2015-07-01_REPORT - C1980007 - Laserfiche WebLink

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West Elk Mine 2014 Annual Hydrology Report 24 3.2.1 Springs above the F -Seam in the North Fork of the Gunnison River 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. This spring monitors the West Flatiron B -seam longwall panels (West Flatiron mine panels area) and the Box Canyon B -seam longwall panels (Box Canyon mine panels area) (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. These springs monitor the Box Canyon and West Flatiron mine panels areas (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 2002. 3.2.1.3 Spring 26-1 Spring 26-1 is located in an unnamed 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 southeast mine panels 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. Hydrologic 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. This seep was permanently covered by drill -pad construction in WY 2006 and has not been monitored since. 3.2.1.5 Spring 27-1 Spring 27-1 is located in upper Sylvester Gulch, which is tributary to the North Fork, (Map 2) and feeds an area known as "twin ponds". This spring issues from alluvial sediments and is located above the southeast mine panels area. Hydrologic monitoring measurements from this station are taken at the end of a corrugated plastic drain pipe. Hydrologic monitoring at this spring began in 1996. 3.2.1.6 Spring G-7 Spring G-7 is located in a western tributary of Sylvester Gulch and is situated above the northeast mine panels area and north of the southwest mine panels area (Map 2). This spring issues from joints in a sandstone ledge and has perennial flow, but shows strong seasonal variations with high flows in the spring months. Hydrologic monitoring at this spring began in 1977. June 2015 HydroGeo, Inc.