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California&gional Water Quality C rol Board ^ Central Valley Region Katherine Hart, Chair Linda S.Adams Acting Secretary for 11020 Sun Center Drive#200, Rancho Cordova,California 95670-6114 Edmund G. Brown Jr. Environmental Protection Phone(9 16)464-3291 •FAX(916)4644645 Governor http://www.waterboards.ca.gov/centralvalley 19 July 2011 RECEIVED Certified Mail JUL 21 2011 Certified Mail 7010 0290 0000 8536 0386 ENVIRONMENTAL HEALTH 7010 0290 0000 8536 0393 PERMIT/SERVICES Mohamed and Huda Gubary Munir Obiad, et al 4228 Green Knoll Road 23569 S. Santa Fe Rd. Salida, CA 95368 Riverbank, CA 95367 Certified Mail Certified Mail 7010 0290 0000 8536 0409 7010 0290 0000 8536 0416 Durhim Ali Jubari Nagi Saleh-Ali 667 O'Ferrell St., #10 P.O. Box 1322 San Francisco, CA 94109 Riverbank, CA 95367 LEAD AGENCY STATUS, AND REQUEST FOR MEETING, RANCH MARKET, 23569 S. SANTA FE ROAD, RIVERBANK, SAN JOAQUIN COUNTY(RB CASE#390609) In a letter dated 13 July 2011, the San Joaquin County Environmental Health Department (SJCEHD) referred the lead agency for the above case to the Regional Water Quality Control Board (Regional Water Board) for non-compliance with their directives. In September 2007, the SJCEHD approved a work plan to delineate the extent of the plume. The investigation was completed in August 2008; however, the report has not been submitted to date. In addition, groundwater has not been monitored for over.two years, and the last monitoring report was submitted in January 2009. Multiple attempts by SJCEHD to contact the responsible parties have been reported to this agency as unsuccessful to date. SJCEHD records show three underground storage tanks (LISTS) were removed in May 1991. Maximum LISTS soil confirmation samples were total petroleum hydrocarbons as gasoline (TPHg), 4,700 milligrams per kilogram (mg/kg); benzene, 10 mg/kg; toluene, 210 mg/kg; ethylbenzene, 86 mg/kg; and xylenes, 604 mg/kg. The water samples for a domestic well (DW-2) located at the adjacent property reported methyl tert butyl ether (MTBE) at 38 micrograms per Liter (ug/L) in October 1999 and MTBE, 58 ug/L in November 1999. The site domestic well (DW-1) was sampled in August 2000 and failed the drinking water standards for nitrate and nitrite/nitrate. DW-1 and DW-2 were destroyed and a replacement domestic well (DW-1 R) was installed to serve the site and adjacent residence by January 2001. On 8 December 1999, the Regional Water Board Chief of Site Cleanup, acting on behalf of the Executive Officer, issued a Water Code Section 13267 Order requiring alternative supply of potable water to the users of the impacted domestic well, submittal of a monitoring well installation report, and submittal of reports of quarterly groundwater monitoring. On 18 August 2000, Regional Water Board staff (Staff) requested a Corrective Action Plan, and on 25 September 2000 Staff approved a feasibility study testing work plan for soil vapor extraction (SVE) and air sparging. On 26 March 2001, the Final California Environmental Protection Agency ZaRecycled Paper