2010-03-12_REPORT - C1981019 ‎(7)‎

• Permit No: C1981019
• IBM Index Class Name: REPORT
• Doc Date: 3/12/2010
• Doc Name: 2009 Annual Hydrology & Annual Reclamation Report TOC to Section 8
• From: Colowyo Coal Company
• To: DRMS
• Annual Report Year: 2009
• Permit Index Doc Type: Hydrology Report
• Email Name: JRS
• Media Type: D
• Archive: No

Colowyo Coal Company
2009 Annual Reclamation and Hydrology Report
• Figure 4-1- Colowyo Reclamation Seed Mixture Tables
Table 2.05-7
Reclamation Seed Mixture -Grassland Erosion Control _Grazin land Targeted as Co lowyo Mine - 2008
Lie Seeds/ Rec. PIS Avg.
App. Species Synonym Common Name Origin Form lb. lbs. / acre / sq. at
Agropymn dasystachyum E4ww lanceolatus ssp. lanceolatus Thickspike Wheatgrass N Grass 154,000 1.25 4.4
Agropyron smlthil Pasropyrum smithii Western Wheatgrass N Grass 110,000 1.50 3.8
Agropyron splcaturn inerme PseWoroegnero spxata ssp. lnerme Beardless Bluebunch Wheatgrass N Grass 117,000 2.00 5.4
Agropyron trachycaulum t7ymus trarhycaulus asp. trad ycaLdus Slender Wheatgrass N Grass 159,000 0.75 2.7
Bromus marginatus B-opsis marginatus Mountain Brome N Grass 90,000 1.00 2.1
Bymus dnereus Leymus dnercra Great Basin Wildrye N Grass 130,0 0.50 1.5
Sti virldula New Tame to cocy hassella virldula Green Need rass N Grass 181000 0.75 3.1
Astragalus ci er Gcer MilWetch I Forb 145,000 0.30 1.0
Unum lewisii Lewis Flax N Forb 293,000 0.25 1.7
Atriplexcanescens FourwingSaltbush N Shrub 52,000 1.60 1.9
SMphoricarpos rotundifo ke Mountain Snowberry N Shrub 75,000 0.75 1.3
S ubtotal= 10AS 28.87
Fesce saxlmontana Rocky Mountain Fescue N Grass 680,000 0.50 7.8
v Arhlllea miffifolium Westem Yarrow N Forb 2,770,000 0.10 6.4
Perrslemon strtctus
ocky Mountain Penstemon
R
N
Forb
592 000
0.25
3.4
m Artemssa tridentafa vaseyana Mountain Big Sagetrcush N Shrub 2,500,000 0.50 28.7
A S ubtotal= 1.35 46.26
Grass PLS/ Seeds/R2 Subtotal . 0.25/30.! Porb PLS/ Seeds/K Subtotal =0.9/12.44 Shrub PLS/ Seeds/n2 Subtotal - 2.85/31.9 Torn) 12.00 75.13
Note. Where desirable to draw Elk away from particular locations, fil mut cimmm and/or othertaxa maybe substltued with Orchard Grass (sought by flk)tit tfie quardllyiM q!ad boom.
is omerataT Orchard Grass I Grass 654,000 1.25 18.77
Seed Mix Comments
1) The correct sagebrush seed (Artemisia vaseyana-pauciflora) from sources as close as possible to the Axial
Basin will be requested from seed suppliers along with tag verification. A stipulation will be added to bid
documentation to require the successful supplier(s) to verify sage subspecies and collection location and
• elevation
Table 2.05-8 *
Reclamation Seed Mixture-s List of Contingency Subs itutions for Tables 2.05-7 &9 -Colo o Mi ne- 200 8
Prior- We seeds/ Rec. PLS Avg. seeds
ity Species Synonym Common Name Origin Forth lb. lbs. / acre / sq. foot
2 Agropymn spicatum Ra doroegnerla spicata ssp spicata Bluebundl wheatgrass N Grass 140,000 0.5-2.0 1.3-5.4
1 Bromus dllatus Bromopsis dhatus Nodding Brome N Grass 80,000 0.3-1.0 0.6-1.8
4 Fesh" idahoensis Idaho Fescue N Grass 450,000 0.2 - 0.5 2.1-S.2
5 Orympsis hymenoldes Adrnatherum hymenoldes Indian Rkegrass (needs sandy . N Grass 141,000 0.50 1.6
3 /ba sand it Sandberg Bluegrass N Grass 92S,000 0.20 4.2
2 Hellanthella uniRora One(lower Sunflower N Forb 103,000 0.30 0.7
1 Heltomerls multl>lora Goldeneye N Forb 1,055,000 0.30 7.3
3 Sanguisorba minor Small Burnet N Forb 55,000 0.25 0.3
4 Viola amencana American Vetch N Forb 33,000 0.30 0.2
1 Artemisia cans Silver Sagebrush N Shrub 850,000 0.50 9.8
2 Chrysvtllamnus visddiAorus Douglas Pabbltbrush N Shrub 782,000 0.30 5.4
4 Rhus trilobata Skunkbrush Sumac N Shrub 20,300 0.50 0.2
3 Symphoricarpos rohmd7Yo11us Snowbe N Shrub 75 000 0.75 -1.0 1.3-1.71
* Should one or more of the species in Table 2.05-7 be unavailable or proven ineffective, then substitutes from
this list will be selected in the priority stated. They will be placed in the seed mix at the rate specified in the
priority stated. They will be placed in the seed mix at the rate specified for the unavailable/unsuitable species or
as appropriate. If more than one species of a given lifeform cannot be obtained or is otherwise unsuitable, then
the first and second priorities in the substitute list will be used. Colowyo can also choose to increase a seeding
rate of an approved species if a corresponding substitute is not available rather than choose a substitute from
Table 2.05-8. Colowyo will obtain prior verbal approval from the CDRMS.
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