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0 0 <br /> Meeting Agenda <br /> Chevron Site 306315 <br /> 437 East Miner Avenue, Stockton <br /> Attendees: <br /> SJCEHD Margaret Lagorio <br /> Nuel Henderson <br /> Chevron Stephanie Furgal <br /> ENSR Kent Baugh <br /> George Forsythe <br /> Meeting Date: August 13 (Monday), 2007, 14:00 to 17:00 <br /> Location: San Joaquin County EHD, 304 E. Weber Avenue, <br /> Stockton, CA <br /> Introduction: Stephanie Furgal <br /> Site History: George Forsythe <br /> Chevron/ENSR Suggested Topics for Discussion <br /> 1. Abandonment of Wells Located in High-Traffic Areas — Presentation of <br /> wells that Chevron/ENSR consider unsafe to sample due to traffic <br /> hazards. <br /> 2. Sensitive Receptors <br /> 3. Evaluation of trends in concentration of TPHg and benzene before <br /> beginning of ozone sparge, during sparging, and after sparging in <br /> selected wells from the shallow, intermediate, and deep saturated <br /> zones. <br /> • Presentation of Excel Trend Analyses. <br /> • Presentation of most-recent Mann-Kendall Analyses <br /> • Remaining mass calculations for 2000, 2005, and 2007. <br /> • Presentation of benzene trends in deep wells NP-1-111, NP-2-116, <br /> U-10, U-12, and U-21. <br /> 4. Evaluation of current remediation processes <br /> Monitored Natural Attenuation (MNA) <br /> • Evaluation of MNA performance. <br /> • Evaluation of isoconcentration maps and mass-remaining <br /> calculations to assess plume stability. <br /> • What is the time frame necessary to achieve water quality <br /> objectives? <br />