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providing stability to the borehole. Soil borings that will be completed as monitoring wells will be drilled <br />with 10 to 12-inch diameter augers. <br />Soil cuttings produced during drilling will be placed in DOT-approved drums, sealed, labeled <br />appropriately, and placed in a designated area on-site. The disposition of each drum will be determined <br />upon completion of laboratory analyses of the soil samples. The soil cuttings and containers will remain <br />the responsibility of Metropolitan Stevedore. <br />B.1.2 Soil Sampling Procedures <br />Relatively undisturbed soil samples will be obtained with a Dames & Moore Type-U split barrel <br />sampler fitted with 2.5-inch diameter, 3-inch long stainless steel rings. Samples will be collected from <br />borings at 0.0, 1.5, 3.0, 4.5, 6.0, 7.5, 10.0-feet, and then at 5-foot intervals to an estimated total depth <br />of 20 feet. Samples collected from near the surface (within the first foot) and from the capillary fringe <br />(estimated to be approximately 7.5 feet) will be submitted for analysis. <br />Sampling of the soil borings will be completed through the hollow stem of the augers. The <br />sampler will be driven 18 inches or until refusal into undisturbed soil below the bit on the lead auger <br />using a 140-pound hammer dropping 30 inches. Hammer blows required to drive the sampler each 6-inch <br />increment of the 18-inch interval will be recorded on the boring log. The sampler will then be lifted from <br />within the auger and removed from the leading end of the drill rods. The sampler tip and waste barrel <br />will be removed, and the split barrel separated allowing removal of the sample rings. <br />Sample rings will be separated with a clean stainless steel knife. The exposed ends of the rings <br />will be fitted with Teflon sheets and secured with tight-fitting plastic end caps. Appropriate sample labels <br />will be affixed to the end caps and filled out to contain the following information: boring number; sample <br />location; sample number; sample depth; date of sampling; sample collector's initials; job number; and <br />name of the facility. A minimum of two rings will be retained from each sample interval. These samples <br />will have the same identification numbers except for postscripts "A" and "B". Sample "B" will be <br />retained for chemical testing when possible, and sample "A" will be retained for future consideration <br />(i.e., physical testing, duplicate samples, or further chemical testing). <br />PROP06.005 <br /> B-2 <br />DAMES Sz_ MOORE