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Exhibit 71 Hydrologic Characterization South of the Divide Area and Monitoring Plan 26 <br />• 4.4.2.6 Spring G20 <br />Spring G-20 is located in middle Sylvester Gulch on the east side of the drainage. It is located north of <br />the Box Canyon panels and east of the mine facilities (Map 1). It issues from alluvium or landslide <br />material and disperses water through a grassy azea. Monitoring at this spring began in 1979. <br />4.4.3 Springs above the B Seam in the Jumbo Mountain Area in the North <br />Fork Drainage Basin <br />4.4.3.1 Spring' CR-I2 <br />Spring CR-12 is located in Lone Pine Gulch north of the NW mine panels (Map 1). It issues from <br />alluvium on the south side of the gulch. This is a perennial spring, but the volume of flow diminishes in <br />summer and autumn. It is recommended that this monitoring station be deleted from the hydrologic <br />monitoring plan, because mining activities have moved well east of the Jumbo Mountain azea and there <br />have been no measurable mining-induced impacts at this site. <br />4.4.3.2 Spring G-?6a <br />Spring G-26a is located in Lone Pine Gulch north of the NW mine panels (Map 1). This spring issues <br />from alluvium and flows into a small pond. This spring is seasonal and flow only occurs during peak <br />flow conditions. It is recommended that this monitoring station be deleted from the hydrologic <br />• monitoring plan, because mining activities have moved well east of the Jumbo Mountain azea and there <br />have been no measurable mining-induced impacts at this site. <br />4.4.3.3 Spring G-28a <br />Spring G-28a is located in a north tributary to Gribble Gulch (Map 1). It is above the western-most <br />panels in the NW mine panels. This spring issues from alluvium and is seasonal. Flow usually occurs <br />during peak flow and accumulates in a stock pond. It is recommended that this monitoring station be <br />deleted from the hydrologic monitoring plan, because mining activities have moved well east of the <br />Jumbo Mountain azea and there have been no measurable mining-induced impacts at this site. <br />4.4.3.4 SDrlnP G-31 <br />Spring G-31 is located in Gribble Gulch above the east end of the Jumbo Mountain mine panels (Map 1). <br />This spring issues from alluvium and flows into a small pond. It is seasonal and flow usually occurs <br />during wet spring conditions. The pond is often dry in summer and autumn. It is recommended that this <br />monitoring station be deleted from the hydrologic monitoring plan, because mining activities have moved <br />well east of the Jumbo Mountain area and there have been no measurable mining-induced impacts at this <br />site. <br />u <br />April 2006 HydroGeo, Inc <br />