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iILE/NFELDER <br /> ft&People.A19h6du0onc <br /> • the samples are being submitted, if any. The chain-of-custody form is signed by each <br /> person who handles the samples, including all Kleinfelder employees and the receiving <br /> employee of the analytical laboratory when the samples are delivered. An example of <br /> the chain-of-custody form is attached to this appendix. <br /> A-2.6 Soil Sample Selection for Laboratory Analysis <br /> The selection of soil samples for laboratory analysis is based upon 1) the project <br /> objectives and requirements, 2) qualitative field screening performed in the field using <br /> the organic vapor detector, and 3) field observations such as lithology, odor, <br /> discoloration, or high moisture content. Generally, samples are submitted from the <br /> bottom of the boring and from soil horizons with significant potential for contamination <br /> as indicated by the organic vapor detector, observations, and site history. Samples may <br /> be collected from regular intervals when information on concentrations versus depth is <br /> desired. Samples that are not selected for laboratory analysis are held in sample <br /> control for possible future reference. When these samples are no longer needed, they <br /> are returned to the site and are combined with the soil cuttings generated during their <br /> • collection. <br /> A-2.7 Soil Boring Closure and Soil Cutting Disposal <br /> Soil borings are closed immediately after the collection and logging of soil samples. <br /> Closure is accomplished by grouting the boring with a cement/bentonite slurry or as <br /> otherwise required. <br /> Drill cuttings will be placed in 55-gallon drums or wrapped in plastic and left on site for <br /> disposal by the site owner. If requested, Kleinfelder can coordinate disposal of soil and <br /> water with contractors after chemical analysis results are available. <br /> A-3 GROUNDWATER MONITORING <br /> A-3.1 Monitoring Well Construction <br /> Construction details for shallow ground water monitoring wells are as follows: <br /> • The well casing will be 2-inch inside diameter, flush threaded joint, schedule <br /> • 40 PVC pipe. <br /> 117226.E02/ST012RO696 Page A-3 September 14, 2012 <br /> Copyright 2012 Kleinfelder <br />