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Date: 4/3/97 <br /> Sampler: Wes Johnson & David Wan <br /> Gas onitoring Well Data <br /> Well Date %CH4 %CO2 %02 Balance Pressure <br /> In. of H O <br /> GWISHALL 4/3/97 x_ 37 0 0 0 <br /> GWIINTER 4/3/97 36.3 0 21 0 <br /> GWIDEEP 4/3/97 0 0 20 80 0 <br /> GW2SHALL 4/3/97 21.1 0 7.1 0 <br /> GW2INTER 4/3/97 758.3 41.4 0 0.2 0.2 <br /> GW2DEEP 4/3/97 60 40 0 0 0.2 <br /> GW3SHALL 4/3/97 12.4 7.5 15.6 64.5 0.3 <br /> GW3INTER 4/3/97 57 1 39.5 0 1 3.3 0.2 <br /> GW3DEEP 4/3/97 44 35.6 0 22.4 0.4 <br /> GW4SHALL 4/3/97 0 0.1 19.8 80.1 0 <br /> GW4INTER 4/3/97 0 0.1 18.2 81.6 0.8 <br /> GW4DEEP 4/3/97 0 0.1 19.3 80.6 0.2 <br /> GW5SHALL 4/3/97 0.4 4 7.1 88.5 0.1 <br /> GW51NTER 4/3/97 broken broken broken broken broken <br /> labcock labcock labcock labcock labcock <br /> GW5DEEP 4/3/97 12 9.5 0 78.5 0.8 <br /> GW6SHALL 4/3/97 10.7t 17.6 0 71.6 0.9 <br /> GW6INTER 4/3/97 40.64 39.6 0 19.7 1.4 <br /> GW6DEEP 4/3/97 52.6 47.4 0 0 1.5 <br /> GWISHALL 4/3/97 0 3.4 17.9 78.7 0 <br /> GW7DEEP 4/3/97 0 0.1 19.9 80 0 <br /> MONITORING RESULTS <br /> Landfill gas monitoring at the Corral Hollow Sanitary Landfill indicates that gas migration is <br /> occurring at several locations. The County has addressed this issue by installing final cover <br /> over the entire landfill. Final cover consists of a two foot foundation layer, a one foot clay <br /> barrier layer, and a one foot vegetative cover layer. Final cover will greatly reduce the <br /> amount of moisture entering the refuse, which in turn will reduce methane production. The <br /> County will continue gas testing on a quarterly basis to monitor the effects of final cover <br /> 4 <br />