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E uY ment Cleanin <br /> Sample bottles, caps, and septa used in sampling for volatile and semivolatile organics <br /> will be triple rinsed with high-purity deionized water After being rinsed, sample bottles <br /> will be dried overnight at a temperature of 200°C Sample caps and septa will be dried <br /> overnight at a temperature of 60°C Sample bottles, caps, and septa will be protected <br /> from solvent contact between drying and actual use at the sampling site Sampling <br /> containers will be used only once and discarded after analysis is complete <br /> Plastic bottles and caps used in sampling for metals will be soaked overnight in a 1- <br /> percent nitric acid solution Next, the bottles and caps will be triple rinsed with deionized <br /> water Finally, the bottles and caps will be air dried before being used at the site Plastic <br /> bottles and caps will be constructed of linear polyethylene or polypropylene Sampling <br /> containers will be used only once and discarded after analysis is complete <br /> Before the sampling event is started, equipment that will be placed in the well or will <br /> come in contact with groundwater will be disassembled and cleaned thoroughly with <br /> detergent water, and then steam cleaned with deionized water Any parts that may absorb <br /> contaminants, such as plastic pump valves, etc will be cleaned as described above or <br /> replaced If a positive displacement (bladder) pump is used the inside surfaces of the <br /> pump tubing will be cleaned by heating the tubing overnight at 120°C with a low-flow, <br /> inert air source <br /> Once the bladder pump is cleaned and reassembled, a pump blank will be obtained by <br /> pumping organic-free water through the bladder pump assembly The pump effluent will <br /> be sampled and analyzed by EPA Method 601 or EPA Method 602 The pump effluent <br /> analysis results must register below the method-reporting limit for each parameter before <br /> the pump is taken to the site for use <br /> During field sampling, equipment surfaces that are placed in the well or contact <br /> groundwater will be steam cleaned with deionized water before the next well is purged or <br /> sampled <br />