Appendix D Explanation of Route Changes Prepared by: Idaho Power Company W Idaho Street Boise, ID 80
Map Label ID 6 Route Reference Added November 0 Horn Butte Substation Added November 0 Horn Butte Eliminated June 00 Northern Approach to Grassland Map Number Reference from Appendix D Map Map Map Map Map Map - Map - Approximate Milepost Location relative to Nov. 0 and Routes Grassland Substation Route MP 9 Route MP 6.8 Route MP 6.8. Route MP - 8 Route MP 0- Route MP 6-8 Grassland Substation - Route MP IPC Route Change Description Route shifted north to follow Boardman to Slatt Existing Line Potential Project termination and interconnection to Boardman to Slatt existing transmission line Added Stay closer to Property Boundary/TNC Boundary Stay on Property Boundary Centerline Adjustment Eliminated Segment of June 00 POD IPC Basis for Route Change Avoids crossing north edge of The Nature Conservancy with Washington Ground Squirrel (WAGS) colonies Shortens overall length of transmission line and avoids WAGS colonies Connect to Substation Adjusted route per landowner discussion Adjusted route per landowner discussion Pivot irrigation, property line offsets and building offset distances, tower spotting analysis 0 surveys identified potential effects to WAGS colonies; alternative Longhorn Substation would preclude need to have a northern route to the proposed Grassland Substation
Map Label ID 8 9 0 Route Reference Added November 0 Longhorn Substation Added November 0 Longhorn Map Number Reference from Appendix D Map Map Map Map Map Map Map - Map Approximate Milepost Location relative to Nov. 0 and Routes NA Longhorn MP 0-9 Route MP 0-6 Route MP 6.- 66 Route MP 6-69 Route MP - Route MP - Route MP 8-90 IPC Route Change Description Potential Project termination and interconnection to Slatt to McNary existing transmission line Added Stay on north side of Slusher Canyon Shifted route north Remove angles in route Remove angles in route Shifted route south Shifted route north IPC Basis for Route Change Longhorn Substation would preclude need to have a northern route to the proposed Grassland Substation Connect to Substation Avoids crossing Slusher Canyon twice and stream crossings Engineering assessment to improve constructability Engineering assessment to improve constructability Engineering assessment to improve constructability Landowner request to avoid homes, avoids difficult terrain, less access roads, avoids access off of Indian Reservation Adjusted route to avoid canyon crossings
Map Label ID 6 8 9 0 Route Reference Adjusted June 00/November 0 Glass Hill Map Number Reference from Appendix D Map Map Map Map Map - Map Map - Approximate Milepost Location relative to Nov. 0 and Routes Route MP 9-9. Route MP 99-0 Route MP 0-0. Route MP 08- Glass Hill MP MP Route MP - 8 Route MP 8- IPC Route Change Description Centerline Adjustment Centerline Adjustment Centerline Adjustment Route shifted east ~ miles Eliminated portion of Glass Hill Route shifted south Route shifted west IPC Basis for Route Change Better use of existing access roads, engineering assessment to improve constructability Avoid State Park, engineering assessment to improve tower locations Adjust alignment to follow WECC offset criteria from existing lines Adjusted line route to follow existing BPA line route and utilize existing access roads per landowner request, avoid adding access roads in timbered areas Difficult terrain forced alternative to tie back into at earlier point Avoid OSU Research Forest, adjusted per landowner discussion Difficult terrain, engineering assessment to improve constructability
