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Geofiogica[TechnW" s Inc. <br /> 2741 RzveY Road ` i �''U 27 r 7 l <br /> 12 48 <br /> Modesto,C4Crfomw 95351 <br /> (209)538-6424ITaX,#538 5852 <br />' REPORT <br /> Groundwater Monitoring <br />' 2°d Quarter 2001 <br /> Morita Brothers <br /> 814 E. Charter Way <br /> Stockton, CA <br /> Project No 724 2 <br /> August 20, 2001 <br /> EXECUTIVE SUMMARY <br /> This report summarizes the 2°d Quarter 2001 round of groundwater monitoring and testing <br />' that took place on June 21, 2001 This is the third monitoring event since the five new <br /> monitoring wells were installed on November 20-22, 2000 The laboratory analyses <br /> indicate that four of the ten monitoring wells on this site continue to be impacted by <br />' gasoline range petroleum hydrocarbons The groundwater contamination plume appears to <br /> have migrated off site to well MW-106 The contamination is present in well MW-106 at a <br />' depth of approximately 23 feet below the water table <br /> The oxygenated fuel compound MTBE was detected in wells MW-106 and MW-107 at 7 6 <br /> and 32 µg/l, respectively <br /> The groundwater level has decreased approximately 0 47 feet since the March 2001 <br />' monitoring event Groundwater gradient calculations show that groundwater flow is S83°E <br /> at 0 0012 ft/ft <br /> 1' <br />