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tftool <br /> San Joaquin County DIRECTOR <br /> O PouiN C Donna Heran,REHS <br /> )...,..= 1 ..0 Environmental Health Department ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla, REHS <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> Mike Huggins, REHS, RDI <br /> °4QL...:.� P Website: www.sjgov.org/ehd Margaret Lagorio, REHS <br /> Robert RES <br /> FOR Phone: (209)468-3420 Jeff Carlru slco, REHSHRDI <br /> Fax: (209) 464-0138 Kasey Foley, REHS <br /> July 27, 2009 <br /> T� <br /> Mr. James M. Langston X29 <br /> 15820 S. Harlan Rd. #33 <br /> Lathrop, CA 95330 <br /> Subject: Langston's Arco (former) ROM 0316 <br /> 15615 S. Seventh St. APN: 196-250-52 <br /> Lathrop, CA 95330 SWRCB-CUF #:0367 <br /> The State Water Resources Control Board (SWRCB) adopted Resolution #2009-0042 on <br /> May 19, 2009. This resolution directs the Regional Water Boards and LOP (Local <br /> Oversight Program) agencies that oversee the UST (underground storage tank) Clean Up <br /> Program to reduce quarterly groundwater monitoring requirements to semi-annual or less <br /> frequent monitoring at all sites unless site-specific needs warrant otherwise. <br /> The above subject site is currently listed with the San Joaquin County Environmental <br /> Health Department (EHD) LOP program. This letter is to inform you that per SWRCB <br /> resolution #2009-0042, you are to reduce sampling of all monitoring wells currently on a <br /> quarterly sampling schedule to the following schedule: <br /> • Monitoring wells MW-1 and MW-5 and dual phase wells DPE-1 and DPE-2 to <br /> semi-annual sampling for total petroleum hydrocarbons as gasoline (TPHg), <br /> benzene, toluene, ethylbenzene, total xylenes (BTEX), and methyl tert-butyl ether <br /> (MtBE) during the second and fourth quarters starting 2009. <br /> • The remaining monitoring wells are to be sampled biennially for the same <br /> constituents on the second quarter starting 2011. <br /> If you have any questions, please call Michael Infurna at (209)468-3454. <br /> iii��rGri �(/J �0 <br /> Michael J. Infurna Jr., REKS Mara te�Lawotrio, R <br /> 9 9 <br /> Senior Registered Environmental Health Specialist Program Coordinator <br /> C: Mr. James L. Barton, CVRWQCB, Underground Storage Tank Unit, 11020 Sun <br /> Center Drive, #200, Rancho Cordova, CA 95670-6114 <br /> Mr. Mark Owens, SWRCB, Division of Clean Water Programs, Underground <br /> Storage Tank Program, P.O. Box 944212, Sacramento, CA 94244-2120 <br /> Ms. Jan Hendricksen, 1416 Ironwood Place, Manteca, CA 95376 <br /> Ms. Ally Colavita, Advanced GeoEnvironmental Inc., 837 Shaw Rd., Stockton, CA <br /> 95215 <br />