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' C The remaining 2 in 20 samples should be used by lab for spiking with reference materials <br /> for internal QC <br /> Other QC procedures can be specified at the project manager's discretion See Table 3-2 <br />' (reference 2) attached <br /> 5 Decontamination of equipment in the field requires a detergent wash, with a distilled water rinse <br /> REFERENCE$ <br />' 1 Soil Sampling Quality Assurance Users Guide, U S EPA Environmental Monitoring Systems <br /> Laboratory, Las Vegas, NV, EPA 600/4-84-043, May 1984 <br />' 2 Preparation of Soil Sampling Protocol Techniques and Strategies, U S EPA, Environmental <br /> Monitoring Systems Laboratory, Las Vegas, NV, EPA 600/4-83-020, August 1983 (PB83-206979) <br /> I 3 Test Methods for Evaluating Solid Waste, U S EPA, Office of Solid Waste and Emergency <br /> Response, Washington, D C, SW 846, July 1982 <br /> 1 <br /> I <br /> I <br /> I <br /> SOP 15 Page 2 of 2 <br /> [W GROUNDWATER <br /> TECHNOLOCY, INC <br /> I <br />