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West Elk Mine 2007 Annual Hydrology Report 20 <br /> <br />3.2.1.5 Spring 27-1 <br />Spring 27-1 is located in upper Sylvester Gulch, is tributary to the North Fork of the Gunnison <br />River, (Map 2) and feeds an area known as "twin ponds". This spring issues from alluvial <br />sediments and is located above the south side of mine Panel 15 (Box Canyon mine panel area). <br />Hydrologic monitoring measurements from this station are taken at the end of a plastic drain pipe. <br />Monitoring at this spring began in 1996. <br />3.2.1.6 Spring <br />Spring G-7 is located in a western tributary of Sylvester Gulch and is situated south of the NE mine <br />panel area and north of the SE panel area (Map 2). This spring issues from joints in a sandstone <br />ledge and has perennial flow, but shows strong seasonal variations with high flows in the spring <br />months. Monitoring at this spring began in 1977. <br />3.2.1.7 Springy <br />Spring G-16 is located in Sylvester Gulch east of the NE mine panel area (Map 2). This spring <br />is issues from a sandstone bed above the F-Seam and flows seasonally. It is typically dry in the late <br />summer and fall. Monitoring at this spring began in 1979. <br />3.2.1.8 Spring G-24 (Decreed Spring #8) <br />Spring G-24 is located in Sylvester Gulch east of the NE mine panel area (Map 2). This spring <br />issues from alluvium and is measured at the outflow of a plastic drainage pipe. It flows seasonally <br />and is typically dry in the late summer and fall. Monitoring at this spring began in 1979. <br />3.2.1.9 Spring G-14 (Decreed Spring #7) <br />Spring G-14 is located in Sylvester Gulch east of the NE mine panel area (Map 2). This spring <br />issues from fractures in the base of a sandstone bed. It flows seasonally and is typically dry in the <br />late summer and fall. Monitoring at this spring began in 1977. <br />3.2.1.10 Spring G-22 (Decreed Spring #3) <br />Spring G-22 is located in the Sylvester Gulch drainage on a hillside on the west side of the <br />drainage, just south of a mine ventilation shaft and east of the NE mine panel area (Map 2). It <br />issues from alluvium over a wide area and feeds a wetland on the west side of Sylvester Gulch. <br />• Flow diminishes in late summer and autumn. Monitoring at this spring began in 1977. <br />June 2008 HydroGeo, Inc.