2022-10-26_PERMIT FILE - C1981041

• Permit No: C1981041
• IBM Index Class Name: Permit File
• Doc Date: 10/26/2022
• Section_Exhibit Name: Tab 10 Vegetation Information
• Media Type: D
• Archive: No

• Shrub Density and Height
Total shrub density averaged 4.1/10 m2 or 1635 plants per acre.
Five plants were present in the density quadrats. Shadscale is followed
in dominance 12.6 plants/10 m21 by obovate leaf saltbush, black greasewood,
snakeweed, and big sagebrush. See Table 8.
Black greasewood, the tallest shrub, had an average height of
72.3 cm. Obovateleaf saltbush, with an average height of 22.6 cm, was the
lowest in height. Big sagebrush had an average height of 40.0 cm, snake-
weed an average height of 32.4 cm, and shadscale an average height of
28.7 cm. See Table 8.
3.2.3 Greasewood/Shadscale Study Area
This study area is located in the eastern part of Section 28,
T105, R98W, north and east of The refuse disposal. This area is rectan-
gular in shape and encompasses approximately 22 acres. The topography of
the site includes south and west exposures as well as flat terrain along
Coal Creek which drains and flows through the site. Elevations range from
4840 feet to 5000 feet.
This study area will provide a reclamation success standard
for the Cameo No. 1 Mine and the refuse disposal disturbances.
• Cover
Total vegetation cover for the area averaged 44.2 percent.
Rock, litter, and soil cover were all moderate at 20.7, 18.7, and 16.4
percent, respectively. Absolute cover by life form was as follows: shrubs, 6.0
percent; succulents, 0.7 percent; perennial grasses, 0.5 percent; annual
grasses, 18.5 percent; perennial forbs, 0.2 percent; annual forbs, 17.7
percent; and cryptogams, 0.6 percent. See Table 9.
Shrubs provide 14 percent of the total vegetation cover.
Black greasewood was followed in dominance by shadscale and horsebrush, Annual
forbs and annual grasses accounted for 82 percent of the total vegetation cover.
Cheatgrass, with a cover of 18.5 percent, alone accounts for 42 percent of
the Total vegetation cover. Dc•minant annual forbs include: redstem filaree,
African mustard hla,Lcv.lmia a~icicorta, and common blue mustard, al I introduced
weedy species. Prickly pear cactus Opurt,tia pv.Lyacan,tha and hedgehog cactus
~chirtvice~ceu~ #~,ig,Cvchidia•#ua conspicuously contributed 0.7 percent of the
vegetation cover. See Table 8 for other minor species present.
Production
Total herbaceous production of the fifty-two 1 m2 clipped plots
ranged from a low of 0.0 g/m2 to a high of 50.2 g/m and averaged 15.9
g/m2 or 142.0 Ibs/ac. See Table 10. Grasses accounted for 42 percent of
• the total production. Cheatgrass, with a production of 6.7 g/m2, and
'redstem filaree, a weedy forb with a production of 4.9 g/m2, together
accounted for 73 percent of the total production. The rest of the biomass
was contributed by forbs and few perennial grasses.
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