Map Label ID 6 8 9 0 Route Reference Eliminated June 00 Clover Creek Valley Eliminated June 00 Virtue Flat Eliminated June 00 Weatherby Map Number Reference from Appendix D Map Map Map Map Map Map Map 6 Map 6 Map 6 Approximate Milepost Location relative to Nov. 0 and Routes Route MP - 9 Route MP 9-. Route MP - Route MP.-68. Route MP - 6 Route MP 6-6 Route MP 8-8 Route MP.-8 Route MP.-90 IPC Route Change Description Eliminated Route Shifted route north Shifted route east Eliminated Route Centerline Adjustment Shift route north Shifted route west Centerline Adjustment Eliminated Route IPC Basis for Route Change No environmental advantage to alternative which also requires crossings of existing 0-kV line Difficult terrain, engineering assessment to improve constructability, follow WECC offset criteria from existing lines Adjusted route to reduce visibility from NHOTIC could not be sited to avoid occupied Sage-grouse lek -mile buffers Engineering assessment to improve constructability Improve crossing of and better utilize existing 8kV corridor Adjusted route per landowner discussion concerning avoidance of natural amphitheater Adjusted route per landowner discussion Difficult terrain, Rebuild a better option
Map Label ID 6 8 Route Reference Added November 0 Rebuild Added November 0 Malheur S Map Number Reference from Appendix D Map 6 Map Map -8 Map 8 Map 8 Map 8-9 Map 8-9 Approximate Milepost Location relative to Nov. 0 and Routes Route MP 86.-9. Route MP 0.- Route MP - Route MP - Route MP - 8. Route MP 8- Route MP - IPC Route Change Description 00kV line to be built within existing 8kV ROW; existing 8kV and lines to be rebuilt as double circuit structures in existing ROW Shifted route north and west Shifted route west Shifted route west Realignment across Malheur River Relocated Route to the east Added IPC Basis for Route Change Difficult terrain Avoid crossing occupied Sagegrouse lek -mile buffers, adjusted per landowner discussions, engineering assessment to improve constructability across canyon Avoid crossing occupied Sagegrouse lek -mile buffer identified in 0 survey season Engineering assessment to improve constructability Avoid sensitive resource areas Avoid areas inventoried as having wilderness characteristics, avoid ACEC, follow Vale District Utility Corridor Avoid areas inventoried as having wilderness characteristics, minimizes ACEC crossing
Map Label ID 9 0 Route Reference Added November 0 Double Mountain Eliminated June 00 Owyhee River Below Dam Map Number Reference from Appendix D Map 8 Map 9 Approximate Milepost Location relative to Nov. 0 and Routes MP - South of Malheur S MP 9- IPC Route Change Description Added Eliminated Route Map 0 MP -6 Shift route south Map 0 MP 80- Shift route south IPC Basis for Route Change Avoid private land/stay on BLMmanaged land Relocation of no need for alternative Avoid crossing EFU zoned land Avoid private land, follow WECC offset criteria from existing lines
