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Stantec 0 0 <br /> Quarterly Status Summary Report-First Quarter 2011 <br /> Stockton Charter Way Commingled Plume <br /> April 13, 2011 <br /> Characterization Status <br /> Petroleum hydrocarbon impacts in the soil are adequately delineated by the historical analytical <br /> data and previous assessment activities. Petroleum hydrocarbon impacts in the groundwater <br /> need further delineation as described in the SCM and the Work Plan. <br /> Waste Disposal Summary <br /> Investigation derived waste (IDW), including purge water from well sampling during the fourth <br /> quarter 2010, was stored on-site in Department of Transportation-approved 55-gallon drums <br /> pending the results of laboratory analyses. IDW was transported and disposed of at an <br /> appropriate state-certified disposal facility. The manifests for the fourth quarter 2010 are <br /> included with this report as Appendix A. <br /> WDC stored the concrete cuttings and solid wastes into one 55-gallon drum during the well <br /> reconfiguration activities on March 18, 2011, which was temporarily placed at the former Texaco <br /> (Shell) station pending proper disposal. Waste manifest documentation will be included in a <br /> subsequent report or submitted under a separate cover. <br /> Recent Correspondence <br /> The CRWQCB-CVR commented on the SCM and Work Plan and approved the <br /> decommissioning of three wells located within the pending renovation activities at the former <br /> Texaco (Shell) station in a letter dated February 17, 2011. CRWQCB-CVR, Stantec, Eric Holm <br /> of Antea Group, and the responsible parties (RPs) for the Site met on March 16, 2011 to <br /> discuss the path forward for the Site. The strategy for the Site will be evaluated and reported in <br /> a Feasibility Study, which will be submitted by May 30, 2011 as requested by the CRWQCB- <br /> CVR a letter dated March 17, 2011. Quarterly status reports will be submitted by April 15 and <br /> October 15 of each year; semi-annual reports will be submitted by July 30 and January 30 of <br /> each year. In an email dated April 4, the CRWQCB-CVR agreed that the groundwater <br /> monitoring wells proposed for destruction will be gauged for water levels once per year (during <br /> the second quarter) until they are destroyed. <br /> This Quarter's Activities(First- 2011) <br /> 1. Stantec prepared and submitted the SCM on January 14, 2011. <br /> 2. Stantec prepared and submitted the Further Assessment Work Plan on February 15, <br /> 2011. <br /> 3. Stantec prepared and submitted the 2010 Request for Semi-Annual Monitoring and <br /> Sampling, Remediation System Operations, File Review and Site Conceptual Model <br /> Cost Pre-Approval on February 16, 2011. <br /> 4. Stantec prepared and submitted the 2011 Request for Semi-Annual Monitoring and <br /> Sampling, Remediation System Operations, File Review and Site Conceptual Model <br /> Cost Pre-Approval on February 16, 2011. <br /> 5. Stantec prepared and submitted the Transfer of Groundwater Monitoring Wells on the <br /> Former Dolly Madison Site located at 1426 South Lincoln Street, Stockton, California to <br /> Stockton Charter Way Commingled Plume Site (CP00057) Pre-Approval Request <br /> (Transfer Request) on March 15, 2011. <br /> 6. CRWQCB-CVR, Stantec, Eric Holm of Antea Group, and the RPs for the Site met on <br /> March 16, 2011 to discuss the path forward for the Site. <br /> Stockton Charter Way Commingled Plume QSSR 1Q11.doc 3 <br />