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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> CLEANUP AND ABATEMENT ORDER NO 5-00-704 <br /> - FOR <br /> CHEVRON PRODUCTS COMPANY' <br /> IVERN AND ROGER BAFFONI <br /> AT <br /> 301 WEST KETTLEMAN LANE, LODI <br /> SAN JOAQUIN COUNTY <br /> The Califomia Regional Water Quality Control Board, Central Valley Region, (Hereafter Board) finds <br /> that- <br /> 1 The former Chevron Station #9-5775 at 301 West Kettlernan Lane in Lodi was operated as a <br /> gasoline dispensing facility by Chevron Products Company until August 1998 The property was <br /> and is now owned by Ivem and Roger Baffom Therefore, the Chevron Products Company, and <br /> Ivern and Roger Baffoni, are hereafter collectively referred to as Discharger <br /> 2. On 24 August 1998, five underground storage tanks(USTs), dispenser islands and associated <br /> product piping were removed In January 1999, five soil borings were drilled, and four of the <br /> borings were completed as mormtonng wells(MW-1 through 1•nN-4) screened from 45 to 65 feet <br /> below ground surface(bgs) Groundwater samples collected on 3 February 1999 were found to <br /> contain up to. <br /> • 11.,000 micrograms per liter(µg/1)of total petroleum hydrocarbons as gasoline(TPHg), <br /> 40 6,800 pg/I of benzene, <br /> • 62,000 µg/1 of methyl tertiary butyl ether(MtBE); <br /> • 2,400 µg/1 of ethyl tertiary butyl ether(ETBE); and <br /> • 780 µg/1 of tertiary amyl methyl ether(TAME) . <br /> 3. Subsequent soil and groundwater investigations were completed., and one extraction well and <br /> five additional monitoring wells were installed. Extraction well EX-1 is screened from 55 to 65 <br /> feet bgs, monitoring well MW-5 is screened from 70 to 75 feet bgs, and the other monitoring <br /> wells are screened from 45 to 65 feet bgs. Five groundwater sampling events have been <br /> completed between February 1999 and March 2000. Groundwater samples collected on the <br /> 1 March 2000 quarterly monitoring and sampling event,were found to contain up to. <br /> • 51,000 µg/I of TPHg; <br /> 39,000 µg/l of benzene; <br /> • 720,000 Itg/I MtBE; <br /> • 18,000 Itg/l ETBE; and <br /> • 6,000 ttg/I TAME. <br /> 4. On 24 March 2000, Chevron's consultant,Gettler-Ryan incorporated (GR) started weekly <br /> pumping at extraction well EX-1. Approximately 300 gallons of groundwater was purnped in 6.5 <br /> California Environmental Protection Agency <br /> R"y"Paper <br />