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GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> EscalTelephone: <br /> 09)8 -98881927 <br /> Telephone:(209)838-9888 <br /> Facsimile:(209)838-9883 <br /> SEP 0 4 2008 <br /> ENVIRONMENT HEALTH <br /> September 3,2008 <br /> PERMIT/SERVICES <br /> Mr. James L.L. Barton <br /> CA Regional Water Quality Control Board, <br /> Central Valley Region <br /> 11020 Sun Center Drive#200 <br /> Rancho Cordova, CA 95670 <br /> Subject: Third Quarter 2008 Groundwater Monitoring Report <br /> Gene Gabbard, Inc. 640 N. El Dorado Street, Stockton, CA 95202 <br /> RWQCB Case No. 391005 <br /> Dear Mr. Barton: <br /> This letter report presents the results of the third quarter 2008 groundwater monitoring and sampling <br /> activities at the subject site (Figure 1). <br /> 1.0 SITE ACTIVITIES <br /> Activities at the site included: <br /> • Monitoring for the presence of free product; <br /> • Monitoring water level elevations in all site wells; <br /> • Purging groundwater from wells MWI through MW4 and monitoring pH, temperature and electrical <br /> conductivity; <br /> • Collecting groundwater samples from wells MMI through MW4; <br /> • Analyzing groundwater samples for total petroleum hydrocarbons as gasoline, diesel, kerosene and <br /> motor oil (TPHg, TPHd, TPHk,TPHmo), for benzene,toluene, ethylbenzene and xylenes (BTEX), for <br /> fuel oxygenates [methyl-tert-butyl ether (MTBE), ethyl-tent-butyl ether (ETBE), di-isopropyl ether <br /> (DIPE), tert-amyl methyl ether (TAME), tert-butyl alcohol (TBA), ethanol, and methanol] and for <br /> lead scavenging fuel additives [1,2 dichloroethane(1,2-DCA) and ethylene dibromide (EDB)] <br /> G:\GROUNDZE\GABBARD\reports\QMR\20OMQM2008.doc <br />