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• <br /> ATTACHMENT A <br /> REMEDIAL SYSTEM PERFORMANCE EVALUATION <br /> Soil vapor extraction (SVE) and air sparging were initiated on January 1, 1995 and May 5, 1995, <br /> respectively A brief description and performance evaluation of the remedial system between <br /> April 16, 1999 and June 11, 1999 is presented below <br /> SVE System <br /> The SVE system is comprised of 14 SVE wells (V-1 through V-13, and E-6) and a Airex Katox <br /> 100 catalytic oxidizer The SVE system is permitted by the San Joaquin County Unified Air <br /> Pollution Control District (SJVUAPCD) Permit to Operate Number N-3601-1-0, for operation <br /> through January 1, 2000 <br /> The SVE system was not operated this Quarter due to high groundwater elevations making <br /> operation of the SVE system not feasible <br /> Air Sparging System <br /> The air sparge system is comprised of 9 air sparge wells (S-1 through S-9) and a MD Pneumatics <br /> Model 3202 7 5-horsepower blower <br /> During the quarter, the air sparging system was fully operational Air sparging system <br /> operational data, including well open/closed status, flow rate, and applied pressure data are <br /> presented in Table A-1 Monitoring well dissolved oxygen data is shown on Table A-2 <br /> Treatment system field data sheets are included as Attachment A-A <br /> Conclusion <br /> SECOR will continue to operate the air sparge system The SVE system will remain off until <br /> groundwater elevations decline to a point where SVE is feasible <br /> Attachments Table A-1 - Air Sparging System Performance Data <br /> Table A-2 - Monitoring Well Dissolved Oxygen Data <br /> Attachment A-A Treatment System Field Data Sheets <br />