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SOP No. 10.0 Decontamination of Sampling Equipment <br />4.0 EQUIPMENT LIST <br />The following is a list of equipment that may be used to perform decontamination: <br />• Alconox detergent (or equivalent) <br />• Brushes <br />• Wash tubs (minimum of 3) or 5-gallon buckets (minimum of 3), as necessary <br />• Scrapers, as necessary <br />• Steam cleaner or high-pressure sprayer (portable), as necessary <br />• Sponges <br />• Squirt bottles <br />• Chemical-free paper towels or Kimwipes <br />• Potable tap water <br />• Deionized or distilled water <br />• Garden type water sprayers <br />• 500 mL or 1L spray bottles <br />• Plastic trash bags <br />• Plastic sheeting and clean plastic wrap/bags <br />5.0 PROCEDURE <br />5.1 DECONTAMINATION <br />5.1.1 Sampling Equipment <br />The following steps will be used to decontaminate small sampling equipment, such as bailers, <br />stainless steel trowels, bowls, spoons, etc.: <br />• Personnel will dress in suitable safety equipment to reduce personal exposure. <br />• Set up a decontamination area with plastic sheeting, as necessary. <br />• Gross decontamination on equipment will be scraped off at the sampling site. For most <br />equipment (e.g. shovels, bailer cord) during pre-mining activities, this is sufficient for <br />decontaminating procedures. <br />• Equipment that will not be damaged by water (e.g. YSI sonde, surface water collectors) will <br />be rinsed, washed, or sprayed with D.I. water and a brush if necessary, and then wiped clean <br />with a paper towel. Spray water may be collected by paper towels and disposed of <br />appropriately. <br />4/23/07 Page 2 of 6 R Squared Inc. <br />Attachment A