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San Joaquin County DIRECTOR <br /> Donna Heran,REHS <br /> P <br /> Environmental Health Department <br /> ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla,REHS <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Mike Huggins,REHS, RDI <br /> Margaret Lagorio,REHS <br /> Website: www.sjgov.org/ehd Robert McClellon,REHS <br /> Phone: (209)468-3420 Jeff Carruesco,REHS, RDI <br /> Fax: (209)464-0138 Kasey Foley,REHS <br /> June 1, 2009 <br /> Denis L. Brown <br /> Shell Oil Products <br /> 20945 S. Wilmington <br /> Carson, CA 90810-1039 <br /> Subject: Shell Station <br /> 4315 Waterloo Road <br /> Stockton, CA <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Groundwater <br /> Monitoring Report — First Quarter 2009 dated May 7, 2009, prepared by Conestoga-Rovers & <br /> Associates for the above subject site and provides the following comments. <br /> The State Water Resources Control Board passed a resolution on May 19, 2009, that includes a <br /> resolve that quarterly monitoring at underground storage tank cleanup sites be reduced to semi- <br /> annual or less frequent unless warranted. Therefore, the sampling of monitoring wells MW1 <br /> and MW5 can. be reduced to a semi-annual frequency. Monitoring wells MW2, MW3, MW4, <br /> MW6 and MW7 as previously recommended by the EHD and agreed to by Shell will be sampled <br /> annually. <br /> If you have any questions, please contact me at (209) 468-3449. <br /> -rr.o-'� -t av— <br /> Margaret Lagorio, REHS <br /> Program Coordinator <br /> Cc: James Barton, CVRWQCB <br /> Tom Sparrowe, Conestoga-Rovers, 19449 Riverside Drive, Ste 230, Sonoma, CA 95476 <br /> William Norby, 4315 E. Waterloo Rd., Stockton, CA 95215 <br /> i <br /> i <br />