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3T Bkm CI I N C <br /> 3.0 SOIL SAMPLING PROTOCOL <br /> 3.1 Soil Sampling with Dnll Rig <br /> A two and ane-half-inch diameter split-spoon sampler fitted with three six-inch brass <br /> sample tubes will be used to collect samples In each borehole, samples will be collected <br /> at 10 foot intervals After drilling to each sampling depth, the sampling apparatus will be <br /> inserted into the hollow auger and driven into the undisturbed soil beneath the borehole <br /> Upon recovery, the lower two sample tubes, designated A and B, will be sealed by <br /> covering with aluminum foil, capping with plastic and sealing with cloth tape This sample <br /> recovery method minimizes head space in the sample tubes The samples will then be <br /> stored on ice pending delivery to a certified laboratory for chemical analysis and <br /> accompanied by appropriate chain-of-custody documents The material in the third tube <br /> and in the sample "shoe" will be examined and described, then discarded Sample <br /> descriptions will include lithology, moisture content, staining and odor Samples will also <br /> be checked with an Organic Vapor Meter (OVM) Lithologic logs for each borehole will be <br /> compiled utilizing the sample descriptions <br /> The sampler will be washed with a non-phosphate cleaner and double rinsed with water <br /> after each use Auger flights will be steam cleaned after drilling each borehole This will <br /> assure that contamination is not transferred to other boreholes The cleaning will take <br /> place on established cleaning sites and the effluent will be contained <br /> Uncontaminated boreholes (as determined by OVM filed tests) will be backfilled with the <br /> same material or cuttings extracted from the hole during drilling after placing five feet of <br /> bentonite in the bottom of the hole Boreholes found to have contaminated soil will be <br /> backfilled with a cement and sand slurry containing no more than 5 percent bentonite The <br /> cuttings from these holes will be placed in U S Environmental Protection Agency <br /> (USEPA)-approved, 55-gallon barrels with lids, stored onsite pending laboratory analysis <br /> APPENDIX it <br /> 19150011 030 3 <br />