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5 <br /> t� f/ <br /> 1 <br /> • GROUND ZERO ANALYSIS, INC. <br /> Ma <br /> Esca ni <br /> Street nDn <br /> Escalon, California 95320-1.927 �J <br /> Telephone (209) 838-9888 <br /> Facsimile (209) 838-9ss3 MAY 0 1 2003 <br /> ENVIRONMENT HEALTH <br /> Ap171.128, 2003 PERMIT/SERVICES <br /> U� <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 First 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 First Quarter 2003 groundwater monitoring and sampling <br /> activities at the subject site Figure 1 presents a site vicinity map <br /> 1.0 SITE ACTIVITIES <br /> Activities at the site included removing free product from well N1Wl, monitoring groundwater <br /> levels in all site wells, disposing of liquid waste generated from the wells, and purging and <br /> 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 bailing product from well MW1 Since <br /> August 16, 2001, a total of approximately 123 gallons of product/water mixture has been <br /> extracted by manually bailing the well and transferring the liquid into properly labeled DOT- <br /> approved 55-gallon drums in accordance with 49 CFR part 172 and 40 CFR part 262 <br /> A Ground Zero technician measured free product thickness, and removed approximately 10 <br /> gallons of product/water mixture from well MW1 during the reporting period The product <br /> thickness varied between non-measurable and 0 15 feet between December 30, 2002 and April 1, <br /> 2003 Table 1 summarizes the measured product thickness and volume removed from well MW 1 <br /> since August 16, 2001 Attachment A contains copies of field logs related to product monitoring <br /> and removal during the reporting period <br /> G 1GROUNDZE%TUi.EBURGIReporislQMR1200311QM2003 doe <br />