ADOT Herbicide Treatment Program on Bureau of Land Management Lands in Arizona
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October 2015 BLM DOI-BLM-AZ-0000-2013-0001-EA ADOT Herbicide Treatment Program on Bureau of Land Management Lands in Arizona Final Environmental Assessment Bureau of Land Management Environmental Assessment and Section 4(f) Evaluation ADOT Herbicide Treatment Program on Bureau of Land Management Lands in Arizona DOI-BLM-AZ-0000-2013-0001-EA Bureau of Land Management Arizona State Office One North Central Avenue, Suite 800 Phoenix, Arizona 85004-4427 October 2015 TABLE OF CONTENTS Table of Contents ............................................................................................................................. i List of Tables ................................................................................................................................... iii List of Figures .................................................................................................................................. iii Acronym List ................................................................................................................................... iv Section 1 – Proposed Action, Purpose and Need, and Background Information ........................... 1 1.1 Introduction...................................................................................................................... 1 1.2 Proposed Action Overview ............................................................................................... 3 1.3 Purpose and Need for Action ........................................................................................... 4 1.3.1 Undesirable Vegetation ............................................................................................ 4 1.3.2 Invasive Plant Infestations ........................................................................................ 5 1.3.3 Hazardous Vegetation ............................................................................................... 6 1.3.4 Roadway Right-of-Way Maintenance ....................................................................... 7 1.3.5 Driver Safety.............................................................................................................. 7 1.4 Decision to be Made ........................................................................................................ 9 1.5 Documents Incorporated by Reference ......................................................................... 10 1.6 Relationship to Statutes, Regulations, and Policies ....................................................... 10 1.7 Plan Conformance .......................................................................................................... 13 1.8 Key Issues ....................................................................................................................... 14 Section 2 – Alternatives ................................................................................................................ 15 2.1 Proposed Action ............................................................................................................. 15 2.1.1 General Standard Operating Procedures ................................................................ 18 2.1.2 Best Management Practices ................................................................................... 20 2.1.3 Resource Specific Mitigation Measures .................................................................. 21 2.2 No Action Alternative ..................................................................................................... 24 Section 3 – Affected Environment and Consequences ................................................................. 25 3.1 Resources That Would Not Be Affected ......................................................................... 25 3.2 Biological Resources ....................................................................................................... 26 3.2.1 Federally Listed Species .......................................................................................... 26 3.2.2 BLM Sensitive Species ............................................................................................. 32 3.2.3 Migratory Birds and Eagle Protection ..................................................................... 36 3.2.4 Invasive Species/Noxious Weeds ............................................................................ 38 3.2.5 Non-Sensitive Wildlife and Vegetation ................................................................... 39 i 3.2.6 Livestock Grazing and Rangeland Health ................................................................ 40 3.2.7 Wild Horses and Burros .......................................................................................... 42 3.3 Water Quality ................................................................................................................. 45 3.3.1 Clean Water Act ...................................................................................................... 45 3.3.2 Wetlands/Riparian Zones........................................................................................ 48 3.3.3 Wild and Scenic Rivers ............................................................................................ 50 3.3.4 Groundwater Resources ......................................................................................... 53 3.4 Land Management ......................................................................................................... 54 3.4.1 Wilderness Areas .................................................................................................... 54 3.4.2 Areas of Critical Environmental Concern ................................................................ 56 3.4.3 National Monuments .............................................................................................. 58 3.5 Recreation ...................................................................................................................... 60 3.6 Fuels/Fire Management ................................................................................................. 61 3.7 Human Health and Safety .............................................................................................. 62 3.8 Soils ................................................................................................................................ 64 3.9 Visual Quality .................................................................................................................. 65 3.10 Paleontological Resources ............................................................................................. 67 3.11 Cultural Resources.......................................................................................................... 68 3.12 Resources Protected Under Section 4(f) ....................................................................... 72 3.13 Resources Protected under Section 6(f) ....................................................................... 73 Section 4 Cumulative Impacts ..................................................................................................... 744 Section 5 –Mitigation Measures ................................................................................................... 75 Habitat Conservation Measures ............................................................................................. 755 Herbicide Specific Conservation Measures ............................................................................ 766 General Conservation Measures for Threatened and Endangered Species .......................... 800 Threatened and Endangered Species-Specific Conservation Measures ................................ 811 BLM Sensitive Species Specific Conservation Measures ........................................................ 988 Section 6 – Persons and Agencies Consulted ........................................................................... 1022 Section 7 – List of Preparers and Reviewers ............................................................................. 1033 Section 8 – References .............................................................................................................. 1044 APPENDIX A – BLM Approved Herbicides and Adjuvants ............................................................ A-1 APPENDIX B – BLM Sensitive Species Evaluation ........................................................................ B-1 APPENDIX C – Ecotoxicity Ratings for Herbicide Active Ingredients ........................................... C-1 ii LIST OF TABLES Table 1.1. Summary of Applicable Laws and Regulations. ........................................................... 10 Table 3.1. USFWS Species Potentially Occurring Within ADOT ROW on BLM-Managed Land. ... 27 Table 3.2. BLM River Study Areas and Outstandingly Remarkable Values. ................................. 51 Table 3.3. National Monuments in Arizona. ................................................................................. 58 Table A-1. Approved Herbicides .................................................................................................. A-1 Table A-2. Approved Adjuvants ................................................................................................... A-3 Table B-1. BLM Arizona Species List ............................................................................................ B-1 Table B-2. BLM Sensitive Species by ADOT District and BLM Field Office ................................