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C-1996-083 - PR-12 <br />Adequacy Review - MLT <br />04 May 2010 <br />Page 2 of 3 <br />Abbreviation Shown <br />on Ma 07 Stratigraphic Unit from :Permit Text <br />Tw Wasatch Formation <br />Kmvo Ohio Creek Conglomerate <br />Kmvb Mesaverde Formation - Barren Member <br />Kmvc Mesaverde Formation - Coal Bearing Member <br />Kmvr Mesaverde Formation - Rollins Sandstone Member <br />If the Division's correlations are correct, please include the abbreviations within the Stratigraphy <br />text so that the map may be more easily interpreted. <br />Subsection (3)(a)(iii)(A)&(B) on page 2.04-20 should be modified to include Map 08A for drill <br />hole logs, etc. <br />Section 2.05.6(6) Subsidence Survey, Monitoring and Control Plan <br />A discussion of the Bruce Park Dam begins on page 2.05-136. The permit text continues to refer <br />to the Bruce Park Dam, while the various permit maps use the name "Terror Creek Reservoir". <br />In the interest of clarity, please consider adding, "and Bruce Park Dam" to the feature on the <br />various maps and/or modify the permit text to explain that the reservoir formed by the Dam is <br />the Terror Creek Reservoir. <br />Discussion of the Bruce Park landslide begins at the top of page 2.05-137. While the feature is <br />analyzed in detail in the referenced Yeh study, the location of the landslide is not apparent on <br />Map 06 - Geological Hazards. Please modify Map 06 to indicate the location of the Bruce Park <br />landslide feature. <br />The third paragraph on page 2.05-137 describes the Hubbard Creek road. Please update the text <br />to incorporate the new Hubbard Creek Fansite. <br />The 3rd paragraph on page 2.05-140 refers to the potential impact to the Bruce Park landslide of <br />mine-induced seismic activity. Please consider modifying this paragraph to include a reference <br />to the Yeh 2006 study. <br />The second paragraph on page 2.05-143 seems to be internally contradictory: "The sandstone <br />ledge that forms Dove Cave could collapse. However the sandstone ledge will not be damaged <br />since it is not within the area to be affected by mining." (Emphasis added) Please verify that the <br />text reads as it is intended to read, or change as appropriate. <br />According to subsection (c)(i) on page 2.05-144, the subsidence monitoring program for the <br />Bruce Park dam and Bruce Park landslide will be suspended. Text regarding the monitoring <br />program has also been struck through on page 2.05-149. However, page 2.05-158 appears to