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R603 SEWER 6 $-31-93 <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 100-. 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 46 <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 A continuous LEL <br /> reading of the discharge water was observed and noted on the <br /> following table All discharge requirements were met <br /> No treated water was dumped to the sewer during the month of July, <br /> 1993 <br /> Sincerely, yours, <br /> 'i <br /> � V <br /> Georg Converse <br /> Pro3ect Manager <br /> cc Mr John Margowski, Wickland Properties <br /> Ms Mary Meays, Public Health San Joaquin Co <br />• <br /> page 2 <br />