)

Yes, except sharps transported within NSW.

Waste transport monitoring (WasteLocate) is required for loads of more than:

– 200 kg or 20 waste tyres, or

– 100 kg of asbestos waste or 10m2 of asbestos sheeting

SCW, dangerous goods, PCBs, spoil from transmission trenches and radioactive waste.

Recycling opportunities available are shown with an asterisk (*) (refer to section 8.1 Resource use).







NO

• Refer to 5.3.8 Spoil from 132kV cable trenches

Is spoil from a 132kV cable trench installed

prior to 1980?

NO

YES

• Refer to 5.1.2 Potentially discovering contamination

• If storing off site, isolate and label the stockpile.

• For bulk excavations (eg zone substation site) arrange chemical testing against land use criteria.

• Classify spoil to determine transport, tracking , licencing and disposal requirements.

• Significant cost reductions can be achieved by disposing to a spoil recycler (sampling results must meet the recycler’s licence criteria).

YES

• Re-use MUST meet the conditions of the planning approval) or licence for that site.

• For ENM, comply with the requirements in section 5.4 Use of recovered materials.

Is the spoil potentially contaminated?

(refer to section 5.1)

Will spoil be re-used on the same site?

Will spoil be re-used on another site?

Is the spoil classified as VENM or ENM?

NO

• Obtain a classification letter from a suitably qualified person to certify that the spoil is VENM/ENM. (ENM) requires chemical testing.

YES

YES

YESNO

NO

5.3.7 Management of spoil


5.3.8 Spoil from 132kV cable trenches

Spoil from below the slab of Ausgrid’s 132kV cable trenches installed prior to 1980 should be treated as SCW unless tested otherwise. SCW is subject to controls including licences and approvals for storage, transport and disposal.

NS156 Working Near or Around Underground Cables details specific requirements for managing this spoil. Controls include:

(a) Workers handling and transporting the spoil require specific training and PPE.

(b) Clearly label and maintain packages, containers and storage areas.

(c) Keep spoil from below the slab separate to spoil from above the slab.

(d) Store spoil in a plastic lined and covered bin.

(e) Reinstate spoil on-site rather than disposing off-site, where practicable.

(f) When storing >1 tonne of SCW comply with a licence (under the EHC Act).

(g) Refer to section 2.2 Water Discharge for requirements for managing water from Ausgrid’s 132kV cable trenches.

Stockpile suspected contaminated spoil separately for it to be tested and disposed of appropriately.






5.4 Use of recovered materialsFurther information is available in Ausgrid’s WebGIS EL, Environmental Index (employees only) and Environmental Handbook reference material.

The use of recovered materials (such as crushed concrete and recovered soil) if undertaken correctly can reduce a project’s cost and environmental impact.

Resource Recovery Orders (RROs) for generators and Resources Recovery Exemptions (RREs) for receivers, specify requirements that must be met before applying recovered material to land.

Providing and receiving contaminated materials (eg with asbestos) can harm human health and the environment.


– receiving > 20m3 of ENM, recovered aggregates or recovered fines

– planning to provide recovered materials to third parties


A specialist assessment and/or risk management protocol (RMP) may be required.


Definitions

Agricultural land is land used for broad acre cropping, pasture, horticulture, growing fruit and keeping livestock.

ENM refer to section 4.3 Waste management.

Environmentally sensitive areas (for mulch) include areas as defined in the mulch order (eg National Parks, Crown land, critical habitat, coastal wetlands).

Recovered aggregates include crushed concrete, brick, rock, asphalt and ceramics, other than refractory bricks and materials.

Recovered fines is a soil or sand type material (particle size < 9.5 mm) derived from the processing of mixed construction and demolition waste.

RMP means a site or project specific risk management protocol.

RRO means Resource Recovery Order which applies to generators of recovered material.

RRE means Resources Recovery Exemptions which applies to receivers of recovered material.



(b) Check the requirements of any applicable RRO or RRE (for generating/accepting recovered materials).

(c) Check for environmentally sensitive areas (for mulch) (refer to WebGIS EL) or agricultural land.

Use of recovered materials must comply with orders and exemptions.













(a) When recovered materials are applied to land, comply with the conditions of an RRO (for generators or processors of the recovered material) and RRE (for receivers or consumers).

(b) Apply material to land within a reasonable period of time after its receipt.

5.4.3 Receiving ENM, recovered aggregates and recovered fines

(a) Obtain a statement from the supplier that the material meets all sampling and other requirements in the relevant order.

(b) During unloading, arrange visual inspection for ACM by an Ausgrid Level 3 asbestos trained worker or otherwise suitably qualified person.

(c) Keep records of the quantity of material received and the suppliers’ name and address for 6 years.

(d) Do not use recovered aggregates or fines in the following situations as heavy metals and high pH may cause water pollution:

– around waterways or for drainage applications such as stormwater drainage or infiltration areas

– unsealed roads that would be subject to significant stormwater flows.

(e) Prior to receiving any recovered aggregates or fines:

– check the supplier holds an EPL for processing the relevant material (EPA licence register)

– obtain a statement from the supplier that they comply with the relevant EPA protocols for managing asbestos during resource recovery of construction and demolition waste

– obtain a copy of the supplier’s material receiving inspection process.

5.4.4 Receiving mulch which was generated at another site

(a) Comply with any controls provided by the supplier (which may be specified as part of an RMP required by the mulch order).

(b) Do not allow the migration of leachate from the application site.

5.4.5 Supplying mulch for use on another site

(a) Only supply mulch in accordance with a RMP prepared in accordance with the mulch order.

(b) Visually inspect plant material for weeds, diseases and pests prior to mulching.

(c) Do not supply mulch from Ausgrid tree-trimming activities for use in an environmentally sensitive area (for mulch) or on agricultural land.

(d) Provide documentation to the receiver detailing their obligations and the specific environmental controls in the RMP.

(e) Keep written records of the RMP and visual inspections for 6 years.

Do not supply mulch from Ausgrid tree-trimming activities for use in an environmentally sensitive area (for mulch) or on agricultural land.



60 Ecology

6 Ecology 6.1 VegetationFurther information is available in Environmental Index (employees only), Ausgrid’s WebGIS EL (authorised workers only) and Environmental Handbook reference material.

ISSC3 is the NSW Industry Guide for the Management of Vegetation in the Vicinity of Electricity Assets.

Non-destructive digging includes hand digging, hydro vacuum excavation, air excavation or knifing or vacuum excavation.

OEH is the NSW Office of Environment and Heritage.

SRZ means structural root zone which is the area where the roots provide critical structural stability for the tree.

TPZ means tree protection zone, which is the area set aside for the protection of a tree’s roots and crown to maintain the tree’s long-term viability.



(b) Check the requirements of any applicable approvals (for impacting protected vegetation).

Additional requirements may apply for significant, memorial or heritage trees or gardens (refer to section 7.1 Aboriginal heritage and 7.2 Non-Aboriginal heritage).

(c) Check for ecological sensitive areas (refer to WebGIS EL), native vegetation and bushland.

