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• Source Test Results <br /> Soil Va or Extraction and Abatement System <br /> ARCO Station No 548 <br /> Stockton, CA <br /> Page 2 <br /> Additionally, a Photo Ionization detector (PID) was used to record volatile organic <br /> compounds (VOC) concentrations, influent and effluent to the SVE system, to verify <br /> destruction of petroleum hydrocarbons Influent and effluent samples were collected at <br /> sample ports before and after the catalytic oxidizer Another influent sample was also <br /> collected upstream of the dilution valve to monitor the petroleum hydrocarbon <br /> concentrations from the extraction wells A vacuum pump and iron lung were used to <br /> collect soil vapor samples into one-liter tedlar bags, which were forwarded to Sequoia <br /> Analytical, a State Certified Laboratory for chemical analysis with appropriate chain-of- <br /> custody documentation Analytical results of samples collected on September 28, 2000 <br /> are included in Appendix A The total flow into the catalytic oxidizer was determined by <br /> the inline flow meter and verified by use of a field manometer All field measurements <br /> were recorded on field data sheets, included in Appendix B <br /> Analytical results of the soil vapor samples collected during the source test were used to <br /> calculate mass extraction and emission rates and destruction efficiencies Table I <br /> presents a summary of the system operating parameters, analytical results and destruction <br /> efficiencies Example calculations are included in Appendix C <br /> Soil vapors were extracted at the rate of 14 43 pounds per day (lbs/day) total petroleum <br /> hydrocarbon as gasoline (TPHG), emitted at 0 11 lbs/day TPHG, with an efficiency of <br /> 993% The flow rate through the system was calculated to be 60 59 actual cubic feet per <br /> minute (measured to be 54 standard cubic feet per minute in the field) <br /> The results of the source tests demonstrate compliance with the conditions listed in the <br /> ATC, therefore, Delta requests that the San Joaquin Valley Unified Air Pollution Control <br /> District issue a permit to operate (PTO) for the SVE system <br /> If you have any questions, please call Gown Kowtha at (530) 676-6001 <br /> Sincerely, <br /> D%TA ENVI ONMENTAL CONSULTANZojeanager <br /> JkJowri Kowtha n, R G <br /> Project Engineer <br /> Attachments Table I Summary of Analytical Results <br /> Figure 1 Site Location Map <br /> Figure 2 Site Map <br />