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1.2. Objectives <br />• Two general objectives addressed in this report are: 1) to utilize <br />geomorphic analysis to determine if existing topography at the Eckman <br />Park Mine deviates significantly from the approved post-mining <br />topography, and 2) to utilize engineering and geomorphic analysis to <br />assess the stability of existing topography relative to the approved <br />topography. <br />The first objective is designed to determine whether AOC has been <br />achieved by the regrading process at Eckman Park Mine. Documented <br />geomorphic procedures will be used to develop quantitative measures of <br />existing and approved topographic characteristics. Statistical methods <br />will be used to determine the significance of any differences between <br />these characteristics, and thus whether AOC has been achieved. <br />• The second objective will address the relative stability of existing <br />versus approved topography. Geomorphic and engineering criteria can be <br />used to reveal differences in the erosive power of streamflow between <br />existing and approved topography. In addition, comparison of adjacent <br />unmined area topography with existing topography is made. <br />1.3. Procedure and Analysis <br />Field work on the mine and adjacent areas was performed on September <br />15-17, 1986. Hillslope and channel gradients were surveyed using an <br />electronic distance measuring theodolite. Bed sediment samples were <br />collected from drainage ways for use in engineering calculation of <br />incipient motion and sediment transport. Unmined areas were examined to <br />• <br />3 <br />