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C. Equignent Decontamination * EPA Region 9 recommended generic procedure prior to initial sampling. 1) Wash w/ non—phosphate detergent. 2) Tap water rinse 3) 0.1N nitric acid rinse 4) Deionized/distilled water rinse 5) Pesticide grade solvent rinse 6) Deionized/distilled water rinse (2x) 7) organic free water rinse (HPLC grade) * Decontamination in the field may not require a nitric acid rinse. * You may want to use a different procedure. Give the rationale. * Acetone is not recommended for the solvent rinse since it is one of the compounds on the TCL. If acetone or any other TCL canpound is used as part of the decontamination process then the Sample Plan should discuss this and note that the solvent in question is not a ccmpound of interest. * Whenever possible, obtain sets of each sampling tool being used in the field so that decontamination can done in batches, after all the equipment has been used. This will minimize the number of blanks needed. D. Sample Containers * Identify the container types that will be used for each of the analytical parameters and the source of sample containers. Identify the parameters which will be combined in sample containers. Make sure that the preservation rewirements are canpatible and the sample volume will be sufficient. * Appendix C identifies the containers and volumes which are required for the CLP RAS analyses. Containers provided by the CLP should not be rinsed before s anpling. * For SAS analyses, collect at least twice the minimum volume required by the analytical method (see Appendix D) . In sane cases, a special type or zed container is required for SAS analyses. E. Sample Preservation * Appendix D identifies sane preservation methods. Detail the methods to be used in your Sample Plan. Identify when they will be implemented. * The preservatives used must be indicated on the sample container and on the paper work. * Region 9 is now requiring, for CLP samples, acidification of low concentration croundwater and other drinking water samples for analysis by EPA method 601.