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Operations Layer and Closure Soil Volume Estimate <br />Foothill Sanitary Landfill <br />Operations Layer Soils <br />Total Landfill Surface <br />674.0 <br />acres <br />ET Closure cap area (1) <br />7.6 <br />acres <br />Total Surface to Receive Liner <br />666.4 <br />acres <br />Surface now lined (2) <br />48.9 <br />acres <br />Surface to receive liner (and ops layer) in the future <br />617.5 <br />acres <br />Operations Layer Thickness <br />2.0 <br />ft <br />Future Operations Layer Volume 2.0 Million cy <br />Closure Soils <br />Total Landfill Surface <br />674.0 <br />acres <br />Area presently closed (3) <br />7.6 <br />acres <br />�® Remaining to be closed <br />666.4 <br />acres <br />Closure -layer thickness (4) <br />4.5 <br />ft <br />Future Closure layer volume <br />4.8 <br />Million cy <br />17 <br />Total Soil Requirements <br />for future Operations Layer and Closure <br />Notes <br />1 The ET Closure cap area will not receive liner <br />2 Includes overlay of Module 1 onto Module "I" <br />3 Assumes top deck of Module "I" will be accepted as closed <br />4 Assumes evpotranspirative closure method <br />6.8 Million cy <br />Foothill Sanitary Landfill Public Works/Solid Waste <br />Joint Technical Document County of San Joaquin - July 30, 2010 <br />