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f Site Contamination Workplan <br /> Sierra-Bay Farm Credit Service. <br /> Page -3- <br /> i <br /> for geologic logging and three soil samples from each boring wild <br /> % be retained for laboratory analyses . <br /> 4 '�k <br />{ 1 <br /> An organic vapor analyzer (OVA - Flame Ionization Detector) <br /> will be used to screen the soil samples during the drilling <br /> It <br /> process. Descriptions of drilling, , logging, and sampling <br /> I4 <br /> procedures proposed for the investigation ;are presented below. <br /> 3 . 1 Soil Borings <br /> r The soil borings will be drilled witt 8-inch O.D. hollow- <br /> stem continuous-flight augers . The : soil biorings are expected to <br /> be drilled to a depth of approximately 40 :feet. _ In the event <br /> Ix <br /> that gasoline contamination is detected with the organic vapor <br /> ,r <br /> analyzer (OVA) , the augers will be advanced either to ( 1) five <br /> feet below the deepest detectable contamination, or (2) until the <br /> capillary fringe of the water table is encountered. 'if field . " <br /> observations indicate no gasoline contamination is present in <br /> soil borings SBI and SB2, then SB3 will no.t be drilled. <br /> 3.2 Soil Samples :, f <br /> j'. <br /> The soil samples will be collected using a California- <br />.,, <br /> modified split-spoon sampler fitted with ( 3} clean brass sleeves . <br /> The samples will be logged according to the Unified Soil <br /> it <br /> jS I <br /> CONDOR <br /> .f <br />