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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 COMPAN`j' <br />IVERN AND ROGER BAFFONI <br />AT <br />301 WEST KETTLEMAN LANE, LOM <br />SAN JOAQUIN COUNTY <br />The California Regional Water Quality Control Board, Central Valley Region, (liereafter Board) finds <br />that: <br />1. The former Chevron Station #9-5775 at 301 West Kettleman Lanz 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 Ivern and Roger Baff'oni. Therefore, the Chevron Products Company, and <br />Ivern and Roger Baf oni, 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 monitoring wells (MW -1 through "INf '-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 (14/1) 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/l 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 completes, 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/1 ofTPHg <br />• 39,000 µg/1 of benzene; <br />• 720,000 µg/1 MtBE; <br />• 18,000 µg/1 ME, and <br />• 6,000 µg/1 TAME. <br />2000 Chevron's consultan Gettler R Incorporated GR started weekl <br />4. do 24 March >; yan rp { ) y <br />pumping at extraction well EX -1. Approximately 300 gallons of groundwater was pumped"m 6.5 <br />California Environmental Frolectlon Agency <br />n ita0cw PAW <br />