2017-01-19 Ordinary Meeting Minutes

ORDINARY MEETING MINUTES                                                  19 JANUARY 2017


            e.   A stormwater quality treatment system. The stormwater treatment must
                 generally be in accordance with the Stormwater Management Plan For
                 Highway Service Centre Cooroy, project number 161968 by Covey
                 Associates, dated October 2016 except where alteration to impervious area
                 and water quality treatment dimensions are necessary to achieve the
                 following objectives as predicted in MUSIC modelling in accordance with
                 the Water by Design MUSIC modelling guidelines.

                                 State      Planning Environmental        Approved Plan
                                 Policy              Protection    Water of Development
                                                     Policy Water Quality Water    Quality
                                                     Objectives           Criteria

                  Total          90%         reduction <6mg/L                90th%ile 15mg/L
                  Suspended      compared      to   an
                  Solids         unmitigated
                                 development

                  Total       60%         reduction Maximum 50ug/L           Maximum
                  Phosphorous compared      to   an                          0.03mg/L
                              unmitigated
                              development

                  Total Nitrogen 45%         reduction Maximum 500 ug/L      Maximum
                                 compared      to   an                       0.3mg/L
                                 unmitigated
                                 development

            f.   The development must include bins with educational signage material to
                 encourage patrons who purchase items that generate gross pollutants to
                 dispose of such items appropriately, and not where they may enter
                 stormwater systems.
            g.   Stormwater quality treatment devices must be routinely checked, serviced
                 and cleaned in accordance with the manufacturer’s recommendations or
                 Water by Design maintaining vegetated stormwater assets guidelines.
                 Records of all maintenance activities undertaken must be kept and made
                 available to Council upon request. Where replacement cartridges or other
                 necessary components for the system become unavailable, an alternative
                 system is required to be retrofitted into the development to achieve an
                 equivalent pollutant reduction outcome.
            h.   All primary stormwater quality treatment devices must be routinely
                 checked, serviced and cleaned in accordance with the manufacturer’s
                 recommendations. Records of all maintenance activities undertaken must
                 be kept for 5 years and made available to Council upon request.
            i.   The ongoing maintenance plan for the development must include the
                 operations and maintenance manual for the water quality device/s and
                 must include the full cost of maintaining the system. This maintenance plan
                 must be provided as part of the subsequent operational works
            j.   The development must not cause an increase in peak flow runoff in 1, 5,
                 50 or 100 ARI events. The subsequent application for operational works
                 must include calculations and designs to demonstrate how this condition is
                 achieved.




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