6.1.2 Works in ecological sensitive areas

(a) Works in ecological sensitive areas require a specialist assessment and/or approval unless all of the following controls are implemented:

Vegetation includes trees, plants, shrubs and groundcover. Some vegetation is considered more significant because it is threatened and/or plays an important role in the ecosystem.

Vegetation can be impacted by clearing, trimming, physically damaging trunks and root structures, compacting, waterlogging, contaminating, or changing the height of the surrounding soil.

Potential impacts to vegetation must be assessed and managed in accordance with legal requirements. Specialist assessments, approvals and restrictions apply to certain activities and/or ecological sensitive areas.


– works will impact ecological sensitive areas (refer to section 6.1.2) and have not been assessed/approved by an EIA, approval, licence or permit


A specialist assessment and/or an approval may be required.

Definitions

Ecological sensitive areas include native vegetation, bushland, national park estate, threatened species, endangered ecological community, critical habitat, wilderness areas, biobank sites, biodiversity offsets, marine parks, coastal wetlands and littoral rainforests, seagrass, saltmarsh, mangroves or wetlands.

FM Act means the NSW Fisheries Management Act 1994.








61Ecology

– All workers to be made aware of ecological sensitive areas and the need to avoid impacts.

– No works in undisturbed areas (including storing equipment, parking vehicles or accessing the site).

– No disturbance of bush rock, tree hollows, wetlands, mangroves, nests, aquatic or other sensitive habitats.

– Retain ground cover vegetation.

– Keep vehicle and plant movements to existing roadways or access tracks.

– No importing mulch from other sites.

– No disturbance of native vegetation unless all of the following apply:

– works are for the purpose of vegetation maintenance

– works are undertaken in accordance with ISSC 3, NS179 Vegetation Management and Ausgrid’s Tree Safety Management Plan.

– clearing is to the minimum extent necessary to maintain existing and regularly maintained clearances (ie no new clearance envelopes).

(b) When undertaking inspection, maintenance and emergency works in national park estates, comply with the OEH Protocol and Consent. Conditions include:

– Provide at least 4 days’ notice for inspection works (unless the inspections are undertaken by foot or passenger vehicle and do not require the use of equipment).

– Provide at least 2 weeks’ notice and a conservation risk assessment for maintenance works.

– Provide notice as soon as practicable after any emergency works have been undertaken.

Powerlines within an endangered ecological community at Chullora.

Threatened species, Diuris arenaria, adjacent to powerpoles at Anna Bay.

Notifications and risk assessments are required for inspection and maintenance works within national park estates.






62 Ecology

6.1.3 General requirements when working around vegetation

(a) Minimise clearing and disturbance of all vegetation.

(b) Where available, use existing roadways or access tracks.

(c) No clearing of vegetation within 40m of a natural waterway.

(d) Minimise activity (storage areas, stockpiles, vehicle parking, and access) within the TPZ (refer to the TPZ and SRZ radius diagrams).

(e) Establish exclusion zones by restricting access to prevent damage to native vegetation and fauna habitats.

(f) Protect trees from mechanical damage. Controls to consider include fencing or strap boards with padding.

(g) Minimise the removal of ground cover and understorey vegetation.

(h) Implement controls to prevent the spread or introduction of weeds and pathogens in ecological sensitive areas by maintaining vehicle and equipment hygiene (refer to section 6.3 Biosecurity).

(i) Consider the use of matting/mulching on the soil surface to reduce compaction or root damage from unavoidable traffic

movements (refer to section 5.4 Use of recovered materials if using mulch).

(j) Consider watering stress affected trees during the construction process.

(k) Designate areas for access and storage to avoid soil compaction in the TPZ.

6.1.4 Trenching

Assess the site

(a) Identify the location of vegetation in the vicinity of the work.

(b) Use the equation in the TPZ and SRZ radius diagram to determine the radius of the SRZ and TPZ (refer to EGN 425 TPZ/SRZ calculator).

(c) Identify any recent incursions into the SRZ and their potential impacts to tree stability. Examples could include a new kerb and gutter or evidence of trenching.

Locate the trench to minimise root damage

(a) Trench outside the SRZ to avoid making the tree unstable.

(b) Where cables must be laid within the SRZ, underbore/directional drill at least 600 mm beneath the ground surface, or use non-destructive digging.

(c) Trench outside the TPZ, where practicable. Impacting >10% of the TPZ can affect the long-term health of the tree.

Filtersair

Shades

Producesoxygen

Provideswind break

Aesthetics

Habitat

Social/Culturalvalues

Economicvalue

Salinitycontrol

Stabilisessoil

Compaction of soil from storage of materials and

equipment

Raising of soillevels starves

roots

Contamination from chemical storage

Root damagefrom trenching

Mechanicaldamage to tree

from vehiclemovements

TPZ radius

Activities undertaken within the TPZ can impact a tree’s health and stability.

Vegetation provides a range of benefits.



63Ecology

TPZ

SRZ

TPZ radius

SRZ radius

Trunk

Trench

Normalexcavation

Normalexcavation

Underbore/directional

drill, hard digor use an air

knife

Leaving roots intact maintains the health and structural integrity of the tree.

Trench outside the SRZ and TPZ. Where cables must be laid within the TPZ but outside the SRZ, implement appropriate controls.

Strap boards and padding to the trunk to prevent damage to the bark.

(d) Where cables must be laid within the TPZ, minimise the extent impacted. For significant encroachments, underbore/directional drill at least 600 mm beneath the ground surface, or use non-destructive digging.

Implement controls to minimise root damage

(a) Where roots are exposed for extended periods of time, wrap larger roots (>50 mm diameter) in jute mesh or hessian and keep moist.

(b) If roots need to be severed, cut the roots with a clean sharp implement at the trench edge and do not apply any type of liquid or material to the severed root end.

(c) Avoid discharging water on an ongoing basis in the same area as it may waterlog the soil and affect the tree’s health.

(d) Wash down plant and equipment outside the TPZ.

Reinstate the site

(a) Minimise changes in soil levels in the TPZ.

(b) When increasing soil levels is unavoidable in the TPZ, use porous fill material.

(c) Consider retaining top soil and spread back on the backfilled trench surface to maintain the integrity of the seed bank (to allow faster regrowth).

(d) Avoid compaction in the TPZ.

(e) If surface sealing around trees is required, use a material which allows aeration (eg gravel, unit pavers, coarse sand).

64 Ecology

TPZ and SRZ radius diagram

Refer also to EGN 425 TPZ/SRZ Calculator.

TPZ radius (m) = 12 x diameter (m) of the trunk at 1.4 m above the ground

SRZ radius (m) = 0.64 x [50 x diameter (m)] 0.42 where the diameter is measured above the root buttress

Maximum 15 m

Minimum 2 m

Minimum 1.5 m

0.1 1.1 1.51 1.41.2 1.30.2 0.90.3 0.4 0.5 0.6 0.7 0.8

16

14

12

10

8

6

4

2

0

Diameter (m)

Rad

ius

(m)

TPZSRZ

Note: Radius (m) = ½ diameter (m). Diameter (m) = circumference (m) / 3.14.

Diameter above root buttress

Diameter at 1.4m

TPZ radius

SRZ radius

Note: Palms and ferns have a SRZ and TPZ of 1m outside of the crown (the branches and leaves).


