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PUBLIC HEALTH SERVIC'�SU I <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer .'`P.. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 9520 q<<FORc <br /> 209/468-3420 ILE . CoRy <br /> JEFF GRANBERRY <br /> SHELL OIL CO MAY 1999 <br /> PO BOX 8080 <br /> MARTINEZ CA 94553 <br /> RE: WATERLOO SHELL SITE CODE: 1760 <br /> 4315 WATERLOO ROAD <br /> STOCKTON CA 95205 <br /> In a letter dated March 12, 1999 Central Valley Regional Water iQuality Control <br /> Board (CVRWQCB) does not concur with the no further action determination of <br /> San Joaquin County Public Health Services Environmental Health Division <br /> (PHS/EHD) for the above-referenced site. A copy of the CVRWQCB letter is <br /> enclosed. <br /> PHS/EHD recommends installing at least one groundwater monitoring well <br /> downgradient of the former and current underground storage tank system at the <br /> site to investigate if there is petroleum hydrocarbon or oxygenate impact to <br /> groundwater. At least two consecutive"quarters of sampling is required. Submit <br /> this workplan to PHS/EHD by July.20, 1999. <br /> If you have any questions, please feel free to contact Jeffrey Wong at (209) 468- <br /> 0335. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> V 4 <br /> � v <br /> Jeffrey Wong, REHS Margaret Lagorio <br /> LOP/Site Mitigation Unit IV Supervisor <br /> c: RWQCB, Central Valley Region - Mark List <br /> c: Cambria - Joe Neely <br /> A Division of San Joaquin County Health Care Services <br />