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PR-12 Exhibit 71 28 <br />4.4.3.4 Spring G-31 <br />Spring G-31 is located in Gribble Gulch above the east end of the Jumbo Mountain mine panels (Map 1). This <br />spring issues from alluvium and flows into a small pond. It is seasonal and flow usually occurs during wet spring <br />conditions. The pond is often dry in summer and auturrm. It is recommended that this monitoring station be <br />deleted from the hydrologic monitoring plan, because mining activities have moved well east of the Jumbo <br />Mountain area and there have been no measurable mining-induced impacts at this site. Monitoring at this spring <br />began in 2000. <br />4.4.3.5 Spring G-30 <br />Spring G-30 is located in Gribble Gulch above the east end of the Jumbo Mountain mine panels (Map 1). It <br />issues from alluvium, but water has not been observed during the past four years. It is recommended that this <br />monitoring station be deleted from the hydrologic monitoring plan, because mining activities have moved well <br />east of the Jumbo Mountain area and there have been no measurable mining-induced impacts at this site. <br />Monitoring at this spring began in 2000. <br />4.4.3.6 Spring G-25 <br />Spring G-25 is located in the Gribble Gulch drainage and is north of the Jumbo Mountain mine panels (Map 1). It <br />issues from alluvium and flows into a holding pond. This spring has perennial flow which diminishes in late <br />summer. It is recommended that this monitoring station be deleted from the hydrologic monitoring plan, because <br />mining activities have moved well east of the Jumbo Mountain area and there have been no measurable mining- <br />induced impacts at this site. Monitoring at this spring began in 2000. <br />4.4.3.7 Spring G-35 <br />Spring G-35 is located on the north flank of Jumbo Mountain in an unnamed drainage west of Gribble Gulch <br />which is tributary to the North Fork of the Gunnison River (Map 1). This spring is on the north edge of the <br />Jumbo Mountain mine panels. The spring issues from alluvium and flows into a holding pond where water is <br />present during wet climatological cycles. It is recommended that this monitoring station be deleted from the <br />hydrologic monitoring plan, because mining activities have moved well east of the Jumbo Mountain area and <br />there have been no measurable mininc induced impacts at this site. Monitoring at this spring began in 2000. <br />4.4.3.8 SPring G-49 <br />Spring G-49 is located on the north flank of Jumbo Mountain, west of Gribble Gulch, in an unnamed drainage <br />tributary to the North Fork of the Gunnison River (Map 1). The spring is north of die Jumbo N-1o)untain mine <br />panels. Flow is perennial, but diminishes in the autuiiin. This spring issues from alluvium and hydrological <br />monitoring measurements are taken at the end of an outflow pipe from an enclosed spring house. It is <br />recommended that this monitoring station be deleted from the hydrologic monitoring plan, because mining <br />September 2007 Iij-droGeo. Ine. <br />