and tne runoff will have to pum ia the slough, even after cleaning out, i in co hold a 24-hour duration, 10-year return storm. An additional 59,400 m3 of storage has to be created. This fs not feasible within the confines of the Reeve Street Park limits without building a dyke on the left bank of the Siougn. Therefore, with the completion of the closure dyke, it is recommended that the proposed Dump station be constructed. For the present it would be sufficient to install one pump and the other pump coutd be installed after Tull development. not open storm Sewers and Ditchina These items of work could be considered along with development proposals for the different areas. However it is important to note that when approving proposals for the lower areas, the Capacity and the grades of the sewers are sufficient to accommodate future development of the upland areas. It is evident from the Study that some of the existing sewers in the Shaughnessy Street area are already under capacity to handle the current development. It may be feasidle to cost-share the storm sewers and the ditches with the developers. 4.2 COST ESTIMATE -l Pump Station and Slough Improvements -l Pump Station - (for two pumps } Site Work Including Dewatering $26,000 Structural (concrete) 58,000 Mechanical (metal work) 38,000 Electrical (including power supply) 40,000 Pumps (including pump columns) 90,000 $252,000 -<ยข Improvements to East Slough Clearing Debris 30,000 Excavation 20,000 50,000 Subtotal 302, 00u Contingencies 15% 45,000 347,000 Engineering Design & Supervision 15% 23,000 Total part 1 $400,000 ASSOCIATED ENGINEERING