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REV04352
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REV04352
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Last modified
8/25/2016 1:02:27 AM
Creation date
11/21/2007 9:17:15 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Revision
Doc Date
12/24/2001
Doc Name
COMMENTS REGARDING COLOWYO COAL CO LP PN C-81-019 TR52
To
DMG
Type & Sequence
TR52
Media Type
D
Archive
No
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One of the purposes of the cooperative CSU/CDMG/Colowyo woody plant <br />establishment study I established in 2000 was to determine the potential to use <br />varying topsoil depths in the establishment of woody plants in a controlled <br />manner. The study objectives did not consider using no topsoil throughout <br />reclaimed areas in "rangeland" areas. I suggest it is premature to modify topsoil <br />replacement depths until the results of the 3-year study are complete. <br />• I suggest it would be more appropriate to place annual reclamation information in <br />the Annual Reclamation Reports rather than the Annual Hydrology Reports. <br />• Apparently there is a proposed new Shrub Establishment Plants/ Seed Mixture - <br />Table 3. Unfortunately, the public review copy located in the Moffat County <br />Courthouse did not include a copy of such a Table 3. Is there such a proposal to <br />provide such a modified mix? <br />Table 1 proposes to include such species as Canby Bluegrass and Northern <br />Sweetvetch in what appears to be a "base" mix. These two species were <br />formerly included in historic Colowyo seed mixes. Because of their failure to <br />establish these species were subsequently removed. Other local mines (ie <br />Trapper, et al) also removed such species from their mixes. I question the logic <br />of putting such species back into a base mix when they were removed because <br />of their failure to perform. <br />The 2000 Phase II bond release revegetation data provides the documentation <br />that titer milkvetch was the key perennial fort species enabling Colowyo to meet <br />the 3% relative cover threshold to meet the Permit Diversity standard. Cicer <br />milkvetch has been shown to be a key fort species at other northwest Colorado <br />mines as well because of it's ability to withstand continuing grazing pressure by <br />elk, it's drought tolerance and it's ability to compete with other herbaceous <br />species. (There is some limited anecdotal evidence that it has dominated some <br />limited sites, but not at the mines in northwest Colorado). In addition, CDOW <br />officials (personal conversations with Rick Hoffman and Tony Apa) are adamant <br />that cicer milkvetch is a key species in coal mined land reclamation for important <br />upland bird species such as sagegrouse and sharp-tail grouse. These species <br />rely on cicer milkvetch for important nesting and brood rearing activities because <br />they provide cover, insects and succulent forage. Removal of cicer milkvetch <br />from the core seedmix will result in the inability of the reclamation to meet future <br />bond release diversity standards and will adversely effect the potential of the <br />reclaimed lands for wildlife habitat. I question the logic behind removing perhaps <br />the most important forb species at Colowyo and other local mines from <br />Colowyo's core seed mix. <br />The Table 2 Substitute species list contains a number of species of questionable <br />merit. I am aware of little evidence to support the substitution of the core mix <br />species which have proven to perform quite well in northwest Colorado with poor <br />performing species such as Junegrass, Small Burnet, Sandberg Bluegrass, <br />Idaho Fescue, Gamble's Oak, etc. To substitute proven, reliable species with <br />less reliable species would appear to be nothing more than an academic roll of <br />the dice and jeopardizes eventual reclamation success. Perhaps these species <br />can be seedmix additions to satisfy the native plant purists among us but it would <br />2 <br />
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