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After the sealing material has set in wells MW1 through MW3, the excavations will be filled to <br /> within approximately 3 inches of surface grade with an aggregate material and the remaining 3 <br /> inches will be filled with asphalt patch or concrete to restore the site's appearance. <br /> Based upon well construction details and assuming the filter pack for each well has an estimated <br /> porosity of 25% (Heath, R. C., 1983), an estimated volume of approximately 91 gallons of grout <br /> will be used to abandon wells MW1 through MW3. Monitoring well construction data, soil <br /> boring logs, and grout volume calculations are attached. One permit application and associated <br /> fees (check no. 1087) are attached. The application is for the destruction of the three on-site <br /> monitoring wells. <br /> Report Preparation <br /> Upon completion of the well destruction activities, a summary report will be prepared for <br /> submittal to San Joaquin County Environmental Health Department (SJCEHD). The report will . <br /> include a description of all field activities. <br /> 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 /> Safety Plan and Quality Control/Quality Assurance Plan for this site, on file at SJCEHD. <br /> Projected Schedule <br /> ATC has tentatively scheduled field activities for December 2005. Once approval of this <br /> workplan has been received, ATC will confirm the schedule for drilling activities. ATC will <br /> notify SJCEHD at least 48 hours prior to beginning any field activities. The summary report will <br /> be submitted to SJCEHD approximately two weeks after the completion of field activities. <br />