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r <br /> -WESMA <br /> RESNA Industnes Inc <br /> Quality Assurance/Quality Control Plan <br /> Revised November 1992 <br /> I <br /> i <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 <br /> to approximately 4*C for shipping Shipping containers will be sealed with security tape <br /> to assure sample integrity during shipping. Delivered samples will be accompanied by <br /> a chain-of-custody record. The laboratory shall note on the chain-of-custody that samples <br /> ' were properly preserved and security tape was intact upon arrival <br /> ' 6.0 SAMPLING AND DRILLING EQUIPMENT DECONTAMINATION <br /> All equipment used for drilling and sampling will be decontaminated prior to use. All equipment <br /> used for collection of more than one sample, such as bailers and spoons, will be decontaminated <br /> between each use to prevent cross contamination between samples. Drilling equipment will be <br /> ' decontaminated prior to commencing drilling at each hole Well construction materials will be <br /> cleaned as necessary, prior to installation. <br /> r <br /> Equipment and well material decontamination will be conducted on an impermeable surface and <br /> all decontamination effluent will be contained. All surfaces of the equipment will be thoroughly <br /> decontaminated using a steam cleaner. The equipment will be placed on a drying rack for air <br /> drying The decontamination water will be stored in containers certified for hazardous materials <br /> storage and disposed of in an approved manner. <br /> 1 <br /> Sample equipment to be used for pesticides and organic analysis will be washed in a <br /> nonphosphate detergent(Alconox or equivalent) and rinsed with tap water, followed by deionized <br /> water and finally with acetone If the equipment is for metals analysis, the initial nnse will be <br /> conducted with 0.1 N nitric acid followed by tap water and deionized water. <br /> QAQCIDn WL 4 <br /> 1 <br />