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AS so C I ATE S INC . <br /> For protection of the seal at the land surface, a hole at least two feet in diameter will be <br /> excavated around the outside of each well casing to a depth of approximately two feet below <br /> ill over into the <br /> ground surface. The sealing material used to seal the well will be allowed to spill <br /> excavation. <br /> the excavations will be filled to <br /> material has set in wells MW 1 through , <br /> After the sealing mater g MW3 <br /> g <br /> within approximately 3 inches of surface grade with an aggregate material and the remaining 3 <br /> inches will be filled with asphalt patch to restore the site's appearance. i <br /> At the request of the City of Stockton Public Works Department, the entire concrete slab of the <br /> sidewalk where monitoring well MW4 is located will be removed and replaced. The concrete } <br /> k slab will be replaced by a licensed concrete contractor to the specifications of the City of <br /> Stockton Public Works Department.- The sidewalk on the northern side of West Harding Way i <br /> will be closed during the well destruction activities. <br /> Two permit applications and associated fees (check no. 558) are also attached. One application is <br /> for the three on-site monitoring wells and one application is for the off-site monitoring well. A City j <br /> ' of Stockton Encroachment Permit is also attached. <br /> 3 <br />� <br /> One soil sample will be collected from the cuttings generated from the destruction of well MW3.p , <br /> The soil sample will be analyzed for total petroleum hydrocarbons as diesel (TPHd), as stoddard } <br /> solvent (TPHss), as gasoline (TPHg) by EPA method 8015; benzene, toluene, ethyl benzene, and ! <br /> xylenes by EPA method 8020; and total dissolved lead. The soil analytical results will be used to <br /> profile the soil cuttings for disposal at the Forward Landfill in Stockton. An estimated 20 drums <br /> I containing soil cuttings will be transported to the Forward Landfill for disposal., <br /> x <br /> t Report Preparation <br /> Upon completion of the well destruction activities, a summary report will be prepared for <br /> submittal to PHS/EHD. The report will include a description of all field activities. <br /> t <br /> 4 All work described in this workplan will be performed under the direction of a California <br /> Registered Professional Engineer. All work will be performed in accordance with ATC's Site <br /> t Safety Plan and Quality Control/Quality Assurance Plan on file with PHS/EHD. <br /> Proiected Schedule <br /> ATC has tentatively scheduled field activities for December 3 and 4, 2001. Once approval of <br /> this workplan has been received, ATC will confirm the schedule for drilling activities. ATC will <br /> w:lwordpro1172951reportslwpwell.doe 2 <br /> .I <br />