MCU14/0056 - Attachment G - Engineering Report & Stormwater Management Plan

                                                                                                        Stormwater discharge quality is < 1.86 mg/l hydrocarbon
   MAINTENANCE                                                                                          content exceeding the Environmental Protection Agency
   • Designed for high performance and low maintenance over a long life span
                                                                                                        (E.P.A.) requirements of 10mg/l hydrocarbon content.
   • Visible oils (TPH) are skimmed from the surface of the water level
   • Easy and safe to access and clean, with access shafts positioned on                                Test sampling access: Field test discharged samples are
     all chambers.                                                                                      taken from sampling point and analysed by NATA
   • No entering of the unit is required                                                                accredited laboratories.
   • Not mandatory for the unit to be cleaned every 3 months.
   • Only oils, sediment and gross pollutants need to be removed.
     All stormwater does not require removal.
   • The cylindrical design ensures sediment collects easily on the floor                               The probe is freely suspended in the probe protection tube
     of the chambers effecting easy, quick removal. There are no square                                 in the separator at the correct level. When the oil-layer or
     corners or unreachable cavities and recesses.                                                      depth of hydrocarbons reaches the predetermined level, the
   • Waste is removed by a vacuum loading truck. (Suction truck)                                        top of the probe will be immersed in the oil, breaking the
                                                                                                        circuit and activating the alarm. It is intrinsically `fail-safe`
                                                                                                        system providing complete assurance that is operative. If a
                                                                                                        fault occurs it will be signaled immediately.




SPEL® PURACEPTOR tanks contain an immersed inlet                                                        The AUTOMATIC CLOSURE DEVICE (A.C.D.) is a precisely
dip pipe to extinguish flames and prevent inflammable                                                   engineered device comprising a water-buoyant ball
vapours form passing through to the drainage system.                                                    that is sensitive to any change in the water density as a
Complies with Section 6.3.4 of BS EN 858.1.2006.                                                        consequence of light liquids build up, thereby automatically
SPEL PURACEPTOR can withstand temperatures of up                                                        activating a process of depressing the A.C.D. to SHUT OFF
to 140ºC.                                                                                               the separator, preventing pollutants from discharging to
                                                                                                        drains and waterways.




                                                                                                                                        Secondary
                                                                                                                                        Separation
                                                                                                                                         Chamber
                                        Oil Retention Chamber




                                                                                                        SPEL PURACEPTOR Class 1 separators
                                                                                                        incorporate coalescer units. They
                                           SPEL ® PURACEPTOR units are glass reinforced plastic         consist of a quality stainless steel
                                           vessels made by the technical advanced chop hoop filament    mesh container with an adjustable
                                           winding process (patented) producing circumferential and     handle and high volume reticulated
                                           longitudinal strength complying with AS 2634-1983 for tank   foam insert.
                                           design.                                                      The coalescer unit is mounted in
                                                                                                        the second chamber, providing
                                                                                                        a coalescence process for the
                                                                                                        separation of smaller globules of light
                                                                                                        liquid pollutants before final discharge
                                                                                                        to stormwater.