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CLEARW- A'TER <br /> G K O f. P i \ C <br /> Environmental Services <br /> In accordance with the SJVUAPCD PTO permit #N-3868-1-0 (Appendix D), the influent and <br /> effluent air streams for the catox unit were analyzed for contaminant concentrations (TPHg and <br /> BTEX) on a monthly basis Catox operational data and analytical results of influent and effluent <br /> samples are presented on Table 3, and the SVE/AS process flow diagram is shown on Figure 5 <br /> Cumulative analytical results of vapor samples collected from the catox influent and effluent <br /> streams are presented on Table 4 The following is a summary of the operational data and <br /> analytical results of samples from the SVE process stream for this monitoring period <br /> Monitoring date Influent/effluent sampled on 9/28/98, 11/4/98, 12/3198, and 1120199 <br /> O Operational Hours 1,961 hours this period and to date <br />' o Influent air flow rate 75 scfm (1114198) to 152 scfm(9/28/98) <br /> • Influent air TPHg 370 mg/m3 (9/28/98) to 6,500 mg/m3(1213198) <br /> ° Effluent air TPHg <I 0 mg/m3 (9/28, 11/4/98, 1120/99) to 27 mg/m3 (12/3/98) <br /> • Destruction efficiency X97% (9128, 11/4, 12/3/98, and 1120199) <br /> • ° TPHg recovery rates 0 2 lbs/hr(9/28/98) to 2 9 lbs/hr (12/3/98) <br /> 0 Total TPHg recovery 3,437 lbs (563 gallons) this period and to date <br /> ° Operating wells VW-1 to VW-4, MW-1 and RW-1 <br /> ° Analytes tested TPHg and BTEX <br /> ° Analytical methods EPA Methods 8015 (modified) and 8020 <br /> ° Laboratory Entech Analytical Labs, Inc , Sunnyvale, CA (CA ELAP#2224) <br /> The TPHg recovery rate is based on analytical influent air sample results and concurrently <br /> measured air flow The average TPHg recovery rate for each month is multiplied by hours of <br /> operation for that period to calculate TPHg removal for the period between each sampling event <br /> IOn January 20, 1999, vacuum influence across the area of known soil contamination was <br /> evaluated in the field with the system fully operational While the SVE system was extracting <br /> vapor from wells VW-1 to VW-4, MW-1, and RW-1, vacuums were measured on extraction wells <br /> and several perimeter monitoring wells The vacuum applied to each extraction well was <br /> • <br /> D-107 4Q98 GW & Sys Mon Report 4 January 27, 1999 <br />