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TABLE 2 <br />Summary of Watershed Parameters and Design Statistics for Mine Entrance Haul Road Ditches <br />Within the Permit Area Including Mine Entrance Road, Seneca II-W Mine, Ro utt County, Colorado <br />Watershed Parameters <br />Hydraulic Design Parameters <br />!V <br />~/`. <br />\~ <br />Elevation Peak Discharge Average Flow Bottom <br />Drainage Area Length Difference 10-Yr., 24-Hr, Slope Depth Velocity Width <br />Ditch No, (Ac) (Mi) (Ft) CN Storm (CFS) (Ft/Ft) (Ft) (FPS) Type (Ft) <br />MERD-ME1 1.0 0.09 10 89 0.7 0.01 0.42 1.44 V (1) <br />MERD-ME2 113.8 1.11 620 70 3.56 0.034 0,23 2.75 Trapezoid 5 <br />MERD-ME3 1.5 0.19 50 89 1,1 0.05 0,36 2.92 V (1) <br />MERD-ME4 412.7 1.25 835 70 32.0 0.06 0,28 4,25 Trapezoid 10 <br />MERD-MES 3.0 0.62 180 89 1.97 0.06 0,43 3.59 V (1) <br />Note: All ditches designed with SEDCAD and Mannings n = 0.03 except riprapped <br />(1) Road safety berm ditch. <br />