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GROUND ZERO ANALYSIS, INC. 1714 Main,Street Escalon,California 95320-1927 Telephone: Telephone:(209)838-9888 MISS; llll Facsimile:(209)838-9883 ,iLIN 7 c010 June 16, 2010 ENVIRONMENT HEALTH PERMIIISER VICES Ms. Lori Duncan San Joaquin County Environmental Health Department 600 East Main Street Stockton, CA 95202 Subject: Groundwater Monitoring Well Destruction Permit Application Speedy Foods, 8200 N. Highway 99, Stockton, CA Dear Ms. Duncan: Ground Zero Analysis, Inc. (Ground Zero) is submitting a completed drilling permit application and associated fee for the destruction of nine (9) groundwater monitoring wells and one (1) groundwater extraction well, all of which are located at the subject site (Figure 1). The well destruction activities will be conducted in accordance with Ground Zero's Groundwater Monitoring Well Destruction Workplan, dated June 9, 2010, which was approved by the San Joaquin County Environmental Health Department (EHD) in correspondence dated June 15, 2010. A copy of the EHD Workplan approval letter has been included in Attachment A. Well destruction activities will be conducted by V&W Drilling, Inc. (C57 license #720904) under the supervision of a Ground Zero geologist. Groundwater monitoring wells MW5, MW7, MW8, MW 10, MW 11, MW 1413, MW 17B, MW 18C, and MW 19D and groundwater extraction well EW2 will be destroyed by pressure grouting with neat cement grout. Prior to destruction, the total depth of each well will be measured to ensure no obstructions are present. Neat cement grout will then be pumped into each well through tremie equipment in one continuous operation until each well is completely full. Additional cement will then be added under pressure to force the grout through the well screen and into the filterpack, and subsequently checked for subsidence. If the grout level is observed to have dropped, additional cement will be added under pressure until stable. Upon stabilization, the well monument and upper five feet of well casing will be removed from each well by overdrilling with a bit similarly sized to the originally drilled hole. The resulting annulus will be backfilled with neat cement grout to 3-feet below grade and the remaining annulus will be backfilled with native material to grade. Because the wells are all located in a field that is regularly disked the surface will remain dirt. In addition, the intermediate and deep zone monitoring wells were constructed with steel conducted casing, which will be removed at 4- feet below grade with a cutting torch, and prior to destruction of the extraction well (EW2) the GAGR0UNDZEITULEBERG1Permits&Applications1We11 Dest Permit Cvr.doc