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1 COST ESTIMATE FOR EXCAVATION/DISPOSAL OF WASTE FROM WASHINGTON COUNTY SANITARY LANDFILL NO. 1 cost`-estima�e was prepared for the excavation and off -site disposal of the waste currently landfilled at the Washington County Sanitary Landfill No. 1. The estimated cost for this alternative, as presented in Table 1, is $200,000,000. The cost estimate was itemized into six major cost categories which include: Waste Monitoring; Waste Excavation; Waste Transportation; Waste Disposal; Backfill/Site Restoration; and Site Safety. A standard 10 percent of the total contractor cost was added for engineering and contingencies, respectively. For cost item no. 1, Waste Monitoring, it was assumed that one boring would be drilled per acre of filled area (approximately 35 acres). The purpose of the borings would be to characterize the waste according to MPCA/U.S. EPA regulations to determine the appropriate disposal facility for the waste. Each boring would be drilled to the total depth of the fill collecting samples of the refuse at one -foot intervals for sample analysis. The analytical costs associated with analyzing the samples comprises the significant portion of the cost. The costs for analytical services were obtained from a quote submitted by Interpol) Laboratories. Cost item no. 2, Waste Excavation, was based on an estimated volume of landfilled waste of 2.5 million cubic yards. It was assumed that a maximum of ten crews of operators and laborers with ten dozers and 10 front-end loaders could be working on -site at any one time. It was also assumed that the daily output capacity of the dozers and front-end loaders would be about 33 percent less for working with wastes than the daily output for working with soils which is about 1,000 cubic yards per day per crew as given by Means Construction Costs Data, 46th Annual Edition. Thus, a daily output of 650 cubic yards