Recovery update

Sediment in Stony Creek May 2019.jpg

Published on 24 May 2019

Almost three quarters of the stockpiled contaminated material has been processed quickly and efficiently by the large machinery at the fire site. The remaining spoil is heavily contaminated and will take longer to process and treat, it’s anticipated that this will be complete by the end of next week.

The treated material is sampled before transporting it off site to ensure the sediment complies with EPA requirements. 

Topographical and aerial surveys around the fire site to understand where contamination is spread across the site have been completed. The results from these surveys are expected next week.

All booms and sediment control measures continue to be inspected twice a week.

EPA has approved the re-classification and removal of approximately 450 cubic metres of treated material, enabling disposal to a broader range of landfill site. Arrangements are being made to remove stockpiled material and classification-compliant material off site as soon as possible.

Melbourne Water continues to consult with traditional owner groups to provide input to the development of the draft rehabilitation plan. 

Water and sediment concentrations assessed from 16 April showed improved sediment quality for metals and hydrocarbons. EPA are waiting for final results from recent routine analysis from 1 and 17 May and sampling on 3 May following rainfalls.

EPA deployed canisters to measure volatile organic compounds (VOCs) at the fire site and at Stony Creek for a 24-hour period in response to a rain event from 11-12 May.

The sampling results indicate that the VOCs detected were at low levels, well below the health impact criteria. Although the levels measured in the air are low, there may be instances of odour. This is because these chemicals can be smelt at concentrations below the health impact criteria.

A burst water main at 400 Somerville Road on Thursday 16 May turned Stony Creek (downstream of Cala Street) a milky colour due to sediment pollution. EPA will investigate issuing a pollution abatement notice, this requires the duty holder to upgrade their fire services systems which caused the discharge.

EPA’s ongoing advice is:

  • Avoid contact with the water in Stony Creek
  • Don’t walk along the edge of Stony Creek
  • Don't let pets swim in the area or drink the water
  • As a precaution avoid eating fish from Stony Creek
  • Seek medical help if you feel unwell

 

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