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1 <br /> GeorogicaiTechnk_s inc. <br /> 2741 fiver 929ad <br /> gfadesto,Carfomw 95351 <br /> 6 <br /> (249)538-6424/'Fa,,#538-5852 <br /> ' REPORT <br /> Groundwater Monitoring <br /> ' 1" Quarter 2001 <br /> ' Marci Property <br /> 2969 Loomis Road <br /> Stockton, CA <br /> Project No 770 2 <br /> Apnl 11, 2001 <br /> 1 <br /> C <br /> ' EXECUTIVE SUMMARY <br /> The site's seven groundwater monitoring wells are monitored and sampled on a quarterly <br /> schedule This report summarizes the I` Quarter 2001 round of groundwater monitoring <br /> and testing that took place on March 15, 2001 <br /> ' The analytical results from the wells indicate that detectable concentrations of diesel range <br /> petroleum hydrocarbons are present in four of the seven wells BTEX was detected in two <br /> of the groundwater wells <br /> Oxidation-Reduction Potential measurements show that four out of the seven monitoring <br /> ' wells are within the reaction depleted water caused by biodegradation of the contamination <br /> plume <br /> ' The average depth to groundwater at the site was 56 16 feet bgs Groundwater gradient <br /> calculations show that groundwater flow was S 18°W with a slope of 0 0019 ft/ft Based on <br /> ' a previous consultant's data, this site has a history of variable groundwater flow direction <br /> GTI's computed direction for this third consecutive event confirms that groundwater <br /> direction varies from quarter to quarter at the site <br /> i <br />