Agenda - Council - 06/10/2003 - Laserfiche WebLink

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5.0 plan. All mains will be DIP. Fire hydrant spacing will be approximately 300 to 400 feet. One-inch service connections will be provided for all existing developed lots. Where the adjoining 'property is undeveloped, one-inch sen/ices will be provided at 85 foot intervals. See "EXHIBIT B" for detailed description of the proposed water system improvements. C. Sanitapl Sewer System All proposed sanitary sewer lines will be 8" PVC pipe with manhole spacing at 400-feet maximum. The depth of tlfle sanitary sewers will be between t0 .to 12 feet except where more depth is required to connect to existing sewers' or where the deeper lines would result in a more cost effective system. Four-inch service lines were included for all existing homes and all lots to be built on in the future. The potential for future service to futuJe development beyond the project limits was not considered very likely. Therefore, no extraordinary depth was provided in the sewer design to maximize the upstream reach to properties outside the current project boundary.- See "EXHIBIT C" for detailed description of the proposed sanitary sewer system improvements. ESTIMATED COSTS The detailed estimates.of construction cost for all of the improvements are shown in "EXHIBIT D". The estimated project costs presented herein reflect the construction, right-of- way or easement, and overhead costs. Construction costs are estimated contract amounts for the actual construction. Easement costs include providing a 20-foot permanent easement along the off-right-of-way route of the water, sanitary or storm sewers. Easements already exist for the detention pond area. It was assumed that temporary construction easements, if needed, would be Provided at no cost. If easements cannot be obtained through negotiation, eminent domain will be required. The cost of condemnation is not included in the cost presented below, and would increase the necessary assessment to finance the project. . Overhead costs include, but are not limited, to, engineering., construction staking and inspection, administrative service, legal, and contingency. Overhead costs for the project are estimated based on percentages of construction cost. Those percentages are estimated to be as follows: · Engineering 9% · Staking & Inspection 7% Page 4 G:.tMunicipal~AAAM S E Yt632\FLAI~32F S R. doc I I I I I I I I I I I I i I