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Appendix C: Standard Operating Guideline <br />Equipment Decontamination <br />C.1 Introduction <br />This guideline describes field procedures typically followed by Kennedy/Jenks Consultants <br />personnel during the decontamination of sampling and monitoring equipment. Proper <br />decontamination procedures minimize the potential for cross-contamination among sampling points <br />on a single site or between separate sites. <br />C.2 Equipment <br />Two or three containers (e.g., 5-gallon buckets, or 5- or 10-gallon plastic tubs) for dip rinsing, <br />washing, and collection of rinse water. <br />Two or three utility brushes or test tube brushes for removal of visible contamination. A test tube <br />brush (or similar) can be stapled to the end of a dowel and used to clean the inside of a bailer. <br />Non-phosphate Alconox or Liquinox to be mixed with potable or distilled water. <br />Rinse solutions, such as deionized or distilled water, and/or tap water. Deionized water is <br />preferable to distilled water because the deionization process typically results in greater removal <br />of organic compounds. <br />Multi-gallon storage containers filled with potable water to be used for rinsing or washing. <br />Spray bottles, squirt bottles, or garden sprayers to apply rinse liquid. A separate bottle should <br />be used for each liquid. <br />Solvex or neoprene gloves that extend, as a minimum, halfway up the forearm. In cooler <br />weather, it is advisable to use different resistant chemicals neoprene gloves that provide better <br />insulation against cold temperatures. <br />Paper towels to wipe off gross contamination. <br />Garbage bags, or other plastic bags, and aluminum foil to wrap clean sampling equipment after <br />decontamination, to store sampling equipment or and to dispose of decontamination debris. <br />Sample bottles for rinsate blanks. For these blanks, Laboratory Type II (millipore) water should <br />be used. Purified water from the selected analytical laboratory is recommended. This water is <br />often filtered and boiled to remove impurities. <br />DOT-approved container (e.g., 55-gallon drum) to store contaminated wash and rinse water. <br />Contained decontamination should be labeled appropriately. <br />Steam cleaner with power source and water supply. <br />Additional Soil and Groundwater Sample Work Plan, 1 <br />BNSF Mormon Yard, Stockton, CA <br />599020 00_rnor, -i,_platudlappc sooequipcfecon acpt chng wp hoc