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MAR 1 5 2004 <br /> GROUND ZERO ANALYSIS, INC. <br /> ENV11=toiVIVIFNT HEALTH <br /> 1714 Main,Street PERMItSERVCES <br /> Escalon,California 95320-1927 <br /> Telephone (209)838-9888 <br /> Facsimile (209)838-9883 <br /> IMarch 12, 2004 <br /> Mr Michael Infurna <br /> San Joaquin County <br /> Environmental Health Department <br /> I 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Monitoring Well Installation and 4th Quarter Groundwater Sampling Report <br />' Former Harry's Auto Mart, 2662 N Wilson Way, Stockton, CA(Site Code 1306) <br />' Dear Mr Infurna <br /> lie <br /> This report summarizes activities at the subject site during the fourth quarter of 2003 Activities <br /> conducted during the reporting period included reconnaissance to physically locate water supply <br /> wells near the site, installing monitoring wells MW1D, MW5 through MW7, collecting and <br />' analyzing soil samples from wells MW5 through MW7, monitoring depth to water in all site wells, <br /> purging and sampling wells MW1 through MW7 and U-Haul MW7, and analyzing groundwater <br /> samples for benzene, toluene, ethylbenzene, total xylenes (BTEX), total petroleum hydrocarbons as <br />' gasoline (TPHg), and gasoline additives The site location is shown on Figure 1 <br /> 1.0 INTRODUCTION <br /> 1 <br /> 1.1 Purpose <br />' The purpose of the additional subsurface investigation was to further evaluate the extent of <br /> groundwater impact on the property The additional water supply well survey was conducted to <br />' determine if any wells not documented on public accessible databases existed near the site <br /> Groundwater monitoring and sampling occurs on a quarterly basis <br />' 1.2 Resources <br /> Sean Garvey, a Ground Zero Analysis Inc (Ground Zero) geologist, directed drilling and well <br />' construction activities on November 18, 2003 through November 20, 2003 V&W Drilling (C-57- <br /> 720904) performed drilling, monitoring well installation and well development services Anthony <br /> • Scoma,a Ground Zero technician,monitored, developed and sampled the monitoring wells <br /> 1 <br />' 11GZA_FSIVOL_I\DATAIGROUNDZEI14ARRYSIReports1We11 Report2 doe <br />