18164 - SBSMP - Rev 0

                                                                                          18164 - SBSMP/0
                                                                                                     Page 10




Potential sources of contaminants identified for the construction phase of the development are
outlined in Table 6.2 together with proposed stormwater quality improvement devices,
management and maintenance procedures.

                   Table 6.2 - Potential Contaminants and Proposed Treatments

                                                   Management /               Proposed Treatment Device
      Pollutant        Potential Source
                                               Maintenance Procedures         and Maintenance Procedure
     Sediment &           Excavated           Provision of sediment and         Sand filled filter socks.
       Eroded            material, fill        silt barriers to the site      Removal of excess sand/silt
      material        material, exposed        drainage entry and exit            build-up at regular
                      ground, stockpiles                points.                intervals and after every
                         of material.                                                    storm.
        Dust            Stockpiles of          Covering the material or       Coverage of material with
                      material, exposed       wetting it down at regular      plastic, geotextile, surface
                          ground.                     intervals.               binding agents or regular
                                                                                        watering.
        Litter         Refuse generated         Construction waste is to         Industrial bin is to be
                           by staff.             be cleaned off the site          provided within the
                                               area and disposed of into       construction area - to be
                                                  an industrial bin then         emptied on at least a
                                                  removed by a refuse                weekly basis.
                                                 collection contractor.
      Concrete            Washing of           Provision of a closed area     Liquids to be removed by a
                           concrete            onsite for washing off of           waste collection
                        trucks/tools to            concrete slurries.           contractor. Solids to be
                            remove                                             placed into a refuse bin.
                          wet/unused
                           concrete.
     Surfactants        Washing down            No cleaning of vehicles         Monitoring & prevention
    (detergents)         operations on         will be permitted on site.
                        hardstand area
                       using detergents.
      Chemical         Typically this may       Where spills occur, the        A temporary containment
       (Paints,           occur due to          containment area is to             area. This is to be
      thinners        spillage of product.    stop escape. The material       impermeable and of a size
         etc.)                                    is to be treated (as        to permit mixing/transfer,
                                                required) and removed         and with a storage volume
                                              and cleaned by a licensed           of twice the largest
                                                       contractor.                  container used.
                                              Minor spillage outside this       Treatment of spills is to
                                               area shall be cleaned up       occur on site. No discharge
                                               with cloths and disposed         of treated water to the
                                                  of to waste via the           stormwater system is to
                                                     industrial bin.             occur without council
                                                                               approval. Incidents are to
                                                                                be reported to the EPA.
    Wastewater        Spillage from the       A licensed contractor shall          No leakage is to be
                      relocation of the           remove any residue             permitted to enter the
                      existing sewerage       sewage from unused pipes          groundwater or discharge
                        reticulation.         and contaminated soils are       to the stormwater system.
                                               to be disposed of via the
                                                     industrial bin.




Site Based Stormwater Management Plan
Reconfiguration of a Lot and Mixed Use Development at 215 David Low Way, Peregian Beach