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ra r`-mss' <br /> y , <br /> r <br /> MURRAY & AS5SGCi_7ES`{ <br /> ENVIRONMENTAL SERVICES <br /> March 17, 1991 <br /> . R f <br /> Harlen Knoll <br /> San Joaquin County Health Department <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Dear Mr. Knoll: <br /> Re: Quarterly Sampling Report, Groundwater Monitoring Wells - Stan Morri Ford <br /> Dealership - Tracy, California <br /> _ Murray & Associates.is forwarding for your review and consideration the following <br /> analytical results stemming from the last (Spring, 1991) round of water sampling at the <br /> Stan Morri Ford Dealership, 104 West 11th Street, Tracy, California. The purgeable <br /> halocarbon contamination present appears to be decreasing. Shallow groundwater at the <br /> site is staying at a depth of approximately 12 feet below the asphalt-covered surface of the <br /> f Ford Dealership. Regional groundwater flow direction is still generally to the northeast. <br /> All apparatus was brought to the site clean and in serviceable condition. Following the <br /> t purging and sampling of each subsequent well, all equipment was steam-cleaned and <br /> washed in a solution of liquinox organic cleaner, rinsed in deionized water and allowed to <br /> air dry. <br /> Groundwater sampling proto.ols call for the evacuation of a sufficient volume of water <br /> from the well to insure that the sample is collected from water that has been newly drawn <br /> into the well from the surrounding geologic formation. This effluent water is currently <br /> stored on-site in new DOT 17 E drums. Only effluent water removed from monitoring <br /> wells MW-1 and MW-3 is being contained on-site. Water purged from MW-2 was released <br /> directly to the City's storm drain. <br /> y 2252 Fort Point Drive,Gold River, CA 95670 (913)635.0839 FAX(916)852.1111. <br /> IA <br /> �� r <br />