Laserfiche WebLink
1 <br /> S qe0togical 7"echnics Inc, <br /> 1101 7`h Street <br /> Modesto,California 95354 <br /> ' (209)522-4119/Fax (209)522-4227 <br /> REPORT <br /> ' Groundwater Monitoring <br /> 4'h Quarter 2002 <br /> tJ.M. Equipment Company <br /> 1245 West Charter Way <br /> ' Stockton, California <br /> Project No 507 2 <br /> ' March 7, 2003 <br /> EXECUTIVE SUMMARY <br /> This report summarizes the results of the 4" Quarter 2002 groundwater monitoring and <br /> sampling event that took place on December 20 2002 For this event, the average <br /> groundwater elevation at the site was —11 05 feet mean sea level (msl) and the groundwater <br /> flow was N28'E at 0 004 ft/ft A vertical groundwater gradient calculation for wells MW-9 <br /> & 109 show that groundwater is flowing downward at a slope of 0 0055 ft/ft <br />' The analytical results of groundwater samples show that detectable concentrations of <br /> gasoline range hydrocarbons were present in six of the site's eleven groundwater <br /> monitoring wells The magnitude of the contamination in the wells is consistent with <br />' historical site data The fuel oxygenate compound MTBE was detected in six of the wells <br /> The Oxidation-Reduction Potential measurements show that eight of the monitoring wells <br /> are within the halo of reaction depleted water caused by biodegradation of the <br /> contamination plume <br /> 1 <br /> 1 <br />