Sepia Depression Ocean Outlet Landline (SDOOL)
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The Sepia Depression Ocean Outlet Landline (SDOOL) is a 24km pipeline that is used for the disposal of treated wastewater from the Woodman Point and Point Peron wastewater treatment plants and effluent from the Kwinana Water Reclamation Plant and selected industries.
The SDOOL extends 4 km offshore from Point Peron into the Sepia Depression.
The SDOOL has conveyed treated wastewater from Woodman Point and Point Peron WWTP’s since 1984 however environmental approval to discharge effluents from selected industries has only recently been granted in October 2004 (Minister for the Environment - Statement 665).
CSBP, BP and Kwinana Cogeneration Plant are industries that have been approved to discharge their effluents into SDOOL. These industries currently dispose of their effluents into Cockburn Sound. The volume of industrial effluent going into Cockburn Sound will reduce by 6 megalitres a day when these industries begin to discharge their effluents to the SDOOL.
It is commonly thought that the Sepia Depression is better able to assimilate any effects of industrial effluents as the rate of dilution is much higher than that in Cockburn Sound. However, extensive environmental conditions have been placed on the approval to discharge industrial effluent into the Sepia Depression.
A Monitoring and Management Plan has been developed to ensure that both the ecological and social environmental values for marine waters in the vicinity of the Sepia Depression are maintained. This plan details the monitoring required to evaluate the environmental effects of discharging treated wastewater and industrial effluents into the Sepia Depression. It also describes the investigative or management responses that may be implemented in the event that guideline trigger levels or Environmental Quality Standards are exceeded.
Monitoring and Management Plan
For a working copy of the monitoring and management plan, please contact Wastewater Treatment (Operations) Branch on 9420 3736 or email craig.byers@watercorporation.com.au.
Stakeholder Liaison Group
A Stakeholder Liaison Group has been formed to assist the Water Corporation in managing concerns regarding the discharging of treated wastewater and industrial effluents to the Sepia Depression and to review its environmental performance.
Membership and Contact details
| Chairman: Mr Ron Kemp | ron@ikon.biz |
| Jeff Ibbott (Water Corporation) | jeffery.ibbott@watercorporation.com.au |
| Ivan Unkovich (Water Corporation) | ivan.unkovich@watercorporation.com.au |
| Craig Byers (Water Corporation) | craig.byers@watercorporation.com.au |
| Margaret Domurad (Water Corporation) | margaret.domurad@watercorporation.com.au |
| Chris Oughton (Kwinana Industries Council) | chris.oughton@cciwa.com |
| Cameron Schuster (Kwinana Users Group) | cameron.schuster@csbp.com.au |
| Richard Smith (City of Rockingham) | janrich@wn.com.au |
| Peter McKenzie (Town of Kwinana) | peter.mckenzie@kwinana.wa.gov.au |
| Kristin Priest (Department of Environment and Conservation) | kristin.priest@dec.wa.gov.au |
| Kane Moyle (Recfishwest) | kane@recfishwest.org.au |
| Brett Carter | Brett-Rotary@westnet.com.au |
| Nick Jones (City of Cockburn) | njones@cockburn.wa.gov.au |
| Tom Rose | tom.rose@dec.wa.gov.au |
| Vacant | Community Representative to be elected |
Minutes of meetings
Presentation at August 2006 Meeting
Presentation at February 2006 meeting
Presentation at August 2005 meeting
Annual Reporting
The Water Corporation is required to submit an annual report and an annual compliance report to the Department of Environment and Conservation. For a copy of these reports, please telephone 9420 3736 or email craig.byers@watercorporation.com.au.