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2010-04-21_REVISION - C1982056
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2010-04-21_REVISION - C1982056
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Entry Properties
Last modified
8/24/2016 4:08:29 PM
Creation date
4/21/2010 1:25:44 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
REVISION
Doc Date
4/21/2010
Doc Name
Adequacy Responses
From
Twentymile Coal Company
To
DRMS
Type & Sequence
RN5
Email Name
JHB
Media Type
D
Archive
No
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mines in Northwest Colorado have resulted in planting techniques that help with establishment of <br />diverse permanent plant communities on reclaimed lands. The Division conducted a shrub <br />establishment study in conjunction with Colorado State University, Department of Range Science, <br />and three coal mine operators in Northwest Colorado. The study recognized the difficulties a <br />number of operators were having establishing shrub species using traditional reclamation <br />methods. The study initiated in 2000, eight years of observations have provided the Division, CSU <br />and coal mine operators valuable results regarding seeding techniques that have favorable shrub <br />establishment. <br />Response: The results and recommendations of the referenced study have been reviewed, along with <br />the revegetation plans presented in the current PAP. Where appropriate, the revegetation plans and <br />seed mixtures have been modified to reflect the updated studies and recommendations. Copies of the <br />revised PAP materials accompany these responses for insertion/replacement in the PAP. <br />10) The current rangeland seed mix (Table 55) and seeding method (P. 2.05-112) in the Foidel Creek <br />permit is expected to encounter similar difficulties experienced at other locations in Northwest <br />Colorado based upon the similarities in seed mix, environment, and seeding techniques. The <br />Division suggests re-evaluation of the seed mix and planting methods for the rangeland areas <br />incorporating some of the more recent study findings to assist in successful re-establishment of a <br />diverse rangeland community that will achieve Foidel Creek Mine's reclamation success <br />standards. <br />Response: Please refer to the previous response to Comment 9. <br />11) Review of Reclamation Success determination on page 2.05-115 finds TCC refers to three <br />reference areas, as shown on Map 18. Review of Map 18 and 18A only located two of the <br />reference areas; R2 (Pasture reference) and R3 (Sagebrush reference). Please direct the Division <br />to the location of the third reference area. Since R2 and R3 are located outside of the Foidel Creek <br />permit area boundary, TCC needs to demonstrate that it still maintains control over the <br />management of the reference areas. (Rule 4.15.7(3)(b)) <br />Response: Reference Area R4, the Sagebrush/Meadow Reference Area, is located between Foidel <br />Creek and Routt County Road 27, just to the west of the Foidel Creek School, as shown on Map 18. <br />Reference Area R2, while partially outside the current Permit boundary, is on lands owned by <br />Twentymile Coal Company (County Parcel 952071001). Similarly, Reference Area R3 is on lands <br />owned by Twentymile Coal Company (County Parcel 952171001). <br />12) The Foidel Creek permit needs to state what defines reclamation success for reclaimed sites. <br />Currently Pages 2.05-116 through 2.05-117 allude to meeting or exceeding cover, production and <br />density, without actually stating what defines success. Please clearly define what TCC proposes as <br />reclamation success for land reclaimed to pastureland and rangeland in accordance with (Rule <br />4.15.8) <br />Response: The referenced text section has been reviewed and revised, as appropriate, to clarify <br />revegetation success criteria for all affected vegetation types. In general, for disturbed areas <br />corresponding to the Sagebrush Grassland and Sagebrush-Meadow vegetation types, revegetation <br />success will be determined based on statistical equivalence for revegetation sampling (cover, <br />production, diversity, and woody plant density) between the reclaimed lands and the corresponding <br />Reference areas. For the Pastureland vegetation type, revegetation success will be determined in a <br />similar manner, based on statistical equivalence (cover and production only) between the reclaimed <br />lands and the corresponding Reference area. For reclaimed Hay Cropland, however, revegetation
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