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r <br /> K L E I N F E L D E R <br /> APPENDIX A <br /> TYPICAL KLEINFELDER FIELD PROTOCOL <br /> A-1 FIELD PREPARATION <br /> Before performing work in the field, environmental staff review the scope of work, <br /> prepare a health and safety plan, coordinate the work to be done with their supervisor, <br /> assemble the necessary sample containers, and check, calibrate and clean equipment <br /> to be used in the field. When underground utilities may exist at a site where subsurface <br /> soil samples are being collected, USA Underground is contacted with the boring <br /> locations and the scheduled date of drilling, or a utility locating firm is employed to <br /> �* check the boring locations. <br /> r- A-2 SUBSURFACE SOIL SAMPLING <br /> A-2.1 Drilling <br /> Subsurface soil samples are collected from soil borings. Soil borings are advanced <br /> using a truck-mounted drill rig, equipped with 8-inch hollow stem augers. The borings <br /> can be advanced vertically, or at an angle up to 45 degrees from vertical. During <br /> drilling, an experienced environmental geologist classifies the soil, logs the lithology and <br /> collects soil samples for laboratory analysis. A sample boring log form is attached at <br /> ` the end of this appendix. <br /> ♦ <br /> A-2.2 Decontamination of Equipment <br /> - To reduce the potential for cross-contamination, augers and associated equipment are <br /> steam cleaned prior to drilling each boring. In addition, sampling equipment is cleaned <br /> ` with a trisodium phosphate wash and rinsed with distilled water prior to collecting each <br /> soil sample. <br /> A-2.3 Collection of Soil Samples <br /> ,. Soil samples are collected approximately every 5 feet for field screening, lithologic <br /> logging, and potential chemical analysis. Samples are collected by advancing the <br /> boring to a point immediately above the desired sampling depth and then driving <br /> (vertical borings) or pushing (slant borings) a Modified California Sampler, lined with <br /> three brass tubes, into the undisturbed soil. The sampler is then removed from the <br /> bottom of the boring. The ends of the bottom (third) tube are covered with Teflon and <br /> sealed with tight-fitting plastic caps. <br /> After the samples are collected they are individually labeled. The label includes <br /> Kleinfelder's name, job number, the date and time the sample was collected, the <br /> employee number of the individual who performed the sampling, and a unique five-digit <br /> 90163.T03/ST07R1061 January 3,2008 <br /> ®2007 Kleinfelder Page A-1 <br />