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TYPICAL KLEINFELDER FIELD PROTOCOL <br /> A-1 FIELD PREPARATION <br /> Before performing work in the field, environmental staffs review the scope of work, prepare a <br /> health and safety plan, coordinate the work to be done with their supervisor, assemble the <br /> necessary sample containers, and check, calibrate and clean equipment to be used in the <br /> field. When underground utilities may exist at a site where subsurface soil samples are being <br /> collected, USA Underground is contacted with the boring locations and the scheduled date of <br /> drilling, or a utility locating firm is employed to check the boring locations. <br /> A-2 SUBSURFACE SOIL SAMPLING <br /> A-2.1 Drilling <br /> Subsurface soil samples are collected from soil borings. Soil borings are advanced using a <br /> truck-mounted drill rig, equipped with 8-inch hollow stem augers. The borings can be <br /> advanced vertically, or at an angle up to 45 degrees from vertical. During drilling, an <br /> experienced environmental geologist classifies the soil, logs the lithology and collects soil <br /> samples for laboratory analysis. A sample boring log form is attached at the end of this <br /> appendix. <br /> A-2.2 Decontamination of Equipment <br /> To reduce the potential for cross-contamination, augers and associated equipment are steam <br /> cleaned prior to drilling each boring. In addition, sampling equipment is cleaned with a <br /> trisodium phosphate wash and rinsed with distilled water prior to collecting each soil sample. <br /> A-2.3 Collection of Soil Samples <br /> Soil samples are collected approximately every 5 feet for field screening, lithologic logging, <br /> and potential chemical analysis. Samples are collected by advancing the boring to a point <br /> immediately above the desired sampling depth and then driving (vertical borings) or pushing <br /> (slant borings) a Modified California Sampler, lined with three brass tubes, into the <br /> undisturbed soil. The sampler is then removed from the bottom of the boring. The ends of the <br /> bottom (third) tube are covered with Teflon and sealed with tight-fitting plastic caps. <br /> After the samples are collected they are individually labeled. The label includes Kleinfelder's <br /> name, job number, the date and time the sample was collected, the employee number of the <br /> 117226.E02/ST013R0176 Page A-1 January 31, 2013 <br /> Copyright 2013 Kleinfelder <br />