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• Bedrock boreholes will be approximately seven inches in diameter. Bedrock well <br /> completions will involve the cementing of nominal four-inch ID fiberglass or steel well <br /> casing in the borehole from ground surface to the top of the well completion interval. <br /> The completion interval will generally be drilled out once the cement has set. The <br /> geologic formations allow the completion interval to be left as an open hole. <br /> Alluvial boreholes will be approximately four inches in diameter. Piezometer <br /> completions will involve the installation of slotted two-inch ID PVC pipe into the <br /> borehole and subsequent backfilling of the annulus with gravel material. <br /> Geophysical logging will be undertaken at selected bedrock well boreholes prior to <br /> installation of well casing. Parameters logged will be density, resistivity, gamma ray, <br /> sonic and caliper. <br /> The dimensions of the test pits dug in the alluvial materials will vary depending on <br /> the depth. The maximum depth is estimated to be 12 feet. All test pits will be dug <br /> using a backhoe. <br /> a <br /> • <br /> i <br /> PR-31-14 -14- <br /> 6/10/83 <br />