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Drill cuttings will be logged continuously for <br /> characterization of contamination and soil type using the <br /> Unified Soil Classification System. Descriptions of soils <br /> encountered will be recorded on a boring log and included <br /> within the Phase I report. Soil samples will be collected <br /> from the boring at five foot intervals. The samples will <br /> be collected using a 2-inch diameter by 18-inch long split <br /> spoon sampler lined with 6-inch long thin walled brass soil <br /> tubes. The sampler will be driven its entire length into <br /> undisturbed soil by a 140-pound drop or hydraulic hammer. <br /> Sample collection will begin at a depth of eight feet below <br /> ground surface, ten feet along the boring length. No soil <br /> samples will be collected for laboratory analysis below the <br /> groundwater table, if encountered. <br /> Soils encountered will be monitored for organic vapors by <br /> placing a small amount of representative material in a <br /> sealed container, then measuring the concentration of <br /> volatiles collected in the head spaced of the container with <br /> a photoionization detector (PID) calibrated to the benzene <br /> molecule. The values obtained at each measurement point <br /> will be recorded on the boring logs . Soil cuttings <br /> generated during the drilling process will also be screened <br /> for the presence of volatile organics using a PID. d { <br /> If no contamination is observed in the field, soil samples �if 2 <br /> submitted for analysis will be those collected at 15 feet, <br /> 20 feet, and 25 feet along the boring length. The <br /> corresponding depth below ground surface would be 12, 17, <br /> _ and 22 vertical feet. If contamination is observed, samples <br /> may be selected based on obvious signs of contamination <br /> ( i.e. PID readings and soil discoloration) . The sample <br /> recording the highest PID reading will be analyzed to <br /> determine contamination levels. Two "clean" confirmation <br /> samples, representing a 10 foot interval, will be collected <br /> and analyzed to determine the vertical extent of the soil <br /> contamination, if possible. <br /> Samples will be collected, preserved, and transported under <br /> chain-of-custody in accordance with WaterWork ' s Soil <br /> Sampling Protocol (Appendix B) . Select samples will be <br /> analyzed for benzene, toluene, xylenes, and ethylbenzene Y <br /> (BTXE) , total petroleum hydrocarbons (TPH) as gasoline, and <br /> organic lead by appropriate EPA and DHS methodologies . <br /> Sequoia Analytical Laboratories will perform the analyses. <br /> The soil cuttings will be covered with 6 mil plastic on-site <br /> or placed in a 55-gallon drum. Soil cuttings will be <br /> properly disposed of in a timely and appropriate manner <br /> after reviewing the analytical results. The storage area <br /> will be posted indicating the source and contents of each <br /> pile or drum. <br /> 4 <br />