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i <br /> i <br /> t <br /> ' r <br /> 20 September 2001 <br /> AGE-NC Protect No 96-0235 <br />' Page 8 of 8 r <br /> s ' <br /> Results of the draw-down pilot test will be utilized to design and place additional extraction wells <br />' if needed The additional wells will be installed upon PHS-EHD approval of an addendum work plan <br /> showing well locations, well,designs and treatment system design r« <br /> 3 4 GROUND WATER SAMPLING <br />' Ground water samples will be collected from the effluent line during the 24-hour purnp test <br /> approximately 15 minutes and 12 hours after pumping is initiated and just before ending the pump <br /> test The samples will be collected into four 40-m1 EPA-approved VOA vials for analysis for TPH-g, <br /> BTEX, <br /> MTBE TBA,TAME,DIPE,ETBE,EDB and 1,2-DCA by EPA Methods 8015M, 8020 and <br /> 8260, respectively <br /> L3 5 PURGED WATER DISPOSAL <br /> If a discharge permit cannot be attained, purged ground water will be containerized in an on-site <br /> 9,000-gallon Baker tank, a "grab" ground water sample will be collected from the Baker tank for <br /> analysis for TPH-g, BTEX, MTBE, TBA, TAME, DIPE, ETBE, EDB and 1,2-DCA by EPA <br /> Methods 8015M, 8020 and 8260,respectively The purged ground water will be transported off-site <br />' under non-hazardous waste manifest to a suitable receiving facility <br /> J <br /> J <br /> r <br /> i <br /> a <br /> Advanced Geognvaronmentai,Inc <br /> 1 <br />