2017-01-16 General Committee Meeting Notes

RECOMMENDATIONS ONLY – NOT THE FINAL DECISION OF COUNCIL
GENERAL COMMITTEE MEETING                                                    16 JANUARY 2017


        58.   Signage indicating the rate of flow must be provided for drainage inlets in the
              FDA. Examples include 'Flows to blind sump', or 'Flows to containment facility'.
              Signage is to be painted or otherwise indicated around the drain inlets.
        59.   Where fuel deliveries are intended within the FDA, the standing area must be
              clearly demarcated and graded to the FDA containment vessel as per drawing
              B16239-CSK01.
        60.   A liquid-tight dispenser sump must be installed under each dispensing unit. It is
              to be designed to house all pipework joins and fittings and to collect and contain
              any leak from contaminating the surrounding soil/groundwater.
              Uncovered Forecourt Area (UFA)
        61.   All ground surfaces of UFA liable to contamination from vehicular activities must
              be constructed of impermeable materials, free of gaps or cracks. Suitable
              materials include asphalt, waterproofed, reinforced concrete or an approved
              equivalent.
        62.   Signage indicating the rate of flow must be provided for drainage inlets in the
              UFA. Examples may include 'flows to stormwater treatment system' or 'flows to
              creek'. Signage is to be painted or otherwise indicated around the drain inlets.
        63.   Road tanker delivery stands located within the UFA must be clearly demarcated
              and sited away from buildings, traffic areas, dispensing areas and emergency
              escape routes. The road tanker delivery stand is to be normally drained to the
              UFA stormwater quality improvement device (SQUID), however, diversion valves
              are to be engaged during fuel delivery operations to divert drainage to the FDA
              containment system (blind sump).
              Stormwater Quality Improvement Device (SQUID)
        64.   All stormwater from UFAs must be captured and drained to the approved SQUID.
        65.   The SQUID (treatment tank/ Stormwater 360 pods filter cartridges & detention
              tank) intended to be installed as part of the stormwater drainage system for the
              UFA, must incorporate the following design measures as a minimum:
              a.   steel bars or trash gates with at least 20mm spacing;
              b.   filtration devices such as sand filters or gross pollutant traps capable of
                   removing litter (diameter greater than 5mm) and at least 70% of fine
                   sediments (>125µm).
              c.   a wastewater treatment device, such as an oil and hydrocarbon separator,
                   triple interceptor or equivalent, capable of removing droplets larger than
                   60µm (i.e. corresponding to outlet discharge of approximately 15mg/L) and
                   to a point where there is no visible sheen or odour on stormwater. This
                   device is to be able to meet these requirements during a storm up to the 2
                   year ARI-6 minute design rainfall event without surcharging or backing up
                   the drainage system.
              d.   flow cut-off valves are to be installed at the outlet from the separator to use
                   in case of an emergency or cleaning operations.
              e.   be maintained in accordance with the manufacturers recommendations.




                                                                                  Page 39 of 52