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0 2.05.6(6) <br />(f)(v) A narrative of the detailed description of measures to be taken to determine <br />the degree of material damage or diminution of value or foreseeable use of <br />the surface follows: <br />(f)(v)(A) The features which might be materially damaged by subsidence include the <br />water resources, roads and trails, power lines, transmission towers, and <br />landslides within the permit and adjacent area. The Operator's facilities may <br />be damaged by rockfall activity. The creeks, springs and ponds within the <br />area projected to be mined in current mine plan (ref. Map 14) have been <br />extensively monitored. The water level and water quality of the groundwater <br />within the formation has also been monitored. The results of the monitoring <br />are presented in Volume III, Exhibit 3. Map 6, Geologic Hazards, shows the <br />present location of existing landslides, debris flow, potentially unstable slopes <br />and rock fall hazards. <br />No pre- subsidence survey is proposed for the power line support towers <br />located along Terror Creek because they are located in a limited extraction <br />zone. A pre- subsidence survey has been done for Bruce Park dams, see <br />Volume X. The pre- subsidence survey consists of a Geotechnical Data <br />Report for the Bruce Park Dam and an Addendum to that report both <br />presented in Volume X. The geotechnical reports present geologic mapping <br />and subsurface geotechnical data for the main dam and saddle dam. An <br />additional pre- subsidence inspection of the Bruce Park dams, Bruce Park <br />Landslide and the surrounding area was preformed by YEH and Associates, <br />Inc. during 2007. Their report is presented in Volume IIIA, Tab 22. <br />(f)(v)(B) Monitorina <br />See tables beginning on page 2.05 -160. <br />The hydrologic monitoring program will continue. At least quarterly <br />monitoring will be performed. Surface streams, ponds, springs and <br />groundwater will continue to be monitored. The results of the monitoring will <br />be observed for abrupt changes in water levels, flows or quality which might <br />indicate-mining-impact. <br />PR -12 2.05-154- 02/10 <br />APPA06b <br />I ! /a/ /4!5 <br />