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KLEINFELDER <br /> employees and the receiving employee of the analytical laboratory when the samples are <br /> delivered An example of the chain-of-custody form is attached to this appendix <br /> B-2 6 Soil Sample Selection for Laboratory Analysis <br /> The selection of soil samples for laboratory analysis is based upon 1) the project objectives and <br />' requirements, 2) qualitative field screening performed in the field using the organic vapor <br /> detector, and 3) field observations such as lithology, odor, discoloration, or high moisture <br />' content Generally, samples are submitted from the bottom of the boring and from soil horizons <br /> with significant potential for contamination as indicated by the organic vapor detector, <br />' observations, and site history Samples may be collected from regular intervals when <br /> information on concentrations versus depth is desired Samples that are not selected for <br /> laboratory analysis are held in sample control for possible future reference When these samples <br /> are no longer needed, they are returned to the site and are combined with the soil cuttings <br /> generated during their collection <br /> B-2 7 Soil Boring Closure and Soil Cutting Disposal <br /> Soil borings are closed immediately after the collection and logging of soil samples Closure is <br /> accomplished by grouting the boring with a cement/bentonite slurry or as otherwise required <br />' Drill cuttings will be placed in 55-gallon drums or wrapped in plastic and left on site for disposal <br /> by the site owner if requested, Kleinfelder can coordinate disposal of soil and water with <br /> contractors after chemical analysis results are available <br /> 1 <br /> 1 <br />' 23-482276-AOO/TR950096(1994) B-3 October 10, 1995 <br /> Copyright 1995 Kleinfelder, Inc <br />