2014-10-10_PERMIT FILE - C1996083 ‎(2)‎

• Permit No: C1996083
• IBM Index Class Name: Permit File
• Doc Date: 10/10/2014
• Doc Name: WWE Subsidence Impact Evaluation - PR14 Spruce Stomp
• Section_Exhibit Name: Volume IIIB Exhibit 23 Spruce Stomp Subsidence Evaluation
• Media Type: D
• Archive: No

6.1.5 Potential for Impacts to Vegetation Community .............. ............................... 23
6.2 Potential Impacts Resulting from Surface Fractures ......................... ............................... 24
6.3 Impacts Resulting from Geologic Hazards ........................................ ............................... 24
6.3.1 Changes in Water Quality ................................................ ............................... 25
6.3.2 Impacts Resulting from Discrete Events .......................... ............................... 25
7.0 SUMMARY OF FINDINGS ............................................................... .............................25
TABLES
(AT END OF REPORT)
Table 1: Monthly Mean Discharge USGS 09132985 E. Fork Terror Creek below Cottonwood Stomp near
Bowie, CO
Table 2: Annual Peak Discharge USGS 09132985 E. Fork Terror Creek below Cottonwood Stomp near
Bowie, CO
Table 3: Monthly Mean Discharge USGS 09132995 Terror Creek at Mouth near Bowie, CO
Table 4: Annual Peak Discharge USGS 09132995 Terror Creek at Mouth near Bowie, CO
Table 5: Average Monthly Flows —West and East Forks Terror Creek
Table 6: West Fork Terror Creek Water Quality
Table 7: Potential Aquatic Life Impacts Summary Table
FIGURES
(AT END OF REPORT)
Figure 1: Location Map
Figure 2: Sub - Surface Mine Works
Figure 3: Hydrology of Potential Project Area
Figure 4: West Fork Terror Creek Watershed Surface Geologic Mapping
Figure 5: Potential Project Area Surface Geologic Mapping
Figure 6: Potential Project Area Natural Resources Conservation Service Mapped Soils
Figure 7: West Fork Terror Creek Habitat Areas
Figure 8: Straight Line Diagram for Terror Creek Drainage
Figure 9: Monthly Mean Discharge USGS 09132985 E. Fork Terror Creek
Figure 10: Monthly Mean Discharge USGS 09132995 Terror Creek at Mouth near Bowie, CO
Figure 11 Flows in West Fork Terror Creek Near Confluence
Figure 12: West Fork Terror Creek Flows- 2001 -2010 Compared to 2002
Figure 13: West Fork Terror Creek Channel Thalweg Profile
Figures 14a –14g: West Fork Terror Creek Channel Thalweg Profile Figures
APPENDICES
1 Cited Resources
2 Sediment Transport Analysis for West Fork Terror Creek
3 West Fork Terror Creek 2012 Fish Population and Macroinvertebrate Sampling Results
4 Subsidence Evaluation of the Western Mining District and the Spruce Stomp Lease Area (Richard
Dunrud, P.E.)