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1 <br /> ADDITIONAL ACTIVITIES PERFORMED AT SITE <br />' The laboratorybenchscale study, as resented in the approved Work Plan or Benchscale Stud and <br /> Y P PP .f Y <br /> Oxidant Infection Pilot Tests dated December 2004,was completed The results of the benchscale <br />' study,along with a summary letter prepared by ETIC dated 24 June 2005,were submitted to the San <br /> Joaquin County Public Health Services Environmental Health Division(SJCEHD)and the Regional <br />' Water Quality Control Board (RWQCB) <br /> A Work Plan for Chemical Oxidation Pilot Study dated July 2005 was also submitted to the SJCEHD <br /> and RWQCB After comments from the SJCEHD and RWQCB were addressed,the work plan was <br /> approved <br /> WORK PROPOSED FOR NEXT QUARTER <br />' Groundwater will be monitored in accordance with the attached groundwater monitoring plan <br /> The approved oxidant injection field pilot test will be performed beginning in September 2005 <br />' The WB system will remain shut down <br /> lie <br /> Attachments <br />' Figure 1 Site Plan Showing Groundwater Elevations and Analytical Results <br /> Figure 2 Site Map Showing Offsite Groundwater Monitoring Well Locations <br /> Figure 3 Influent TPH-g Concentrations and Estimated Mass of TPH-g Removed by WB <br />' System <br /> Figure 4 Influent Benzene Concentrations and Estimated Mass of Benzene Removed by <br /> WB System <br /> Table I Well Construction Details <br /> Table 2 Groundwater Monitoring Data <br /> Table 3 Groundwater Monitoring PIan <br /> Table 4 Operation and Performance Data -WB System <br /> Table 5 Summary of Analytical Results - UVB System <br />' Appendix A Field Protocols <br /> Appendix B Field Documents <br /> Appendix C Laboratory Analytical Reports <br /> g rpro)cets573442V=terlwp1g060513942t=doc 5 <br />