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Stantec <br /> Quarterly Status Summary Report— Third Quarter 2011 <br /> Former ARCO Service Station No. 443 <br /> December 9, 2011 <br /> Monitoring and Sampling <br /> Groundwater monitoring wells MWAD, MW-1S through MW-4S, and MW-5 through MW-8 are <br /> sampled semiannually (2Q and 40). No groundwater monitoring or sampling was performed <br /> during 3Q11. <br /> Current Assessment Activities <br /> No assessment activities were performed during 3Q11. <br /> Remediation Status <br /> There is no active remediation present at the site; however, six monthly groundwater bulk <br /> extractions via a vacuum truck will be initiated during 4Q11. <br /> Waste Disposal Summary <br /> No waste was generated during 3Q11. <br /> Recent Correspondence <br /> In a correspondence dated September 26, 2011, the San Joaquin County Environmental Health <br /> Department conditionally approved Stantec's Work Plan, MW-1S Rehabilitation and Bulk <br /> Extraction dated September 20, 2011. <br /> This Quarter's Activities(Third— 2011) <br /> 1. Stantec submitted the Semiannual Groundwater Monitoring Report Second Quarter <br /> 2011 on August 15, 2011. <br /> 2. Stantec submitted Work Plan, MW-1S Rehabilitation and Bulk Extraction on September <br /> 20, 2011. <br /> Next Quarter's Activities(Fourth—2011) <br /> 1. Stantec removed the blockage from MW-1S and restored the well to working condition <br /> on November 2, 2011. <br /> 2. Stantec initiated monthly groundwater bulk extractions from MW-1S immediately <br /> following the removal of the blockage from the well on November 2, 2011. <br /> 3. Stantec will prepare and submit monthly status reports following each groundwater <br /> extraction event. <br /> 4. Stantec will prepare and submit the QSSR— 3Q11. <br /> 5. Stantec will perform the semiannual groundwater sampling event. <br /> 443 QSSR 3Q11.doc 2 <br />