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4110101'K162�e� <br /> y i * <br /> to track system performance and monitor changes in the <br /> contaminant plume. This program would include but not <br /> be limited to the following. <br /> 1. Weekly monitoring of all wells at the site for <br /> determination of depth to water and product thick- <br /> ness parameters. <br /> -� 2. Bi-weekly maintenance of the pumpino and vapor <br /> system components. <br /> 3. Bi-weekly sampling of treatment system effluent <br /> as required by the Stockton Sewer District. <br /> 4. Ai-weekly vapor monitoring of buildings and <br /> subsv+rface utilities in the area. <br /> ' 5. Monthly water sampling at monitoring wells for <br /> -•v� analysis of dissolved hydrocarbon concentrations <br /> by EPA Method 602. <br /> 6. Monthly water sampling of selected domestic wells <br /> ;n <br /> for analyses of dissolved hydrocarbon concentra- <br /> tions by EPA Method 602. <br /> 7. Monthly update reports for submittal to state and <br /> county agencies. <br /> PROJECT PaXAGEHEI T <br /> ~ The services described above would be performed under direct <br /> supervision of Gary Taggart, who would act as project manager. <br /> He is a certified engineering geologist in California and <br /> District Manager of Groundwater Technology's Concord office. <br /> 13 <br /> x <br />