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,N'irtrw" <br /> WHF Lnvirorunentul Consciltants, Inc. <br /> Samplirtg Protocol <br /> Drilling <br /> permits will be obtained as necessary for all wells (including burings)before <br /> drilling begins. The soil boring will be acccmplished using a mobile mounted <br /> drilling rig employing the use of a hollow stem flight auger no fess than 6 314- <br /> inch <br /> i.d. and 10 718-inch o.d. <br /> All drilling equipment will be thoroughly stearrti-cleaned before drilling begins, <br /> to prevent the introduction of contamination from off site, and betwe;n borings <br /> to prevent cross contamination. <br /> The borings will be lodged) under the direct supervision of a registered <br /> engineering geologist using the Unified Soil classification System. The color, <br /> texture, moisture, plasticity (if applicable), consistency of the earth materials, <br /> cteristics, and any evidence of <br /> blow counts, pertinent soil or bedrock charawhich <br /> contamination will be noted. All water-bearing zones and the depths at w <br /> they were encountered will be noted on these logs- <br /> All borings will be drilled in such a manner as to prevent cross contamination <br /> between strata. Exploratory soil borings within the unsaturated zone will be <br /> backfilled with a concrete slurry mixture. <br /> Borings into the saturated zone will be drilled to a maximum of 20 feet beneath <br /> the top of the aquifer being explored. Any perching layers encountered will be <br /> investigated to a maximum thickness of 5 feet and will be backfilled with <br /> concrete slurry, after a bentonite seal has been placed. If a deeper aquifer is to <br /> be investigated, conductor casing will first be grouted into place to seal off the <br /> upper aquifer(s), in series, if necessary, and drilling will proceed through the <br /> conductor casing after the grout has been allowed to set Oroperly. If evidence <br /> of contamination is noted during the drilling, the drilling will be halted until the <br /> responsible professional determines the advisability of dccper drilling. <br /> Upon termination, the boring into the saturated zone will he completed as a <br /> monitoring well and backfilled with concrete grout, after a bentonite seal has <br /> " been placed. The boring <br /> for inclttile d diameter of the wing ell gas�gbe of a to becusedter at bast 6 <br /> inches greater than t <br />