65Ecology

STEP 1. Under cut to prevent tearing.

STEP 2. Then top cut to remove the branch.

STEP 3. The final cut to remove to the collar.

6.1.5 Pruning

(a) Pruning tree limbs >100 mm diameter should be under the direction of workers trained in an Ausgrid recognised course and familiar with AS 4373 Pruning of amenity trees (unless for emergency works).

(b) Protect and retain the branch collar and branch bark ridge during pruning. Damaging branch collars increases the risk of infection and decay.

(c) Prune trees and other vegetation no more than the minimum required to meet network clearance and safety requirements.

(d) Use the step cut method when pruning branches.

6.1.6 Routine vegetation maintenance around mangroves

(a) When trimming mangroves, comply with Ausgrid’s permit under the FM Act.

– Conditions of the permit include notification requirements, site delineation, restrictions on material storage and stockpiling, requirements for site restoration and clean up, machinery access restrictions, no go areas and visual inspections.

When trimming mangroves, comply with Ausgrid’s permit under the FM Act.

Pruning using the step cut method

Top cut

Under cut

Remove

1

2

3

NONO

NO

YESYESBranchcollar

Branchbarkridge

The right and wrong positions for pruning

Do not leave a stub and do not flush cut.




66 Ecology

6.2 Wildlife habitatFurther information is available in Environmental Index (employees only), Ausgrid’s WebGIS EL (authorised workers only), and Environmental Handbook reference material.

Wildlife habitat includes areas that provide feeding, roosting, breeding, nesting and refuge for animals. Some habitat is considered more significant because it supports threatened fauna and/or plays an important role in the ecosystem.

Wildlife habitat impacts can result from removing or damaging vegetation, hollow bearing trees, dead trees, bushrock and aquatic environments.

Potential impacts to wildlife habitats must be assessed and minimised in accordance with legal requirements. Specialist assessments, approvals and restrictions apply to certain activities and/or ecological sensitive areas.


– works will impact ecological sensitive areas (refer to section 6.2.2) and have not been assessed/approved by an EIA, approval, licence or permit

– wildlife is detected and is likely to be impacted by the works



Contact local wildlife rescue organisations for the rescue or care of wildlife (refer to section 11 Emergency contact numbers).

Definitions

Ecological sensitive areas include ecological sensitive areas described in section 6.1 Vegetation and tree hollows, bush rock and nests.

NPWS is the NSW National Parks and Wildlife Service.



(b) Check the requirements of any applicable approvals (impacting wildlife).

(c) Check for ecological sensitive areas (refer to WebGIS EL), tree hollows, bush rock, nests and evidence of wildlife.

6.2.2 Works in ecological sensitive areas

Impacting habitat or ecological sensitive areas requires a specialist assessment, approval, consent or permit unless all of the following apply:

– All workers to be made aware of ecological sensitive areas and the need to avoid impacts.

– No works in undisturbed land (including storing equipment in, parking vehicles in or accessing the site).

– No disturbance of bush rock, tree hollows, wetlands, mangroves, nests, aquatic or other sensitive habitats.

– Retain ground cover vegetation.


– No importing mulch from other sites.

– No disturbance of native vegetation unless:

– Works are for the purpose of vegetation maintenance.

– Works are undertaken in accordance with ISSC 3, NS179 Vegetation management and Ausgrid’s Tree Safety Management Plan.

– Clearing is to the minimum extent necessary to maintain existing and regularly maintained clearances (ie no new clearance envelopes).









67Ecology

Tree hollows are a valuable and essential resource for many wildlife species. They are used for nesting, roosting and offer refuge from weather and predators.

Contact wildlife rescue organisations to assist with the rescue of wildlife (refer to section 11 Emergency contact numbers).


(a) Minimise clearing and disturbance of all vegetation (refer to section 6.1 Vegetation).

(b) Consider using locally native species for landscaping or habitat restoration works where required.

(c) Provide an escape route (eg log or stick) for fauna if trenches or pits will be open overnight.

6.2.4 Wildlife around the network

Animals can use poles, substations, pits and other buildings and structures for nesting.

(a) Inspect the worksite for animal occupation prior to starting work.

(b) Where animals are present (eg birds, possums, snakes, bats) wait for the animal to relocate.

(c) Where animals (including eggs and nests) need to be physically relocated contact a local wildlife rescue organisation or NPWS.

(d) Removal of dead bats and their pups from powerlines must be undertaken in accordance with Be Safe Fact Sheet 44 Grey-Headed Flying-Fox (Bat) Removal.


68 Ecology

6.3 BiosecurityFurther information is available in Environmental Index (employees only), Ausgrid’s WebGIS EL (authorised workers only), and Environmental Handbook reference material.

Weeds are invasive plants that are not native to the area. Pathogens are disease causing microrganisms such as bacteria, fungi or viruses.

The spread of weeds can impact agriculture, human health and the environment. Pathogens, such as Myrtle Rust, can cause infectious diseases, ‘dieback’ and plant death.

Clothing, footwear, tools, equipment, machinery and vehicles can transport weeds and pathogens into bushland.

The spread of weeds and pathogens must be controlled in accordance with legal requirements. These requirements include the principle of shared responsibility, which means everyone is doing what is reasonable and practicable for them to prevent, eliminate or minimise biosecurity risks.

Specialist assessments, restrictions and notifications apply to certain activities and/or areas.




Definitions

Biosecurity means preventing and responding to pests and diseases that threaten the economy and environment.



(b) Check for national park estate (refer to WebGIS EL).

(c) Check for the presence of weeds and pathogens (refer to weed identification tool).

6.3.2 Works in bushland and/or infested areas

Planning

(a) Adopt a come clean, go clean approach to all activities, minimising the risk of spreading pests, weeds and diseases between properties.

(b) Minimise the vehicles and equipment brought to the site.

(c) Minimise the number of sites visited in one day.

(d) Establish entry and exit points away from weeds and pathogen infested areas, where practicable.

(e) Program works from least to most infested areas, where practicable.

(f) Schedule work for a day when the soil is dry and doesn’t stick to footwear, equipment and tools, where practicable.

(g) When in national park estates, comply with the OEH protocol and consent (refer to section 5.1 Vegetation).









69Ecology

At site entry and exit

(h) Choose clean down sites:

– where soil and seed matter would be contained.

– away from watercourses and drains.

– close to infested areas (if practicable).

(i) Prior to entering bushland or leaving an infested area, clean footwear, tools, equipment, machinery, and vehicles with a hard brush or stick to remove as much mud, soil and organic matter as practicable before disinfecting with a solution of 70% methylated spirits and 30% water applied through a spray bottle.

(j) Look for and be mindful of any signs that might indicate biosecurity risks or practices that need to be followed. If in doubt contact the landowner.

During and after works

(k) Where available, use existing roadways or access tracks.

(l) Bag weeds and tree branches that are infested with pests and diseases, where practicable.

(m) When disposing of weeds or pathogen infected plants, cover loads to prevent seeds and other live plant material from dispersing, and contact the receiving facility prior to delivery.

(n) Where off-site disposal cannot be undertaken, plants that are not in seed can be left where found.

(o) Change and launder work clothes after working in areas containing known weeds or pathogens.

