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GENERAL54285
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Last modified
8/24/2016 8:39:35 PM
Creation date
11/23/2007 9:20:24 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1996084
IBM Index Class Name
General Documents
Doc Date
9/17/2001
Doc Name
Proposed Decision & Findings of Compliance for PR1
From
Mountaintop Removal Operation
Permit Index Doc Type
FINDINGS
Media Type
D
Archive
No
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<br />Quadrangle depicts the majority of the permit area. Elevations within the permit area range <br />from 6600 feet above mean sea level in the northeast part of the permit area to 7350 feet in <br />portions of the southern permit area. Steep slopes and rugged canyons generally describe the <br />topography of the permit area. With the exception of relatively, narrow, flat canyon floors of <br />Lorencito and Cow Canyons, most of the permit area is dissected by V-shaped side drainages to <br />the main canyons. These drainages are rimmed by steep, rocky outcrops, and watersheds are <br />divided by narrow, sharp ridges. Four main canyons are situated within the permit boundary. <br />Cow Canyon bounds the permit area on the west. Lorencito Canyon and Little Jeff Canyon are <br />located in the eastern portion of the permit area. Jeff Canyon runs west to east through the <br />center of the permit area and Puertecito Canyon bounds the permit area on the south. Surface <br />mining activities will generally be focused in Lorencito Canyon and on the north ridge of Jeff <br />Canyon. <br />Land use of the permit area is dominated by rangeland/wildlife habitat. Ninety-nine (99) <br />percent, or 31 17 acres, of the permit azea is, by Coal Regulation detmition, rangeland/wildlife <br />habitat. Cropland and irrigated cropland occupy 25 acres, mainly along the Purgatoire River <br />alluvial valley floor. <br />In addition to the two main drainages within the permit area, Lorencito and Cow creeks, <br />numerous other drainages exist within the permit and adjacent area. Chimney, Jeff, Puertecito, <br />Little Pine, Bonita, Alamosa, and Little Alamosa creeks all drain areas within the permit and <br />adjacent area. Only Lorencito creek demonstrated perennial flows during the baseline <br />collection period. Minimum flows at all other sites were recorded as zero at least once during <br />the baseline period. <br />Large flows occur down ephemeral drainages in response to intense precipitation events, <br />typically during the months of July, August, and September. A flow of 240 cubic feet per <br />second was recorded at the mouth of Little Pine Canyon. Snowmelt contributes only a small <br />percentage of total runoff, as infiltration and sublimation likely account for most of available <br />Snowmelt waters. <br />Soils in the permit area are thin, and in places, non-existent. The exception is the valley <br />bottoms, where soils are moderately well developed. Clay loam, with a low infiltration rate, <br />describes the majority of soils in the area. <br />Vegetation in the permit area is dominated by an oak/pinyon community. Most of the land in <br />the permit area, with the exception of the canyon bottoms and a few small grassland meadows, <br />would berated poor for suitability as rangeland. <br />Numerous wildlife species occur through the permit and adjacent area. The permit area is <br />important year-round habitat for elk, deer, bear and turkeys. A variety of small mammals and <br />reptiles are also found in the permit area. Fish are generally limited to perennial sections of <br />streams and game fish are entirely limited to the Purgatoire River. Raptors utilize the permit <br />and adjacent area and 39 species of other birds were noted during bird surveys. <br />
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