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i <br /> 0 <br /> ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised March 1998 <br /> All withdrawn groundwater will be stored on-site in 55-gallon waste drums unless permission is <br /> granted by the appropriate regulatory agency to discharge the water to the ground surface or <br /> sanitary sewer. Drummed water will be labeled with the source of the .water to help ensure <br /> appropriate disposal based on contamination levels. <br /> i <br /> 11.0 SOIL SAMPLING PROTOCOL <br /> 11.1 Sample Collection During Drilling Activities <br /> A proposal will be submitted to the lead regulatory authority with proposed <br /> boring/sampling locations. The exact location and number of borings at each site will be <br /> determined in.the field by the Project Geologist/Engineer. <br /> Prior to arriving at the sample site, the drill rig/augers will be steam cleaned and all <br /> sample equipment will be cleaned. Cleaning will be conducted on-site on all sampling <br /> equipment between each sample.interval. <br /> Soil samples will be obtained using a California modified split-spoon sampler containing <br /> three 6-inch long, 2-inch diameter brass tubes. ' The sampler will be driven 18-inches <br /> ahead of the. hollow stem auger by a 140-pound hammer with a 30-inch' drop in <br /> accordance with American Society for Testing and Materials (ASTM) Methods D 1586- <br /> 84 for split barrel sampling of soil and D 1587-83 for thin-walled tube sampling of soils. <br /> The blows required to drive the sampler -each 6-inch interval will be recorded on the <br /> boring log. <br /> The sampler will be removed from the boring and opened to reveal the brass <br /> tubes. The bottom tube will be sealed with aluminum foil or teflon tape and plastic end <br /> caps, taped and labeled with the following information: <br /> W:\Admin\ShellslQAQC-98.DOC <br /> 10 <br />