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G <br /> eri9MFmple.fl19M1e5dunam. <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 <br /> may be collected from regular intervals when information on concentrations versus <br /> depth is desired. Samples that are not selected for laboratory analysis are held in <br /> 1 sample control for possible future reference. When these samples are no longer <br /> needed, they are returned to the site and are combined with the soil cuttings generated <br /> during their 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 /> February 101486.4/ST012R025 Page A-3 y 1, 2012 <br /> ' Copyright 2012 Kleinfelder <br />