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R603 UPDATE-16 4/29/93 <br /> "ConVault" . As of December 1, 1992 a total of 22 . 5 gallons of <br /> product and 162 gallons of water have been removed from the <br /> condensation traps, 0 06 gallons product and 30 gallons water <br /> from EX-4 , 9 . 18 gallons product and 66 93 gallons water from MW- <br /> 10, and 13 . 23 gallons product and 65 . 09 gallons water from MW2/3 . <br /> No fluids have collected in the MW-1 condensation trap The <br /> "ConVault" was connected to the vapor recovery manifold on <br /> October 1, 1992 Table 5 represents the field notes from LTT <br /> condensate removal and well purging -(MW2 and MW3 condensate into <br /> the same trap and the condensate removal is represented with MW2 <br /> data) As of March 29, 1993 LTT has removed 3092 .4 gallons of <br /> ground water from MW1, MW2, MW3 , MW8, MW10 and water condensate <br /> from traps for MW2&3 , MW10, EX and 26 25 gallons of product from <br /> the condensate traps Total fluids removed as of March 28 , 1993 : <br /> 3254 gallons of ground water and 48 75 gallons of product . <br /> 5 . 0 SUMMARY <br /> Presently there is no floating product on the ground water <br /> and only occasional product sheen with the condensate recovered <br /> from the vapor extraction moisture dropouts . <br /> On April 1, 1993 , a sample of the water being treated by air <br /> stripping inside the "ConVault" was obtained for certified <br /> laboratory analysis, before dumping approximately 985 gallons of <br /> this water to the City of Stockton' s sanitary sewer, see Table 4 <br /> and Appendix B <br /> As of April 23 , 1993 , a total of 18839 gallons of gasoline range <br /> hydrocarbons have been removed from the soil. and ground water <br /> beneath this site Previously removed floating product (40 25 <br /> gallons) , condensation from vapor extraction (48 75 gallons) , <br /> pro3ected petroleum hydrocarbon in situ oxidation CO2 vapor <br /> recovery (50541 pounds/6 25 pounds/gallon = 8086 . 56 gallons) and <br /> vapor extraction-destruction of hydrocarbons (66646 pounds/6 . 25 = <br /> 10663 36 gallons) . No chlorinated solvents were detected in <br /> chromatogram comparisons, ill e . " 1, 2 , -Dichloroethane (DCE) - <br /> retention time 2 079 minutes, Trichloroethylene (TCE) - retention <br /> time 3 . 023 minutes and Tetrachlorcethyiene (PCE) - retention <br /> time 3 . 75 minutes <br /> 6 . 0 TIME FRAME <br /> May 18 , 1993 Monthly update monitoring of site . <br /> June, 1993 UPDATE STATUS REPORT for May, 1993 and <br /> quarterly sampling and monthly site <br /> monitoring <br /> PAGE 7 <br />