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COST ESTIMATES <br />Cost estimates for closure and annual postclosure maintenance of the <br />Corral Hollow Sanitary Landfill are presented in Table 5. In pre- <br />paring the cost estimates, EMCON assumed that (1) the site will be <br />closed in accordance with the closure schedule, (2) postclosure main- <br />tenance will begin immediately after closure, and (3) postclosure <br />costs will continue for a 30 -year period after closure. These costs <br />will be updated annually to reflect any adjustments for inflation. <br />The following additional key assumptions were made in compiling these <br />estimates: <br />• Low -permeability soil and soil suitable for vegetation <br />will be obtained from off-site borrow sources by com- <br />petitive bidding. <br />• The gas probes will be monitored annually. <br />• The site will be inspected quarterly. <br />Based on Table 5, the total estimated closure cost is approximately <br />$1,280,000 and the annual postclosure maintenance cost is approximate- <br />ly $72,000. <br />CLOSURE AND POSTCLOSURE FUNDING <br />An irrevocable fund for closure and postclosure activities is being <br />established through the collection of portions of the Corral Hollow <br />Sanitary Landfill gate fees. <br />PJ9 9390310.00D 19 <br />cmrnn Dec~;#%ioe <br />