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MONITORING RESULTS <br />Landfill gas monitoring at the Corral Hollow Sanitary Landfill <br />indicates that gas migration is occurring at least to the <br />perimeter of the site along Corral Hollow Road. The County is <br />currently addressing this issue by hiring a contractor to place <br />final cover over the entire landfill. Closure operations will <br />begin in early November including construction of a clay barrier <br />layer and a vegetative cover layer. Final cover will greatly <br />reduce the amount of moisture entering the refuse, which in turn <br />will reduce methane production. The County will continue gas <br />testing on a quarterly basis to monitor the effects of final <br />cover installation on gas migration. Effects of gas migration <br />are expected to be minimal due to the desolate location of the <br />Corral Hollow Sanitary Landfill. The only residence in the area <br />is approximately one mile from the site. <br />ON SITE STRUCTURES <br />The Corral Hollow Sanitary Landfill has two on-site structures: <br />a gatehouse and an equipment shed. These structures were <br />monitored for methane on 10/12/95. The methane reading was <br />approximately 30 ppm for the gatehouse and 40 ppm for the <br />equipment shed. Monitoring will continue on a quarterly basis. <br />