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2018-07-09_PERMIT FILE - C1981019A (24)
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2018-07-09_PERMIT FILE - C1981019A (24)
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Last modified
5/31/2019 7:59:39 AM
Creation date
9/21/2018 8:07:40 AM
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Template:
DRMS Permit Index
Permit No
C1981019A
IBM Index Class Name
Permit File
Doc Date
7/9/2018
Section_Exhibit Name
2.05 Operations and Reclamation Plans
Media Type
D
Archive
Yes
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RULE 2 PERMITS <br />(Table 2.05.8) owing to its well documented value to wildlife. <br />Data on reclaimed areas at Colowyo, has indicated that orchard grass is an important grass species <br />for controlling erosion and providing cover the first growing season, while decreasing subsequent <br />growing seasons. Orchard grass comprised 0.13 plants per square foot the first growing season, <br />while decreasing to less than 0.02 plants per square foot the second growing season. This indicates <br />the effectiveness of orchard grass to provide erosion control early on revegetated areas, while not <br />sustaining this vigor in later years due to increased competition and crowding by other species as <br />well as targeted selection by elk (i.e. it has been repeatedly observed in Colowyo reclamation, that <br />orchard grass plants have been selectively consumed by resident elk, and therefore, can be <br />considered highly desirable forage). <br />Also, data from Exhibit 10 indicates that Kentucky bluegrass is the most important grass species <br />contributing to the pre -mine vegetative diversity. <br />Given the aforementioned, it must be accepted that there is a place for certain introduced species <br />in Colowyo reclamation. In 2008 and thereafter, occasional use of introduced species may occur, <br />but will be limited (as indicated in the seed mixes) to specific circumstances. The only <br />circumstances where limited use of introduced species will not be followed are instances where a <br />unit of land is designed to target a post -mine land use of "pastureland" or a unique area is highly <br />susceptible to erosion. Use of the more aggressive taxa: smooth brome, intermediate wheatgrass, <br />and pubescent wheatgrass will be avoided, with the possible exception of "pastureland" <br />development should such a land use be targeted at some future point of time. Prior to such land <br />use designation or use of aggressive taxa to combat areas that are highly susceptible to erosion, an <br />MR or TR (as appropriate) will be obtained from CDRMS to address such circumstances. <br />For the areas to be disturbed by mining, a timetable for reclamation has been established in order <br />to allow for proper scheduling of reclamation activities. The acres to be reclaimed are shown in <br />Section 2.03 on Table 1, Affected Areas for Mining and Reclamation. The revegetation will be <br />conducted during the first normal planting season following the application of topsoil and <br />preparation of the site for seeding. The most favorable times for seeding in this area are in the <br />early spring and late fall. Spring seeding is usually severely limited by high soil moisture <br />conditions, which prohibit the use of seeding and seedbed preparation equipment at a time when <br />conditions are best for germination and seedling establishment. For this reason seeding will be <br />done during late fall months immediately prior to the average occurrence of the first significant <br />snowfall event when the conditions for seeding are optimal. A modest amount of broadcast <br />seeding may occur at other times including early spring, as detailed under Planting and Seeding <br />Methods in this Section, but typically only for small "mop -up" circumstances. <br />With regard to road embankments, several methods have been used to stabilize the various cut and <br />fill slopes. Where possible, road cut slopes were reduced from 1:1 to 3h:ly, retopsoiled, seeded, <br />and mulched. Several other cut and fill slopes were left in a roughened condition during <br />construction, and then topsoiled, mulched and seeded after construction. The seed mixture used <br />for road cuts is the same as the mixture used for exploration sites as described in Section 2.02. <br />Upon the completion of all coal mining and reclamation operations by Colowyo, the office, shop, <br />Rule 2 Permits 2.05-33 Revision Date: 5/25/18 <br />Revision No.: RN -07 <br />
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