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GENERAL39459
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Last modified
8/24/2016 7:58:54 PM
Creation date
11/23/2007 10:10:58 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
General Documents
Doc Date
11/5/2007
Doc Name
Mining Plan Decision Document Federal Lease C-1362 (TR109)
From
Mountain Coal Company, LLC
To
DRMS
Permit Index Doc Type
Other Permits
Media Type
D
Archive
No
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2 <br />The Service also concurs with your conclusion that the proposed action "may affect", but is "not <br />likely to adversely affect" the Canada lynx. Tables 3 and 4 in the biological assessment provide • <br />habitat statistics for the Mount Gunnison Lynx Analysis Unit. However, we do not believe that <br />this information represents the true environmental baseline for the proposed action. In an <br />attempt to determine the appropriate environmental baseline for the proposed action, we <br />reviewed two previous actions, the Sylvester Gulch and Box Canyon projects (BO # ES/GJ-6- <br />CO-04-F-008) ,and the Dry Fork coal lease project (BO # ES/GJ-6-CO-06-F-003), which <br />occurred at the West Elk Mine. We detected some discrepancies related to the habitat statistics <br />for the Mount Gunnison LAU. The detected discrepancies in the previous project documents for <br />the West Elk Mine are in the total size of the Mount Gunnison LAU, the amount of lynx habitat <br />within the LAU and the amount of habitat in an unsuitable condition within the LAU. The <br />environmental baseline for the proposed action did not include lynx habitat disturbances that <br />resulted from previous actions. We have concluded, through our review of the previous actions, <br />that approximately 71 acres of habita[ disturbance have been addressed Through previous section <br />7 consultations. Therefore the environmental baseline statistics for the Mount Gunnison LAU <br />should have reflected the previous habitat disturbances. The current proposed action anticipates <br />approximately 54 acres of disturbance. When added to past actions, the total habitat converted to <br />an unsuitable condition within the Mount Gunnison LAU is 125 acres. The BA states that the <br />quantity of lynx habitat within the Mount Gunnison LAU totals approximately 23,586 acres. <br />Therefore, the conversion of 125 acres to an unsuitable condition equates to 0.5% of the lynx <br />habitat in this condition. The amount of lynx habitat in an unsuitable condition is within Lynx <br />Conservation Assessment and Strategy (Ruediger et al. 2000) standards for providing sufficient <br />foraging habitat for lynx. The effect of this conversion is considered insignificant and will not <br />preclude the Mount Gunnison LAU from supporting a resident lynx. • <br />The biological assessment stated that additional snow compaction, within lynx habitat, would <br />result from the proposed action. However the BA concluded that minimal winter forage/denning <br />habitat would be disturbed. The BA does not discuss increased snow compaction within "other" <br />lynx habitat and therefore did not state the anticipated overall length of compacted routes <br />resulting from the project. There is little question that the proposed action will result in <br />increased snow compaction within the Mount Gunnison LAU. However, within the project area, <br />the habitat appears to consist primarily of aspen forest with some small, isolated pockets of <br />winter forage/denning habitat that are disjunct from larger contiguous blocks of habitat within <br />the LAU. Also, the project area has several narrow stringers of winter forage/denning habitat <br />that may be bisected by proposed roads or drill pads. These narrow stringers may extend to <br />lower elevations due to the northerly aspect, which retain moisture and results in a more mesic <br />vegetative condition. Aspen forests do not provide sufficient cover or forage for snowshoe hares <br />(Lepus americanus) during winter months. Therefore, there is little likelihood that a resident <br />lynx will be present within this vegetation type during the winter. The project area appears to be <br />a transition area between low elevation dry vegetation types and higher elevation wetter <br />vegetation more suitable for lynx and lynx prey. We believe that lynx may still use this area <br />periodically (primarily during the snow free period), but The project area is unlikely to support <br />snowshoe hare numbers that will support a resident lynx for any length of time. Additionally, <br />the BA states that this area does not receive consistent deep snow and that there is little if any <br />spatial segregation between lynx and other predators competing for prey. Therefore, based on <br />• <br />
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