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Honorable Chairman and <br />Board of County Commissioners <br />9/16/91 <br />Page 30 <br />financed and does not allow for the possibility of contributions from other <br />sources such as impact fees. As indicated above, after the actual amount of <br />the grant is determined. the local share of costs to be financed and <br />resulting annual debt service costs can be refined. <br />OPERATION AND MAINTENANCE EXPENSES <br />Operation and maintenance (O&M) expenses are projected in Table 9. Total O&M <br />costs have been estimated in 1991 cost levels for the first full year of <br />operations at approximately $204,000. This amount consists of $ 182,500 for <br />sludge related costs plus the balance of $21,500 related to septage and <br />grease waste treatment. For projection purposes, the costs are further <br />disaggregated into fixed and variable components. Fixed costs are those <br />which will not vary with changes in waste quantities delivered to the <br />Regional Sludge Facility, and consist of labor and billing costs. Variable <br />O&M costs are all other costs, including electricity, chemicals, solids <br />residual hauling, landfill disposal, and sidestream treatment. Fixed costs <br />are projected by escalating them at an annual rate of 4 percent to reflect <br />the anticipated effects of inflation. Variable costs are inflated by a <br />somewhat higher rate of 5 percent annually, compounded by the projected <br />annual percentage change in waste quantities delivered. <br />Because the Regional Sludge Facility will not be completed and placed into <br />operation until the middle of Fiscal Year 1993, no O&M costs are projected <br />for Fiscal Year 1992, and only half the total annual cost is projected for <br />Fiscal Year 1993. Fiscal Year 1994 is anticipated to be the first full year <br />of operation, and this is the reason for the large increase in that year over <br />Fiscal Year 1993, with much smaller annual increases thereafter. <br />M . VRB2 /5 <br />