C2. Eng Report

                                                     Proposed Service Station – 175 Eumundi Noosa Road, Noosaville
                                                                                  Ref: 20769 C R001 Rev 06 09.02.17
                                                                                                     February 2018


         EXECUTIVE SUMMARY
         ADG Engineers (Aust.) Pty Ltd was engaged by NKS Corporation Pty Ltd to prepare a Civil
         Engineering Report suitable for submission to Noosa Shire Council for a site located at 175 Eumundi
         Noosa Road, Noosaville. The proposed development is comprised of a service station and retail
         centre.

         The purpose of this Civil Engineering Report is to provide advice on the proposed development with
         regard to earthworks, roadworks, stormwater drainage, sewerage and water supply, electricity,
         communications, gas, stormwater quality and quantity measures, and flooding.

         To understand with greater certainty the requirements from Unitywater (UW) for this development, a
         Service Advice Notice Request has been prepared and lodged with UW with an expected issue date
         November 2017.

         The stormwater quantity objective was to demonstrate that there is no increase in peak discharges
         from the subject site. This considered storm events up to and including the Q100 storm event. The
         purpose is to ensure that the existing infrastructure and/or downstream properties are not adversely
         affected. For the stormwater quantity assessment, ADG has determined that the increase to
         impervious area is negligible due to the existing site development and as well as the increase to
         discharged peak flow rates. As such, no on-site detention measures will be required for this
         development.

         The quality assessment includes a summary of the Water Sensitive Urban Design features included
         in the design. Due to the greater probability of oil and petroleum spillage within the site special
         precautions will be taken to ensure integrity of the surrounding environment and downstream
         stormwater catchment. The site has been divided into two (2) catchments, a high-risk area and a
         low-risk area. A Gross Pollutant Trap (GPT) (SPEL Ecoceptor or approved equivalent) will be
         installed prior to the site’s discharge to remove oils and grits commonly encountered on surfaces
         trafficked by motor vehicles.

         A SPEL Puraceptor unit or approved equivalent is proposed to treat runoff from the high-risk area
         before returning filtered run-off to the low risk drainage system for further treatment. This unit will
         have an oil/petroleum storage volume of minimum fuel tanker compartment size to be clarified by the
         fuel supplier.

         The site appears to be adequately serviced by reticulated water, sewerage, stormwater
         infrastructure, telecommunications and electricity. These services will need to be connected during
         development. Information discussed in this report is inferred from DBYD records and information
         gathered via site investigation.

         All relevant standards and guidelines are addressed in this report including criteria from:

            NSC Planning Scheme Policies

            State Planning Policy (SPP) 2017

            Queensland Urban Drainage Manual (QUDM) 2013

            Plumbing and Drainage Code AS3500.3

            Australian Rainfall and Runoff Guideline (ARR)




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