2008-02-28_REPORT - C1981028

• Permit No: C1981028
• IBM Index Class Name: REPORT
• Doc Date: 2/28/2008
• Doc Name: 2007 Annual Hydrology and Reclamation Report
• From: Coors Energy Company
• To: DRMS
• Annual Report Year: 2007
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

• •
Table 9. Comparison of Total Vegetation Cover and Total Herbaceous Production
by Location and Year at the Keenesburg Mine
•
Total Vegetation Cover
Location 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Predictive E uation Value

Os Doti Sand R.A.
25.00
51.40
43.20
42.80
45.00
50.20
35.80
48.80
22.60
SS.80
34.93
40
60 23.31 36.45
1985 Reclamation 21.00 47.60 31.20 24.20 40.20 .
1986 Reclamation 24.00 47.80 37.47 25.20 44.20
1987 Reclamation 24.00 46.00 37.73 26.80 43.80
1995 Reclamation 33.40 41.50 25.82 48.60 23.20 39.00 39.47
1997 Reclamation 33.40 22.80 38.60 23.20 43.60 40.53
1998 Reseed/Interseed 46.40 43.60 51.00 29.80 40.67 46.40 57.60 45.60 56
40
1999 Reclamation 27.60 32.80 S 1.40 42.20 .
54
20
2000 Reclamation .

002 Reclamation 49.60 46.60 57.40

2003 Reclamation 53.00 39.80 45.60
31.80 52.60
Total Herb. Production
cation 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
redicdve E uation Value

Os Doti Sand R.A.
56.4
301.6
n/a
55.36
109.65
86.53
57.44
119.71
26.28
130.21
56.96
117
80 40.11 165.33
1985 Reclamation 87.3 480.0 n/a 47.80 165.45 .
1986 Reclamation 114.4 383.9 n/a 80.71 152.67
1987 Reclamation 135.4 497.4 n/a 79.57 179.84
1995 Reclamation 108.71 127.05 93.65 199.55 52.13 148.99 118.38
1997 Reclamation 122.24 87.89 242.71 61.15 163.05 108.75
1998 Reseed/Interseed 67.44 104.40 186.33 79.08 148.51 172.52 94.11 121
17 115
75
1999 Reclamation 142.08 110.05 107.11 .
128
99 .
150
84
2000 Reclamation . .
2002 Reclamation 86.72 174.60 125.55
2003 Reclamation 184.70 137.99 99.87
notes: Total ve¢etatinn cove r in nercent !0/1 107.88 135.5 1
Total herbaceous production in grams per square meter
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Coors Energy Company Keenesburg Mine Page 38
2007 Revegetation Monitoring Report