2009-08-13_PERMIT FILE - C1981019A ‎(3)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 8/13/2009
• Section_Exhibit Name: 2.05 Operations and Reclamation Plans
• Media Type: D
• Archive: Yes

sagebrush steppe mix, it is possible that on occasion, grass emergence may not be satisfactory
for erosion control or life form diversity. In such circumstances a supplemental "inter-
seeding" with the grassland mix may be necessary to "bolster" the grass and forb component
of the community. This activity is allowed under Rule 4.15,7 (5)(g). Such an inter-seeding
would only occur if adequate sagebrush or other shrub seedlings have emerged from the
initial seeding, otherwise a "reseeding" or "augmented seeding" would be mandated.
Furthermore, such an inter-seeding must occur within the first fixer years from the date of the
initial seeding to avoid circumstances that would "reset the bond release clock". If "inter-
seeding" is necessary on any units of land. CDRMS will be apprised in the Annual
Reclamation Report.
The high rate of seeds per square foot in the sagebrush steppe mix is simply a result of the
small seed size for several taxi in the mixture (e.g., sagebrush at 2,500,000 seeds /pound).
Tile individual species have been selected for their habitat forming characteristics for sage
grouse during their brooding period. None of the individual seeding rates are excessive given
the current state of knowledge, nor is the seeding rate per acre excessive for combination drill
/ broadcast seeding. However, this mix has not been designed to ensure quick erosion control
for immediate stabilization of the topsoil and therefore, should not he used on slopes that
exceed 10%. Furthermore, it may need to be planted intennittently (banding) with the
grassland mix on long, low-gradient slopes. For additional infonnation regarding this
planting technique, see the "Planting and Seeding Methods" section below.
Table 2.05-7
Reclamation Seed Mixture -Grassland Erosion Control / Grazin land Targeted Areas - Co lowyo Mine - 2 008
Life Seeds/ Rec. PLS Avg. seeds
1
App. Species Synonym j Common Name Origin Form lb. lbs. / acre / sq. foot
7
Agmpymo dary5tm%1jm EtyMus larreo(aRrs csp. fanatojatus Thicksp,ke Wheatgrass N Grass 154,000 1.25 4
Agropyron sm/thli Pascopynrm smlthli Western W-heatgrass N Grass 111 1.50 3.8
Agropymn spicatum inerme f Sdvdovne'gnerla sp+cara ssp. merme Beanlless Bluebunch Wheatgrass N Grass :17,000 2.00 5.4
Agmpymn frachyratdum Elymus trachyraulus csp. trac'hyraulus Slender Wheatgrass N Grass 159,000 035 2.7
Brmius marglnatus Bromapsls mairgmatus Mountain Brome N Grass 90,000 1.00 2.1
Ella ws clnereus Leymus dnereus Great Basin Wlidrye N Grass 130,000 0.50 1.5
Slips v+r/dula New laxoo to ccc• Nassella vlridula Green Needl rass N Grass 181,0001 0.75 3.1
As"galus cker Cicer M;lkvetch I Forb 145,000 0.30 1.0
Urum leiyisll Lewis Flax N Forb 293,000 0.25 1.7
AMpler canescens Fourwing Saltbush N Staub 52,000 1.60 1.9
Sympho,karpos rotundlJoBk/s Mountain Snowberry N Shrub 75,000 0.75 1.3
S ti6total - 10,65 28 .87
Fem-ca sar mnrana Rocky Mountain Fescue N Grass 680,000 0.50 7.8
v Achillea m ff fc,1rum Western Yarrow N FOrb 2,770,000
I 0.10 6.4
o /Mst
emon strictus
Rcc , Mountain Pen5temon
N
Porb
592,000
0.2'_•
7 4
m Artemis- Mdenti; vaseyana Mountain Big Sarebru5h N Shrub 2,500,000
Subtotal = 0.50
L35 46 19J
26
Greae?LS/SeedslR'Subtntal-a.25/70.t lorb ?LSi SeedsJR'Subtobl .0.9/17.44 Shmb?LS/ Seeds,ft' Subtotals 2.1513L9 TOCaI 12.00 .
7$.13
Note: Where desirable to draw Elk away from particular locations, Elymus cinereus may be substitued with Orchard Grass (sought by Elk) at the quantity Ind icated
heiow (I.e. 0.5 ib of Eld replaced by 0,5 ib of 0agl). Furthermore, this substltutlon should not occur on more than approximately 25% of the acreage targetin g the
grazingland land use, and It would be most beneficial to be placed In or near draw bottoms. list some future point It i s desirab le to subst itute fora species o ther
than Elcl, or on more than 25% of the grazingland acreage, permission will first be gained from CORMS.
i. Orc'?aro Gras
TO 1
ic4ns rnerata
Grass
FV,4,000
1).110
.51
Seed Mix Comments
1) The correct sagebrush seed (Ai-ten ilia vasevana - 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.
2.05-52 Revision Date: 3/14/08
Revision No.: "iR-72