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ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised November 2002 <br /> 11.2 Sample Collection During Tank Removal <br /> Soil samples will be collected as soon as possible after removal of the tank. Where feasible, <br /> all preparations for soil sampling will be made prior to tank removal. Soil samples <br /> collected from a backhoe bucket or directly from the excavation floor will be collected in a <br /> thin-walled stainless steel or brass cylinder at least 3-inches long by 1-inch in diameter. <br /> From 3 to 24-inches of soil will be removed from the immediate surface area where the <br /> sample is to be taken and the cylinder will then be pounded into the soil with a wooden <br /> mallet, bulk density driver, or other decontaminated driving device. No headspace will be <br /> present in the cylinder once the sample is collected. Care will be taken to avoid <br /> contamination of both the inside and outside of the cylinder as well as its contents. During <br /> sampling, latex gloves will be worn to prevent cross-contamination with other samples. <br /> One pair of disposable gloves will be dedicated to each sample collected. <br /> Once the sample is collected, each end of the cylinder will be sealed with aluminum foil or <br /> teflon tape and then capped with a polyethylene lid, taped, and labeled. The sample will <br /> 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. Sample <br /> identification, storage and transportation will be conducted as outlined in the previous <br /> section. <br /> 11.3 Sampling from Soil Piles or Shallow Soil Pits <br /> Soil samples will be collected and transported from excavated material in the manner <br /> described in the previous section, however, a backhoe will not be utilized. If composite <br /> samples are collected, four brass cylinders or glass jars will be collected for every 50 cubic <br /> w:\admin\shells\qaqc-02.doc <br /> 12 <br />