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Work Plan for Monitoring Well Closures 7500 W 11`h. St., Tracy, CA Page 2 of 2 a • At each of the well sites the well casings will be over-drilled using hollow- stem augers operated by a contractor holding a C57 contractor's license issued by the California Contractors State License Board so as to completely remove the ly casings over their total depth. The drill cuttings will be transported using a front loader for temporary storage on industrial plastic on the 7500 W, 1 i th. Street site. • Following extraction of the well casing the borings at each well site will be tremie grouted with Type II Portland Cement until they are full to the surface. • At well sites MW-6, MW-8, MW-9, MW-10, MW-11, and MW-19 a contractor holding a Class A contractor's license issued by the California Contractors State License Board will be engaged to repave the temporarily patched surfacing with not bituminous macadam in compliance with the requirements of the San Joaquin. County Department of public works. Following ficial paving those well sites and the site of Monitoring Well MW-13 which will be restored using concrete will be inspected by a San Joaquin County Department of Public Works inspector. * Following completion of the well closures and application, supported1by the results on analyses of the drill cuttings generated at the time the monitoring wells were installed, will be made to the Forward Landfill ' Mara ce a California for acceptance of the material at that permitted disposal ami Lrj' Following acceptance of the waste by Forward, all of the drill cuttings, we casings and debris and the industrial plastic on which it had been temporarily stockpiled will be loaded into an end dump truck and transported under a special waste manifest to that facility for disposal. - • On completion of the work all areas of the site will be left in a clean and neat condition free of mud, dirt, debris or surface staining. rr D. J. Watkins PhD., PE Geotechnical Engineer Dietz Engineering and Construction, Inc.