CCP 05-27-1997 - Laserfiche WebLink

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I I PROPOSED IMPROVEMENTS I - This section of this report addresses the proposed improvements associated with the development of the Gateway Business District. It is anticipated that these improvements could be initiated by I mid-summer of 1997 in order to meet the demands of the potential occupants of Welsh Companies' Phases I through IV. I Sanitary Sewer I Through the analysis of the existing sewer and anticipated development concepts presented by Welsh Companies, two distinct alternates for the installation of sanitary sewer have been I developed for the City's consideration. The fIrst alternate would either remove, or abandon in- place, the existing IS-inch MCES trunk sewer main and reroute it within the proposed street right- I of-way adjacent to the Minnesota Transfer railroad spur. This alternate is presented on Exhibit 5A and would require the installation of approximately 2,200 linear feet of 21-inch RCP pipe, a I 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 I . flow from the City of Arden Hills. I Project costs for the rerouting of the City's major trunk sewer line are estimated at $316,500, as presented in the cost tabulation section of this report. The benefIt of this alternate is the I potentially enhanced developability of the large tract of property located south of the rail spur. A costlbenefit 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 I shorter segments of S-inch PVC sanitary sewer serving either end of the proposed roadway adjacent to the rail spur. Alternate B sanitary sewer improvements are presented on Exhibit 5B. I These improvements would involve the installation of approximately 1,700 linear feet of gravity sewer and a segment of smaller jack-bored pipe beneath the rail spur, as well. This alternate I would not affect the existing alignment of the IS-inch trunk sewer main; however, as a result, the southern portion of the District would be limited or restricted in its development options which I may reduce the potential tax revenues generated by the site. I- I -5- FEAS-520.089 520-089-10