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1 <br />' GROUND ZERO ANALYSIS, INC. " ` ;� ; <�t"�`i'r'IN.Ic -�11 <br /> �1 <br /> 1714 Mam Street 04 JUN6 <br />' Fscalon, California 95320-1927 <br /> Telephone (209)838_9$88 <br /> Faesunile (209)838-9883 <br /> 1 <br />' May 28,2004 <br />' Mr Jeff Wong <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> t Subject Fourth Quarter 2003 Groundwater Monitoring and Sampling Report <br /> Speedy Mart, 8200 N Highway 99,Morada, CA <br /> Dear Mr Wong <br /> This letter report summarizes the Fourth Quarter 2003 groundwater monitoring and sampling activities <br /> at the subject site Figure 1 presents a site vicinity map <br />' 1.0 SUMMARY OF SITE ACTIVITIES <br /> Activities at the site included the following <br />' Periodic monitoring and removal of free product from well MW 1, <br /> • Installation, startup, and operation of an interim groundwater extraction and treatment system, <br />' Drilling and installing additional site wells, <br /> • Developing and sampling newly installed groundwater monitoring wells, <br /> • Conducting a vapor extraction pilot test, <br />' Conducting routine quarterly groundwater monitoring and sampling of site wells, <br /> • Collecting groundwater samples from nearby domestic wells <br /> 2.0 FREE PRODUCT MONITORING AND RECOVERY <br />' As an interim remedial action, Ground Zero has been monitoring and removing product from well <br /> MWi <br /> Between August 16, 2001 and December 31, 2003 approximately 180 gallons of product/water mixture <br /> has been extracted by either manually bailing the well, or through the operation of a passive skimmer <br /> All product/water mixture manually removed was transferred into a properly marked DOT-approved <br />' 55-gallon drums in accordance with 49 CFR part 172 and 40 CFR part 262 and eventually disposed of <br /> by a licensed hazardous waste facility/recycler <br />' G IGROUNDZEITULESURGIReportslQMR1200314QM2003 doe <br />