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' 3.3. Storm Sewer ' The existing storm sewer consists of a 36-inch (36") RCP, which flows from north to south along Wilson Street from 32nd Avenue to 30th Avenue. An 18" and 15"RCP tie into the Wilson Street RCP from 31 st Avenue. The existing storm sewer on 32nd Avenue, east of Wilson Street, is a 33-inch (33") storm sewer, and a 24"RCP conveys flow from the west. There is no existing storm sewer on Harding Street NE. ' The storm water conveyance system within Wilson Street is considered a trunk system, which receives water from approximately 330 acres. During heavy rainfall conditions, the storm sewer is not adequate to collect the runoff and convey it from the street area. Intersections regularly are flooded with a few inches to a few feet of water. In some cases the water level is high enough to flow from the roadway into adjacent garages and basements. 3.4. Streets Wilson Street, 31st Avenue NE, and Harding Street NE are generally 30-foot(30')wide streets,with concrete curb and gutter. There is a section of Wilson Street which borders 1 the cemetery south of 31"Avenue, which is less than 30 feet in width. No borings were taken for these streets but other borings in the area have indicated there was approximately 5 inches (5")bituminous over two and one-half feet of silty sand fill. Soil borings will be completed during final design. ' 4. PROPOSEDIMPROVEMENTS 1 4.1. Sanitary Sewer The existing 10-inch (10") VCP will be reconstructed with 10"PVC on Wilson Street from 30th Avenue NE to 32nd Avenue NE , including the intersection and west to the intersection with Edward Street. The existing 9-inch(9")VCP will be reconstructed with 10-inch(10") PVC on 31st Avenue NE and 32nd Avenue from Wilson Street to the ' intersection with Belden Drive. The proposed sanitary sewer improvements are shown on Figure 3 in Appendix A. 1 4.2. Watermain ' The existing water mains will be entirely or partially exposed by the excavation required for the sanitary sewer and storm sewer improvements. In addition,many of the water service lines to the individual properties will be removed or disconnected for a period of ' time. The excavation for the other utilities provides a timely opportunity for improvements to the water distribution system before significant problems are experienced. 1 ' City of St.Anthony-2002 Street and Utility Improvement Project Feasibility Report ' WSB Project No. 1065-592 Page 4