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samples were analyzed for TPH-g by EPA method 8015M for gasoline, and BTEX/MTBE by EPA <br /> method 8021B, and detected MTBE was ven ed by EPA method TQ-14 The effluent vapor <br /> laboratory results for April 17, May 9, and June 12, 2001 indicate TPH-g, benzene, and MTBE <br /> concentrations to be below the method detection limit A copy of the vapor well-head laboratory <br /> analytical results, and copies of vapor inlet/outlet laboratory analytical results are presented in <br /> Appendix D A historical summary of hydrocarbons removed by vapor extraction is presented in <br /> Table 2 Field Status Reports for the system are presented in Appendix C <br /> Due to the increase of MTBE in well MW-5, Thrifty request that a 24 hour groundwater pump test <br /> be performed on this well to determine if it is feasible to install a groundwater pump and treat <br /> system The pump test would consist of pumping constantly on this well and recording necessary <br /> data to determine the feasibility and the pumping rate that can be applied to this well due to the <br /> lithology surrounding it If the groundwater extraction test shows it is feasible to remove <br /> hydrocarbon impacted groundwater, Thrifty will then submit a remediation design for groundwater <br /> extraction from well MW-5 <br /> Thrifty will continue the current groundwater monitoring and sampling program, and continue to <br /> operation of the vapor extraction system All interpretations expressed in this report are based upon <br /> review of data collected by E M C <br /> Written by Reviewed by <br /> • ��aED c,'FQ`� <br /> QA\\1GlNg�� <br /> N <br /> 5 `Q <br /> '—`Majxond C Fri nchsen, REAII Larry iginbotham <br /> Project Manager, MBA Registered Geologist #549 ��F <br /> Senior Environmental Hydrogeologist <br />