15/03/2013

Kendall Bay Sediment Remediation ProjectResident Stakeholder Briefings: 3 & 4 December 2012

Project ManagersEnvironmental Consultants Community Liaison

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Purpose of Presentation

• Why are we here today:

� Jemena wants to talk to the local community about the proposed remediation works in Kendall Bay

� Outline why Jemena is remediating sediments in Kendall Bay� To update you on progress and explain what is happening noting

that no decisions have been made� To listen to your concerns and obtain your feedback

PROJECT BACKGROUNDTyrone Singleton, Jemena

Project Background The Project

Environmental Assessment Process

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Who is Jemena?

• Jemena is an Australian infrastructure company that builds, owns and maintains a combination of major electricity, gas and water assets.

• Part of the Singapore Power Group, Jemena was formed following the acquisition of assets and businesses from Alinta Ltd, including the former AGL Group’s gas infrastructure business.

• Operates in NSW, Victoria, Qld and ACT.

Jemena in NSW

• Jemena owns and manages gas transmission and distribution pipelines in NSW.

• These gas pipelines enable the transfer of natural gas directly to over one million NSW households and businesses.

• The Rosehill Recycled Water Scheme (recycled water distribution) is a network built, part owned and operated by Jemena. A 20km network that transports recycled water to the industrial centres of Smithfield and Rosehill/ Camellia.

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Project Background

• Kendall Bay was historically used for loading and unloading coal and other materials associated with the former AGL Mortlake gasworks.

• Mortlake gasworks was successfully rehabilitated in 2002, and is now part of the Breakfast Point residential development.

• Investigations carried out, in the bay, by AGL between 2001 and 2004 established areas of the Bay are contaminated.

• This resulted in AGL entering into a voluntary remediation agreement (VRA) with the NSW Environment Protection Authority (EPA) in September 2005.

• The VRA committed AGL to further investigate the sediments and then remediate areas identified as requiring remediation. Jemena inherited AGL’s VRA obligations in late 2006, when the AGL Group was split up.

Project Application - Remediation

• The remediation works proposed for Kendall Bay require approval (project application) form the Department of Planning and Infrastructure.

• The project application includes a detailed environmental assessment report, including a range of specialist reports.

• The project application and supporting documentation once submitted are publicly exhibited for 30 days and referred to state agencies for comment.

• Separately Jemena are seeking consent from Canada Bay Council for the temporary use of Cabarita Park as part of the remediation works for access and a site compound.

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THE PROJECTChris Graham-White, APP

Project Background The Project

Environmental Assessment Process

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Key Remediation Objectives

• Remediate contaminated sediments identified representing an unacceptable risk to recreational users and marine organisms in the Declared Area.

• Remove NSW EPA’s Remediation Order and Declaration of Remediation Site.

• Protect human health and the environment during remediation.

• Reinstate existing seabed in remediated areas.

• Allow marine life to re-colonise remediated areas.

• Be significantly robust to negate the need for long-term monitoring after remediation.

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Remediation Approach

Capping Strategy

•Remove top layer of sediments

•Install a low permeability barrier

•Restore seabed to original level with clean fill

•Treat removed sediment to comply with EPA waste disposal guidelines

•Disposal to licenced landfill

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Key Methodology Considerations

• Odour management

• Proximity to residents and Park

• Site access

• Noise management

• Protecting river water quality

• Shallow depth of Bay

- Barge/boat limitations

- Tidal influences

• Soft sediments

Access to the Works

• Jemena has looked at all available access options for the project

• The only feasible option is through Cabarita Park

• Access through Breakfast Point Development is not possible

• A property search did not identify a suitably zoned water front site available for accessing the works

• Jemena is prepared to evaluate viable alternative sites for the works if they arise

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Remediation Areas

Area A Finger

Area A

Proposed Cofferdam Location

Area B

Remediation Area A

Remediation Area B

Remediation Approach

Area A•Cofferdam and drain •Insitu treatment - cement•Excavate and dispose•Install clean cap

Area B and Area A Finger •Mechanically dredge•Transfer to Area A for treatment•Install clean cap

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Remediation Action Plan

• A Remediation Action Plan (RAP) is being prepared to document the remediation strategy to safety eliminate unacceptable risk to human health and the environment and help restore Kendall Bay.

