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PRINCIPAL 12 Maple Street (PO Box 639) Cooroy Q 4563 ABN 59 847 644 252 Max L. Watterson PH 07 5442 6121 Cadastral Surveyor (Qld) FAX 07 5442 5125 = | MAX WATTERSON+ASSOCIATES CONSULTING SURVEYORS & PLANNERS 8'" February 2021 Ref: 20/5179 Your Ref: RAL20/0021 The Chief Executive Officer Noosa Shire Council PO Box 141 TEWANTIN QLD 4565 Attention: Glen Conforti Dear Sir, Re: Development Application for Reconfiguration of a Lot — 1 Lot into 18 Lots Lot 3 on RP113733 2 Pearsons Road, Cooroy Applicant: Vantralia Pty Ltd | refer to the above-mentioned matter and your letter of Further Advice dated 18" December 2020 and | respectfully supply the following information: Issue 1 Infrastructure in Riparian Buffer The proposed stormwater treatment system of the development includes the Bioretention Basin located within the Park, three bio pods in the road reserve and three tree pits in the road reserve. The proposed Bioretention Basin has been re-located to minimize impact upon the mapped riparian buffer area and MSES Category R vegetation. Please find an amended Master Plan of the development prepared by Callaghan & Toth showing the new location of the water quality device, the outlet and footpath. The new location of the Bioretention Basin is adjacent and 2 metres off the north- eastern boundary of Lot 17. Issue 2 Bioretention Outlet The aforesaid Master Plan also shows details of the piping of the outlet of the lowflow from the basin. The piping is proposed to end short of the creek within the riparian buffer area and in a low existing swale along the northern boundary. Issue 3 Maintenance of the eco aid system The eco aid underground detention system has been replaced by the above- described detention basin and the inclusion of an enlarged stormwater pipe to increase detention. B.Surv(UNSW). M.S.S.S.1 EMAIL [email protected]
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Please also find attached an amended Integrated Water Management Plan - Revision 2 prepared by Callaghan & Toth, which provides details of the proposed stormwater system and an assessment of the attenuation of the increase in pollutant loads. Issue 4 Flood Please find attached an amended Flood Assessment Report — Revision 2 prepared Callaghan & Toth, which has been updated to reflect the altered detention basin and provides clarification that the one-year ARI ids limited to the pre-development peak. Issue 5 Fill to Lots 15, 16 & 17 The levels of filling along the rear of Lots 15, 16 and 17 has been reduced to 0.5m as shown the Master Plan prepared by Callaghan & Toth. Please note that this submission completes our response to your Information Request. | thank you for your consideration in this matter. Yours faithfully MN Max Watterson