Response to Info Request - Planning Response MCU18-0015 & RAL18-0001 · MCU18/0015

   Item 2 – Provide an accurate slope analysis plan of the site.
   Item 3 – Provide information on the subsurface conditions down-slope of the units and towards the
   creek to adequately assess the stability of the site. Provide an assessment of the subsurface
   conditions by an experienced geotechnical engineer with relation to the stability of the site.


   Response – Included at Attachment 5 to this response is an updated Geotechnical Assessment
   prepared by Core Consultants which provides a comprehensive updated assessment of the items
   identified above.


   Overview of Approach to Slope Stability
   Item 4 – Provide information on how the water quality of the creek will be monitored and
   maintained during construction and the proposed use of the site. Demonstrate no worsening of
   water quality and quantity will be achieved through the management of the site.
   Item 5 – Provide information regarding the stabilisation of the site, both during construction and
   the proposed use of the site.


   Response – Our geotechnical consultant has reviewed these information request items and
   determined that they are predominantly civil engineering matters and therefore have been dealt
   with in the Engineering Report at Attachment 4, however Section 7 of the Geotechnical
   Assessment provides slope stability recommendations that should be taken into account during
   site preparation and in the ongoing design.


   Item 6 – Provide the following additional information:
   i. Advice is required on the locations to which the footing design recommendations apply. Do these
   recommendations apply to all footings or only those footings within 20m of the creek?
   ii. The method to be adopted in estimating the lateral loads on the piles should be confirmed. There
   are several approaches available for this design.
   iii. The geotechnical design parameters to be adopted in the design should be confirmed. There is
   an inconsistency between the parameters quoted in Table 1 and Table 5 of the Golder Associates
   Report.


   Response – The Geotechnical Assessment included at Attachment 5 clarifies that the footing
   recommendations apply to all footings across the site. Section 6.3 of the report provides
   confirmation of lateral load calculations as well as clarification of geotechnical design parameters.


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