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R603 SEWER 8 10-05-93 <br /> the centrifugal pump through a totalizer water meter. The water <br /> is then passed through a chamber containing an LEL meter relay <br /> calibrated to shut down the system if vapors from the effluent <br /> ever reach the 10%� LEL level. The clean treated water is <br /> discharged to the 3" sewer clean out . Visual inspections for <br /> leaks on above ground lines, tanks and double contained system <br /> will occur during all site visits. <br /> UPDATE STATUS REPORT ##8 <br /> Interim ground water treatment started December 1, 1992 . LTT is <br /> vacuum lifting (purging) monitor wells MW1, MW2, MW3, MW8 and <br /> MW10 twice a week Before the well purging commenced, water <br /> samples were obtained from the "ConVault" tank aerator before <br /> dumping 800 gallons of this treated water to the sewer lateral, <br /> see Update Status Report #1. The last dumping was for 700 <br /> gallons, making a total of 5172 gallons of treated ground water <br /> dumped to the sewer as of August 23, 1993 (Discharge Report #7) <br /> A continuous LEL reading of the discharge water was observed and <br /> noted on the following table All discharge requirements were <br /> met <br /> No treated water was dumped to the sewer during the month of <br /> September, 1993 . <br /> Sincer 1Y yours, <br /> George - Converse <br /> Project Manager <br /> cc Mr John Margowskz, Wickland Properties <br /> Ms Mary Meays, Public Health San Joaquin Co <br /> Page 2 <br />