Laserfiche WebLink
structures within 1000 feet of the waste deposit <br /> perimeter. Due to the surrounding land use, no cost will <br /> be associated with monitoring for structures within 1000 <br /> feet of the waste deposit areas. Monitoring frequency may <br /> be reduced if previous monitoring results show that <br /> landfill gas is not migrating off site. The gas <br /> monitoring probes will be surrounded with barrels or fence <br /> to protect them from damage. <br /> 6. Ground water monitoring will continue on a quarterly basis <br /> during postclosure until leachate is either no longer <br /> being produced or is not a threat to ground water quality. <br /> The parameters that will be tested are listed in Appendix <br /> A from the waste discharge requirements. The groundwater <br /> monitoring wells will also be protected at the surface in <br /> the same manner as the gas wells. <br /> 7 . Final grading will be inspected quarterly for ponding and <br /> erosion. Corrective measures will be taken if the site <br /> face is not draining properly. As the project is <br /> developed there will be an excess of soil generated. This <br /> soil will be strategically stockpiled during normal <br /> landfill operations and can be used for maintaining final <br /> grading. There will be no cost associated with <br /> acquisition of materials to maintain design grades. <br /> 8. A vadose zone monitoring system will be installed and <br /> monitored at the landfill. The lysimeters will be <br /> monitored at the same frequency and will test for the <br /> same parameters as the groundwater monitoring wells. <br /> These described environmental and monitoring control systems and <br /> postclosure maintenance and monitoring tasks will be continuous for <br /> a minimum of thirty years. They will be decommissioned in 30 years <br /> after final acceptance of refuse if it can be demonstrated that the <br /> site is no longer a threat to the environment. <br /> II. PRELIMINARY POSTCLOSURE MAINTENANCE COSTS <br /> Postclosure Maintenance costs are estimated on an annual basis. <br /> REVEGETATION <br /> Assume that approximately 50 acres of the landfilled area will <br /> require annual fertilization to revegetate poorly established <br /> areas. 16-20-00 fertilizer will be applied at a rate of 200 pounds <br /> per acre by a contractor for $100 per acre. Irrigation will not be <br /> required. <br /> 3 <br />