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r1r h <br /> GROUND ZERO ANALYSIS, INC. <br /> 1714 Main Street <br /> Escalon, California 95320-1927 <br /> Telephone (209)838-9888 <br /> )Facsimile (209)838-9883 <br /> August 22, 2002 <br /> Ms Lori Duncan <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Second Quarter 2002 Groundwater Monitoring Report <br /> 640 N El Dorado Street, Stockton, California <br /> Dear Ms Duncan <br /> This letter report presents the results of the second quarter 2002 groundwater monitoring and sampling <br /> activities at the subject site (Figure 1) <br /> SITE ACTIVITIES <br /> Activities at the site included removing free product from well MW3, monitoring water level elevations <br /> in all site wells, purging and sampling groundwater from site wells, analyzing groundwater samples for <br /> oxygenated gasoline additives and volatile organic compounds (VOCs), and disposing of wastewater <br /> stored at the site <br /> FIELD WORK <br /> Free Product Measurement and Recovery <br /> A Ground Zero technician measured and removed free product from well MW3 on eight separate <br /> occasions during the reporting period The thickness of measured product averaged 0 45 feet <br /> during the reporting period Approximately 8 gallons of product/water mixture was removed from <br /> well MW3 during the reporting period by manually bailing the product from the well, and <br /> transferring into 5-gallon drums The waste is being stored according to 49 CFR part 172 and 40 <br /> CFR part 262 Table 1 summarizes product thickness measurements and volume removed Field <br /> notes associated with product bailing, including a chart showing the measured product thickness <br /> over time, are included in Attachment A <br /> G1Data1GROUI\rDZE1GABBARDVeports12QM2002 doc <br />