Remediation works

Work to date

Since the site was shut down in 1985, there have been many environmental investigations, which are summarised in the Remediation Action Plan (RAP) of 30 June 2016.

The first stage of the remediation work has been to remediate material on site for which no additional investigation works are required. The Stage 1 works included the removal of above-ground infrastructure and limited soil remediation. These works did not require development consent. A RAP for Stage 1 was prepared and followed, and an Environmental Management Plan was prepared to manage any potential impacts on the local community or environment. The Stage 1 works were validated by environmental consultants and the validation report was provided to the EPA in November 2015.

Other recent work includes the completion of soil and groundwater sampling, the installation of a boundary groundwater control system – which includes regular groundwater sampling and sampling of surface water in Styx Creek, upgrades to security lighting, fence repairs and the removal of graffiti.

Jemena also installed a groundwater treatment plan but it is currently being decommissioned to make way for the next stage of remediation works.

Next Steps

The completion of the remediation works, Stage 2, requires a RAP agreed with the EPA and an Environmental Impact Statement (EIS) which will be exhibited for public submissions. The EIS will include a range of specialist studies to assess the environmental and social acceptability of proposed remediation work and it will also consider and address any community concerns.

The EIS will be assessed by the NSW Department of Planning and Environment (DP&E), with input from the EPA and other relevant agencies. This will need to be approved by the NSW Minister for Planning, along with the Development Application, before works can commence.

Project Timelines to Date

Date  Details
1913 - 1985 Clyde Street Gasworks are operated by the Newcastle Gas Company (AGL) from 1913 to 1985, producing ‘town gas’, which was used for heating, lighting and cooking.
June 1988 The site is first regulated as a contaminated site requiring remedial action, pursuant to a notice under Section 35 of the NSW Environmentally Hazardous Chemicals Act 1985 issued on 10 June 1988.
1998 - 2015 Various environmental assessments and investigations are conducted at the site since 1988.
February 2005 Innova Soil Technology trialed the use of direct thermal desorption on 500 tonnes of contaminated soil from the site. The trial involved excavation of contaminated soil, transportation of the contaminated soil to the Mayfield site where the Innova thermal desorption unit was located, screening, mixing and blending of the contaminated soils and treatment by direct thermal desorption.
September 2006

AGL lodges an application for Ministerial approval to carry out the proposed remediation of the site under Part 3A of the EP&A Act.

AGL also seeks the Director-General’s environmental assessment requirements (DGRs) to address in the Environmental Assessment (EA) of the proposed remediation works.

December 2006 Jemena acquires the site from AGL as part of a business transaction.
February 2007 DGRs to be addressed in the EA are issued to AGL, with an expiration date of 8 February 2009. Application is subsequently withdrawn.
June 2011 VeruTEK Technologies conducted out a laboratory scale oxidation trial to assess potential degradation of gasworks organic contaminants from the site. The trial found that the surfactant and activated oxidant can degrade the hydrocarbon and coal tar related chemical compounds at the site.
August 2011

The 1988 remediation order issued Section 35 Environmentally Hazardous Chemicals Act 1985 is revoked as the legislation is repealed.

EPA declare the site to be significantly contaminated land under the Contaminated Land Management Act 1997 (CLM Act) on 18 August 2011.

March 2012 Jemena submit Voluntary Management Proposal No. 1 for the site (VMP No.
1), to the EPA for approval.
August 2012

EPA approves VMP No. 1 for the site, pursuant to Section 17 of the CLM Act on 17 August 2012. The main objectives of VMP No. 1 were to:

• “Define the nature and extent of the impact of soil and groundwater contamination at the site.

• Define the nature and extent of the impact of groundwater contamination from the site to adjoin sites.

• Collection of information to enable a subsequent VMP No. 2 to be provided to the EPA which will assess contamination management options for the site (i.e. feasibility studies and the identification of pilot trials for suitable contamination management technologies to remediate the site, as required)."

December 2013 Jemena submit Voluntary Management Proposal No. 2 for the site (VMP No.
2), to the EPA for approval, after completing the investigative works required by VMP No. 1.
January 2014

EPA approves VMP No. 2 for the site, pursuant to Section 17 of the CLM Act on 20 January 2014. The main objectives of VMP No. 2 are:

• “To undertake targeted investigations and works to address the immediate environmental risks posed on Styx Creek by the site.

