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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 /> r\/ERN AND ROGER BAFFONI <br /> AT <br /> ' 301 NEST K.ETTLEMAN LANE, LODI <br /> SAN JOAQUIN COUNTY <br /> ' The California Regional Water Quality Control Board, Central Valley Region, (Hereafter Board) finds <br /> that <br /> 1 The fornier Chevron Station #9-5775 at 301 West Kettleman Lane in Lodi was operated as a <br /> gasoline dispensing facility by Chevron Products Company until august 1998 The property%vas <br /> and is now owned by Ivern and Roger Baffont Therefore, the Chevron Products Company, and <br /> Ivern and Roger Bafforn, 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 morutoring wells(MW-1 through !-NlNV 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 Mer(µg11) of total petroleum hydrocarbons as gasoline(TPHg); <br /> • 6,800 µg/1 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 complete, 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 /> i1 March 2000 quarterly monitoring and samphng event, were found to contain up to: <br /> • 51,000 µg11 of TPHg; <br /> • 39,000 µg11 of benzene; <br /> • 720,000 µg/1 MtBE; <br /> • 18,000 µg/1 ETBE; and <br /> + 6,000 ttg/l 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 pumped-in 6 5 <br /> California Environmental Protection Agency <br /> ' Qa Fepcled Paper <br />