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i• r Ken 011is <br /> Aitr i 1 2.1 , 1967 <br /> Pnue 2 <br /> 13ased on the literature revlew and any <br /> c:;lstlrtg field <br /> data , position and install three 2- inch diameter ground - <br /> wells to assess the subsurface by <br /> water moniCorin,v <br /> geologic and contaminant conditions • <br /> of <br /> ion <br /> - The vertical and horizontal extent <br /> observationsand <br /> on site will be assessed using field <br /> soil and water samples . <br /> W be determined by the <br /> Subsurface lithologY drilling of the <br /> supervising field geologist during <br /> be conducted <br /> wells . The drilling will <br /> using <br /> a hollow stem auger drilling rig with 7 , 5-inch <br /> .., <br /> O.D. (outside diameter) augers . <br /> Soil samples will be retrieved at approximately <br /> five- foot intervals and/or p <br /> Dints 0 changing <br /> 11thoiogY until the water table is encountered . The <br /> drilling using e <br /> samples will be collected during <br /> 2 . 5- inch O.D. split spoon sampler lined with three , <br /> 2x6-Inch brass sample tubes . The sampler wail be <br /> driven 18 inches ahead of the augers at each sample <br /> point . <br /> Soil samples will be screened in till, field using T <br /> photo-ionizer device (PID !iKu 101 ) • The PID measures <br /> total ionizable compounds ' vapors <br /> adjacentrctouthe <br /> Each Boll sample i;t the splitP <br /> sample saved far p�tPnti:ti nrirtlysls w! 7 i he mertsurrd <br /> with the PID . <br /> The PID measurements In � onJunr, tlau <br /> iurEs tri l i bH utis'tl to selt'r.t <br /> sansples Fur larat.or) analysis . Thi rctiu <br /> bo --- --- <br />