PERMFILE64638

• Permit No: C1981071
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: GEOMORPHIC & ENGINEERING ANALYSIS OF COLO YAMPA COAL CO ECKMAN PARK MINE FINAL REPORT
• Media Type: D
• Archive: No

AREA GRADIENT INDEX SAMPLES
EXISTING TOPOGRAPHY
• (continued)
DISTANCE
BASIN LP STREAM OF MOUTH SLOPE CONTRIBUTING AREA
(feet) (percent) (acres) A.G.I.
9/10-1(S1E) 0 2 402 9.6
800 5 356 17.9
1,700 10 311 31.1
3,300 9 138 12.4
3,800 9 114 10.2
4,900 19 84 16.0
6,000 10 12 1.2
9/10-2(S1E) 0 13 255 33.1
750 8 229 18.3
1,500 11 213 23.4
2,250 15 190 28.5
3,750 5 122 6.1
4,500 10 40 4.0
5,250 8 10.8 0.9
•
~ Mean 10.8
Std. Dev. 10.4
Max. 56.7
Min. 0.6
•
A-9