SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

Rainwater Car Wash2 27 October 2011 420 W. Yosemite Ave, Ma6ca San Joaquin County SJCEHD records show three underground storage tanks (USTs) and associated piping were removed in December 1998. Maximum USTs soil confirmation samples were total petroleum hydrocarbons as gasoline (TPHg), 8,000 milligrams per kilogram (mg/kg); benzene, 84 mg/kg, toluene, 650 mg/kg; ethylbenzene, 170 mg/kg; xylenes, 880 mg/kg; and methyl tert butyl ether (MTBE), 690 mg/kg. Thirteen groundwater monitoring wells, three groundwater extraction wells, ten soil borings and four cone penetrometer testing boring were completed from 1999 to 2010. Maximum soil borings results were TPHg, 390 mg/kg; TPH as Diesel (TPHd), 49 mg/kg; benzene, 1.1 mg/kg; toluene, 17 mg/kg; ethylbenzene, 8.5 mg/kg; xylenes, 51 mg/kg; and MTBE, 110 mg/kg. Maximum groundwater concentrations in February 2010 were TPHg, 28,000 micrograms per Liter (ug/L); benzene, 110 ug/L; toluene, 260 ug/L; ethylbenzene, 700 ug/L; xylenes, 1,590 ug/L; tertiary amyl methyl ether, 61 ug/L; and MTBE, 4,200 ug/L. You are currently out of compliance with regulatory directives, which may result in formal enforcement action with potential administrative civil liabilities (fines). However, Regional Water Board staff would prefer the opportunity to work cooperatively with you, to move this USTs case into compliance with future directives and eventually towards closure. We request that you meet with us at our office. In order to schedule the meeting, please contact me by 15 November 2011, by phone at (916) 464-4615 or by e-mail at ibarton(a)waterboards.ca.gov. A James L.L. Barton, P.G. Engineering Geologist UST Enforcement Unit II cc: ' Jennifer Jordan, State Water Resources Control Board, Sacramento Nuel Henderson, San Joaquin County Environmental Health Department, Stockton Tim Cuellar, Advanced Geo Environmental, Inc., 837 Shaw Rd., Stockton 95215