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40 <br /> ENVIRONiVIENTAL HEALTH DEPARTMENT <br /> Ppu N SAN JOAQUIN COUNTY <br /> Donna K. Heran, R.E.H.S. <br /> 304 East Weber Avenue,Third Floor Unit Supervisors <br /> Director Carl Borgman,R.E.H.S. <br /> ,`• AI Olsen, R.E.H.S. Stockton,California 95202-2708 Mike Huggins, R.E.H.S., R.D.I. <br /> c9:.FpQN�P Program Manager Telephone: (209)468-3420 Douglas W. Wilson,R.E.H.S. <br /> Laurie A. Cotulla, R.E.H.S. Margaret Lagorio,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Robert McClellon, R.E.H.S. <br /> Website:www.sjgov.org/ehd/ Jett Carruesco, R.E.H.S. <br /> DARIN ROUSE <br /> CHEVRON PRODUCTS COMPANY NOV 3 0 2005 <br /> P 0 BOX 6012 <br /> SAN RAMON CA 94583-2324 <br /> RE: Chevron Service Station 9-2033 <br /> 508 Charter Way <br /> Stockton, California <br /> San Joaquin County Environmental Health Department (EHD) has reviewed analytical <br /> results for groundwater samples collected during the quarterly monitoring events of 2004 <br /> and the first and second groundwater monitoring events of 2005 at the above-referenced <br /> site submitted on your behalf by Secor International Incorporated (Secor). EHD <br /> concludes that the entire suite of Method 8260 compounds and selected metals need not <br /> be reported for groundwater samples collected from monitoring well MW-1. Instead <br /> please report total petroleum hydrocarbons as gasoline (TPH-g); total petroleum <br /> hydrocarbons as diesel (TPH-d); benzene, toluene, ethyl benzene, total xylenes, (BTEX); <br /> di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), methyl tertiary-butyl ether <br /> (MTBE), tertiary-amyl methyl ether (TAME), tertiary butyl alcohol (TBA), methanol, <br /> ethanol, 1,2-dichloroethane (1,2-DCA), and 1,2-dibromoethane (EDB) for groundwater <br /> samples collected from MW-1, MW-2, and MW-3 beginning first quarter 2006. Report <br /> 1,2-DCA and EDB at 0.5 micrograms per liter (gg/L) in groundwater samples, if <br /> possible. <br /> If you have any questions regarding this letter, please contact Vicki McCartney at (209) <br /> 468-3456, or by electronic mail at vmccartney@sjcehd.com. <br /> Donna Heran,REHS, Director <br /> Environmental Health Department <br /> Victoria L. McCartney, Senior REHS Nuel C. Henderson, Jr., PG <br /> Unit IV-Site Mitigation Unit IV- Site Mitigation <br /> c: George Forsythe, PG- Secor <br /> James L.L. Barton,PG- CVRWQCB <br />