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Second Quarter 2005 <br /> Thnfty#172 <br /> July 21, 2005 <br /> Page 4 <br /> 8, 2005 A total of 55,770 gallons of water were treated and discharged during the reporting <br /> period, and 538,044 gallons had been treated and discharged since the commencement of <br /> groundwater treatment through June 27, 2005 Historical groundwater system operations are <br /> reported in Table 4a and 4b, and the quarterly analytical results are presented in Appendix E <br /> Summary and Recommendations <br /> The soil vapor and groundwater extraction systems were started on April 26, 2001 A total of <br /> 142,407 pounds of hydrocarbons have been destroyed by the vapor extraction system, and <br /> 538,044 gallons of groundwater have been treated by the groundwater system The VEU system <br /> was down during the current quarter due to mechanical problems with a blower Due to <br /> declining dissolved hydrocarbon concentrations in other onsite wells, Thrifty focused <br /> groundwater cleanup efforts only on well MW-11 during the reporting period <br /> Closing Comments <br /> Thrifty will continue quarterly groundwater monitoring, gauging, purging, and sampling of the <br /> . groundwater monitoring wells, and operation of the remediation system <br /> All interpretations expressed in this report are based solely upon review of data collected by <br /> EMC and laboratory analyses by Associated Laboratories <br /> Respectfully submitted, <br /> cw:.0:ymIICtcsL�Sv <br /> Michael H Bowery, R G 5027 ` ``�, - - 4o�a` Chris Panaftescu <br /> cn9 0 <br /> Project Manager �` `--'' General Manager <br /> Environmental Affairs <br /> cc - Ms Michelle Wilson <br /> Circle K Stores, Inc <br /> 495 East Rmcon, Ste 150 <br /> Corona, CA 92879 <br /> - Ms Liz Sewell <br /> Tosco Marketing Company <br /> 76 Broadway <br /> Sacramento, CA 95818 <br /> - File <br />