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;t <br /> k' i KLEINFELDER <br /> APPENDIX A <br /> TYPICAL KLEINFELDER FIELD PROTOCOL <br /> 11 <br /> A-I FIELD PREPARATION <br /> °5 <br /> Before performing work in the field, environmental staff review the scope of work, prepare a <br /> F, <br /> health and safetyplan, coordinate the work to be done with their supervisor,p � p sor, assemble the <br /> necessary sample containers, and check, calibrate and clean=equipment to be used in the field. <br /> ` When underground utilities may exist at a site where subsurface soil samples are being collected, <br /> USA Underground is contacted with the boring locations and the scheduled date of drilling, or a <br /> utility locating firm is employed to check the boring locations". ` <br /> A-2 SUBSURFACE SOIL SAMPLING <br /> A-2.1 Drillin <br /> Subsurface soil samples are collected from soil borings. Soil borings are advanced using a truck- <br /> mounted drill rig, equipped with 8-inch hollow stem augers. The borings can be advanced <br /> vertically, or at an angle up to 45 degrees from vertical." During drilling, an experienced <br /> environmental geologist classifies the soil, logs the lithology and collects soil samples for <br /> laboratory analysis. A sample boring log form is attached at the end of this appendix. <br /> A-2.2 Decontamination of Equipment E <br /> LTo reduce the potential for cross-contamination, augers grid 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 /> j Soil samples are collected approximately every 5 feet for field screening, lithologic logging, and <br /> 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 undisturbed <br /> f soil. The sampler is then removed from the bottom of the boring. The ends of the bottom (third) <br /> tube are covered with Teflon and sealed with tight-fitting plastic caps. <br /> { <br /> 20-4659-01.E01/2011R1442 i Page A-I <br /> ®2001,Kleinfelder,Inc. November 28,2001 <br />