RFI - Attachment 3 - Stormwater Management Plan

5.0 Key Dimensions

The Ecosol™ Litter Basket can be fitted to new and existing side entry pits (whether
single, double, or triple in size), including those with non-standard inlets, outlets,
and junctions. The table below shows the approximate dimensions and holding
capacities for the most typical Ecosol™ Litter Basket applications. Holding
capacities, treatable flow rates and by-pass capacities vary dependent on the
site-specifics.


                                                                              Holding Capacity                                        Static
   Stormwater Inlet Pit                       Dimensions                                              Treatable Flow      By- pass
                                                                            (typical basket depth                                    Head in
       Description                         (Length x Width)3                                            Rate (L/s)2       Capacity
                                                                                  450mm)1                                            By-pass

                                                                                                    200µm       1.5mm
                                 Pit                       Litter Basket            (m3)
                                                                                                     mesh        mesh
                                                                                                                            L/s          mm

         Drainway             600 x 595                        600 x 445            0.120            53           106       110          150
                              600 x 600                        600 x 450            0.121            53           106       110          150
  Single Grated Kerb Inlet
                              900 x 750                        900 x 450            0.182            83           167       215          150
        (with Lintel)
                              900 x 900                        900 x 600            0.243            83           167       215          150
                              1200 x 600                   2 x 600 x 450            0.243            103          212       220          150
 Double Grated Kerb Inlet     1200 x 900                   2 x 600 x 600            0.324            103          212       430          150
      (with Lintel)           1800 x 600                   2 x 900 x 450            0.364            106          220       230          150
                              1800 x 900                   2 x 900 x 600            0.496            106          220       440          150
                              600 x 660                        600 x 450            0.121            53           106       110          150
   Single Side Kerb Inlet
                              900 x 750                        900 x 450            0.182            83           167       215          150
  (with Lintel - no grate)
                              900 x 900                        900 x 600            0.243            83           167       215          150
                              1200 x 600                   2 x 600 x 450            0.243            103          212       220          150
   Double Side Kerb Inlet     1200 x 900                   2 x 600 x 600            0.324            106          220       430          150
   (with Lintel - no grate)   1800 x 600                   2 x 900 x 450            0.364            106          220       230          150
                              1800 x 900                   2 x 900 x 600            0.486            106          220       440          150
                              600 x 600                        600 x 450            0.121            53           106       110          150
     Grated Field Inlet
                              900 x 750                        900 x 450            0.182            83           167       215          150
     (no Kerb or Lintel)
                              900 x 900                        900 x 600            0.243            83           167       215          150
                                600                            437 x 437            0.085            54           108       120          150
                                 750                           558 x 558            0.140            92           184       172          150
       Circular Inlet
                                 900                           680 x 680            0.208            103          212       225          150
                                1050                           801 x 801            0.228            103          212       225          150




                                                    ¹Holding capacities are largely determined by the existing inlet pit dimensions and
                                                    the outlet pipe diameter but typically ranges from 120 - 364Kg at 100% full.

                                                    2The TFR varies dependent on the size of the Litter Basket , mesh appetures and
                                                    percentage of fill for the individual baskets. For the purpose of providing indicative
                                                    TFR’s we have assumed a minimum 375mm diameter outlet and empty litter baskets.

                                                    3All Ecosol™ Litter Baskets installed in pits larger than 600mm in width are fitted with
                                                    flow plates, removable capture baskets, optional hydrocarbon socks and include
                                                    by-pass openings to cater for peak flow conditions.




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