Vehicles and machinery can spread weeds from infested areas to weed-free locations.

Disinfect plant and equipment before entering bushland or leaving infested areas.

70 Ecology

Myrtle Rust (Puccinia psidii)*

Madeira Vine (Anredera cordifolia)*

Pampas Grass (Cortaderia spp.)*

Prickly Pear (Opuntia spp.)*

Lantana (Lantana camara)*

Some common weeds and pathogens in Ausgrid’s network area.

*PHOTOS COURTESY OF NSW DEPARTMENT OF PRIMARY INDUSTRIES.

**PHOTO COURTESY OF H. CHERRY, NATIONAL WONS PROGRAM.

Green Cestrum (Cestrum parqui)*

Groundsel Bush (Baccharis halimifolia)*

Bitou Bush (Chrysanthemoides monilifera subsp. rotundata)**

European Blackberry (Rubus fruticosus agg.)*

Crofton Weed (Ageratina adenophera)*

Broad leaf pepper (Schinusterebinthifolius)*

Grey Sallow (Salix cinerea)*

Paper Mulbery (Broussonetia papyrifera)*

Yellow bells (Tecoma stans)*

71Ecology

6.4 Total Fire BansFurther information is available in Ausgrid’s Environmental Index (employees only), Ausgrid’s Bushfire Risk Management Plan and Environmental Handbook reference material.

Bushfires pose a risk to life, property and the environment throughout rural and urban areas in our network area.

Bushfires can be caused by a variety of factors, including lightning strikes, sparks from plant and equipment, vehicle crashes, and electrical incidents such as fallen powerlines.

Total Fire Bans may be declared to reduce the risk of fire. They are generally declared at 5 pm and are effective for 24 hours beginning at midnight.

The statutory Bushfire Ban period runs from 1 October to 31 March, however it may vary due to local conditions. In a Total Fire Ban no fire may be lit in the open unless in accordance with an exemption.

The risk of fire must be controlled in accordance with legal requirements. Specialist assessments, restrictions and notifications apply to certain activities and/or areas.




Definitions

High risk activities include:

– Undertaking hot work.

– Driving a vehicle through long grass or operating motors and equipment in proximity to vegetation.

– Leaving fuel sources unattended at construction compounds and out of work hours.

– Discarding cigarette butts (also an offence under the POEO Act).

– Operating switches or working on overhead mains which have the potential to generate arcing by-products.

– Operating motors and other equipment which get considerably hot during operation.

Hot work includes grinding, welding, brazing, oxy-cutting, heat treatment or processes that generate heat or continuous streams of sparks.



(b) Check the requirements of any applicable Total Fire Ban exemption (hot work during a total fire ban).

(c) Review high risk activities, assess the risk and consider the need for additional controls.

Hot work during a total fire ban must comply with an exemption.





72 Ecology

6.4.2 Hot work activities

During a Total Fire Ban, no fire may be lit in the open unless in accordance with an approved exemption. Exemptions contain specific precautions that must be implemented.

Additional precautions apply for hot work whether or not a Total Fire Ban is in force:

(a) Light and maintain fires in a manner which will prevent the escape of fire, sparks, incandescent or burning material.

(b) Check equipment is fit for purpose.

(c) Supervise hot work for the entire time (ie never leave a naked flame unattended).

(d) Schedule hot work activities to lower Fire Danger Rating periods, where practicable.

(e) Keep hot work activities clear of combustible matter by at least 3m.

(f) Isolate hot work activities using appropriate warning barriers and signage.

(g) Keep adequate fire fighting equipment immediately on hand.

Ausgrid has 2 exemptions which allow employees to use naked flames during Total Fire Bans subject to certain conditions detailed in DG 33 Hot works and Total Fire Bans.

Exemption 1 – Urgent and essential repairs or maintenance

This exemption relates to undertaking urgent and essential repairs or maintenance. Conditions in this exemption include the manner in which works are undertaken and access to fire fighting equipment.

Exemption 2 – Specific purposes

This exemption relates to using naked flames for the purposes of:

– heat shrinking materials using a blow torch for short periods

– melting small amounts of lead, bitumen and oil over a gas stove

– replacing a damaged cover over conductors with heat shrink sleeves.

Conditions include discussing the work/event with the local NSW Rural Fire Service Zone/District Manager or the Officer in Charge of the nearest Fire and Rescue NSW Fire Station. (Refer to section 10 Emergency contact numbers.)

Other conditions in this exemption include the manner in which works are undertaken and access to fire fighting equipment.

Schedule hot work activities to lower Fire Danger Rating periods, where practicable.







73Heritage

7 Heritage7.1 Aboriginal heritageFurther information is available in Environmental Index (employees only), Ausgrid’s WebGIS EL (authorised workers only) and Environmental Handbook reference material.

Definitions

Aboriginal heritage sensitive areas include:

– Within the buffer of known Aboriginal heritage.

– Natural rock outcrops.

– Undisturbed land with the following landscape features:

– within 200m of waters, or

– within a sand dune system, or

– on a ridge top, ridge line or headland, or

– within 200m below or above a cliff face, or

– within 20m of or in a cave, rock shelter, or a cave mouth.



(b) Check the requirements of any applicable approvals (for working near Aboriginal heritage).

(c) Check for Aboriginal heritage sensitive areas (refer to WebGIS EL).

7.1.2 Works in Aboriginal heritage sensitive areas

(a) Works in Aboriginal heritage sensitive areas require a specialist assessment and/or approval unless all of the following controls are implemented:

Aboriginal heritage includes objects and places with evidence of Aboriginal occupation or with special cultural significance. These can include artefacts, middens, axe-grinding or tool sharpening grooves, scarred or carved trees, paintings, rock engravings and burial sites.

Aboriginal heritage impacts can result from disturbing the ground surface and clearing vegetation including groundcover.

Potential impacts to Aboriginal heritage must be assessed and managed in accordance with legal requirements. Specialist assessments, consultation, permits, approvals and restrictions apply to certain activities and/or Aboriginal heritage sensitive areas.


– works will impact Aboriginal heritage sensitive areas (refer to section 7.1.2) and have not been assessed/approved by an EIA, approval, licence or permit

– Aboriginal heritage is potentially discovered







74 Heritage

Undisturbed land includes rock outcrops.

(b) Where appropriate, erect barricades or signage to prevent access to known Aboriginal heritage objects and places.

7.1.3 Potentially discovering Aboriginal heritage


(b) Notify the Supervisor and Environmental Services. Environmental Services will contact the regulator if required.

– All workers to be made aware of the potential for Aboriginal heritage objects.

– No disturbance of the ground surface including rock outcrops and ground cover.


– Use plant and equipment that have only rubber tyres.

– No disturbance to native vegetation unless all of the following apply:

– Works are for the purposes of vegetation maintenance.

– Works are undertaken in accordance with ISSC 3, NS179 Vegetation management and Ausgrid’s Tree Safety Management Plan.

– Clearing is restricted to the minimum extent necessary to maintain existing and regularly maintained clearances (ie no new clearance envelopes).

Shell midden (debris from eating shellfish and other food).

Scarred tree (caused by manufacture of canoes, shields and other artefacts).

