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F� GROUND ZERO ANALYSIS, INC. <br /> 1714 Main, Street [1 _ , <br /> Vv_ <br /> Escalon, California 95320-1927 �' �8 <br /> Telephone: (209)838-9888 <br /> Facsimile: (209)838-9883 <br /> July 5, 2002 <br /> Ms. Margaret Lagorio <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject: _ Verification Groundwater Sampling Report <br /> Former Valley Volkswagen, 647 E. Miner Ave., Stockton, CA (Figure 1) <br /> Site Code: 1187 <br /> . Dear Ms. Lagorio: <br /> i <br /> Ground Zero Analysis, Inc. (Ground Zero) is submitting this groundwater sampling report for the <br /> above referenced site on behalf of Mr. Jay Friedman. This report documents the most recent <br /> groundwater quality data for the site. This verification sampling event was performed as directed by <br /> San Joaquin County Public Environmental Health Department (EHD) in correspondence dated <br /> September 14, 2001. In phone conversations in November 2001 Regional Water Quality Control <br /> Board (RWQCB) and EHD indicated that two additional monitoring and sampling events would be <br /> required prior to considering the site for closure. These have now been completed. <br /> SITE ACTIVITIES <br /> Activities at the site included monitoring water level elevations and purging and sampling <br /> groundwater from both site monitoring wells (Figure 2). Groundwater samples were analyzed for <br /> total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, total xylenes <br /> (BTEX), gasoline oxygenate additives, ethylene dibromide (EDB) and 1,2 dichloroethane (1,2 <br /> DCA). In addition, drummed drill cuttings were transported offsite for disposal. <br /> FIELDWORK <br /> Groundwater Monitoring and Sampling <br /> On June 25, 2002, depth to water was measured in monitoring wells NMI and MW2. Groundwater <br /> IIGZA_FS\S YS011Data1GRDUNDZEIVALLEYV WIQMR12QM2002.doc <br />