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I; 4TH Quarter SVES Report,Beacon #502 Lodi 23 October, 1992 Monitoring The system was down and operated for 5 days since 22 September 1992. An efficiency test was conducted for confirmation of system performance. Laboratory results found destruction efficiencies to be in excess of 96 percent. The results from this test were submitted to Mark Schonhoff of the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD). Wells were not monitored during visit. Il 02 November 1992 Servicing. The system was down, but operated 6 days since 23 October 1992. 03 November, 1992 Monitoring. The system operated continuously since 02 November 1992. Monitoring was performed on system influent, effluent and extraction wells. Vapor Wells VW-8 and VW-9 had concentrations of 550 ppm. An air bag was retrieved from VW-8 to verify field readings . The results of the analysis was 423 ppm, which confirmed field screening. No adjustments were made to the wells. 05 November 1992 Serving The system was down and had operated 1 day since 03 November 1992. The system was restated. �4 16 November, 1992 Monitoring. The system operated continuously since 05 November 1992. Monitoring was performed on influent, effluent and wells. Testing was conducted to determine optimum extraction scenario for wells VW-8 and VW-9. If both wells were open system vacuum was 6.0 inches of mercury and the TVH removal rate was 10 pounds per day. When one well was open the system vacuum was 9.0 inches of mercury and TVH removal rates were 5 and 8 pounds per day for wells VW-8 and VW-9, respectively. Conclusions from the test were to keep both wells open, because TVH removal rates were greatest and equipment stress would be reduced. Monitoring was performed on system influent and extraction wells. t16 November 1992 Monitoring The system operated continuously since 06 November 1992. Monitoring was conducted on influent, effluent and wells. No adjustments were made on system or wells. 3 r