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California Regional Water Quality Control Board <br /> Central Valley Region Ok� <br /> Robert Schneider Chair <br /> Terry Tamminen Arnold Schwarzenegger <br /> Secretary for Sacramento Main Office Governor <br /> Environmental Internet Address: http://w .svacb.ca.gov/mgcb5 <br /> Protection 11020 Sun Center Drive 4200 Rancho Cordova,CA 95670-6114 <br /> Phone(916)464-3291 I Irll, <br /> 29 December 2003 r'}I1 <br /> DEC 3 1 2003 <br /> Mr. Dale Gillespie ENVIRDMuirlul HEALTH <br /> Geweke Land Development and Marketing PERMIT/SERVICES <br /> PO Box 1210 <br /> Lodi, CA 95241 <br /> WORK PLAN APPROVAL, CLEANUP AND ABATEMENT ORDER(CAO)NO. 93-701, <br /> GEWEKE PROPERTY, 16 SOUTH CHEROKEE LANE, LODI, SAN JOAQUIN COUNTY <br /> I have reviewed the Ozone Injection Pilot Study Work Plan (Workplan), dated 18 December 2003, <br /> submitted on your behalf by Advanced GeoEnvironrnental, Inc. The Workplan proposes installation of <br /> three ozone sparging wells around monitoring well MW-4, a 24-week pilot study to determine the <br /> feasibility of injection of ozone to stimulate bioremediation of petroleum hydrocarbons in groundwater, <br /> and monthly groundwater sampling of MW-4 and adjacent monitoring wells MW-1,MW-14, and EW-1. <br /> The Workplan is approved with the following modifications: <br /> • Add all fuel oxygenates, including Methyl tert-Butyl Ether, and Ethylene Dibromide to soil and <br /> groundwater analyses. <br /> • Provide a pilot study status update of the analytical results in the Quarterly Monitoring Report(s). <br /> Include ozone system operating pressures and field notes. <br /> If you have any questions please contact me at (916) 464-4615 or bartonj(a,rb5s.swrcb.ca.eov. <br /> dames L. Barton, R.G. <br /> Engineering Geologist <br /> cc: Mr. Mark Owens, UST Cleanup Fund, SWRCB, Sacramento <br /> Mr. Harlin Knoll, San Joaquin County Environmental Health Department, Stockton <br /> Mr. Brian Millman, Advanced GeoEnvironmental,'Incorporated, Stockton <br /> California Environmental Protection Agency <br /> Cai Recycled Paper <br />