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ATC Associates Inc Quality Asstrance/Quality Control Plan Revised 1998 Prior to arriving at the sample site, the drill nglaugers will be steam cleaned and all sample equipment will be cleaned Cleaning will be conducted on-site on all sampling equipment between each sample interval Sohl samples will be obtained using a California modified spht-spoon sampler containing three 6-inch long, 2-inch diameter brass tubes The sampler will be driven 18-inches ahead of the hollow stem auger by a 140-pound hammer with a 34-inch drop in accordance with American Society for Testing and Materials(ASTM)Methods D 1586-84 for split barrel sampling of soul and D 1587-83 for thin-walled tube sampling of soils The blows required to drive the sampler each 6-inch interval will be recorded on the boring log The sampler will be removed from the boring and opened to reveal the brass tubes The bottom tube will be sealed with alumnnum foil or teflon tape and plastic end caps, taped and labeled with the following information • u date and time u project ID u sample ID u name of sampler u type of analysis to be performed This sample will be immediately placed into a cooler containing dry ice or frozen chemical ice A "high-low" temperature recording thermometer will accompany sample shipments to ensure proper temperature maintenance The samples will be delivered to a state certified laboratory following under chain-of-custody protocol within 48 hours of sampling, whenever possible Soil in the uppermost brass tube will be described according to ASTM standard practice for description and identification of soils (ASTM D-2488-84) Stratigraphic, genetic and other data/interpretations will also be recorded Soil properties may also be determined from the middle brass tube and from the sampler shoe Alternatively the second sample tube may be i