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<br />
<br />1.3 Background and Standards for Success
<br />Information regarding dates of reclamation earthwork activities and seeding dates are provided in
<br />other supporting documents. The following Big Sagebrush Shrubland seed mixture was implemented on
<br />all Munger Canyon Mine reclaimed areas.
<br />
<br />The bond release success criteria for the Phase III Release Block of the Munger Canyon Mine are
<br />derived from vegetation cover and herbaceous production comparisons to the Sagebrush Reference Area
<br />(established in 1980) in addition to an independent woody plant density standard. Noxious weed cover
<br />may not count towards vegetation success criteria. Noxious weed determination is based on the Colorado
<br />state noxious weed list.
<br />
<br />Seeds
<br />(per Pound)
<br />Seeding
<br />Rate
<br />(PLS / Acre)
<br />% of
<br />Lifeform
<br />Seeds
<br />(per Sq. Foot)
<br />Seeds
<br />(per Acre)
<br />GRASSES
<br />Achnatherum hymenoides Indian Ricegrass 141,000 0.50 7.41 1.62 70,567
<br />Elymus lanceolatus var. riparius Riparian Wheatgrass 156,000 0.50 8.20 1.79 77,972
<br />Hilaria jamesii Galleta 159,000 0.50 8.36 1.83 79,715
<br />Leymus cinereus Basin Wildrye 130,000 0.50 6.83 1.49 64,904
<br />Leymus salinus Salina Wildrye 130,000 0.50 6.83 1.49 64,904
<br />Pascopyron smithii Western Wheatgrass 110,000 0.50 5.78 1.26 54,886
<br />Poa secunda / canbyi Sandberg Bluegrass 926,000 0.20 19.47 4.25 185,130
<br />Sporobolus airoides Alkali Sacaton 1,758,000 0.05 9.24 2.02 87,991
<br />Sporobolus cryptandrus Sand Dropseed 5,298,000 0.05 27.85 6.08 264,845
<br />Total 8,808,000 3.30 100 21.83 950,915
<br />FORBS
<br />Eucephalus glaucus Glaucous Aster 540,000 0.25 20.50 3.10 135,036
<br />Hedysarum boreale Northern Sweetvetch 34,000 1.00 5.16 0.78 33,977
<br />Heliomeris multiflora Showy Goldeneye 926,000 0.13 17.58 2.66 115,870
<br />Linum lewisii Lewis Flax 293,000 0.25 11.12 1.68 73,181
<br />Penstemon palmeri Palmer's Penstemon 610,000 0.25 23.16 3.50 152,460
<br />Penstemon strictus Rocky Mountain Penstemon 592,000 0.25 22.48 3.40 148,104
<br />Total 2,995,000 2.13 100 15.12 658,627
<br />SHRUBS
<br />Atriplex canescens Fourwing Saltbrush 52,000 0.50 2.94 0.60 26,136
<br />Atriplex confertifolia Shadscale Saltbush 65,000 1.00 7.36 1.49 64,904
<br />Chrysothamnus nauseosus Rubber Rabbitbrush 400,000 0.25 11.33 2.30 100,188
<br />Krascheninnikovia lanata Winterfat 57,000 1.00 6.46 1.31 57,064
<br />Rhus trilobata Skunkbrush Sumac 20,000 0.50 1.13 0.23 10,019
<br />Seriphidium tridentatum tri.Basin Big Sagebrush 2,500,000 0.25 70.78 14.35 625,086
<br />Total 3,094,000 3.50 100 20.28 883,397
<br />Overall Total 14,897,000 8.93 57.23 2,492,939
<br />Munger Canyon Mine - Big Sagebrush Shrubland Seed Mix
<br />CEDAR CREEK ASSOCIATES, Inc.5 Munger Canyon Mine - 2016
<br />Phase III Bond Release Report
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