2012-07-02_REPORT - C1980007 (3)

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West Elk Mine 2011 Annual Hydrology Report 27 3.2.1 Springs above the F -Seam in the North Fork Drainage Basin 3.2.1.1 Spring 24 -3 Spring 24 -3 is located in the West Flatiron drainage that is the first tributary entering Raven Gulch from the west, which is tributary to the North Fork of the Gunnison and east of the West Flatiron B -seam longwall panels (Map 2). This spring issues from a sandstone bed above the F -Seam, flows seasonally, and is typically dry or nearly dry in the late summer and fall months. Monitoring at this spring began in 1998. 3.2.1.2 Springs E -13 -1, E -13 -2, E -13 -3, E -13 -4 Springs E -13 -1, E -13 -2, E -13 -3, and E -13 -4 are located in the lower West Flatiron drainage that is the first tributary entering Raven Gulch from the west, which is tributary to the North Fork of the Gunnison and east of the West Flatiron B -seam longwall panels (Map 2). These springs issue from sandstone beds above the F -seam, flow seasonally, and are typically dry or nearly dry in the late summer and fall months. These springs have been monitored since 2001. 3.2.1.3 Spring 26 -1 Spring 26 -1 is located in a drainage on the west side of Deep Creek between the Upper and Lower Deep Creek monitoring stations (Map 2). Deep Creek is tributary to Raven Gulch and the North Fork. This spring is located above the east side of longwall panel 15 (Box Canyon B -seam longwall panel area) and issues from a sandstone bed above the F -seam. This spring has perennial flow, but shows strong seasonal variations with high flows in the spring months. Monitoring at this spring began in 1996. 3.2.1.4 Seep E14 -1 Seep E14 -1 is located in upper Box Canyon which is tributary to the North Fork. It is located above the Box Canyon B -seam longwall panel area (Map 2). This seep issues from a sandstone bed above the E -seam and has not flowed through the period of record. It is damp only during very wet spring months, but is typically dry. Monitoring at this seep began in 1998. This seep was permanently covered by drill -pad construction in WY 2006 and is no longer being monitored. June 2012 HydroGeo, Inc.