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TO E RO E K SOP No.002,REv.2 ASSOCIATES,INC. GENERAL EQUIPMENT DECONTAMINATION ..9 PAGE 7 5. Insert the bailer into a clean container of soapy water. Thoroughly rinse the interior of the bailer with the soapy water. If possible, scrub the inside of the bailer with a scrub brush. 6. Remove the bailer from the container of soapy water. 7. Rinse the interior and exterior of the bailer using tap (potable) water. 8. If groundwater contains or is suspected to contain oil, grease, PAH, PCB, or other hard to remove organic materials, rinse equipment with pesticide-grade isopropanol. 9. Rinse the bailer interior and exterior with deionized water to rinse off the tap water and solvent residue, as applicable. 10. Drain residual deionized water to the extent possible. 11.Allow components to air dry. 12.Wrap the bailer in aluminum foil or a clean plastic bag for storage. 13. Containerize the decontamination wash waters for proper disposal. 2.6.2 Downhole Pumps and Tubing 1. Select an area removed from sampling locations that is both downwind and downgradient. Decontamination must not cause cross-contamination between sampling points. 2. Maintain the same level of personal protection as was used for sampling. 3. Evacuate any purge water in the pump and tubing. If possible, dismantle the pump (e.g., bladder pump) to individually decontaminate components or replace disposable parts. 4. Scrub using soap and water and/or steam clean the outside of the pump and, if applicable, the pump tubing. 5. Insert the pump and tubing into a clean container of soapy water. Pump/run a sufficient amount of soapy water to flush out any residual well water.After the pump and tubing are flushed, circulate soapy water through the pump and tubing to ensure that the internal components are thoroughly flushed. 6. Remove the pump and tubing from the container. 7. Rinse external pump components using tap (potable) water. 8. Insert the pump and tubing into a clean container of tap water. Pump/run a sufficient amount of tap water through the pump to evacuate all of the soapy water (until clear). 9. If groundwater contains or is suspected to contain oil, grease, PAH, PCB, or other hard to remove organic materials, rinse the pump and tubing with pesticide-grade isopropanol.