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I <br /> ADVANCE SOIL TECHNOLOGY, INC. <br />' Contamination Monitoring Well Sod Foundation&Geological Services <br /> 12340 S Saratoga-Sunnyvale Rd Unit 4,Saratoga,CA 95070 {408)446-0809 FAX(408)446-0349 <br /> 1 <br />' GROUNDWATER MONITORING <br /> FIRST QUARTER 1994 <br /> 2420 GRANT LINE ROAD <br /> TRACY, CALIFORNIA <br />' 1.0 INTRODUCTION <br />' The following report presents the results and procedures utilized <br /> in monthly groundwater level monitoring and quarterly sampling of <br /> the groundwater from the existing monitoring wells at the sub3ect <br /> property located at 2420 Grant Line Road in Tracy, California. <br />' The groundwater data collection and sampling has been conducted in <br /> compliance with San Joaquin County Public Health Services and other <br /> regulatory agencies overseeing these reports. <br /> Groundwater data collection was performed each month and <br /> groundwater samples were collected on April 13 , 1994 from the <br />' <br /> existing three-2" diameter PVC monitoring wells, as shown in Figure <br /> 2 of this report. <br />' The monthly groundwater levels and relevent data are presented in <br /> Table III of this report. <br />' 2 . 0 GROUNDWATER MONITORING WELLS <br /> I <br />' 2 . 1 SAMPLING <br /> At present, there are three monitoring wells at the locations shown <br />' in Figure 2 of this report. The existing wells are all 211-diameter <br /> PVC wells. These wells are completed in the first aquifer <br /> encountered at the site. <br />' The sub3ect wells were developed and sampled on April 13 , 1994 . <br /> Prior to purging and sampling, water levels were measured in the <br />' wells, utilizing Electronic Tape which measures the static fluid <br /> level in one immersion. All existing wells were purged at least 5 <br /> casing volumes, prior to sampling. <br /> 1 <br />