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i I I Sanitary Sewer IMPROVEMENTS In order to provide service to the proposed buildings, additions to the sanitary system must be considered. To analyze the expected sanitary sewer additions needed, the finish floor elevation for each of the proposed buildings was estimated based on the existing topography of the area. In addition to this, an assumption regarding the status of an underground parking system had to be made. The mptions were based on knowledge of similar buildings and correspondence with the developer. Pipe was calculated at a minimum grade from the nearest existing ole. these minimum, conservative elevations, it was determined whether or not servi o be avai o the proposed building with the existing system. If service was available, a wa dded out to ter of the proposed lot. In the case that the proposed building cou ot be se d by the existing ystem, pipe and manholes were designed to be removed and p as nec ry in order to all ervice. Figures 3.1 and 3.2 depict the proposed options available. Optio ows one service installed per townhome complex while Option 2 installs a ' idual service to e wnhome unit. It is recommended that the City chose Option 1 in order to keep c COST ESTIMATE The following is a gener d versio ; the costs ass ' ted with constructing the sanitary sewer improvements descri � RY S R COST ESIIMATE 0 tion 1 0 tion 2 Total Price Total Price Removals $2,200 $4,200 Connection to "n $12,000 $12,000 VC Sanita Se $85,300 $187,000 Sewer S ures $32,500 $62,500 tion $2,200 $4,500 Construction Cost $134,200 $270,200 Contin encies (5°�) $6,700 $13,500 , En ineerin , Admin., Le al, Bondin (30%) $40,300 $81,100 Total Cost $181,200 $364,800 I i i . City of Centerville Project No: 616-07-1610 Downtown Redevelopment # Bonestr+o�o Page 5 str i