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R603 SEWER 22 1-29-93 <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 10o 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 #2 <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 This most recent dumping was for <br /> 600 gallons, making a total of 1400 gallons of treated ground <br /> water dumped to the sewer as of January 21, 1993 . <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 /> Sincerely yours, <br /> George L Converse <br /> Pct Manager <br /> 7 <br /> cc Mr John. Margowski, Wickland Properties <br /> Ms Mary Meays, Public Health San Joaquin Co <br /> page 2 <br />