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KLEINFELDER <br /> • APPENDIX B <br />' KLEINFELDER FIELD PROTOCOL <br /> B-1 FIELD PREPARATION <br />' Before performing work in the field, environmental staff 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 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 /> B-2 SUBSURFACE SOIL SAMPLING <br /> ' B-21 Drilling <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 /> B-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 /> B-2 3 Collection of Soil Samples <br /> 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 /> 23-482276-AOO/TR950096 (1994) B-1 October 19, 1995 <br /> Copyright 1995 Kleinfelder, Inc <br />