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h� KLEINFFLDER <br /> i <br /> APPENDIX D <br /> KLEINFELDER FIELD PROCEDURES <br /> ' This appendix describes procedures and equipment used by Kleinfelder during site <br /> ' investigations The procedures presented here are intended to be of a general nature <br /> DRILLING <br /> ' Soil borings are advanced using a truck-mounted drill ng, equipped with 8-inch or 10-inch <br /> hollow stern augers During drilling, an experienced environmental geologist classifies <br /> ' soils, collects soil samples for laboratory analysis and logs the boreholes <br /> ' To rmmmme cross-contarn nation, all augers and associated equipment are steam cleaned <br /> prior to the drilling of each boring In addition, all sampling equipment is cleaned with a <br /> ' trisodium phosphate wash and rinsed with distilled water prior to the collection of each soil <br /> sample. <br /> Soil samples are collected every five feet for field screening, lithologic logging, and <br /> potential chemical analysis. Soil samples are collected by advancing the boring to a point <br /> immediately above the desired sampling depth and then driving a Modified California <br /> Sampler, lined with three brass tubes into the undisturbed soil The sampler is then <br /> removed from the bottom of the boring and when the potential analysis is for volatile or <br /> semi-volatile constituents, the bottom (third) tube is sealed with aluminum foil and tight- <br /> fitting plastic caps. The sealed tube is immediately stored in an iced cooler for possible <br /> chemical analysis Soilsamples for chemical analysis are delivered to a laboratory, certified <br /> ' by the Department of Health Services for the required analyses, under chain-of-custody <br /> procedures. <br /> ' QUALITATIVE FIELD SCREENING <br /> ' A Photovac TIP, using a photoionization detector (PID), is often used to provide a <br /> qualitative screening of each soil sample collected during the borings The PID measures <br /> ' ionizable compounds in the air in parts per million by volume (ppmv) Field calibration is <br /> achieved by using a calibrated span gas. Ambient air is used as a zero The screening <br /> procedure consists of sealing a soil sample in a clean Mason Jar, allowing the sample to <br /> 145-88-2013 <br />