Stone flakes (product of tool making). Aboriginal rock art.





75Heritage

7.2 Non-Aboriginal heritageFurther information is available in Environmental Index (employees only), Ausgrid’s WebGIS EL (authorised workers only) and Environmental Handbook reference material.

Non-Aboriginal heritage includes items and places that are valued because of their historical, archaeological, cultural or architectural significance.

Heritage can include buildings, cobblestone roads, sandstone gutters, trees, parks, electrical equipment and archaeological sites. Classes of significance include Local, State, National and World.

Ausgrid owns around 200 heritage listed substations of either state or local heritage significance and maintains a register of potential moveable heritage items.

Non-Aboriginal heritage impacts can result from physical alterations, excavations and item relocations.

Potential impacts to non-Aboriginal heritage must be assessed and managed in accordance with legal requirements. Specialist assessments, notifications, permits, approvals and restrictions apply to certain activities and/or non-Aboriginal heritage sensitive areas.


– works will impact non-Aboriginal heritage sensitive areas (refer to section 7.2.1) and have not been assessed/approved by an EIA, licence or permit

– non-Aboriginal heritage is potentially discovered



Definitions

Non-Aboriginal heritage sensitive areas are known non-Aboriginal heritage, archaeological areas, conservation areas or movable heritage assets.

SOHI means a statement of heritage impact.



(b) Check the requirements of any applicable approvals, permits or exemptions (when impacting heritage).

(c) Check the requirements of any applicable conservation management plans (when impacting Ausgrid’s state heritage buildings).

(d) Check for non-Aboriginal heritage and non-Aboriginal heritage sensitive areas (refer to WebGIS EL).

7.2.2 Works in non-Aboriginal heritage sensitive areas

Works in non-Aboriginal heritage sensitive areas require a specialist assessment, and or approval unless all of the following controls are implemented:

(a) All workers to be made aware of the presence of non-Aboriginal heritage in the area and the need to avoid impacts.

(b) No impact to World or National heritage areas.






76 Heritage

Ausgrid owns around 200 heritage listed substations.

(c) No works to or within the property boundary of state heritage items unless in accordance with an approved conservation management plan or exemption.

(d) No more than minor or inconsequential impacts to local heritage items without a SOHI.

(e) No excavations within an archaeological area unless in accordance with an exemption.

(f) No impact to Ausgrid’s movable heritage.

(g) No physical alterations to Ausgrid’s s170 heritage items unless complying with:

– Ausgrid’s heritage exemptions (for local heritage),

– EG 261 Conservation for heritage distribution substations (for distribution substations) and

– Ausgrid’s conservation management plans (for State heritage).

(h) No impact to potential heritage items such as sandstone gutters, cobblestone roads or sandstone walls.

7.2.3 Heritage exemptions

There are 3 exemptions under the Heritage Act 1979 that apply to Ausgrid’s activities. Ausgrid employees can find more information in EG 260 Non-Aboriginal Heritage Guideline for specific information regarding exemptions.

Exemption 1 - S57 Standard

This exemption relates to some maintenance and basic activities on State Heritage items such as cleaning and repairs. Conditions in this exemption include using appropriately skilled workers, providing notifications and in some cases obtaining a permit.

Exemption 2 - S57 Specific Ausgrid

This exemption relates to minor works and activities on Ausgrid’s State Heritage items. Ausgrid is exempt from obtaining Heritage Council approval for specific activities provided approval is obtained by a person with demonstrated heritage expertise.

These activities include replacement of some types of equipment, installing fire mitigation apparatus, replacement of asbestos roofing systems, minor security works, excavation and reinstatement of conduits, cables, services and

1930s Ferguson Pailin high voltage metal clad switchgear.
















77Heritage

Heritage drain encountered during excavation within a roadway.

pipes when within existing cable egress areas or cable jointing areas, limited minor internal works to the building, temporary works, safety or information signs, installation of oil containment systems, limited ventilation and air conditioning works.

Exemption 3 - S139

This exemption relates to excavations in archaeological areas where the excavation or disturbance of land is:

– For the purpose of exposing underground utility services infrastructure which occurs within an existing service trench and will not affect any other relics.

– To carry out inspections or emergency maintenance or repair on underground utility services and due care is taken to avoid effects on any other relics.

– To maintain, repair or replace underground utility services to buildings which will not affect any other relics.

7.2.4 Potentially discovering non-Aboriginal heritage


(b) Notify the Supervisor and Environmental Services. Environmental Services will contact the regulator if required.

Sandstone kerb (potential heritage).


78 Resource use

8 Resources8.1 Resource useFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Resource efficiency applies to all life cycle stages from acquisition of raw materials, design, production, transportation/delivery, use, end-of-life treatment to final disposal.

Benefits from resource efficiency include reduced waste, conserving energy and water, preserving waterways, and reduced odour and emissions.

Resource efficiency also makes good commercial sense by increasing cost savings, reducing risk and enhancing the company’s reputation.





(b) Consider the supply chain when procuring products and services (employees can use Be Safe Pro14.1F Risk Assessment Worksheet for Purchasing Goods).

8.1.2 Resource efficiency hierarchy

(a) Give consideration to avoiding, reducing, reusing and recycling for all aspects of the life cycle. Controls include:

Avoid and reduce

– Use recycled materials for construction and groundwork with appropriate design advice.

– Use timber from sustainable sources and avoid imported timber sourced from native or old growth forest.

– Use steel and concrete with recycled content with appropriate design advice.

– Use energy and water efficient appliances, fixtures, lighting, plant and equipment.

– Consider design to reduce ongoing maintenance requirements.

– Consider design of cut and fill so that no spoil leaves or enters the site.

Reuse

– When using recovered materials (such as mulch, ENM, VENM and aggregates), comply with applicable orders and exemptions (refer to section 5.4 Use of recovered materials).

– Reuse concrete, bricks, formwork, structural materials, fill, topsoil, plants, and turf.

– Maximise the salvage of building elements and fittings on demolition projects for reuse.

– Coordinate use of materials between jobs as excess materials may be suitable for other sites.

– Return excess building material to the supplier.

– Reuse rainwater for vehicle washing and irrigation.

Recycle

– K eep materials segregated so they can be reused or recycled.

– Recycle materials including scrap metal and cable, cable drums, paper and cardboard, street lamps and fittings, hard hats, batteries, bricks, concrete, plastics, timber, Bioguard bandages, expired first aid items and old uniforms.







79Resource use

Water restrictions are sometimes imposed by water supply authorities. When a restriction is in place water use must be undertaken in accordance with an exemption.

In addition, water saving rules apply in a number of areas across Ausgrid’s network.



An exemption or specific authorisation may be required.



(b) Check if water restrictions are in place and if a water use exemption applies to the work (water use during restrictions).

(c) Check the water saving rules relevant to the water supply authority (water use).

(d) Users of washbays must understand the requirements of the permit from the relevant water supply authority.

8.2.2 Water restrictions

If water restrictions are in place and working under a water use exemption:

(a) Undertake exempt activities in accordance with the conditions of the exemption.

(b) Display exemption and authorisation permits at the work site.

(c) Minimise water use.

