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f r. <br /> 8 <br /> Soil samples will be collected at five foot intervals, at <br /> changes in lithology and intervals of obvious contamination <br /> in order to develop a complete profile of soil contamination. <br /> The soil samples shall not be composited. Soil borin <br /> ll <br /> extend through the entire interval of contaminated soil wind <br /> will terminate if saturated soil interval is encountered. <br /> 4 2. Sample Collection During Tank Removal <br /> Soil samples will be collected <br /> removal as soon as passible after <br /> I ' of the tank. Where feasible, all preparations for <br /> 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 stainless <br /> steel or brass cylinder at least three inches long by one <br /> inch in diameter. From 3 to 24 inches of soil will be <br /> �= removed from the immediate <br /> f to be taken and the cylinder then surfacepoundarea where the sample is <br /> with <br /> a wooden mallet, bulk density driver, ore other decontaminated <br /> driving device. No head space will be <br /> s cylinder once the sample is collected. Care oil] be taresent kenthe fio <br /> avoid contamination of both the inside and outside of the <br /> scylinder as well as its contents. During samplirg, latex <br /> gloves will be worn to prevent cross contamination with other <br /> samples. One pair of disposable gloves will be dedicated <br /> o <br /> to each sample collected. <br /> r" Once the sample is col.lectGu each end of the <br /> be covered with aluminum foil or teflon tap cylinder will <br /> d then c <br /> with a polyethylene lid, taped, and labeled The sampleappe <br /> then be individually sealed in a ziplock bay and immediately <br /> Placed in an ice chest containing dry ice or frozen "blue <br /> ice" fo: delivery to a state certified laboratory. Sample <br /> identification, storage and transportation will be conducted <br /> as outlined in the <br /> Previous section. <br /> M• 3. Sampling from Soil Piles or Shallow Soil Pits <br /> Soil samples will be collected and transported from excavated <br /> material in the manner described in theprevious section, <br /> however, a backhoe will not be utilized. If composite <br /> samples are collected, four brass cylinders will be collected <br /> for every 5o cubic yards of material to be sampled unless <br /> otherwise specified by the lead regulatory agency. The <br /> samples will be composited by the state certified analytical <br /> laboratory personnel prior to testing. <br /> a. <br /> z Jill <br />