ARCHIVED REPORTS XR0006467 - Laserfiche WebLink

Home Browse Search

R603 UPDATE-10 11/09/92 These pipes along with monitor wells MW1, MW2, MW3 and MW10 are being used for vapor extraction -- soil and ground water remediation. On October 10, 1991 the vapor extraction system operated for 6 hours, to check the auto shut downs and percent destruction of the REMOX unit, using monitor wells MW1, Milo, and the excavation wells. The system was restarted on October 17 , 1991 for the initial inspection and operation of the system. The unit operated until November 5 , 1991, when it was shut down to replace a worn bearing. The system was restarted after the repairs on November 20 , 1991 and operated until December 24, 1991 . On this date someone turned off the main breaker that services the treatment compound. This breaker box has since been locked. The unit was restarted on January 3 , 1992 and operated until July 20 , 1992, with occasional auto shut downs due to high temperature ( 15500F) in the pre-oxidation chamber. On July 20, 1992, the heat exchanger malfunctioned and the incinerator shut down due to low temperature. The unit remained off until it was replaced on August 18 , 1992 with a new unit. At the present (October 16, 1992) the REMOX units have operated • for a total of 4864 hours out of a total of 8063 . 25 hours ( 60% ) . The new replacement unit has operated 862 hours out of 1416 . 25 hours ( 61% ) , removing and destroying 35132 pounds of gasoline range hydrocarbons. Since- replacing the unit on August 18, 1992, the REMOX has removed/destroyed 9293 pounds or 10 . 78 pounds per operational hour, see Tables 2 and 3 and Appendix B-Air Monitoring Reports. Condensation from vapor extraction is being collected in moisture drop out tanks constructed of 12" PVC pipe, prior to the manifold, to prevent moisture build up on the vacuum pump filter. All fluids removed from the condensation traps are placed into the 1000 gallon "ConVault" within the treatment- compound. AS Gf September 3 , 1992, a total of 10. 27 gallons of product and 51. 59 gallons of water have been removed from the condensation traps; 0 . 06 gallons product and 18 . 73 gallons water from EX411 , 3 . 98 gallons product and 13 . 13 gallons water from MW-10 , and 6 . 23 gallons product and 21 . 73 gallons water from MW2/3 . No fluids have collected in the MW-1 condensation trap. The ConVault was hooked into the vapor recovery manifold on October 1 , 1992 . At this time the 1/4" of product was floating on the stored water surface within the ConVault. observations made on October 8 , 1992 , showed that the fl ngt 3 nn rnr-nrjiirrt harl been rcmnxr,=H hi the vacuum placed onto the ConVault and a water sample was then obtained and analyzed thru WEGE ' s non certified laboratory and • showed the stored water had 30 . 5 Mg/L gasoline range hydrocarbons (TFH) , 0 . 994 Mg/L benzene, 9 . 679 Mg/L toluene, and 23 . 96 Mg/L PAGE 8