Applicant Prepared Environmental Assessment, With
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WEBER HYDROELECTRIC PROJECT (FERC NO. 1744) DRAFT APPLICATION FOR NEW LICENSE FOR MAJOR CONSTRUCTED PROJECT LESS THAN 5MW EXHIBIT E DRAFT APPLICANT PREPARED ENVIRONMENTAL ASSESSMENT AND APPENDIX A - MEMORANDUM OF AGREEMENT APPENDIX B - DRAFT HISTORIC PROPERTIES MANAGEMENT PLAN APPENDIX C - UPSTREAM FISH PASSAGE CONCEPTUAL DESIGN REPORT APPENDIX D - LETTER: OPERATION OF 1938 POWER WATER AGREEMENT APPENDIX E - COMMUNICATION PLAN APPENDIX F - DRAFT LICENSE CONDITIONS RECOMMENDED BY STAFF APPENDIX G - RESPONSE TO COMMENTS ON THE DRAFT EA DECEMBER 2017 WEBER HYDROELECTRIC PROJECT DRAFT APPLICANT PREPARED ENVIRONMENTAL ASSESSMENT FOR HYDROPOWER RELICENSE Weber Hydroelectric Project FERC Project No. P-1744 Utah Prepared by: PacifiCorp Hydro Resources 1407 West North Temple, Suite 210 Salt Lake City, Utah 84116 For Submission to: Federal Energy Regulatory Commission Office of Energy Projects Division of Hydropower Licensing, West Branch 888 First Street, NE Washington, D.C. 20426 December 2017 TABLE OF CONTENTS ACRONYMS AND ABBREVIATIONS ........................................................................... ix EXECUTIVE SUMMARY ................................................................................................ xi 1.0 INTRODUCTION ..................................................................................................... 1 1.1 APPLICATION ............................................................................................................................ 1 1.2 ALTERNATIVE LICENSING PROCESS................................................................................... 2 1.3 PURPOSE OF ACTION AND NEED FOR POWER ................................................................ 14 1.3.1 Purpose of Action................................................................................................................ 14 1.3.2 Need for Power ................................................................................................................... 14 1.4 STATUTORY AND REGULATORY REQUIREMENTS ....................................................... 15 1.4.1 Federal Power Act ............................................................................................................... 15 1.4.1.1 Section 18 Fishway Prescriptions ................................................................................... 15 1.4.1.2 Section 4(e) Conditions ................................................................................................... 15 1.4.1.3 Section 10(j) Recommendations ..................................................................................... 16 1.4.1.4 Section 30(c) Fish and Wildlife Terms and Conditions .................................................. 16 1.4.2 Clean Water Act .................................................................................................................. 16 1.4.3 Endangered Species Act ...................................................................................................... 17 1.4.4 National Historic Preservation Act ..................................................................................... 17 1.5 PUBLIC REVIEW AND COMMENTS ..................................................................................... 18 1.5.1 Scoping ............................................................................................................................... 18 1.5.2 Interventions ....................................................................................................................... 18 1.5.3 Comments on the License Application ............................................................................... 18 1.5.4 Comments on the Draft APEA ............................................................................................ 19 2.0 PROPOSED ACTION AND ALTERNATIVES .................................................... 20 2.1 NO-ACTION ALTERNATIVE .................................................................................................. 20 2.1.1 Existing Project Boundary .................................................................................................. 20 2.1.2 Existing Project Facilities ................................................................................................... 21 2.1.3 Project Safety ...................................................................................................................... 22 2.1.4 Existing Project Operation .................................................................................................. 23 2.1.5 Existing Environmental Protection, Mitigation, and Enhancement Measures .................... 24 2.2 APPLICANT’S PROPOSAL ...................................................................................................... 25 2.2.1 Proposed Project Boundary ................................................................................................. 25 2.2.2 Proposed Project Facilities .................................................................................................. 26 Weber Hydroelectric Project (P-1744) iii Draft License Application – Exhibit E 2.2.3 Proposed Project Operation ................................................................................................ 26 2.2.4 Proposed Environmental Protection, Mitigation, and Enhancement Measures .................. 27 2.2.4.1 Fish Ladder Construction, Operation, and Maintenance ................................................. 29 2.3 ALTERNATIVES CONSIDERED BUT ELIMINATED FROM DETAILED STUDY ........... 33 2.3.1 Federal Government Takeover of the Project ..................................................................... 33 2.3.2 Issuing a Non-power License .............................................................................................. 33 2.3.3 Decommissioning (Retiring) the Project ............................................................................. 33 2.3.4 Relicensing the Project Without Upstream Fish Passage.................................................... 34 2.3.5 Upstream Fish Passage Options Considered But Eliminated From Detailed Study ........... 34 2.3.5.1 Denil Fishway ................................................................................................................. 35 2.3.5.2 Pool and Weir Fishway Sized to Accommodate the Full Range of Fishway Flow ........ 35 2.3.5.3 Pool and Weir Fishway with Reduced Pool Size and Additional Supplementary Attraction Flow System .................................................................................................................. 36 2.3.5.4 Vertical Slot Fishway Serpentine Style ........................................................................... 36 2.3.5.5 Natural Channel Fishway ................................................................................................ 37 3.0 ENVIRONMENTAL ANALYSIS ......................................................................... 38 3.1 GENERAL DESCRIPTION OF THE RIVER BASIN .............................................................. 38 3.2 SCOPE OF THE CUMULATIVE EFFECTS ANALYSIS ........................................................ 39 3.2.1 Geographic Scope ............................................................................................................... 40 3.2.2 Temporal Scope .................................................................................................................. 41 3.3 PROPOSED ACTION AND ALTERNATIVES ........................................................................ 42 3.3.1 Geological and Soil Resources ........................................................................................... 43 3.3.1.1 Affected Environment ..................................................................................................... 44 3.3.1.2 Environmental Effects ..................................................................................................... 45 3.3.1.3 Cumulative Effects .......................................................................................................... 47 3.3.2 Water Resources ................................................................................................................. 47 3.3.2.1 Affected Environment ..................................................................................................... 47 3.3.2.2 Environmental Effects ..................................................................................................... 64 3.3.2.3 Cumulative Effects .......................................................................................................... 67 3.3.3 Fisheries and Aquatic Resources ........................................................................................ 68 3.3.3.1 Affected Environment ..................................................................................................... 68 3.3.3.2 Environmental Effects ..................................................................................................... 84 3.3.3.3 Cumulative Effects .......................................................................................................... 85 3.3.4 Botanical Resources ............................................................................................................ 86 3.3.4.1 Affected Environment ..................................................................................................... 86 Weber Hydroelectric Project (P-1744) iv Draft License Application – Exhibit E 3.3.4.2 Environmental