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San Joaquin County
<br /> oP Environmental Health Department DIRECTOR
<br /> _ 1868 East Hazelton Avenue Linda Turkatte, REHS
<br /> N: { Stockton, California 95205-6232 PROGRAM COORDINATORS
<br /> Robert McClellon, REHS
<br /> Jeff Carruesco,REHS,RDI
<br /> Kasey Foley, REHS
<br /> Website: www.sjgov.org/ehd
<br /> Rodney Estrada, REHS
<br /> Phone: (209) 468-3420 Adrienne Ellsaesser, REHS
<br /> Fax: (209) 464-0138
<br /> January 29, 2015
<br /> Paul Canepa
<br /> Canepa's Car Wash Downtown
<br /> 642 N. Hunter St.
<br /> Stockton, CA 95202
<br /> Subject: Groundwater Monitoring Schedule Site Code: 1148
<br /> Canepa's Car Wash
<br /> 248 E. Park St.
<br /> Stockton, CA
<br /> By letter dated December 16, 2014, The San Joaquin County Environmental Health Department (EHD)
<br /> directed the implementation of a groundwater sampling schedule. EHD has determined that monitoring
<br /> wells MW-18 and MW-19 should be added to the schedule. MW-18 and MW-19 are shallow screened
<br /> wells (15-45 feet below surface grade) located within the contamination source area and are
<br /> incorporated into the Dual Phase Extraction remediation system.
<br /> The EHD directs the immediate implementation of the following groundwater sampling schedule:
<br /> • Biennially (approximately two-year intervals): MW-1, MW-3, MW-4, MW-6, and MW-7 (sample
<br /> the wells in rotation, one each semi-annual event);
<br /> • Annually (approximately one-year intervals): MW-8, MW-13, MW-15, and MW-16.
<br /> • Semi-annually (approximately six-month intervals): MW-2, MW-5, MW-9, MW-10, MW-11,
<br /> MW-12, MW-14, MW-17, MW-18, and MW-19.
<br /> At minimum, please have the groundwater samples analyzed the following chemicals: TPH-g, benzene,
<br /> toluene, ethylbenzene, and total xylenes (BTEX), tert-Amyl methyl ether (TAME), 1,2-dichloroethane
<br /> (1,2-DCA), and naphthalene.
<br /> If you have any questions concerning this letter, please contact Gabriel Gonzalez at (209) 468-3442, or
<br /> by email at gagonzalez@sjcehd.com.
<br /> Sincerely,
<br /> Gabriel Gonzalez, EHS Nuel Henderson, PG
<br /> Environmental Health Specialist Engineering Geologist
<br /> c: William R. Little, PG, Advanced GeoEnvironmental, Inc., 837 Shaw Road, Stockton, California
<br /> 95215
<br /> ec: GeoTracker
<br /> James L.L. Barton, PG, California Regional Water Quality Control Board Central Valley Region,
<br /> via GeoTracker
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