2006-04-11_PERMIT FILE - C1982057A

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 4/11/2006
• Doc Name: Haul Road Construction Summaries
• Section_Exhibit Name: Tab 13 Attachment 13-10
• Media Type: D
• Archive: Yes

• • a
Table 2 Summary of Watershed Parameters and Design Statistics
for Road Ditches Along [he Tie-Across Haul Road
Seneca 11-W Mine, Routt County, Colorado.
Watershed Parameters Hydraulic Design Parameters
Elevation Peak Discharge Average Flow Bottom
Drainage Length Difference 10-Yr; 24-Hr Slope Depth Velocity Nidth
Ditch No. (At) (Ni) (Ft) CN Storm (cfs) (Ft/FU (Ft) (FPS) Type (FU
iA HRD-1 0.7 0.07 15 89 0.5 0.033 0.25 2.i8 Triangular (2)
7A HRD-2 32.1 0.51 230 80 9.9 0.002 0.30 2.88 Trapezoid 10
TAHRD -3 22.4 0.43 170 85 11.2 0.001 0.39 2.44 Trapezoid 10
TAHRD-4 3.D 0.17 30 85 1.7 0.001 0.13 1.24 Trapezoid 10
TAHRD-5 2.8 0.27 185 85 1.6 0.009 0.13 1.17 Trapezoid 10
TAHRD•6 1.4 0.23 60 89 1.1 0.047 0.06 1.65 Trapezoid 10
TAHRD-7 Z.7 0.<6 125 89 1.9 0.047 0.09 2.06 Trapezoid 10
TAHRD-8 9.1 0.27 110 85 5.2 0.047 0.16 3.04 Trapezoid 10
TAHRD-9 16.1 0.32 90 85 9.2 0.050 0.22 3.83 Trapezoid 10
TA HRD -9R 16.1 0.32 90 85 9.2 0.080 0.12 3.25 Trap(riprap) 10
TAHRD•9A 16.1 0.32 90 85 9.2 0.167 0.21 3.10 Triangular (4)
TA XR O-10 9.7 0.14 80 89 7.3 0.020 0.25 2.63 Trapezoid 10
TAHRD -10A 4.9 0.14 25 89 3.7 0.015 0.18 1.87 Trapezoid 10
7AHRD-11 7.0 0.19 58 89 5.3 0.017 0.22 2.22 Trapezoid f0
TAHRD-12 1.0 0.08 10 89 0.8 0.017 0.07 1.06 trapezoid 10
TAHRD-13 3.9 0.23 60 89 2.2 0.014 0.14 1.52 Trapezoid 10
TANRD-14 20.2 0.46 90 85 9.8 0.014 0.33 2.60 Trapezoid 10
TAHRD-15 16.2 0.53 125 65 7.7 0.042 0.31 4.12 Trapezoid 5(1)
TAHRD-16 2.1 0.17 35 89 1.6 0.042 0.12 2.37 Trapezoid 5(1)
TAHRD-17 1.6 0.13 30 89 1.2 0.042 0.10 2.15 Trapezoid 5(1)
TAHRD-18 4.2 0.25 85 85 3.2 0.042 0.55 3.16 Triangular (2)
TAHRD-19 164.9 0.76 207 83 60.8 0.005 2.50 3.88 Triangular (2)
TAHRD-20 14.0 0.33 65 89 9.6 0.009 0.37 2.24 Trapezoid 10
>D TAH RD-21 31.5 0.59 92 89 19.8 0.023 0.43 3.90 Trapezoid 10
t9 TAHRD•22 257.0 1.215 235 83 33.0 0.020 1.05 5.06 Trapezoid 2

~' TAARD•1 3.0 0.15 30 89 2.3 0.040 0.10 2.12 Trapezoid 10

f0 TAARD-2 2.4 0.14 30 89 1.8 0.040 0.09 1.94 Trapezoid 10
a
TASBD-1 0.6 0.15 45 89 0.5 0.047 0.29 2.73 Triangular (3)
°
` TASBD-2 1.1 0.30 75 89 0.8 0.047 0.36 3.19 Triangular (3)

° D-SA 14.3 0.22 120 85 8.1 0.001 1.32 1.33 Trapezoid 2
w
~ Note: Ditches are trapezoidal w ith 10.0 ft bottom and 3H: tY and SH: 1V side slopes (except wh ere noted)
.a
^' Nanning~ g n = 0.030
(1) Trapezoidal ditch with SH: 1V and 2N:1V side slopes.
(2) Triangular ditch with 3H:1V and 2H: 1V s ide slopes.
(3) Safety berm ditch is V-shape d with 3H:1V and 2H:1V side slopes.
(4) Triangular riprap ditch with 3H: 1V side slopes.