You have responded that treatment onsite is not possible to achieve the required standards in Clause 56.07-4
In exceptional circumstances where it is not possible to implement WSUD treatment on-site to fully achieve the BPEMG targets this needs to be fully justified. A full or partial offset payment to Melbourne Water can then be made depending on the level of treatment proposed.
The responsible council will determine if stormwater compliance can be achieved through the offsets program using a set of criteria. Councils and applicants can use the STORM tool to help determine the percentage of offset payable given the level of treatment proposed on site.
The process for Offsets is set out in the Offset Fact Sheet and Form A must be completed. Refer also to Melbourne Water's Land Development Manual for more information.