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Equipment Decontamination Standard Operating Procedure <br /> SWE-FSOP-801;Revision 1 Ahtna Southwest Environmental Operations <br /> • Brushes,typically stiff bristle <br /> • Plastic buckets or tubs <br /> • Anionic detergent (LiquinoxT", or similar) <br /> • Spray or rinse bottles, or pump sprayer <br /> • High-pressure hot water sprayer for cleaning large equipment <br /> • Face shield <br /> • Splash protection/apron/TyvekTM <br /> [PFAS Project]: Use uncoated HDPE suits (e.g., certain Tyvek° products) <br /> • Waste containers for IDW(see SWE-FSOP-802) <br /> • Paper towels <br /> • Clean tap water <br /> [PFAS Project]: PFAS-free potable water <br /> • Distilled water <br /> [PFAS Project]: Laboratory-certified PFAS-free deionized water <br /> • Garbage bags <br /> • Plastic sheeting <br /> 4.0 Procedures <br /> Procedures are provided for: <br /> • Pre-fieldwork tasks (Section 4.1) <br /> • Decontamination relative to four different aspects of work(Section 4.2 to 4.6) <br /> Document control (Section 4.7) <br /> 4.1 Pre-Fieldwork Tasks <br /> Identify an onsite decontamination area(s) for small items (e.g., sampling equipment, hand tools, etc.) as <br /> well as larger equipment such as drill rigs and tooling, trucks, loaders, excavators, and others. Select the <br /> area(s) so that decontamination fluids and soil wastes can be managed in a controlled area with minimal <br /> risk to the surrounding environment. <br /> Decontamination is critical for maintaining the integrity of a sampling program.Check equipment carefully <br /> prior to sampling, and if there is any doubt about the effectiveness of the decontamination, repeat the <br /> decontamination process as an extra precaution. <br /> Decontaminate all non-disposable sampling equipment prior to use. Decontaminate industrial equipment <br /> used in investigation such as geophysical equipment, drill rigs and tooling, and others before their use at <br /> a site. <br /> If equipment will not be used immediately, establish means of storage that maintain the cleanliness of <br /> equipment.That may be suspending equipment off the ground or wrapping in a protective material. <br /> Identify the types and locations of IDW containers before generating IDW from decontamination <br /> activities. <br /> Page 6 of 10 <br />