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<br />Californiq#egional Water QualityC101,trol Board -
<br />Central Valley Region
<br />Katherine Hart, Chair
<br />Linda S. Adams 11020 Sun Center Drive #200, Rancho Cordova, California 95670-6114 own Jr
<br />Acting Secretary for Phone (916) 464-3291 • FAX (916) 464-4645 Governor
<br />Environmental Protection http://www.waterboards.ca.gov/centralvalley JUN 06 2011
<br />2 June 2011
<br />EWRONMENTAL HEALTH
<br />Certified Mail Certified Mail PERMIT/SERVICES
<br />7010 0290 0000 8536 0270 7010 0290 0000 8536 0287
<br />Ralph Lee White
<br />2201 East Eighth Street
<br />Stockton, CA 95206
<br />Peter Bui & Kimberly Hoang
<br />4004 Maddie Circle
<br />Stockton, CA 95209
<br />LEAD AGENCY STATUS, AND REQUEST FOR MEETING, RALPH'S SQUARE,
<br />2122 AIRPORT WAY, STOCKTON, SAN JOAQUIN COUNTY (RB CASE# 390995)
<br />In a letter dated 11 May 2011, the San Joaquin County Environmental Health Department (SJCEHD)
<br />referred the lead agency for the above case to the Regional Water Quality Control Board (Regional
<br />Water Board) for non-compliance with directives. In December 2008, the SJCEHD approved a work
<br />plan to delineate the extent of the plume; however, the work has not been completed to date. In
<br />addition, groundwater has not been monitored for over two years and the last monitoring report for the
<br />15 October 2008 monitoring event has not been submitted. A meeting with SJCEHD on 25 April 2011
<br />did not result in an agreement to proceed with the directed work.
<br />SJCEHD records show three underground storage tanks (USTs) were removed in October 1997.
<br />Maximum USTs soil confirmation samples were total petroleum hydrocarbons as gasoline (TPHg),
<br />1,900 milligrams per kilogram (mg/kg); toluene, 28 mg/kg; ethylbenzene, 13 mg/kg; xylenes, 82 mg/kg;
<br />and methyl tert butyl ether (MTBE), 18 mg/kg. Eleven groundwater monitoring wells, one soil boring
<br />and one cone penetrometer testing boring were completed from 2002 to 2007. Maximum soil borings
<br />results were TPHg, 6,100 mg/kg; benzene, 6.2 mg/kg; toluene, 89 mg/kg; ethylbenzene, 68 mg/kg;
<br />xylenes, 510 mg/kg; and MTBE, 40 mg/kg. Maximum groundwater concentrations in April 2008 were
<br />TPHg, 45,000 micrograms per Liter (ug/L); benzene, 610 ug/L; toluene, 3,100 ug/L; ethylbenzene,
<br />1,000 ug/L; xylenes, 16,000 ug/L; 1, 2-dichlorethane, 18 ug/L; tertiary amyl methyl ether, 11 ug/L; and
<br />MTBE, 16,000 ug/L.
<br />You are currently out of compliance with regulatory directives, which may result in formal enforcement
<br />action with potential administrative civil liabilities (fines). However, Regional Water Board staff would
<br />prefer the opportunity to work cooperatively with you, to move this USTs case into compliance with
<br />future directives and eventually towards closure. We request that you meet with us at our office. In
<br />order to schedule the meeting, please contact me by 15 June 2011, by phone at (916) 464-4615 or by
<br />e=mail at ibarton(E�waterboards.ca.gov.
<br />James L.L. Barton, P. G.
<br />Engineering Geologist
<br />UST Enforcement Unit II
<br />cc: Jennifer Jordan, State Water Resources Control Board, Sacramento
<br />Adrienne Ellsaesser, San Joaquin County Environmental Health Department, Stockton
<br />California Environmental Protection Agency
<br />C17 Recycled Paper
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