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RFSNA Induslnes Inc. <br /> Quality Assurance/Q"Iity Control Plan <br /> Revised November IM <br /> Soil samples will be collected at 5-foot intervals, at significant changes in lithology and <br /> intervals of obvious contamination in order to develop a complete profile of soil <br /> contamination. <br /> 11.2 Sample Collection During Tank Removal <br /> Soil samples will be collected as soon as possible after removal of the tank. Where <br /> feasible, all preparations for soil sampling will be made prior to tank removal. Soil <br /> .W <br /> samples collected from a backhoe bucket or directly from the excavation floor will be <br /> collected in a thin-walled stainless steel or brass cylinder at least 3-inches long by 1-inch <br /> in diameter. From 3 to 24-inches of soil will be removed from the immediate surface <br /> area where the sample is to be taken and the cylinder will then be pounded into the soil <br /> with a wooden mallet, bulk density driver, or other decontaminated driving device. No <br /> headspace will be present in the cylinder once the sample is collected. Care will be <br /> taken to avoid contamination of both the inside and outside of the cylinder as well as its <br /> contents. During sampling, latex gloves will be worn to prevent cross-contamination <br /> with other samples. One pair of disposable gloves will be dedicated to each sample <br /> collected. <br /> Once the sample is collected, each end of the cylinder will be sealed with aluminum foil <br /> or teflon tape and then capped with a polyethylene lid, taped, and labeled. The sample <br /> will then be individually sealed in a ziplock bag and immediately placed in an ice chest <br /> containing dry ice or frozen chemical ice for delivery to a state certified laboratory. <br /> Sample identification, storage and transportation will be conducted as outlined in the <br /> previous section. <br /> QAQC1092.FNL ] 1 <br />