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San Joaquin County <br /> Environmental Health Department DIRECTOR <br /> Donna Heran , REHS <br /> _ 600 East Main Street <br /> V —,IStockton , California 95202 -3029 PROGRAM COORDINATORS 17" T Robert McClellan , REHS <br /> I Lam. Jeff Carruesco, REHS, RDI <br /> Website: wwwsjgov. org/ehd Kasey Foley, REHS <br /> i F o R Linda Turkatte, REHS <br /> Phone : (209) 468-3420 <br /> Fax: (209) 464-0138 <br /> March 23, 2012 <br /> Mr. Remo Canepa <br /> Canepa's Car Wash <br /> 1536 North Hunter <br /> Stockton , California 95204-5915 <br /> Subject: Canepa ' s Car Wash <br /> 6230 Pacific Avenue <br /> Stockton, California 95207-3712 <br /> Dear Mr. Canepa : <br /> The San Joaquin County Environmental Health Department ( EHD) has reviewed the <br /> historical groundwater analytical results in preparation of the groundwater monitoring and <br /> sampling event scheduled for today by your consulting firm , Advanced GeoEnvironmental , <br /> Inc . (AGE) . <br /> The EHD approves the semi-annual sampling of soil vapor extraction well SV-4 and <br /> monitoring wells MWA through MW-4. Groundwater samples should be analyzed for total <br /> petroleum hydrocarbon as gasoline (TPH-g ) ; benzene , toluene , ethylbenzene and total <br /> xylenes ( BTEX) ; 1 , 2-dichloroethane ( 1 , 2-DCA) , 1 , 2-dibromoethane ( EDB) ; and <br /> oxygenates: methyl tertiary-butyl ether (MTBE ) , ethyl tertiary-butyl ether ( ETBE) , tertiary- <br /> amyl methyl ether (TAME) , di-isopropyl ether ( DIPE) and tertiary-amyl alcohol (TBA) . <br /> Suspend sampling monitoring wells MW-5 , MW-6 , MW-7 , MW-9, MW-10 , MW- 11 and <br /> MW- 12D unless analytical data from MW- 1 through MW-4 and SV-4 suggest that the <br /> dissolved plume has become unstable or migrating . Continue to collect depth-to-water <br /> measurements from every well to establish the groundwater gradient. <br /> If you have any questions , please contact Vicki McCartney at (209) 468-9852 or by email <br /> at vmcca tneyCo sicehd . corn . <br /> Sincerely , <br /> Victoria L . McCartney , REHS Nuel C . Henderson , Jr , PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: Mr. Arthur E . Deicke Jr. , Advanced GeoEnvironmental , Inc. , 837 Shaw Road , <br /> Stockton , California 95215 <br /> Mr. Jaynes L . L Barton , PG , California Regional Water Quality Control Board Central <br /> Valley Region , 11020 Sun Center Drive , Suite 200 , Rancho Cordova , California 95670 <br />