Att 4 - SWMP · MCU21/0117

                           o     ½ Pod C & Pod B roof run-off

                                      ▪     2x2 bed = 3.2 persons

                                      ▪     2x3 bed = 4.6 persons

                                      ▪     7.8 * 47L = 367L/day

                           o     ½ Pod A roof run-off

                                      ▪     2x2 bed = 3.2 persons

                                      ▪     3.2 * 47L = 150.4L/day

                    -   External Reuse

                           o     75% of the pervious area in proximity to the tank will be irrigated at
                                 548mm/year

                           o     ½ Pod C roof run-off

                                      ▪     0.75 * 110m² * 0.548 = 45kL/year

                           o     ½ Pod C & Pod B roof run-off

                                      ▪     0.75 * 162m² * 0.548 = 67kL/year

                           o     ½ Pod A roof run-off

                                      ▪     0.75 * 40m² * 0.548 = 16kL/year


                           4.2.1.1.         Pit Inserts

            All grated inlet pits within the development are to be fitted with Ecosol Litter baskets with
            200µm filter Bags. These have been certified by the manufacturer as having the pollutant
            removal efficiencies shown in Figure 4.5 - Ecosol Litter Basket Pollutant Removal Efficiencies.
            The inserts are modelled using generic treatment nodes, with a high flow bypass of 53L/s
            and concentration-based capture efficiency set in accordance with manufacturers
            guidelines. Refer to Appendix C Ecosol Litter Basket Technical Specification for further
            details on the devices.




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