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<br /> <br />' <br /> 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 consi~:ted <br />~ , of the following: Holes 1 and 2 were drilled at the site of a proposed <br /> extention to tailings pon d q3. 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 /> <br />' <br />and/or boulders <br />f br <br />k 1I <br />k <br />Diffi <br />lt d <br />illi <br />d f <br />( <br />~G10~ <br />i <br /> o <br />en <br />o roc <br />. <br />cu <br />rom ~/ <br />. <br />r <br />ng was exper <br />ence <br /> depth 24.5 to 31 feet in hole 2 (elevation 9387.5 to 9381 feet). Free <br /> 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 />' <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 />' of berm material consisting of clayey, silty glacial gravel with cobt~les <br />and large boulders. This material was excavated from west of the pored <br />site and is typical of the glacial moraine valley deposit. Below they 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 /> <br />-2- <br />