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R$SNA Industries Inc <br /> Quality Assumnce/Quality Control Plan <br /> Revised November 199; <br /> •� inclusive dates and times of possession <br /> •/ requested analysis for each sample <br /> 5.3 Deliveryof <br /> Samples to Laboratory <br /> iSamples will be delivered to the laboratory on a dally 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 /> Equipment and well matenal 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 /> g Y <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 /> Istorage and disposed of in an approved manner <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 rinse will be <br /> conducted with Q.1 N nitric acid followed by tap water and delonized water. <br /> QAQcIo92 M 4 <br /> 1 <br />