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E]Ell GROUNDWATER RECEIN <br /> EIEID TECHNOLOGY, INC. i AN 1 8 OB%Pike Lane,Concord,CA 94520 <br /> ENVIRONMENTAL HEAL <br /> (415)6-a-2387' <br /> January 16, 1990 PERMIT/SERVIC <br /> Job No. 203 475 2894 . 01 <br /> Mr. Morris L. Allen <br /> Department of Municipal Utilities <br /> 2500 Navy Drive <br /> Stockton, CA 95206 <br /> Re: Monthly Monitoring Report of Wastewater Discharge <br /> at 7-Eleven No. 20680, 9110 Thornton Road, <br /> Stockton, California. <br /> Dear Mr. Allen: <br /> This letter is to report data collected from monitoring performed <br /> at the above-mentioned site by Groundwater Technology, Inc. (GTI) <br /> for the month of December 1989. During this period of time, <br /> 32 , 256 gallons of wastewater were discharged to the sanitary <br /> sewer. The average rate of wastewater for discharge was <br /> 0 . 8-gallons per minute. <br /> The groundwater extraction treatment system was shut down on <br /> December 28 , 1989, and is presently inoperable due to mechanical <br /> failure of the water table depression pump (WTDP) . The system <br /> will be in full operation within 'the next few weeks after repair <br /> of the WTDP is completed. Future' sampling will then be conducted <br /> in accordance with the normal schedule as outlined in the <br /> Wastewater Discharge Permit. <br /> Table 1 lists a summary of the laboratory analyses results for <br /> December. Copies of the original: laboratory results are <br /> E <br /> attached. Water samples from the air-stripper influent and <br /> effluent lines were collected twice during this period (December <br /> 1 and December 15, 1989) . The samples were then analyzed for the <br /> Offices throughout the U.S.,Canada and Overseas <br />