Appendix F - engineering report

                                                                                                   CALIBRE CONSULTING




 Specific Outcomes                       Probable Solutions                      Proposed Measures
                                         (if code assessable)
 within the developed areas of the
 site, clear of drainage lines and
 Open Space precincts.

 Run-off Treatment

 O6                                      S6.1
 Run-off that leaves the site is         No solution provided.                   Refer to the Concept Stormwater
 treated so as not to adversely                                                  Quality Management Report No.
 impact on the ecology and                                                       B14158.W -01A undertaken by Calibre
 hydrology      of    downstream                                                 Consulting dated December 2014.
 environmental flows;                                                            Bioretention Basins, Constructed
                                                                                 Wetlands and Water Quality Control
 AND
                                                                                 Ponds have been incorporated into the
                                                                                 treatment train.
 O7                                      S7.1
 Within the Shire Business Centre as     No solution provided.                   N/A
 shown on Map SBC –
 (a) run-off treatment occurs within
      the site; and
 (b) drainage lines are only used
      for final polishing of run-off.
 Town Water Supply Connections

 O8 Backflow devices or similar          S8.1 A suitable backflow prevention     Suitable backflow prevention devices
 systems ensure water reuse              device is installed to protect the      will be installed in appropriate
 facilities have no impact on the        potable water within the reticulation   locations of the potable water supply.
 quality of the town mains water.        water supply in accordance with
                                         AS/NZS 3500:2003 Plumbing and
                                         Drainage.
 Use of Natural Treatments and
 Systems
 O9 Natural treatment strategies,        No solution provided                    We refer you to Brown Consulting
 including grass swales and bio-                                                 report dated October 2007. We note
 retention      systems,    vegetated                                            that bioretention swales, GPT and
 filtration strips and gross pollutant                                           control ponds will be used to treat run-
 traps are used where practicable;                                               off.
 AND
 O10 Within the Shire Business           No solution provided.                   Not Applicable
 Centre as shown on Map SBC,
 where necessary, drainage lines are
 ecologically enhanced to ensure
 that the water quality polishing
 functions are of high standard.

Table 7-7: Division 20: Water Supply and Sewerage Reticulation Code

Table 14-59 Water Supply

 Specific Outcomes                       Probable Solutions                      Proposed Measures
                                         (if code assessable)
 14.1164 Design and Construction
 (Water)




B14158.W | COOROY RETIREMENT COMMUNITY | PALM LAKE RESORTS                                 CIVIL ENGINEERING REPORT | 24