CC PACKET 09081998 - Laserfiche WebLink

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It is proposed that three (3) storm water overflow basins be constructed within the project area. The storm water overflow basins are to be located: in the southeast quadrant of the intersection of Pahl Avenue and Wilson Street,east of Wilson Street extending from Pahl Avenue to St. Anthony Boulevard, and east of Wilson Street north of St.Anthony Boulevard and south of the alley between Wilson and Coolidge north of St. Anthony Boulevard. The proposed storm water system improvements are shown on Figure 4 in Appendix A. 4.4 Street The reconstruction of the existing streets is intended to improve the design strength of the pavement system and provide a street surface that will provide an extended life for the City of St.Anthony. The existing street widths will be maintained in the new street to minimize impacts on the existing driveways,boulevards, and landscaping. ' The proposed street reconstruction areas are shown on Figure 5 in Appendix A. Wilson Street and Pahl Avenue will be reconstructed by removing approximately tthree feet (3') of material including the existing bituminous material. After the excavation,a geotextile fabric will be placed to separate the underlying soft materials from the granular materials. One foot(1)of granular material of"sand cushion"will ' be placed on the geotextile fabric to provide a firm base for the eight inches(8")of Class 5 aggregate base and five inches (5")of bituminous pavement. The alleys will be reconstructed with six inches (6") of Class 5 aggregate base and four inches(4")of bituminous pavement. The Class 5 aggregate base will be placed ' directly onto the existing silty clay, or silty clay fill that underlie the existing four- inch(4")bituminous surfacing. The alleys will be constructed with a"valley"down the middle to provide positive runoff away from the existing garages and yard areas. 4.5 Permits and Approvals Reconstruction of the existing sanitary sewers and water mains,will require a permit from the Minnesota Pollution Control Agency (MPCA), and the Minnesota Department of Health, respectively. 4.6 Detour Routes The project will require significant excavation and disposal of unacceptable material from the existing street area, and a supply of significant volumes of granular base, ' aggregate base and bituminous pavement materials. This effort will require closing the roads under construction and increasing loaded truck traffic on the streets adjacent to the construction area. Adequately signed detours will be identified to ' direct traffic around the construction zones and notify users of the increased truck and construction activity. In order to accommodate the property owners along the excavated roads,temporary parking on the adjacent streets may be necessary during ' the periods of time when vehicle access is not possible. ' City of St.Anthony-1999 Street&Utility Improvement Project Feasibility Report A ' WSB Project No.1065.21 WSB e- Page 7