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ATC Associates Inc. <br /> Quality Assurance/Quality Control Plan <br /> Revised March 1998 <br /> ✓ date and time <br /> ✓ project ID <br /> ✓ sample ID <br /> ✓ name of sampler <br /> ✓ type of analysis to be performed <br /> This sample will be immediately placed into a cooler containing dry ice or frozen <br /> chemical ice. A "high-low" temperature recording thermometer will accompany sample <br /> shipments to ensure proper temperature maintenance. The samples will be delivered to a <br /> state certified laboratory following under chain-of-custody protocol within 48 hours of <br /> sampling, whenever possible. <br /> Soil in the uppermost brass tube will be described according to ASTM standard practice <br /> for description and identification of soils (ASTM D-2488-84). Stratigraphic, genetic and <br /> other data/interpretations will also be recorded. Soil properties may also be determined <br /> from the middle brass tube and from the sampler shoe. Alternatively the second sample <br /> tube may be used with the uppermost tube for preparation of duplicates. These field <br /> observations will be noted on a log prepared for each boring/well. <br /> During sampling, latex gloves will be worn to prevent cross-contamination with other <br /> samples. The disposable gloves will be discarded after collecting samples from each 18- <br /> inch sample drive. <br /> Soil samples will be collected at 5-foot intervals, at significant changes in lithology and <br /> intervals of obvious contamination in order to develop a complete profile of soil <br /> contamination. <br /> W:\Admin\Sheils\QAQC-98.DOC <br /> 11 <br />