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1 <br /> GROUND ZERO ANALYSIS, INC. M0 [ECOVEU <br /> 1714 Main Street AUG 15 2002 <br /> Escalon, California 95320-1927 ENVIRONMENT HEALTH <br /> 'Telephone (209)838-988$ <br /> Facsimile (209)838-9883 PERMIT/SERVICES <br /> August 5, 2002 <br /> Mr Jeff Wong <br /> San Joaquin County <br /> Environmental Health Department <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Subject Second Quarter Groundwater Monitoring and Sampling Report, <br /> Speedy Mart, 8200 N Highway 99, Morada, CA <br /> Dear Mr Wong <br /> i <br /> This letter report summarizes the Second Quarter 2002 groundwater monitoring and sampling <br /> activities at the subject site(Figure 1) <br /> 1.0 SITE ACTIVITIES <br /> Activities at the site included removing free product from well MW I, monitoring groundwater levels in <br /> all site wells, and purging and sampling groundwater from wells MW2 through MW913 <br /> 2.0 FIELD WORK <br /> 2.1 Free Product Measurement and Recovery <br /> As an interim remedial action, Ground Zero is actively baihng product from well MW 1 Since August <br /> 16, 2001, a total of approximately 59 5 gallons of product/water mixture has been extracted by <br /> manually bailing the well and transferring the liquid into a Department of Transportation (DOT) <br /> approved storage container <br /> A Ground Zero technician measured free product thickness and removed approximately 16 gallons of <br /> product/water mixture from well MWl during the reporting period The product thickness vaned <br /> between 0 02 feet to 0 22 feet between April 8 and June 13, 2002 The waste is being managed <br /> pursuant to 49 CFR part 172 and 40 CFR part 262 Table 1 summarizes product thickness <br /> measurements and volumes removed Field notes are included in Attachment A <br /> G1Data1GROUNDZEITULEBURG\Rrpoits\QMR12QM2002 doc <br />