8.2 Water useFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

8.2.3 Water saving rules

When using water, comply with water saving rules relevant to the water supply authority. These generally include:

(a) Use trigger nozzles for watering.

(b) Water gardens only before 10 am and after 4 pm.

(c) No hosing of hard surfaces such as paths, concrete or other paved surfaces except for health, safety, emergency or construction.

(d) Use a bucket, watering can or hose fitted with a trigger nozzle to wash vehicles.

Use of recycled water and bore water are generally exempt from the water saving rules.

8.2.4 Washbays

When using a washbay, comply with the permit from the relevant sewage authority. Typical requirements include:

(a) Only wash water is to enter the wash bay drain (eg no oil, hydraulic fluid, degreaser).

(b) Use only ‘quick break’ detergents.

(c) Clean up oil and chemical spills and leaks immediately using spill absorbents.

(d) Remove debris from the wash bay slab and drain after each use.

Use washbays in accordance with a permit.












80 Handbook checklist

9 Handbook checklistFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Undertaking regular inspections, keeping records, addressing issues and improving environmental performance are good ways to demonstrate that reasonable steps have been taken to achieve environmental compliance.

The following checklist can be used as prompts to help evaluate compliance with the requirements of this Handbook. A more detailed inspection checklist is available in AsdeqForms on Field tablets (employees only) or the Environmental Handbook reference material.

Question Reference

Are all workers aware of their environmental responsibilities and appropriately trained?

Section 1.3 Responsibilities

Is this Environmental Handbook and all applicable EIAs (EIS, REF, SER, DA), approvals, licences, permits, issue specific management plans (CEMP, ESCP, WTMP, EWMS, NVMP, RAP, ASSMP, WMP, RMP) on-site and understood?

Section 1.4-1.5 Documents and planning

Are the controls adequate to manage community impacts (notification letters include information about what is happening, when it is happening, why it is required and who to contact)?

Section 1.6 Community

Are the controls adequate to prevent sediment, drilling fluid/mud and saw cutting runoff from entering a stormwater drain or waterway?

Section 2.1 Sediment

Do all water discharges from pits, trenches and substations meet the specific discharge criteria?

Section 2.2 Water

Are oil, fuel and other chemicals handled, transported and stored in a manner to prevent and if necessary contain and control a leak or spill?

Section 2.3 Chemicals

Is the potential for asbestos assessed and where identified managed in accordance with training, PPE, licencing, record keeping, notification, bagging, transport, waste tracking, disposal and specific work instruction requirements?

Section 3.1 Asbestos

Are all PCBs appropriately classified, handled, transported, stored, labelled, disposed and managed in accordance with Ausgrid’s PCB licence?

Section 3.2 PCBs

Are pesticide applications restricted to target areas, approved for use, not used during rain or high wind, used in accordance with the label and in compliance with training, record keeping, notification and signage requirements?

Section 3.3 Pesticides

Are the controls adequate to prevent dust, fumes and other gases from leaving the work site?

Section 4.1 Air





81Handbook checklist

Question Reference

Are the controls adequate to minimise construction noise impacts (eg scheduling, equipment, awareness, site layout) and in compliance with the notification and out of hours work requirements?

Section 4.2 Noise

Are works compliant with the ICNIRP EMF limits, public enquiries referred to Environmental Services and workplace assessments for medical implants/pregnancy completed if required?

Section 4.3 EMF

Has suspected contaminated land been reported to Environmental Services and are workers aware of requirements for any known contaminated land?

Section 5.1 Contamination

Are ASS classified, managed, stored, treated and disposed in a manner to prevent environmental harm and corrosion?

Section 5.2 ASS

Are all wastes appropriately classified, handled, stored, transported and disposed and in compliance with licence and waste tracking requirements?

Section 5.3 Waste

Does the reuse of recovered materials (such as aggregates, mulch, spoil etc) comply with the relevant RRO/RRE?

Section 5.4 Recovered materials

Are controls in place to prevent the unauthorised harm to ecological sensitive areas including threatened species, mangroves and EEC and are vegetation impacts minimised, correct pruning methods used and the SRZ and TPZ controls implemented?

Section 6.1 Vegetation

Are controls in place to prevent the unauthorised harm to ecological sensitive areas including threatened species, hollow bearing trees, nests and bushrock?

Section 6.2 Wildlife

Are controls in place to prevent the spread of weeds and pathogens? Section 6.3 Biosecurity

Are controls in place during hot works to prevent the spread of fire and are hot works during a Total Fire Ban compliant with exemptions?

Section 6.4 Total fire bans

Are controls in place to prevent the unauthorised harm to Aboriginal heritage and are potential discoveries reported to Environmental Services?

Section 7.1 Aboriginal heritage

Are controls in place to prevent the unauthorised harm to non-Aboriginal heritage? Are works in archaeological areas and on Ausgrid’s state heritage building compliant with the relevant exemption and/or conservation management plan and are potential discoveries reported to Environmental Services?

Section 7.2 Non-Aboriginal heritage

Have resource reduction initiatives been considered (avoid, reduce, reuse, recycle)?

Section 8.1 Resource use

Is water use minimised and in accordance with the relevant water restrictions, water use exemptions, water saving rules and washbays used in accordance with the relevant trade waste agreement?

Section 8.2 Water use

Are all environmental incidents reported (including discovering contamination, unauthorised vegetation clearing, damage to Aboriginal and non-Aboriginal heritage and sediment, oil, fuel and chemical spills)?

Section 10 Incidents


82 Environmental incidents

10 Environmental incidentsFurther information is available in Ausgrid’s Environmental Index (employees only) and Environmental Handbook reference material.

Pollution incidents

– Any sediment runoff in a sensitive area, drain or waterway.

– Any volume of oil or chemical spilled in a sensitive area, drain or waterway.

– Any spill that contains hazardous materials such as PCB or mercury.

– Any leaks from underground infrastructure (eg tanks and cables).

– Any oil or chemical spill of 20L or greater in any location.

Other environmental incidents

– Land contamination.

– Unauthorised damage to heritage items.

– Unauthorised vegetation impact.

– Illegal waste disposal.

– Works without or in accordance with the project specific EIA, approval, licence or permit.

– Noise complaints that are likely to involve the regulator.

– Harming wildlife.

In the case of an incident, Ausgrid employees must contact Environmental Services immediately on 0412 070 574 (24 hours). Environmental Services will assist and report to the relevant authorities as required.

All workers must manage and report pollution incidents in accordance with the spill response procedure (refer to section 10.1 Spill response procedure).

Penalties apply if pollution incidents are not immediately reported. Fines for individuals are up to $500,000 and a further $120,000 for each day the offence goes unreported.

Definitions

Sensitive areas includes areas described in sections 5.4 Use of recovered materials, 6.1 Vegetation, 6.2 Wildlife, 7.1 Aboriginal Heritage and 7.2 Non-Aboriginal Heritage.

Waterway includes a creek, river, canal, kerb and gutter, stormwater drains, beach, lagoon, lake.



83Environmental incidents

10.1 Spill response procedure(a) Assess the site and use appropriate PPE. Refer to the SDS and contact the

local safety advisor for WHS requirements (refer to section 10 Emergency contact numbers).

