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Smith Environmental Technologies Corporation <br />Quality Assurance/Quality Control Plan <br />Revised February 1995 <br />The chain -of -custody record will contain the following information: <br />✓ site name <br />✓ signature of collector <br />✓ date and time of collection <br />✓ sample identification number(s) <br />✓ number of containers in sample set <br />✓ 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 />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 />sample 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 DR .T.7NG EQUIPMENT DECONTAMINATION <br />All equipment used 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. DnIling 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 />m:�..\sheils\QAQG95. WP5 <br />4 <br />• <br />SIRH <br />