Since our last update in April 2017 the City of Kalamunda has been actioning the recommendations of the Department of Water and Environmental Regulation (DWER) that followed the Preliminary Site Investigation at Ledger Rd. To recap, these recommendations included:
- developing an asbestos management plan
- investigating the onsite storm water management
- introducing biannual monitoring of the dam water (noting the water has tested okay and is indicative of a dam supplied by a nature reserve)
- undertaking judgemental test pits and associated soil sampling of the main landfill area in the reserve, to determine the composition of waste material.
A body of work related to these recommendations was completed in August 2017, with:
- 2kg of asbestos cement material (ACM) collected in the last emu pick
- samples found confirming the site is contaminated with bonded asbestos in the form ACM
- no friable asbestos fibres identified.
The City of Kalamunda has developed an asbestos management plan (AMP) which the department will review and provide feedback on in the coming months.
Further works due to start in October 2017 will include:
- permanent warning signs being placed at all entrances
- permanent warning signs being placed near all critical revegetation zones
- a laterite fill to a depth 500mm being placed over the main landfill area
- mulching and revegetation works along the edges of high priority pathways.
At this point in time the DWER usage of site classification - remediated for restricted use will remain in place.
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