LATE RFI - SCG 33114 - CD Issue 3 07.03 (2)

Information Required
8.      Provide additional information demonstrating that the proposed development has been designed to
        protect receiving waters by means of ensuring stormwater runoff is treated to achieve maximum removal
        of nutrients. The additional information must be prepared by a suitably qualified person (RPEQ –
        Registered Professional Engineer of Queensland) and include, but not be limited to:

8.1.     demonstrate compliance with Performance Outcome PO6 of the Water Quality and Drainage Code; and

8.2.     demonstrate stormwater runoff is suitably treated to achieve a:
         •     60% reduction in total phosphorous; and
         •     45% reduction in total nitrogen.

9.       Clarify if a bioretention basin is to be constructed as part of the proposed development.

Response
The editors note on PO6 of Noosa Council’s Water Quality and Drainage Code notes “Areas identified on the
State Planning Policy (SPP) Interactive Mapping System”. The SPP Mapping System does not identify the site is
within a high ecological value waterway area and therefore stormwater quality treatment is not a requirement.

Following discussions with Council’s Engineer Mark Lewis, it was agreed that as per the State Planning Policy
Mapping, the site is not mapped in a high ecological value waters area. However even though the site is less than
the trigger value of 2500m2 as mentioned above, Council still require the stormwater quality targets mentioned in
item 8.2 of the information request.

We have revised our Stormwater Management Plan to include an onsite bio-retention basin to meet the
stormwater quality targets outlined in this information request.

If you require any further information, please do not hesitate to contact our office.

Yours faithfully




TOM HARRINGTON – RPEQ 27698
For and on behalf of
SCG CONSULTING ENGINEERS


Enc      SCG Drawings Numbers: 33114 – CS, OW1.1, OW2.1, OW3.1, OW4.1.B, OW4.2.B, OW4.3, OW5.1,
         SW1.1.B, SW1.2.A, SW1.3.A

         33114 SWMP.RevA




SCG Consulting Engineers                              Page 4 of 4                                    SCG Ref:33114(L1)