Laserfiche WebLink
GROUND ZERO ANALYSIS, INC. <br />.) 1714 Main Street <br /> F-scalon,California 95320-1927 <br /> Telephone (209)838-9888 <br /> Facsimile (209)838-9883 <br /> February 8,2005 "FQ8 <br /> Ms Lori Duncan FFB p� N80 <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Fourth Quarter 2004 Groundwater Monrtonng Report <br /> 640 N El Dorado Street, Stockton, California <br /> Dear Ms Duncan <br /> This letter report presents the results of the fourth quarter 2004 groundwater monitoring and sampling <br /> activities at the subject site (Figure 1) <br />�l <br /> 10 SITE ACTIVITIES <br /> Activities at the site included <br /> I <br /> Removing free product from well MW3, <br /> Monitoring water level elevations in all site wells, <br /> Purging groundwater from wells MW1 through MW7 and monitoring pH, temperature and electrical <br /> conductivity, <br /> Collecting groundwater samples from wells MW1 through MW7, <br /> Analyzing groundwater samples volatile organic compounds (VOCs), including oxygenated gasoline <br /> additives <br /> 2.0 FIELD WORK <br /> 21 Free Product Measurement and Recovery <br /> A Ground Zero technician measured and removed free product from well MW3 periodically during the <br /> reporting period The thickness of measured product during the reporting period ranged from a high of 0 14 <br /> feet on November 1, 2004 to a low 0 01 feet on November 15, 2004 The average thickness of measured <br /> product during the reporting period was 0 07 feet Approximately 3 83 gallons of product and product/water <br /> mixture was removed from well MW3 during the reporting period utilizing a passive skimmer and by <br /> manually bailing the product from the well, including 1 1 liters of oil from the skimmer <br /> G IGROUNDZEIGABBARDVeports\QMR1200414QM2004 doc <br />