• Developing the draft RAP to date has included:

o Review and assess available information

o Assess alternative remediation strategies

• The following is required to finalise the draft RAP:

o Confirm and develop the preferred remediation strategy

o Develop work procedures

ENVIRONMENTAL ASSESSMENT PROCESSAdam Coburn, ERM

Project Background The Project

Environmental Assessment Process

ERM’s Role

1. Prepare Environmental Assessment (EA) to support Project Application to Department of Planning & Infrastructure

2. Coordinate Specialist Reports to accompany EA

3. Planning Proposal (temporary use of public land)

4. Assist Jemena with community and stakeholder consultation

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What is involved in the Environmental Assessment (EA)?• Preparation of a range of specialist reports, including;

• Odour and Dust Report

• Noise and Vibration Report

• Traffic Report• Social Impact Assessment

• Human Health Risk Report

• Hazard and Risk Assessment• Ecology Report

• Heritage Report

• Visual Assessment.

• Preparation of a comprehensive EA Report, in accordance with legislative requirements

• Final Submission of EA to Department of Planning & Infrastructure

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Key Issues for Consideration

Odour Management

Area A

•Primary - Maintain water cover Secondary - Cover with odour suppressant foams

•During treatment (point sources) - equipment shrouds with odour extraction devices and/or sprays

Area B and Area A Finger

•Maintain water cover

•Use bins with lids

•Oil adsorbent booms

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Key Issues for Consideration

Noise and Vibration•A range of machinery within the Bay and activities within Site Compound to be considered and addressing appropriate mitigation measures•Vibration report to address impacts of sheet pile wall construction within the BayEcology•Mangroves within Kendall Bay•Possible removal of 12-14 trees with replacement planting and tree & existing tree protection •Flora/Fauna communities to be considered within Cabarita Park

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Key Issues for Consideration

Traffic•Traffic report to address haulage route for truck movements along Cabarita Road and through to Parramatta Road•Estimated to be 14 truck movements per day

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Key Issues for Consideration

Water Quality•Construct sheet-pile cofferdam around Zone A•Install primary and secondary silt curtains•Construct Water Treatment Plant•Construct stormwater diversion

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Environmental Assessment Process to Date

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Key Environmental Assessment Milestone Status / Approximate Timeframe

Prepare Preliminary Environmental Assessment Report October 2008

Director General Requirements August 2011

Prepared Remediation Options Assessment October 2012

Prepare Environmental Assessment for Part 3a Application Presently occurring

Community and State agency consultation Presently occurring

Submission of Part 3a Application Expected March 2013

Public exhibition of Part 3a Project Application by Department of Planning & Infrastructure

Expected April 2013

Planning Proposal

• A Planning Proposal has been submitted to Canada Bay Council seeking temporary use of a portion of Cabarita Park (see opposite) as part of the remediation works in Kendall Bay.

• The planning proposal will be subject to the approval of Canada Bay Council and will be separately exhibited by the Council early in 2013.

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Proposed area for access

Proposed site compound

Project Stages

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ENVIRONMENTAL INVESTIGATIONS

CONSTRUCT

DESIGN

ENVIRONMENTAL INVESTIGATIONS

ENVIRONMENTALASSESSMENT

PROCESS

REMEDIATIONWORKS

COMMUNITY CONSULTATION

COMMUNITY LIAISON

Anticipated Program for Remediation

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Key Project Milestone Status / Approximate Timeframe

Pre-remediation activities (assessments, investigations, approvals and commercial arrangements)

Ongoing

Lodgement of Environmental assessment documentation with NSW Department of Planning and Infrastructure

Quarter 1 (2013)

Minister for Planning and Infrastructure – Project approval decision anticipated

Quarter 2 (2013)

Establishment of work area and preliminary work Quarter 3 – 4 (2013)

Remediation works Quarter 1 – 3 (2014)

Decommissioning and rehabilitation Quarter 3 - 4 (2014)

Project works complete Quarter 1 (2015)

Summary

• Question and Answer Session• Overview of consultation to Date• Opportunities for other input into consultation process

• Community Information Session - Saturday 8 December 2012

• For Further Information:- Website: jemena.com.au/kendallbay- Phone no. 1800 266 901- Email address: kendallbay@jemena.com.au

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