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FINAL ENVIRONMENTAL ASSESSMENT KENTUCKY DAM-NASHVILLE 161-KV TRANSMISSION LINE TAP AND SCREAMING EAGLES SUBSTATION Fort Campbell, Montgomery County, Tennessee TENNESSEE VALLEY AUTHORITY JUNE 2003 Draft Environmental Assessment i TABLE OF CONTENTS 1. PURPOSE OF AND NEED FOR ACTION................................................................................... 1 1.1. The Decision................................................................................................................
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  FINAL ENVIRONMENTAL ASSESSMENT KENTUCKY DAM-NASHVILLE 161-KV TRANSMISSIONLINE TAP AND SCREAMING EAGLES SUBSTATION Fort Campbell, Montgomery County, Tennessee TENNESSEE VALLEY AUTHORITYJUNE 2003  TABLE OF CONTENTS 1. PURPOSE OF AND NEED FOR ACTION...................................................................................1 1.1. The Decision...............................................................................................................................11.1.1. Need......................................................................................................................................11.1.2. Proposed Action....................................................................................................................11.2. Public Involvement.....................................................................................................................11.3. Necessary Permits or Licenses.................................................................................................2 2. ALTERNATIVES INCLUDING THE PROPOSED ACTION........................................................3 2.1. Alternatives.................................................................................................................................32.1.1. Alternative 1 – Construct Transmission Line and Substation.............................................32.1.2. Alternative 2 – The No Action Alternative............................................................................32.2. Description of Construction, Operation, and Management of the Proposed Substationand 161-kV Transmission Line..................................................................................................32.2.1. Substation Construction........................................................................................................32.2.2. Transmission Line Construction...........................................................................................32.2.2.1. Structures and Conductors..............................................................................................32.2.2.2. Right-of-Way.....................................................................................................................42.2.2.3. Access Roads...................................................................................................................52.2.2.4. Construction Assembly Areas..........................................................................................52.2.2.5. Conductor and Ground Wire Installation.........................................................................62.2.3. Operation and Maintenance.................................................................................................62.2.3.1. Inspection..........................................................................................................................62.2.3.2. Vegetation Management..................................................................................................62.3. Project and Siting Alternatives...................................................................................................72.3.1. Definition of Study Area........................................................................................................72.3.2. Collect Data...........................................................................................................................82.3.3. Develop Potential Routes.....................................................................................................82.3.3.1. Route A.............................................................................................................................92.3.3.2. Route B.............................................................................................................................92.3.3.3. Route C.............................................................................................................................92.3.3.4. Route D...........................................................................................................................102.3.4. Establish and Apply Siting Criteria.....................................................................................102.3.5. Identification of Preferred Alternative.................................................................................122.4. Summary of Mitigation Measures............................................................................................12 3. AFFECTED ENVIRONMENT......................................................................................................13 3.1. Groundwater.............................................................................................................................133.2. Surface Water...........................................................................................................................133.3. Vegetation.................................................................................................................................143.4. Wildlife ......................................................................................................................................153.5. Aquatic Ecology........................................................................................................................153.6. Endangered and Threatened Species ....................................................................................163.7. Natural Areas............................................................................................................................183.8. Wetlands...................................................................................................................................19  3.9. Floodplains ...............................................................................................................................203.10. Recreation ................................................................................................................................203.11. Visual Resources .....................................................................................................................203.12. Cultural Resources...................................................................................................................21 4. ENVIRONMENTAL CONSEQUENCES.....................................................................................23 4.1. Groundwater.............................................................................................................................234.1.1. Alternative 1 – Transmission Line and Substation............................................................234.1.2. Alternative 2 – No Action....................................................................................................234.2. Surface Water...........................................................................................................................234.2.1. Alternative 1 – Transmission Line and Substation............................................................234.2.2. Alternative 2 – No Action....................................................................................................234.3. Vegetation.................................................................................................................................244.3.1. Alternative 1 – Transmission Line and Substation............................................................244.3.2. Alternative 2 – No Action....................................................................................................244.4. Wildlife ......................................................................................................................................244.4.1. Alternative 1 – Transmission Line and Substation............................................................244.4.2. Alternative 2 – No Action....................................................................................................244.5. Aquatic Ecology........................................................................................................................244.5.1. Alternative 1 – Transmission Line and Substation............................................................244.5.2. Alternative 2 – No Action....................................................................................................254.6. Endangered and Threatened Species ....................................................................................274.6.1. Alternative 1 – Transmission Line and Substation............................................................274.6.2. Alternative 2 – No Action....................................................................................................274.7. Natural Areas............................................................................................................................274.7.1. Alternative 1 – Transmission Line and Substation............................................................274.7.2. Alternative 2 – No Action....................................................................................................274.8. Wetlands...................................................................................................................................274.8.1. Alternative 1 – Transmission Line and Substation............................................................274.8.2. Alternative B – No Action....................................................................................................284.9. Floodplains ...............................................................................................................................284.9.1. Alternative 1 – Transmission Line and Substation............................................................284.9.2. Alternative 2 – No Action....................................................................................................284.10. Recreation ................................................................................................................................294.10.1. Alternative 1 – Transmission Line and Substation............................................................294.10.2. Alternative 2 – No Action....................................................................................................294.11. Visual Resources .....................................................................................................................294.11.1. Alternative 1 – Transmission Line and Substation............................................................294.11.2. Alternative 2 – No Action....................................................................................................304.12. Cultural Resources...................................................................................................................304.12.1. Alternative 1 – Transmission Line and Substation............................................................304.12.2. Alternative 2 – No Action....................................................................................................31 5. SUPPORTING INFORMATION..................................................................................................32 5.1. List of Preparers.......................................................................................................................325.2. List of Agencies and Persons Consulted................................................................................335.3. Literature Cited.........................................................................................................................34 LIST OF APPENDICES  APPENDIX A – CORRESPONDENCE....................................................................................................37    APPENDIX B – WETLAND DATA FORMS..............................................................................................45 APPENDIX C – RIGHT-OF-WAY CLEARING SPECIFICATIONS.........................................................51 APPENDIX D – ENVIRONMENTAL QUALITY PROTECTION SPECIFICATIONS FORTRANSMISSION LINE CONSTRUCTION....................................................................56 APPENDIX E – ENVIRONMENTAL QUALITY PROTECTION SPECIFICATIONS FORTRANSMISSION SUBSTATION OR COMMUNICATIONS CONSTRUCTION..........61 APPENDIX F – RIGHT-OF-WAY VEGETATION MANAGEMENT.........................................................67 APPENDIX G – TVA TRANSMISSION CONSTRUCTION GUIDELINES NEAR STREAMS...............72 LIST OF TABLES Table 3-1.Major vegetation types in the project area...........................................................................14Table 3-2.Federally-listed and state-listed plant species reported from the project area...................16Table 3-3.Federally-listed and state-listed terrestrial animals reported from the project area...........17Table 3-4.Wetlands in the project area.................................................................................................19Table 4-1.Approximate locations and levels of protection for watercourses with the right-of-way of the proposed transmission line.................................................................................25 LIST OF FIGURES Figure 1.Single-pole (a) and H-frame (b) 161-kV transmission structures..........................................4Figure 2. Project study area and alternative transmission line routes. ………………………………..Figure 3. Preferred transmission line route. ……………………………………………………………...
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