2010-12-27_REVISION - C1981019 ‎(3)‎

• Permit No: C1981019
• IBM Index Class Name: Revision
• Doc Date: 12/27/2010
• Doc Name: Updated Dec 10 2007 Phase II Bond Release Evaluation
• From: Colowyo/Cedar Creek
• To: DRMS
• Type & Sequence: SL4
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

Table of Contents
1.0 Introduction ............................................................................................ ............................... 1
2.0 Methodology for Vegetation Sampling / Comparison Methods ............ ............................... 4
2.1 Sample Site Selection / Location ............................................................ ............................... 4
2.2 Determination of Ground Cover ............................................................. ............................... 5
2.3 Sample Adequacy Determination ........................................................... ............................... 7
2.4 Success Evaluation ............................................................................... ............................... 7
3.0 Results ..................................................................................................... ............................... 9
3 .1 Phase II .............................................................................................. ............................... 9
3 .2 Reference Areas ................................................................................... ............................... 9
3.2.1 Mountain Shrub Reference Area .......................................................... ............................... 9
3.2.2 Sagebrush Reference Area ............................................................... ............................... 10
4.0 Conclusions ............................................................................................ ......................:........ 16
5.0 Literature Cited ..................................................................................... ............................... 17
In -Text Tables, Charts, Figures, and Maps
Table P — Precipitation at the Colowyo Mine, 2001 - 2007 ............................... ............................... 3
Chart P — Precipitation by Growing Season at the Colowyo Mine, 2001 - 2007 .. ............................... 3
Figure1 ..................................................................................................... ............................... 6
Chart 1— Average Ground Cover by Lifeform - 2007 ................................... ............................... 11
Chart 2 — Relative Ground Cover (Composition) by Lifeform - 2007 .............. ............................... 11
Table 1— Average Ground Cover by Lifeform - 2007 ........................................................... ;........ 12
Table 2 — Relative Ground Cover (Composition) by Lifeform - 2007 ............... ............................... 14