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CalifornilVegional Water Quality Cool Board <br /> Central Valley Region <br /> Karl E.Longley,SCD,P.E.,Chair �`° <br /> Linda S.Adams 11020 Sun Center Drive 82O0,Rancho Cordova,California 956706114 Arnold <br /> Secretory for Phone(916)464-3291 •FAX(916)464-4645 Schwarzenegger <br /> Environmental http://www.waterboards.ca.gov/centralvalleyR�Er�n Governor <br /> Protection http://www.waterboards.ca.gov/centralvalleyREr <br /> 15 October 2008 0U 12 0 2008 <br /> ENVIROiOlEN t HEAL]H <br /> pERkIlP %jrr:�ldee Dhat <br /> Mr. Don Pratt, Environmental Business Manager Mr. Gurpre61 brig llNNs. p <br /> Atlantic Richfield Company 501 S. Cherokee Avenue <br /> P.O. Box 1257 Lodi 35240 <br /> San Ramon 94583 <br /> DOCUMENT REVIEW, ARCO #0760, 225 S. CHEROKEE LANE, LODI, <br /> SAN JOAQUIN COUNTY (REGIONAL BOARD CASE # 390330) <br /> 1 reviewed the Quarterly Groundwater Monitoring Report Third Quarter 2008 (Report), <br /> received 13 October 2008 from your consultant Stantec Consulting Corporation. The Report <br /> provides the results of the 14 July 2008 groundwater monitoring event, and requests that the <br /> Site be considered for closure. <br /> The Report also states the maximum groundwater concentrations were: Total Petroleum <br /> Hydrocarbons as gasoline (TPHg), 100 micrograms per Liter (ug/L); methyl tert-butyl ether <br /> (MtBE), 12 ug/L; and 1,2-dichloroethane, 1.3ug/L. <br /> Comment: <br /> Based on my review of the data for your Site over the last four quarters, I concur that the Site <br /> may satisfy the requirements for a low risk closure. During the Fourth Quarter of 2008, please <br /> prepare and submit a closure report using the closure criteria contained in the 16 April 2004 <br /> Tri- Regional Board Staff Recommendations for Preliminary Investigation and Evaluation of <br /> Underground Tank Sites, which may be downloaded off the Internet from our website at <br /> http://www.waterboards.ca.gov/centraIvalley/water_issues/u nderg rou nd_storage_tanks/. <br /> If you have any questions, please call me at (916) 464-4615 or email me at <br /> jbarton@waterboards.ca.gov. <br /> James L. L. Barton, P.G. <br /> Engineering Geologist <br /> cc: Ms. Margaret Lagorio, San Joaquin County Environmental Health Department, Stockton <br /> Mr. Roger Clark, Stantec Consulting Corporation, 3017 Kilgore Road, Suite 100, <br /> Rancho Cordova 95670 <br /> California Environmental Protection Agency <br /> 0a Recycled Paper ' <br />