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Appendix A <br /> m the laboratory The sample description, date received, cheat's name, and other relevant <br /> • information is also recorded. <br /> Equipment Cleaning <br /> Sample bottles, caps, and septa used in sampling fbr volatile and sernivolatile organics <br /> will be triple rinsed with lugh-purity deiomwd 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 &0°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 deioruzed <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 hnear 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 stearin cleaned with desonized water. Any parts that may absorb <br /> contaminants, such as plastic pump valves, etc will be cleaned as described above or <br /> replaced <br /> • During field sampling, equipment surfaces that aze 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 /> • <br /> A-4 <br />