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1.2 Stormwater evacuation path <br /> Ultimately, all the stormwater runoff from both Phase 1 and Phase 2 of the River Islands development will <br /> be drained to Paradise cut via the Phase 2 pump station located west of lake 12. As shown in Figure 1-5, <br /> the pump station is connected to lakes 12, 19 and 22 in Watershed C', C and B respectively and thus the <br /> last link in the stormwater evacuation path for all three watersheds. Phase 1 (watershed A, plus lakes 12 <br /> and 13) stormwater runoff is evacuated from the lakes in Phase 1 either directly to the Phase 2 pump <br /> station via lake 12 or via Pump Station A (located by lake 3)which pumps the water to lake 25 in Phase 2 <br /> (watershed B). <br /> While not included in the modelling or analysis presented in this report, there is an additional stormwater <br /> drainage path for Phase 1 lakes to Phase 2 and Paradise Cut that could be created at a later time, if <br /> deemed necessary. This path would consist of a lake interconnect pipe between lake 11 (Phase <br /> 1/watershed A) and lake 25 (Phase 2/watershed B) offering a third Phase 1-Phase 2 connection. <br /> The Phase 2 pump station will house 3+1 standby stormwater evacuation pumps operating at 25cfs each <br /> totaling 75cfs. The pump settings used for the modelling of the 100-year 48-hour storm is described in <br /> Section 3.2.1. <br /> � l <br /> rT 9 <br /> .�0l9a�F <br /> \\ RwY o LAKE <br /> CIRCU ATION <br /> MOY � MOV <br /> L <br /> I I I I <br /> '2 I YB I YB I 7 I <br /> ® ® ® P4 II IRRIGATION STATION <br /> I I <br /> I I <br /> I I <br /> TO LANDSCAPE <br /> IRRIGATION <br /> I I I <br /> I <br /> I <br /> m <br /> I <br /> I <br /> I I <br /> 5111111 I I <br /> I I <br /> IRRIGATION qIR GAP <br /> �ls {ABOVE) . _ <br /> y Iake,z <br /> � 1:11 him o I ♦II0 0I� � <br /> POTABLE REIMM AIVEA )BELOW) <br /> WATER WATER WARR <br /> lake 27, � I I <br /> I I <br /> li <br /> Figure 1-5: Schematic plan view of the Phase 2 pump station. <br /> Note:The irrigation and recirculation features shown for schematic only. <br /> While technically located in watershed C(see Figure 1-1), lake 12 constitutes the connection of watershed A to the Phase 2 pump <br /> station as lake 12 in turn is directly connected to the watershed A lake system. <br /> 2 For reference,each pump at pump station A has a capacity of 12.5cfs. <br /> River Islands Phase 2 Stormwater Mitigation Rev 2 6 1� <br /> PACE <br />