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YJ 4A1 <br /> V Kr_ErNFt1_DER <br /> ATTACHMENT B <br /> TYPICAL JKLEItNFELDER FIELD PROTOCOL <br /> i FLU„PREP <br /> Before performing work in the field, envit prmMUB' stag'reviews the supe of work, prepa m a <br /> health and safety plan, coordinates the work to be done with their supervisor, assembles the <br /> necessary sample equipment containers, and checks, calibrates and cleans equipment to be used <br /> in the field. Underground Service Alert(HSA)is also contacted(when appropriate)prior to field <br /> works and is apprised of the marked boring locations and the scheduled date of drilling. In <br /> addition,a UWAY locateog firm is sometimes employed to chem the boring locations. <br /> B-2 MLMNG AND SUBSURFACE SOIL SAMPLING <br /> 11-2,1 Geoprobe Procedures <br /> GeWrobeslsoil vapor probes will be driven and sampled by a subcontractor to Kleinfelder. An <br /> attempt to penetrate the subsurface at each location will be merle. If such penetration is not <br /> possible, alternative investigative tactmiqucs may be used at an additional. cost agreed upon by <br /> the client prior to commencement. Samples will he collected in accordance with the proposal. <br /> B-2.2 Drilling <br /> Soil borings are advanced using a #nick-mounted drill rig, equipped with hollow stem augers. <br /> Subsuatface soil samples are collected from the soil borings. While drilling, an experienced <br /> environmental geologist classifies the soil,.logs the stratigaphy of the boring, and collects soil <br /> samples. <br /> B-2.3 Qua itatfve Field Screening <br /> An organic vapor detector, such as a Photovac TIP using a photo-ionization detector (PID) or a <br /> Foxboro ftame-ionization deteetor(EM), is used to provide a qualitative screening of each soil <br /> sample collected from the borings. The organic vapor detector measures ionizable compounds in <br /> the air in parts per million by volume (ppmv). Field calibration is performed using a calibrated <br /> span gas such as 100-ppm isobutytene. Ambient air is used to set the instrument to zero. The <br /> soil contained in the cone of the sampler or in a brass tube is exposed and screened with the <br /> organic vapor detector. The vapor rcading is noted as the field screening result. <br /> 20-Y'P1-568!2011Pi31J20116235 Page a-1 <br /> C+py6BM 7001,K1dnfckkw,Inc- May 14,2W1 <br />