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ENVIRONMENTAL HEALTH� EPARTMENT <br /> SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heron,R.E.H.S. Carl Borgman,R.E.H.S. <br /> 304 East Weber Avenue, Third Floor <br /> w. � ' - Director Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> 6Foa`' Laurie A.Cotulla,R.E.H.S. RobertMcClellon,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. <br /> MABEL KEIR OCT 2 6 2004 <br /> 1103 GRANTLINE CT <br /> MODESTO CA 95330 <br /> RE: Lopez Properties SITE CODE: 0001525 <br /> 1601 Turnpike <br /> Stockton, CA 95206 <br /> By letter dated October 20, 2004, Donna Sexton at Advanced GeoEnvironmental, Inc. (AGE) <br /> notified San Joaquin County Environmental Health Department (EHD)that Mabel Kier has <br /> retained AGE to perform site assessment and remediation at the above-referenced site. <br /> Fieldwork will commence on November 2,2004 with the installation of three monitoring <br /> wells following Revised Work Plan, Monitoring Well Installation, prepared by Kleinfelder, <br /> Inc. on August 26, 2004, and approved by EHD on September 16, 2004. <br /> EHD approves AGE's recommendation that soil and groundwater samples be analyzed for <br /> benzene, toluene, ethyl benzene, and total xylenes (BTEX)by United States Environmental <br /> Protection Agency(EPA) SW-846 Method 8260B instead of EPA SW-846 Method 8020. <br /> EHD also approves the additional soil and groundwater analyses for total lead by EPA <br /> SW-846 Method 6010, and geophysical analyses for selected soil samples. AGE <br /> recommended that soil and groundwater samples be analyzed for 1,2-dichloroethane (1,2- <br /> DCA). By letter dated September 16, 2004, EHD approved the soil and groundwater <br /> analyses for 1,2-DCA by EPA SW-846 Method 8260B and requested that 1,2-DCA and 1,2- <br /> dibromoethane (EDB)be reported at 0.5 micrograms per liter(µg/L) for groundwater <br /> samples, if possible. <br /> If you have any questions,please contact Vicki McCartney at(209) 468-3456 or by <br /> electronic mail at vmccartney@sjcehd.com. <br /> Donna Heran, RENS, Director <br /> Environmental Health Department <br /> Vicki McCartney,RE-HS Margare Lagorio, REHS <br /> LOP/SiteMitigation Unit ItV Supervisor/LOP/SiteMitigation Unit IV <br /> c: James L.L. Barton- CVRWQCB <br /> Donna Sexton-AGE <br />