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SOP-003 Standard Operating Procedure Equipment Decontamination Procedures <br />Page 2 of 3 Revision No.1 April 2019 <br /> <br />Sharpe Army Depot <br />3.2 Decontaminating Sampling and Hand-held Equipment <br />1. This section applies broadly to all hand tools (trowels, bowls, hand augers, slide hammer samplers, and other specialized and non-specialized tools), as well as meters and gauges (multimeters, water level indicators, etc.). Remove solid particles from the equipment or material by brushing and rinsing with potable water. This will remove gross contamination. <br />2. For hand-held equipment wash with a brush and a phosphate-free detergent solution (Liquinox or similar laboratory detergent). New wash water/detergent solution will be used at each location, as necessary. <br />3. Rinse equipment thoroughly with potable water. <br />4. Triple rinse the equipment with distilled water. New rinse water will be used at each location. Rinse water will not be used for multiple rinse cycles. <br />5. Unless the equipment is going to be used immediately, it must be wrapped in new aluminum foil, shiny side out, to keep it clean until needed. For large bulky equipment, clean visqueen can be substituted for the aluminum foil. <br />6. Decontamination of tools and equipment must be performed between each sampling location and before leaving the site. <br />7. For bladder pumps used during sampling, insert a new bladder into the pump housing and use new dedicated tubing cut to the required length between each monitoring well sampled. Do not reuse wetted components. Follow the bladder pump manufacturers’ guidelines and specifications for changing wetted components in between sample points. <br />8. For Smeal rigs and variable speed pumps used during well development, all wetted components shall be steam cleaned and rinsed using clean potable water. No rinsate shall be reused. <br />3.3 Decontaminating Large Equipment <br />Drilling equipment (rigs, drill rods, augers, rods, bits, casing, screen, etc.), downhole logging equipment, and other large pieces of field equipment must be high-pressure steam cleaned before and after use. Steam cleaning will be performed at an appropriate decontamination area specified by the field supervisor. The decontamination area shall be capable of containing decontamination fluids and solids. The decontamination fluids shall be managed in accordance with SOP-007, Investigation Derived Waste Management. <br />Decontamination should be performed before arriving at the site and between sampling locations (i.e., boreholes or monitoring wells). All equipment shall be decontaminated before leaving the site. <br />Additionally, the drilling subcontractor has the responsibility of making the drilling rig free of leaks (i.e., hydraulic fluid, oil, gas, etc.) that could contaminate the boreholes. Vegetable based lubricant may be sparingly used on rod shoulders to ease rod breaking upon completion of a borehole. Rod joints should be wiped with a clean cloth to minimize the amount of lubricant on the exterior of the rod. No petroleum, oil, and lubricants (POL) will be used as lubricant.