MCU14/0056 - Attachment G - Engineering Report & Stormwater Management Plan

                                                                                                             ENG
                                                 Engineering Report & Stormwater Management Plan
                                         Date:          16/06/2014     Document No.:     14012-ENG-01.Docx

                                          By:              AvT          Revision No.:              B


     Acid Sulphate Soils
The local council is listed in Table 4: Acid sulfate soils-affected local government areas in State
Planning Policy December 2013 and therefore this development application requires
compliance with the State Planning Policy December 2013 acid sulfate soils development
objectives.

Acid sulphate soil testing is typically conducted in areas with reduced levels of less than 5.0m
Australian Height Datum (AHD) as stated in State Planning Policy December 2013. This policy
also states that developments below 20.0m AHD that involve a Material Change of Use or
operational works are required to be assessed against the State Planning Policy December
2013 acid sulfate soils development objectives. As the lowest point on this site is an
approximate level of RL140.2, we believe the probability of acid sulphate soil being present is
low and therefore testing would not be necessary.

As shown by the Cooroy & Lake Macdonald Natural Hazard: Bushfire & Acid Sulfate Soils
Overlay (Map OM3.4), the site is not expected to have acid sulphate soils.

The requirements for Acid Sulphate Testing will be confirmed by a geotechnical engineer prior
to the detailed design stage of this proposed development.

    Land Disturbing Activities
Important causes/issues of erosion for this site would consist of the following:
   • Precipitation and consequent run-off
   • Stripping and removal of topsoil
   • Removal of fill
   • Other earthwork operations
   • Heavy vehicle use on site
   • Wind erosion

The proposed development is a short construction period which will be programmed so that
the shortest period of time elapses between ground cover removal and restoration.

      Erosion and Sediment Control Measures
Sediment control filter fabric will be securely placed around the perimeter of the construction
site. This will ensure sediment is trapped before being released into the catchment. Refer
Appendix D.

An ESC measure will be provided at any vehicular access points to the site. Construction and
maintenance details are given in Appendix D. A temporary construction entrance will be
provided from Myall Street for access during construction.

A filter sock sediment trap will be utilized on all downstream stormwater inlets. Refer
Appendix D for construction and maintenance details.


A PO Box 26, Carina Q 4152                                                                   5|P a g e
E [email protected]
W www.vtce.com.au