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REP12625
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REP12625
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Entry Properties
Last modified
8/24/2016 11:43:16 PM
Creation date
11/27/2007 12:57:45 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Report
Doc Date
3/25/2004
Doc Name
2003 AHR & ARR Section 9
Permit Index Doc Type
Annual Reclamation Report
Media Type
D
Archive
No
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• 2.3 West Pit <br />2.3.1 WP004 <br />WP004 is comprised of 8.9 acres of moderately sloping revegetation that exhibits aspects from <br />northwesterly, through north, to east. This unit was seeded in 1996 and therefore, has undergone seven <br />growing seasons prior to sampling in 2003. A total of 38 plant taxa were observed in the unit (see Table <br />19) including both musk and Canada thistle. Current annual production across the unit averaged 2,664 <br />pounds per acre in 2003 witfi perennial grasses the dominant category (see Table 1). Ground Dover <br />(Figure 9) in WP004 consisted of 54.1% live vegetation, 1.2% rock, 0.1% standing dead, 22.4% litter, <br />and bare soil exposure of 22.3%. Perennial cover across the unit averaged 51.2% with annual and <br />biennial mver avereging only 2.9%. Dominant taxa were intermediate wheatgress, thickspike <br />wheatgrass, smooth brome (Bromus irrermis), and Siberian wheatgrass with 16.2%, 13.1%, 3.4%, and <br />3.2% average cover, respectively. Woody plant density was determined from 20 beR transects. Density <br />(Table 2) totaled 146 young and mature stems per acre with big sagebrush the dominant woody plant. <br />With regard to diversity, WP004 exhibited 8 perennial grasses and 1 perennial forb with between 3% and <br />50% relative cover. <br />• Unit WP004 currently passes the bond release diversity standard of 3 perennial grasses and 1 <br />perennial fort with between 3°/a and 50% relative cover. This unit should also readily pass both the <br />mver and production bond release comparisons to the reference areas. This unit does not presently <br />meet the woody plant standard of 90% of 1000 stems per acre and will probably not meet this in the <br />foreseeable future due to the heavy competitive grass mver. See Appendix AA -Section 7.4 for a <br />discussion on options and recommendations with regard to woody plant density. As indipted above, <br />both Canada and musk thistle (Carduus nutans) were readily observable within this unit. It is <br />recommended that the unit receive herbicide treatment in the spring of 2004. <br />At present, WP004 is a very good example of an improved pasture g2ssland community that would <br />contribute to the local system as foraging habitat for wildlife (espedally elk), as well as provide a variety <br />of management opportunities for livestock grazing. Assuming the woody plant density issue can be dealt <br />with as discussed in Appendix AA, this unit is a fine pndidate for Phase III bond release evaluation in <br />2005 and 2006. <br />• <br />xanneaot[ energy co. i Colowyo Mine Page 35 Revegetatlon r~lonttoring -2003 <br />
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