CCP 05-12-1997 - Laserfiche WebLink

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I I. PROPOSED IMPROVEMENTS I This section of this report addresses the proposed improvements associated with the development I of the Gateway Business District. It is anticipated that these improvements could be initiated by mid-summer of 1997 in order to meet the demands of the potential occupants of Welsh I Companies' Phases I through IV. Sanitary Sewer I Through the analysis of the existing sewer and anticipated development concepts presented by I Welsh Companies, two distinct alternates for the installation of sanitary sewer have been developed for the City's consideration. The first alternate would either remove, or abandon in- I place, the existing 18-inch RCP trunk sewer main and reroute it within the proposed street right- of-way adjacent to the Minnesota Transfer railroad spur. This alternate is presented on Exhibit I 5A and would require the installation of approximately 2,200 linear feet of 2 I-inch RCP pipe, a segment of which would require jack-boring beneath the rail spur. This installation would provide .- service to those properties in Phases II, III, and IV; while maintaining the trunk sanitary sewer flow from the City of Arden Hills. I Project costs for the rerouting of the City's major trunk sewer line are estimated at $336,000, as presented in the cost tabulation section of this report. The benefit of this alternate is the . potentially enhanced developability of the large tract of property located south of the rail spur. A cost/benefit analysis of this alternate, with consideration of TIP dollars and future tax revenue I potential, should be completed to further analyze the economic viability of this alternate. . The second alternate for sanitary sewer construction would consist of the installation of two shorter segments of 8-inch PVC sanitary sewer serving either end of the proposed roadway I adjacent to the rail spur. Alternate B sanitary sewer improvements are presented on Exhibit 5B. These improvements would involve the installation of approximately 1,700 linear feet of gravity I sewer and a smaller jack-bored segment beneath the rail spur, as well. This alternate would not affect the existing alignment of the I8-inch trunk sewer main; however, as a result, the southern I portion of the District would be limited or restricted in its development options which may reduce the potential tax revenues generated by the site. .. I -5- FEAS-520.089 520-089-10