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s Smith Technology Corporation <br /> QualitY Assurenc&Quality Control Plan <br /> Revised Februaryl995 I <br /> i <br /> The chain-of-custody record:will contain the fallowing information: <br /> i <br /> ✓ site name <br /> ✓ signature of collector <br /> ✓ date and time of collection <br /> ✓ sample identification number(s) <br /> j ✓ number of containers in sample set r <br /> i ✓ description of sample and container(s) ' <br /> ✓ name and signature of persons, and the companies or agencies they represent, <br /> who are involved in the chain of possession <br /> ✓ inclusive dates and times of possession <br /> ✓ requested analysis for each sample <br />. i <br /> I <br /> 5.3 Delivery of Samples to Laboratory <br /> Samples will be delivered to the laboratory on a daily basis. Samples will be refrigerated to <br /> approximately 4°C for shipping. Shipping containers will be sealed with security tape to assure <br /> sampled integrity during shipping. Delivered samples will be accompanied by a chain-of-custody <br /> record:! The laboratory shall note on the chain-of-custody that samples were properly <br /> preserved and security tape was intact upon arrival. <br /> 6.0 SAMPLING AND DR1T, ANG EQUIPMENT DECONTAMINATION <br /> All equipmentused for drilling and sampling will be decontaminated prior to use. All equipment used <br /> for collection of more than one sample, such as bailers and spoons, will be decontaminated between <br /> each use to prevent cross contamination between samples. Drilling equipment will be decontaminated <br /> prior to commencing drilling at each hole. Well construction materials will be cleaned as necessary, <br /> prior to installation. <br /> 1 <br /> WAAdmin\She11s1QAQC-97.DOC <br /> 4 <br /> s � <br />