(b) Prevent unauthorised access.

(c) Eliminate all ignition sources (eg engines and live electrical equipment).

(d) Assume oil from pre-1997 equipment is contaminated with PCBs unless known otherwise.

(e) Stop the flow from the source (eg closing valves, applying sealant to the leak, power down the hydraulic pressure).

(f) Stop the spill from entering drains, waterways, or ducts as follows:

– place barriers around the source (eg particulate, socks, pads, sand bags) – divert the spill into another container or an area where it can be

contained – place barriers (eg absorbent socks, pads or sand bags) around drains,

waterways, ducts etc – prevent the spill spreading on water by placing floating booms or

absorbent socks on the water.

(g) Act in accordance with relevant emergency plans and procedures.

(h) Ausgrid employees can contact Environmental Services on 0412 070 574 (24 hours).

(i) Get help if the spill cannot be contained, or if oil has escaped into drains, waterways or roadways by calling NSW Fire and Rescue on 000 or 112 (from mobiles).

(j) For spills from pre-1997 oil filled equipment, check for PCBs. Ausgrid employees can check the PCB register or arrange tests with Chemical Testing Laboratory on 02 9410 5117.

(k) For additional clean up material, Ausgrid employees can contact the nearest Ausgrid spill response trailer.

(l) For pollution incidents, Ausgrid employees must notify Environmental Services immediately on 0412 070 574 (24 hours).

(m) If Environmental Services can’t be reached, notify the EPA for spills that could cause harm or has the potential to cause harm to the environment on 131 555.

(n) Broom powder absorbent into the spill for final clean up.

(o) Remove oil from behind floating booms or barriers.

(p) Minimise the amount of waste created by preventing the spread of oil.

(q) Ausgrid employees should contact Aqueous Waste Services for removal of liquid waste on 9269 7517 or after hours on 8569 6712.

(r) Dispose of contaminated spoil, absorbent products and other materials in accordance with waste requirements (refer to section 4.3 Waste management).

(s) Maintain and replace on-site spill response controls until the environmental risk is removed.

(t) Restock spill kits. Ausgrid employees can refer to EG 100 Oil Handling guidelines for stockcodes.

Make safe

Get help

Report

Clean up

Maintain

Contain and

control







84 Emergency contact numbers

11 Emergency contact numbersA current list of contact numbers is available in Ausgrid’s Environmental Handbook reference material.

Environmental Services 0412 070 574 (24 hours)

Issue Contact Number

Emergency Services Nationwide

HAZMAT Response Unit – Sydney

HAZMAT Response Unit – Central Coast

HAZMAT Response Unit – Hunter

NSW Fire and Rescue (Notification of pollution incidents)

NSW Rural Fire Service (Bush Fire Information Line)

SES (State Emergency Services) – Floods and storms

000 | 112 (from a mobile)

02 9742 7320 (24 hours)

02 4389 2194 (24 hours)

02 4927 2535 (24 hours)

1300 729 579

1800 679 737

13 25 00

Environmental issues

General assistance

Environmental incidents

EMF enquiries

Noise complaints

Contaminated sites

Heritage discoveries

Ausgrid’s Environmental Services 0412 070 574 (24 hours)

Ausgrid Enquiries

Emergency

13 13 65

13 13 88

Safety On call Ausgrid Safety Advisor

SafeWork NSW

02 9585 5850 (24 hours)

13 10 50

Security Ausgrid’s Security Hotline 02 9269 2266

Building maintenance Ausgrid’s Property OneCall 1300 306 541

Media enquiries\requests Ausgrid’s Corporate Affairs 02 9269 4264 (24 hours)

Pollution incidents

Note: Ausgrid employees must contact Environmental Services in the first instance

1. EPA

2. SafeWork NSW

3. NSW Fire and Rescue

4. Public Health Unit (PHU)

5. Local council

131 555 (24 hours)

13 10 50

1300 729 579 (000 for emergencies)

1300 066 055

02 9242 4000

Ports authorities Port Authority of NSW 02 9296 4999 (24 hours)



85Emergency contact numbers

Issue Contact Number

Discovery of Aboriginal heritage itemsNote: Ausgrid employees must contact Environmental Services in the first instance

OEH

NPWS

131 555 | 02 9995 5555

1300 072 757 | 02 9995 6500

Discovery of Non-Aboriginal heritage itemsNote: Ausgrid employees must contact Environmental Services in the first instance

OEH

Heritage Council

131 555 | 02 9995 5555

9873 8500

Pumping water from pits, substations and sumps

Ausgrid’s Aqueous Waste Services 02 8569 6712 (24 hours)

Water and sewer mains Upper Hunter Shire CouncilMuswellbrook Shire CouncilSingleton CouncilHunter WaterCentral Coast Council (Wyong Water)Central Coast Council (Gosford)Sydney Water

6540 1199 (24 hours)6549 3700 (24 hours)6572 1400 (24 hours)1300 657 000 (24 hours)02 4350 5555 (24 hours) 02 4325 8222 (24 hours)13 20 90 (24 hours)

Agricultural production, biosecurity, natural resource management and emergency management

Local Land ServicesWater NSW

1300 795 2991800 061 069

Waste disposal Veolia (south of Hawkesbury) Remondis (north of Hawkesbury)

13 29 55 13 73 73 / 02 9032 7100

PCB testing Ausgrid’s Chemical Testing Laboratory

02 9410 5117

Local council issues Local council 02 9242 4000

Injured native wildlife WIRES (NSW Wildlife Information, Rescue & Education Service Inc.) – Sydney and Central Coast

Sydney Metropolitan Wildlife Service – Sydney

Wildlife Animal Rescue Care (ARC) – Gosford

Native Animal Trust Fund (NATF) – Lower Hunter

Wildlife Aid – Upper Hunter west of Singleton

1300 094 737 (24 hours)

02 9413 4300 (24 hours)

02 4325 0666

0418 628 483 (24 hours)

0429 850 089

Traffic incidents and road conditions reporting

RMS 131 700

Non-scheduled PCB oil disposal

Workshop Homebush Workshop Rutherford

02 9394 6687 02 4934 9136


86 Glossary

12 Glossary

Aboriginal heritage sensitive areas

include areas listed in section 7.1 Aboriginal heritage

ACM asbestos containing material which is any material or part of a thing that, as part of its design, contains asbestos. Products that contain asbestos are considered as being either friable or non-friable.

ADG Code Australian Code for the Transport of Dangerous Goods by Road and Rail

Agricultural land land used for broad acre cropping, pasture, horticulture, growing fruit and keeping livestock

AGVET Code Australian Agricultural and Veterinary Chemicals Code

AHD Australian height datumApprovals, licences or permits

Approvals, licences or permits may be required depending on the activity and location. Some examples include harming threatened species, discharging to sewer, working in a national park and storing Scheduled PCBs.

ARPANSA Australian Radiation Protection and Nuclear Safety Agency

Asbestos in soil includes soil contaminated with asbestos or inappropriately buried asbestos. This does not include AC conduit, joint boxes and troughing installed in accordance with Network Standards.

Asbestos Register identifies work locations where asbestos may be present and details what may be found at a location. The register is accessible via the Asbestos Gateway.

