HRP17305.L01.001 Irr

                                                                                                   Stormwater Management Plan
                                                                                                         Noosa Civic Car Wash




4             Stormwater management

Table 4-1 summarises the stormwater management requirements based on a review of current literature (refer
Section 2). This section also compares the current QIC Noosa Civic Pty Ltd design to the stormwater
management requirements based on the drawings that have already been developed for the site. Overall, the
car wash design has already taken into consideration many of the management requirements.
Table 4-1         Stormwater management

    Stormwater        management       Design description                      Design        drawing     Status of current
    requirement                                                                reference                 design

    1.    Car washing spaces              Bunding located on the high         Grated drain and bund     1.   Design
          O291                             side and entry/exit prevents        diversion design shown         consistent with
                                           wash water from combining           in:                            current design
         – Car washing spaces are          with stormwater
            designed and managed                                                Design        drawing        practises
            so that grease and other      The wash water is collected             A200 Rev 2 (Dec,
            substances           are       and treated within, refer to the        2016)
            prevented from entering        Hydraulic Services Plan for          Hydraulic Services
            the stormwater system          details                                 drawing 01 and 02
                                           – Grated drain on the low side          Stage BA Rev A
                                               of the washing area collects        (Dec, 2017)
                                               washing       water     and
                                               prevents     wash      water
                                               discharging from site extent

    2.   Washing area must                Car wash area is to be entirely     Roof design shown in      2.   Design
         either be covered                 roofed                              design drawing A500            consistent with
         (roofed), exclude                                                     Rev 2 (Dec, 2016)              current design
         stormwater or be                                                                                     practises
         equipped with a
         stormwater diversion
         system

    3.    Bunding in the form of          Stormwater       runoff     from    Bund diversion shown      3.    Bund
          ramp at the entry and            surrounding carpark areas is        in design drawing A200          dimensions not
          exit points to divert            mitigated from entering the site    Rev 2 (Dec, 2016)               shown on the
          surface stormwater               by a continuous kerb (bunding)                                      design
          runoff away from the             and planter on the “high” side of                                   drawings
          pad                              the washing area
                                                                                                              – Raised
         – Raised perimeter bund          Wash area design includes                                             perimeter
            at least 75-100mm              bunding at the entry and exits,                                       bund shall be
                                           which prevents stormwater                                             at least 75-
                                           runoff from adjacent areas                                            100mm
                                           entering the washing area

    4.   The washing area pad             Existing bitumen paving to          Washing area material     4.   Design
         must be made from an              remain                              described in design            consistent with
         impervious material                                                   drawing A200 Rev 2             current design
         such as concrete                                                      (Dec, 2016)                    practises




1
    The Noosa Plan (Noosa Shire Council, 2017)

HRP17305 | 27 February 2018 | Commercial in Confidence                                                                           6