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ii <br /> j3 <br /> ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised 1998 <br /> �k <br /> u <br /> 4.0 SAMPLE PRESERVATION <br /> Sample containers will be pre-cooled and transported to the site in the cooler. All samples will be <br /> preserved as indicated on Table 1 and placed in a cooler immediately after collection. Chemical ice <br /> 1 <br /> sealed in plastic bags will be used in the cooler to cool and maintain samples at a temperature of 4°C. <br /> a <br /> A high-low thermometer will accompany the samples to do ment transport conditions. Further <br /> r� <br /> discussion of sample preservation is included in the sampling protocols (Sections 11.0 and 12.0). <br /> ;a <br /> 5.0 CHAIN-OF-CUSTODY PROCEDURES <br /> 5.1 Sample Labels <br /> Each sample container will be labeled prior to filling to prevent misidentification. The label will <br /> contain at least the following information: , <br /> ii sample number which uniquely identifies�the sample <br /> iu project title or number <br />+ u location of sample collection <br /> u soil boring or well number, as applicable".l <br /> u name of collector <br /> ii date and time of collection <br /> ii type of analysis requested <br /> 5.2 Chain-of-Custody Record and Sample Analysis Request Form <br /> I <br /> A chain-of-custody record for each container or sample will be used to track possession of the <br /> samples from the time they were collected in the field until the time they are analyzed in the <br /> laboratory. <br /> The chain-of-custody record will contain the following information: <br /> 0 site name <br /> 0 signature of collector <br /> ii date and time of collection <br /> 3 <br /> i <br />