KLICKITAT COUNTY 0kV 0kV kv kv BENTON COUNTY 00kV 00kV 0kV BOARDMAN 00kV ID 8 LONGHORN SUBSTATION 0 00kV Umatilla Army Depot 8 8 9 0kV 9 0 9 0kV 00kV ID 6 00kV 0kV Naval Weapons System Training Facility 8 9 MP 0 UMATILLA COUNTY ID ID 00kV 6 HORN BUTTE SUBSTATION GRASSLAND SUBSTATION MORROW COUNTY ID 9 0 8 6 ID 9 ID MP 0 CECIL 6 ID 8 9 MP 0 ID 6 kv 8 9 MP 0 ID 8 6 8 9 MP 0 ID 6 OCTOBER 0 POD PROPOSED ROUTE \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map of 0
0 0 0 9 PENDLETON 0 ID 6 ID 0kV 0kV 6 8 9 MP 0 UMATILLA COUNTY ID 0 ID 6 8 9 MP 60 6 6 ID 6 6 66 6 6 68 69 MP 0 Confederated Tribes of the Umatilla Indian Reservation ID PILOT ROCK 6 8 9 ID 8 MP 80 8 8 MORROW COUNTY 9 \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map of 0
8 8 ID 8 86 8 88 89 MP 90 ID 9 9 UMATILLA COUNTY 9 ID 6 9 9 96 0kV Wallowa-Whitman National Forest 9 98 99 MP 00 8 ID 0 0 0 Wallowa-Whitman National Forest 0 0 06 UNION COUNTY ID 8 0 08 09 MP 0 8 LA GRANDE 0 ID 9 6 ID ID 0 6 8 0kV 0 \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map of 0
8 9 ID ID 0 MP 0 6 ID Wallowa-Whitman National Forest UNION COUNTY 0 Wallowa-Whitman National Forest 8 9 MP 0 ID 0kV NORTH POWDER 6 BAKER COUNTY 8 9 0 MP 0 GRANT COUNTY \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map of 0
0kV 6 8 0 KEATING 0 BAKER COUNTY 9 MP 0 0kV ID 86 NATIONAL HISTORIC OREGON TRAIL INTERPRETIVE CENTER Wallowa-Whitman National Forest BAKER CITY 0kV ID ID 6 6 8 9 MP 60 6 6 8kV 8kV 8kV 6 6 6 ID 8 66 6 68 69 \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map of 0
8kV 68 69 MP 0 8kV 6 8 DURKEE 9 MP 80 ID 9 8 8 MINERAL 8kV 8 BAKER COUNTY 8 86 WEATHERBY ID 0 ID 8 88 ID WASHINGTON COUNTY 89 9 9 MP 90 MALHEUR COUNTY 9 9 LIME 0 \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map 6 of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map 6 of 0
9 9 LIME 96 9 BAKER COUNTY 98 0 HUNTINGTON 99 8kV MP 00 0 WASHINGTON COUNTY 0 MALHEUR COUNTY MP 0 09 ID 08 0 06 0 0 0 6 6 BROGAN 0 8 9 MP 0 ID \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map of 0
6 ID 8 9 6 MP 0 WESTFALL ID MALHEUR COUNTY 6 0 VALE ID 6 8 0 9 MP 0 HARPER ID ID 8 6 ID 9 8 9 6 MP 0 0 \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map 8 of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map 8 of 0
0 ID 9 6 MP 0 PAYETTE COUNTY 6 0 8 9 6 PARMA MP 0 8 CANYON COUNTY 0 0 MALHEUR COUNTY ID 8 9 MP 60 6 6 6 0 ADRIAN 6 8 9 MP 0 6 6 00kV ID 0 6 66 6 9 9 8 68 9 MP 0 69 MP 0 9 HOMEDALE OWYHEE COUNTY APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map 9 of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd ID National Park Service Other Federal Private State 6 U.S. Fish and Wildlife Service 8 U.S. Forest Service 9 0 Map 9 of 0
8kV 8kV ID 6 8 MARSING NAMPA 8kV 8kV 8kV 8kV 9 MP 80 6kV ID 8 8 8 8 9 MALHEUR COUNTY 86 8 88 89 MP 90 00kV 9 CANYON COUNTY 8kV 8kV OWYHEE COUNTY 9 8 9 9 9 96 MELBA 9 98 99 HEMINGWAY SUBSTATION \Spatial\MXD\0_0_POD\AppendixD_RouteChanges_0600_00.mxd APPENDIX D ROUTE & SUBSTATION CHANGES JUNE 00 POD vs OCTOBER 0 POD Map 0 of 0 BOARDMAN TO HEMINGWAY 00kV TRANSMISSION LINE PROJECT OREGON-IDAHO NOVEMBER 0 0 Miles October 0 POD Routes 8/68kV Rebuild Route June 00 POD Routes June 00 POD June 00 POD Route Substation Substation October 0 Ten Mile Marker October 0 Mile Marker Existing Transmission Line City/Town State Boundary County Boundary Bureau of Land Management Bureau of Reclamation Department of Defense Indian Reservation National Park Service Other Federal Private State U.S. Fish and Wildlife Service U.S. Forest Service 6 8 9 0 Map 0 of 0