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Spring 2013 Subsidence and Geologic Field Observations <br />South of Divide and Dry Fork Mining Areas (E -Seam) <br />4.9 Photographic Observation Point 3 <br />This is a new photographic observation point that is located on the MDW E4 -14 pad. This location <br />provides good views from the east to the south up the Dry Fork drainage and toward unmined <br />portions of E -seam Longwall Panels E4 through E6. Figure 12 provides a panoramic view from <br />this location. Note that the ridgeline in front of Mt. Gunnison represents a location approximately <br />above the barrier pillars between E -seam Longwall Panels E6 and E7. <br />Figure 12. Panoramic image from east to south during the spring 2013 field visit as obtained from <br />the MDW E4 -14 pad. This location will be used for future photographic comparison to assess <br />changes in the topography associated with the subsurface mining of E -seam Longwall Panels E4 <br />to E6. <br />4.10 Traverse G -G' <br />Traverse G -G' (previously known as Traverse L -L') is located along the Horse Gulch Road from <br />the fork in Dry Fork Road (east of Minnesota Reservoir) northward to the fork that either leads to <br />Apache Rocks (westward) or Sylvester Gulch/West Flatiron (eastward). <br />Previous observations have noted the reduced water level in the only stock pond (USFS Water <br />Resources Pond P22) located on the east side of this traverse. Photographs taken each spring show <br />considerable variability that is not related to mining activities. For example, the spring 2010 <br />photograph shows a pond size that was substantially surpassed in size during the spring 2011 field <br />visit. This pond was found to be near its maximum storage capacity during the spring 2011 field <br />visit (i.e., a year following mining beneath the area). Photographs obtained during the spring 2012 <br />and 2013 field visits once again show a reduced pond size suggesting a substantial correlation to <br />winter precipitation and not mining activities. Figure 13 shows this pond as observed during our <br />831 - 032.795 Wright Water Engineers, Inc. Page 22 <br />September 2013 <br />