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ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan s <br /> Revised March 1998 <br /> sewer. Drummed water will be labeled with the source of the water to help ensure appropriate disposal <br /> based on contamination levels. <br /> f <br /> 11.0 SOIL SAMPLING PROTOCOL <br /> 4 <br /> 11.1 Sample Collection During Drilling Activities <br /> A proposal will be submitted to the lead regulatory authority with proposed boring/sampling <br /> locations. The exact location and number of borings at each site will be determined in the field <br /> i <br /> by the Project Geologist/Engineer. 9 <br /> i� <br /> Prior to arriving at the sample site, the drill rig/augers will be steam cleaned and all sample <br /> equipment will be cleaned. Cleaning will be conducted ori-site on all sampling equipment <br /> between each sample interval. <br /> i <br /> Soil samples will be obtained using a California modified split spoon sampler containing three <br /> 6-inch long, 2-inch diameter brass tubes. The sampler will be driven 18-inches ahead of the <br /> hollow stem auger by a 140-pound hammer with a 30-inch drop in accordance with American <br /> Society for Testing and Materials{ASTM}Methods D'1586-84 for split barrel sampling of soil <br /> I� <br /> and D 1587-83.for thin-walled tube sampling of soils. The blows required to drive the sampler <br /> each 6-inch interval will be recorded on the boring log. The sampler will be removed from the <br /> boring and opened to reveal the brass tubes. The bottom tube will be sealed with aluminum <br /> foil or teflon tape and plastic end caps, taped and labeled with1he following information: <br /> i� <br /> ✓ date and time ie <br /> ✓ project ID <br /> ✓ sample ID <br /> ✓ name of sampler <br /> ✓ type of analysis to be performed <br /> �p <br /> W:1Admin\Shc11s1QAQC-98.D0C <br /> 'r <br />