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HYDROLOGIC CHARACTERIZATION AND MONITORING PLAN 25 <br />4.2.2.3 Spring E10-2 <br />Spring E10-2 is located on a hillside east of an unnamed drainage tributary to the North Fork <br />between Sylvester Gulch and Box Canyon (Plate 1). This spring is situated in landslide material <br />below a fractured sandstone cliff north of the Box Canyon mine panels area. Low flows have <br />occasionally been measured at this spring in response to spring runoff, but it has been only a seep <br />or dry for most of the period of record. Hydrologic monitoring at this spring began in 1996. <br />4.2.2.4 Spring 15-1 <br />Spring 15-1 is located on the west side of an unnamed drainage tributary to the North Fork <br />between Sylvester Gulch and Box Canyon (Plate 1). This spring is situated north of the Box <br />Canyon mine panels area. The spring issues from alluvium and water is present as a slow seep <br />only during peak flow months. Hydrologic monitoring at this spring began in 1996. <br />4.2.2.5 Spring G -la <br />Spring G-1 a is located in Sylvester Gulch on the west side of the drainage, north of the northeast <br />mine panels area (Plate 1). It issues from alluvium and is seasonal with moisture present only <br />during periods of snow melt or peak flow. Hydrologic monitoring at this spring began in 1983. <br />4.2.2.6 Spring G-20 <br />Spring G-20 is located in middle Sylvester Gulch on the east side of the drainage. It is located <br />east of the mine facilities and northwest of the Box Canyon mine panels area (Plate 1). It issues <br />from alluvium or landslide material and disperses water through a grassy area. The spring has <br />been dry since WY 2009. Hydrologic monitoring at this spring began in 1979. <br />4.2.3 Springs above the E -Seam in the Minnesota Creek and <br />Dry Fork Drainage Basin <br />4.2.3.1 Spring J-4 <br />Spring J-4 is located in East Gulch, East of Horse Gulch and is tributary to the Dry Fork and <br />Minnesota Creek (Plate 1). This spring is situated above the SOD mine panels area. This spring <br />issues from alluvium, is seasonal, and flow is significantly reduced or dry in late summer or <br />autumn. Hydrologic monitoring at this spring began in 1981. <br />4.2.3.2 Deer Creek Spring <br />Deer Creek Spring is a decreed domestic spring located in Deer Creek which is tributary to Dry <br />Fork (Plate 1). It is located above the SOD mine panels area. The source of this spring is not <br />known. This spring typically has perennial flow, but shows strong seasonal variations with very <br />low flows in the late summer and autumn months. This spring has been monitored since 2006. <br />4.2.3.3 Spring WCC -24 <br />Spring WCC -24 is a perennial spring located in a small unnamed tributary on the south side of <br />the Dry Fork (Plate 1). It is located west of the SOD mine panels area. The source of this spring <br />is not known. This spring typically has perennial flow, but shows strong seasonal variations with <br />the highest flows occurring in the late summer and autumn months. This spring has been <br />monitored since 2006. <br />Revised 09/07- PR12; 08/16- TR139 HydroGeo, Inc <br />