Agenda - 10-07-1991 - Laserfiche WebLink

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r� structure is already very high for the amount of sewer flow used, a large rate increase is not a desirable option for making a viable enterprise operation of the existing Efland sewer system. The best options for operating the sewer system as an enterprise involve increasing the service area and the customer base of the existing system by expanding the system if the expansion can be undertaken without increasing the system's capital debt burden. EXPANSION OF THE SEWER SYSTEM Recently. citizens of the Efland area have approached the County Commissioners about expanding the Efland sewer system along the lines of the future phases shown in the attached map. Many of these citizens residing in the remaining section of Phase I, shaded in yellow on the map, are of the opinion that the County has a contractual obligation to expand the system to serve them. Several citizens have demonstrated a need for expansion of the sewer system by presenting evidence to individual County Commissions of irreparable septic tank failures and other environmental health hazards. A portion of the remaining phases of the Efland sewer system has already been designed. The section designated as Phase II, shaded in green on the attached map, was bid as an alternate when the original sewer project was bid. This phase was omitted from the project due to insufficient funding. The remaining phases of the expanded system have been designed only conceptually. However, Hazen.and Sawyer used the best available mapping and property information as well as on -site visits to arrive at a preliminary design that should prove to be reliable. The estimated construction cost figures for expansion of the sewer system, on a phase by phase basis are shown in .the table below. These total cost figures are based on quantities taken from the Hazen and Sawyer sewer construction phasing map of Efland, which is attached to this report and which has been__. -color coded by phase. The quantities used to calculate costs are very rough, as the,maps are of very small scale. The individual construction element unit prices as well as the engineering, survey. legal, administrative and contingency costs were provided by Hazen and Sawyer on September 19, 1991. If all of the remaining phases were to be built simultaneously, there could be substantial savings on engineering related costs.