2010-05-14_REVISION - C1996083 (2)

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52. The information on revised page 2.05-120 and on Map 9 shows that there is no upstream monitoring site for Steven's Gulch. An upstream monitoring site is needed to compare with the monitoring information gathered at downstream monitoring site SW-5. Please propose a Steven's Gulch upstream monitoring site or explain why such a site is impractical. 53. A discussion of the Bruce Park Dam begins on page 2.05-136. The permit text continues to refer to the Bruce Park Dam, while the various permit maps use the name "Terror Creek Reservoir". In the interest of clarity, please consider adding, "and Bruce Park Dam" to the feature on the various maps and/or modify the permit text to explain that the reservoir formed by the Dam is the Terror Creek Reservoir. 54. Please explain why the creek in Steven's Gulch is not included along with Hubbard Creek and Terror Creek in the discussions on revised pages 2.05-136 and 2.05-142. 55. Discussion of the Bruce Park landslide begins at the top of page 2.05=137. While the feature is analyzed in detail in the referenced Yeh study, the location of the landslide is not apparent on Map 06 - Geological Hazards. Please modify Map 06 to indicate the location of the Bruce Park landslide feature. 56. The third paragraph on page 2.05-137 describes the Hubbard Creek road. Please update the text to incorporate the new Hubbard Creek Fansite. 57. On revised page 2.05-137, BRL states that the Stevens Gulch road will be subsided and that the road is protected where severe damage would occur by limited extraction. The Division does not agree that Stevens Gulch road is protected by limited extraction areas from activities as proposed under PR-12. Permit text on page 2.05-141 accurately describes the subsidence consequences and mitigation for the Stevens Gulch road. Please correct the permit text on page 2.05-137. 58. The 3rd paragraph on page 2.05-140 refers to the potential impact to the Bruce Park landslide of mine-induced seismic activity. Please consider modifying this paragraph to include a reference to the Yeh 2006 study. 59. Please add permit text discussion at the bottom of page 2.05-142 regarding the subsidence consequences and mitigation to any loss of surface water flow in Stevens Gulch. 60. The second paragraph on page 2.05-143 seems to be internally contradictory: "The sandstone ledge that forms Dove Cave could collapse. However the sandstone ledge will not be damaged since it is not within the area to be affected by mining." (Emphasis added) Please verify that the text reads as it is intended to read, or change as appropriate. 61. The 3rd paragraph on page 2.05-151 refers to a limited extraction zone that has been established where the 1 West Mains cross under Terror Creek and the WAPA transmission line. The following paragraph reiterates the WAPA zone. Maps 14-B and 27 do not appear to have been modified to illustrate the limited extraction zones described. Please revise Maps 14-B and 27 to depict the limited extraction zones for the 1 West Mains. 8