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Testing and Materials (ASTM) Methods D 1586-84 for split <br /> . barrel sampling of soil and D 1587-83 for thin-walled tube <br /> sampling of soils. The blows required to drive the sampler <br /> each six inch interval will be recorded on the boring log. <br /> The sampler will be removed from the boring and opened to <br /> reveal the brass tubes. The bottom tube will be sealed with <br /> aluminum foil and plastic end caps, taped and labeled with <br /> the following information; date, time, project ID, sample <br /> ID, name of sampler and type of analysis. This sample will <br /> be immediately placed into a cooler containing dry ice or <br /> frozen chemical. A "high-low" temperature recording <br /> thermometer will accompany sample shipments to ensure proper <br /> temperature maintenance. The samples will be delivered to <br /> a state certified laboratory following under chain-of- <br /> custody protocol within 48 hours of sampling, whenever <br /> possible. <br /> Soil in the uppermost brass tube will be described according <br /> to ASTM standard practice for description and identification <br /> of soils (ASTM D-2488-84). Stratigraphic, genetic and other <br /> data/interpretations will also be recorded. Soil properties <br /> may also be determined from the middle brass tube and from <br /> the sampler shoe. Alternatively the second sample tube may <br /> be used with the uppermost tube for preparation of <br /> duplicates. These field observations will be noted on a log <br /> prepared for each boring/well. <br /> During sampling, latex gloves will be worn to prevent cross- <br /> contamination with other samples. The disposable gloves <br /> will be discarded after collecting samples from each 18-inch <br /> sample drive. <br /> Soil samples will be collected at five foot intervals, at <br /> significant changes in lithology and intervals of obvious <br /> contamination in order to develop a complete profile of soil <br /> contamination. <br /> 11.2 Sample Collection During Tank Removal <br /> Soil samples will be collected as soon as possible after <br /> removal of the tank. Where feasible, all preparations for <br /> u soil sampling will be made prior to tank removal. Soil <br /> samples collected from a backhoe bucket or directly from the <br /> excavation floor will be collected in a thin-walled <br /> stainless steel or brass cylinder at least three inches long <br /> by one inch in diameter. From 3 to 24 inches of soil will <br /> be removed from the immediate surface area where the sample <br /> is to be taken and the cylinder then pounded into the soil <br /> with a wooden mallet, bulk density driver, or other <br /> decontaminated driving device. No head space will be <br /> present in the cylinder once the sample is collected. Care <br /> will be taken to avoid contamination of both the inside and <br /> outside of the cylinder as well as its contents. During <br />