Asbestos removal work

work involving the removal of asbestos or ACM, including removal by independent LAR.

ASP accredited service providerASS acid sulfate soilsAssessor an authorised person who prepares the EIA for a proposalASSMP acid sulfate soil management plan prepared in accordance with the

NSW ASS Manual and ASS Assessment Guidelines

Biosecurity preventing and responding to pests and diseases that threaten the economy and environment

Blue Book NSW Managing Urban Stormwater – Soils and Construction (Volume 1)

CEMP construction environmental management planClear business day a day other than the weekend or a public holiday and does not include

the notification date or the date of works commencingDA Development ApplicationDangerous goods solids, liquids, or gases that can harm people, other living organisms,

property, or the environment, and include Scheduled PCBs in accordance with the ADG Code

Determination the decision on whether the proposal can proceed based on the assessment, evaluation and consultation phases

Domestic use criteria

for pesticide use to be considered domestic, it must meet the criteria in section 3.3 Pesticides







87Glossary

Ecological sensitive areas

includes native vegetation, bushland, national park estate, threatened species, endangered ecological community, critical habitat, wilderness area, biobank sites, biodiversity offsets, marine parks, coastal wetlands and littoral rainforests, seagrass, saltmarsh, mangroves or wetlands

EHC Act NSW Environmentally Hazardous Chemicals Act 1985

ESCP erosion and sediment control planEIA environmental impact assessmentEIS environmental impact statementEmergency works restoration activities required to protect public safety or the

environment due to a sudden natural event or an accidentEMF electric and magnetic fieldsEMS environmental management systemENM excavated natural material which is naturally occurring rock and soil

that has been excavated from the ground and contains at least 98% (by weight) natural materials

Environmental Handbook

NS174C Environmental Handbook for Construction and Maintenance (this Handbook)

Environmental policies

Ausgrid documents that provide the overarching values and behaviours expected of our workers

Environmentally sensitive area (for mulch)

include areas as defined in the mulch order (eg National Parks, Crown lands, critical habitat, coastal wetlands)

EP&A Act NSW Environmental Planning & Assessment Act 1979

EPA NSW Environment Protection Authority

EPL environmental protection licenceEWMS environmental work method statementExempt development certain activities as defined in SEPP (Infrastructure)Exposure limits conservatively set limits to prevent the occurrence of magneto-

phosphenes (flashes of light which occur above 10,000 µT)FM Act NSW Fisheries Management Act 1994

Friable asbestos material

any asbestos containing material in the form of a powder or that can be reduced to powder or can be crumbled, pulverised or reduced to powder by hand pressure when dry.

GHS Globally Harmonised System of Classification and Labelling of Chemicals

Green Rules five rules that aim to prevent and minimise environmental harm from Ausgrid's activities

HAC hazard assessment checklist

HAZMAT hazardous materials

High impact activities

include beeper style reversing alarms, saw cutting, vibratory rolling, grinding, rock breaking, jack hammering, bitumen milling or profiling, underboring/directional drilling and impact piling

High risk activities include activities listed in section 6.4 Total Fire Bans

Hot work includes grinding, welding, brazing, oxy-cutting, heat treatment or processes that generate heat or continuous streams of sparks

ICNIRP International Commission on Non-Ionising Radiation Protection











88 Glossary

Indicators of ASS include indicators listed in section 5.2 Acid sulfate soilsIndicators of contaminated land

include indicators listed in section 5.1 Contaminated land

ISSC3 Industry Guide for the Management of Vegetation in the Vicinity of Electricity Assets

Issue specific management plans

may be required by the EIA or due to the type of activity (eg ESCP, NVMP)

kg kilogramkV kilovoltL litreLAR Licenced Asbestos Removalistsm metremg milligrammm millimetreNon-Aboriginal heritage sensitive areas

include known non-Aboriginal heritage, archaeological areas, conservation areas or movable heritage assets

Non-destructive digging

includes hand digging, hydro vacuum excavation, air excavation or knifing or vacuum excavation

Non-friable asbestos material containing asbestos (other than friable asbestos), including material containing asbestos fibres reinforced with a bonding compound. Its condition can degrade and become friable over time or following an incident such as a fire.

Non-scheduled PCBs material or waste with a PCB concentration between 2ppm and 50ppmNPWS NSW National Parks and Wildlife ServiceNSW New South WalesNTU nephelometric turbidity unit, which is a measure of a liquid’s turbidity

(or cloudiness)NVMP noise and vibration management planOEH NSW Office of Environment and HeritageOut of hours work activities undertaken outside of standard operating hoursPCB polychlorinated biphenylsPCB free material and waste that has a PCB concentration ≤2 ppmPCB material and waste

includes oil, equipment, rags, oil absorbent products and soils which are contaminated with PCBs

Pesticides include herbicides, termiticides, insecticides, biocides , fungicides and baits

pH potential of hydrogen which is the measure of the acidity or alkalinity of a solution

PPE personal protective equipment

ppm parts per million or mg/kg

POEO Act NSW Protection of the Environment Operations Act 1997

RAP remediation action planReceptacles include drums, containers and tanks but does not include equipment

containing oilRecovered aggregates

include crushed concrete, brick, rock, asphalt and ceramics other than refractory bricks and materials




89Glossary

Recovered fines a soil or sand type material (particle size <9.5 mm) derived from the processing of mixed construction and demolition waste

REF review of environmental factorsRMP risk management protocolRRO resource recovery orders which apply to waste generatorsRRE resource recovery exemptions which apply to waste receivers

RMS NSW Roads and Maritime ServicesSCW scheduled chemical wasteSDS safety data sheetSensitive places include places listed in section 3.3 PesticidesSensitive receivers include residences, classrooms, hospitals, places of worship and

recreation areas. Commercial premises (such as temporary. accommodation, childcare centres, restaurants) at times may be considered sensitive

SEPP State Environmental Planning PolicySER summary environmental reportSF6 sulphur hexafluorideScheduled PCBs materials and waste that have a PCB concentration ≥50 ppmSOHI statement of heritage impactSpadeable material is generally capable of being moved by a spade at normal

temperaturesSRZ structural root zone, which is the area where the roots provide critical

structural stability for the treeStandard operating hours

Monday to Friday – 7 am to 6 pm Saturday – 8 am to 1 pm No work on Sundays or public holidays

TPZ tree protection zone, which is the area set aside for the protection of a tree’s roots and crown to maintain the tree’s long-term viability

UST underground storage tankµT microTesla, which is a unit of measurement of the strength of a

magnetic fieldVENM virgin excavated natural material, which is natural material that comes

from undisturbed areas that are not contaminatedVerifier an Authorised Ausgrid officer who makes the conditional

determination of the proposalWasteLocate EPA’s online system to monitor the transport and management of waste

tyres and asbestos waste within NSWWaterway includes a creek, river, canal, kerb and gutter, stormwater drains,

beach, lagoon, lakeWebGIS EL Ausgrid’s environmental geographic information systemWet-vac a vacuum cleaner that can be used to clean up wet or liquid spillsWHS work health and safetyWorkers as per the WHS legislation definitionWMP waste management planWTMP water treatment management plan



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