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1 <br />' Permits and Variance <br /> The vapor extraction system was initially permitted with the San Joaquin Air Pollution <br /> Control District by a 90 day (emergency) variance to get the system up and running <br /> as soon as possible During the 90 day period, VET also processed a full permit <br /> through the SJCAPCD and received the permit prior to expiration of the variance The <br /> system is permitted for operation until 1993 The permit and variance are contained <br />' in Appendix <br /> OPERATION OF THE VAPOR EXTRACTION SYSTEM <br /> The vapor extraction system was turned on January 5, 1990 utilizing all four vapor <br /> extraction wells and four groundwater monitoring wells All the vapor wells (VP-1, VP- <br /> 2, VP-3, VP-4) and groundwater monitoring wells MW-1, MW-3, MW-4, and RW-1 were <br /> • <br /> sampled using a calibrated SKC Pum with SKC Charcoal tubes Selected samples <br /> P 9 P P <br /> were submitted to Superior Analytical Laboratory Inc for analysis by NJOSH Method <br /> 1500/modified EPA Methods 8015 and 8020 for TPH as gasoline and BTEX The <br /> tables present the analytical results obtained during start-up and the laboratory hard <br /> copy is contained in Appendix II <br /> I <br /> During the first 60 hours of VES operation, over 240 pounds of gasoline were <br /> extracted based on calculations from the vapor concentrations and flows from the <br /> Iindividual blowers The vapor concentrations from the individual vapor extraction wells <br /> (VP-1, VP-2, VP-3, VP-4) had not increased in any significant amount during this <br /> period indicating that little hydrocarbon vapor exists within the area of influence of <br /> r� <br /> these wells However, the vapor concentrations from the individual monitoring wells <br /> VAPOR EXTRACTION TECHNOLOGY, INC <br />