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GeologicafTechnics Inc. <br /> 2741 River Road <br /> 'Wodesto,caCfomia 95351 <br /> (209)538-6424/TFa.X#.5.38-5852 <br /> REPORT <br /> Groundwater Monitoring <br /> 1St Quarter 2001 <br /> Valentine (Castle Motors) <br /> 2315 N. El Dorado St. <br /> Stockton, CA <br /> Project No. 723.2 <br /> April 20, 2001 <br /> L0 EXECUTIVE SUMMARY <br /> e <br /> This report summarizes the 1" Quarter 2001 round of groundwater monitoring and testing <br /> that took place on March 16, 2001. The laboratory results indicate that detectable <br /> concentrations of the aromatic hydrocarbon compounds (BTEX) and gasoline range <br /> petroleum hydrocarbons (TPH-G) are present in all seven monitoring wells on site. <br /> The groundwater elevations increased approximately 1.17 feet since the December 4, 2000 <br /> monitoring event. Groundwater gradient calculations show that groundwater flow is NWE <br /> at 0.0041 ft/ft. This is consistent with past recorded directions that have been <br /> predominantly to the northeast. <br />