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In conjunction with the field program, in-place surface density and <br /> moisture tests were taken of the pond materials using a Pacific Campbell <br /> Nuclear Density Device. See Table 2 for summary of these results. <br /> The soil conditions encountered during the test drilling consisted <br /> of the following: Holes 1 and 2 were drilled at the site of a proposed <br /> extention to tailings pond #3. These holes encountered 21 .5 to 22 feet <br /> of silty, clayey gravels, with some cobble and broken rock material . Generally <br /> below this depth in the test holes encountered coarser gravel , larger cobbles <br /> and/or boulders of broken rock. Difficult drilling was experienced from <br /> depth 24.5 to 31 feet in hole 2 (elevation 9387.5 to 9381 feet). Free <br /> 0° water was encountered in these test holes at depths of 14 and 26 feet, <br /> respectively (elevations 9396.5 and 9386 feet). <br /> The remainder of the test holes were drilled on top of the existing <br /> tailings pond embankment. At the time of the test hole drilling, the construction <br /> of an earthen berm in front of the sand tailings had been completed. The <br /> test holes drilled on the embankment generally encountered 10 to 32 feet <br /> 0 of berm material consisting of clayey, silty glacial gravel with cobbles <br /> and large boulders. This material was excavated from west of the pond <br /> Site and is typical of the glacial moraine valley deposit. Below the berm <br /> at elevations 9450 to 9424 feet, coarse grained sand tailings were encountered. <br /> Some interbedding of very fine grain slime tailings was noted in the sands. <br /> Large deposits of very fine grained slime tailings were noted in holes <br /> 6, 7A, 8, 9 and 9A, below depths of 25 to 48 feet (elevations 9434 to 9407 <br /> feet). Original ground, consisting of glacial moraine deposits, was encountered <br /> at depths of 23 to 53 feet (elevations 9440 to 9403 feet). These deposits <br /> -2- <br />