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2020-08-20_GENERAL DOCUMENTS - C1980007
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2020-08-20_GENERAL DOCUMENTS - C1980007
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Last modified
1/26/2025 3:06:00 AM
Creation date
8/27/2020 1:35:50 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
General Documents
Doc Date
8/20/2020
Doc Name Note
For RN7
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
Mountain Coal Company, LLC
Permit Index Doc Type
Findings
Email Name
LDS
JDM
Media Type
D
Archive
No
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drains the eastern portion of the permit area. Minnesota Creek enters the North Fork of the <br /> Gunnison River near Paonia. The overall drainage exhibits a dendritic drainage pattern with <br /> steep channels. Horse Creek, South Prong of the East Fork, and Deep Creek are perennial <br /> streams. Lick Creek, Upper Dry Fork, upper Sylvester Gulch and Gribble Gulch are ephemeral <br /> streams. Minnesota Reservoir controls much of the flow in the lower Dry Fork of Minnesota <br /> Creek, and Beaver Reservoir controls the flow in the East Fork of Minnesota Creek. Lone Pine <br /> Gulch has no evidence of recent flow; therefore, no gaging station has been constructed. Even <br /> when all of the six gaged watersheds were found to be flowing, Lone Pine Gulch showed no flow <br /> or evidence of flow. Raven Creek flows through the extreme northeast corner of the permit area, <br /> but a stipulation of federal coal lease COC-67011 expressly forbids mining activities to expand <br /> the affected area into the riparian zone of the creek. <br /> There are three different types of springs within the permit area: alluvial, colluvial, and bedrock <br /> springs. A study of the groundwater system at the West Elk Mine by Mayo &Associates found <br /> 83 different springs within the existing permit area in 1999. From the identified springs, 65% of <br /> the cumulative discharge volume comes from superficial springs in alluvium and/or colluvium. <br /> Only 5% of the discharge comes from units of the Upper and Lower Coal member. The flow <br /> rates of these springs are highly seasonal with peak flows occurring during wet weather <br /> conditions. <br /> Reservoirs and stock ponds also occur within or near the permit area. Minnesota Reservoir, on <br /> the Dry Fork of Minnesota Creek, is centrally located within the coal permit area. Beaver <br /> Reservoir on the East Fork of Minnesota Creek is located near the southwestern boundary of the <br /> permit area. <br /> In addition to the storage reservoirs in the area of the West Elk Mine, a total of 61 stock water <br /> impoundments have been identified in or adjacent to the permit area as of 2006. Map 37 of the <br /> permit document shows the locations of the known stock water ponds. These ponds generally do <br /> not represent adjudicated water rights or perennial flows. Within the Gunnison National Forest, <br /> the ponds are managed for seasonal use by the U.S. Forest Service. <br /> Exhibit 32B of the permit application describes wetlands and riparian areas in the permit area. <br /> There are estimated to be approximately 77 acres of wetlands (as defined by the U.S. Army <br /> Corps of Engineers) in the permit area. Most of the wetlands are found in drainage channels, <br /> although there are small, isolated wetlands on the hillsides where springs and seeps locally <br /> emerge as a result of landslides/sumps. There are an estimated 104 acres of riparian areas in the <br /> permit area. <br /> Climatological Information - Rule 2.04.8 <br /> Information regarding climate characteristics can be found in Section 2.04.3 and 2.04.8 of the <br /> PAP. <br /> The mine site lies within the North Fork valley near Somerset, Colorado. At the mine site, the <br /> valley is narrow and steep sided and follows a general east-west orientation. Considerable <br /> topographic variation across the mine site, and west central Colorado in general, results in <br /> marked fluctuation in seasonal and average precipitation and temperature values for the entire <br /> area. <br /> 20 <br />
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