• To develop and then implement (subject to necessary approvals) an initial remedial action plan (RAP – Stage 1) with the intent to remediate material on the site that is known to be contaminated, has been assessed as required remediation, and for which no additional investigation works are required.

• In parallel with the works specified above, to undertake additional investigation and feasibility assessment work at the site to provide information required to produce a subsequent remediation action plan (RAP – Stage 2), which will address any remaining contamination at the site that is assessed as requiring remediation, where the nature and extent of that contamination is not fully understood, as at the date of this proposal.”

June 2014 Elgas LPG gas storage facility located in the southern portion of the site is removed.
August 2014 Jemena submit RAP – Stage 1 for approval by the site auditor and EPA for approval on 31 August 2014.
Sept 2014 EPA and site auditor approve RAP – Stage 1.
November 2014 Enviropacific Services undertake a solidification/stabilisation treatment trial for tar impacted material at the site. The main purpose of this assessment was to demonstrate that ex-situ solidification/ stabilisation technology can be applied to the site.
November 2014 On 6 November 2014, Jemena notify Newcastle City Council of the pending commencement of Stage 1 remediation works at the site in December 2014, as per RAP – Stage 1. The Stage 1 remediation works are limited to remediation works that fall within the definition of Category 2 remediation works as defined by the NSW State Environmental Planning Policy No 55 – Remediation of Land and therefore do not require development consent.
December 2014 On 10 December 2014, Newcastle City Council confirms that the Stage 1 remediation works can be carried out as Category 2 remediation works without development consent.
December 2014 Stage 1 remediation works commence 15 December 2014.
February 2015 Stage 1 remediation works temporarily suspended at site due to an internal operational review.
30 June 2015 Jemena lodge application to Minister for Planning & Environment for the project to be ‘called-in’ as a State Significant Development project.
August 2015

Jemena re-notify Newcastle City Council of the recommencement of the Stage 1 remediation works.

August 2015 Stage 1 remediation works recommence at the site.
October 2015

Minister for Planning declares the remediation project a ‘State Significan Development’ (SSD) under the Environmental Planning and Assessment Act.

December 2015 Stage 1 remediation works complete.
December 2015 Management Order (MO) issued by the EPA on 21 December 2015 imposing timeframes for site assessment activities and the main remediation works.
May 2016

Preliminary Environmental Assessment (PEA) submitted to the Department of Planning & Environment (DP&E).

June 2016 On 15 June 2016 the DP&E chaired a planning focus meeting with the relevant agencies, Jemena, and its consultants.
June 2016 Stage 2 RAP submitted to EPA on 30 June 2016.
September 2016 DP&E issues Secretary’s Environmental Assessment Requirements (SEARs).
October 2016

Jemena asks EPA and DP&E whether some work could be done ahead of the SSD approval.

December 2016 The DP&E confirms all work to be done as part of the SSD approval process.
February 2017 Jemena’s consultant JBS&G starts work on a revised Stage 2 RAP addressing the SEARs and especially the requirement to include future land use.
October 2017 Revised Stage 2 RAP submitted to EPA-accredited Site Auditor for review and endorsement.

Moving forward, the following timeline is expected:

Timing

Details
Late 2017 Revised Stage 2 RAP submitted to the EPA for approval.
Late 2017 to early 2018 Jemena continues writing the Environmental Impact Statement (EIS).
Early 2018 Contract awarded to Remediation Contractor.
Mid 2018 EIS completed and goes on public exhibition.
Mid 2018 Response to submissions to the EIS.
Mid to late 2018

Project likely referred by DP&E to the NSW Planning Assessment Commission (PAC).

Mid to late 2018 Project approved by the PAC.
Late 2018 Obtain post-approvals and prepare environmental management plans as required.
Late 2018 Stage 2 remediation works commence.
Early 2020 Stage 2 remediation works complete, validation report submitted to Site Auditor and EPA.

For more information about the Clyde Street Remediation Project or to lodge questions and feedback, please contact us on:

Phone: 1800 571 972
Email: clydestreet@jemena.com.au

To receive updates about the project please email your contact details to clydestreet@jemena.com.au