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SECOR INTERNATIONAL INCORPORATED <br /> STANDARD PROCEDURE FOR <br /> EQUIPMENT DECONTAMINATION <br /> Equipment that could potentially contact subsurface media and compromise the Integrity <br /> of the samples Is carefully decontaminated prior to drilling and sampling Drill augers and <br /> other large pieces of equipment are decontaminated using high pressure hot water spray <br /> Samplers, groundwater pumps, liners and other equipment are decontaminated in an <br /> Alconox scrub solution and double rinsed In clean tap water rinse followed by a final <br /> distilled water rinse <br /> The rinsate and other wastewater are contained In 55-gallon DOT-approved drums, <br /> labeled (to Identify the contents, generation date and project) and stored on-site pending <br /> waste profiling and disposal <br /> IConocoPhilhpslRetail Sites1111931Reports111193 Off-Site Well Install 1-05 doe <br />