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$PF CLEARWATER G R O L P I \ C Enve rant ntonta! S,n tcrc dated February 21, 1996, Revised Remedial Action Plan dated November 12, 1996, and Constructions Specifications dated March 28, 1997 The system was tested on September 28, 1998 for initial compliance testing according to the S]VUAPCD ATC permit#N-3868-1-0 (Appendix D) Mr Craig Mitchell, the SJVUAPCD representative, was present on-site to witness verification testing Results of the venfication testing indicated that the system was operating within compliance of the permit, and the remediation system was restated for full operation on October 7, 1998 Results of initial system testing were presented in Clearwater's letter report dated October 1, 1998 3.1 Operational Data -- Soil Vapor Extraction. and Treatment Petroleum hydrocarbon vapors extracted from soil and groundwater are treated by a Solleco SCAT 270 all electric catalytic oxidizer(catox) ' In accordance with the S.TVUAPCD PTOP ermit#N-3868-1-0(Appendix D), the influent and effluent air streams for the catox unit were analyzed for contaminant concentrations (TPH-and BTEX) on a monthly basis Catox operational data and analytical results of influent and effluent samples are presented on Table 3, and the SVE/AS process flow diagram is shown on Figure 6 Cumulative analytical results of vapor samples collected from the catox influent and effluent streams are presented on Table 4 The following is a summary of the operational data and analytical results of samples from the SVE process stream for this monitoring period o Monitoring date Influentleffluent sampled on 4/12199, 5/13199, and 6/21/99 G Operational Hours 1,721 hours this period and 4,962 to date o Sys up time this period 74% G Influent air flow rate 97 scfm(5/13/99)to 168 scfm(4112/99) ' e Influent air TPHg 71 mg/m3(6/22199)to 3,300 mg/m3(4/12/99) o Effluent air TPHg <10 mg/m3 (6/22/99)to 170 mg/m3 (4/12/99) ' 0 Destruction efficiency 76% (5/13/99)to 94 8%(4/12/99) c TPHg recovery rates 0 1 lbs/hr(6/21/99)to 13 lbs/hr(4/12/99) ' Total TPHg recovery 1,057 Ibs(173 gal)this period and 7,344 lbs(1,204 gal)to date TPHg emission rates <0 01 lbs/hr(6121199)to 0 11 lbs/hr(4/12199) ' a Operating wells VW-1 to VW-4,MW-1,and RW-1 Analytes tested TPHg and BTEX Y Analytical methods EPA Methods 8015 (modified) and 8020 Y Laboratory Entech Analytical Labs,Inc, Sunnyvale, CA(CA FLAP#2224) The TPHg recovery rate is based on analytical influent air sample results and concurrently measured air flow The average TPHg recovery rate for each month is multiplied by hours of operation for that period to calculate TPHg removal for the period between each sampling event D-107 2Q99 GW&Sys Mon Report 3 July 21 1999