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Farmington Mancos-Gallup 2020 Environmental Consequences Supplemental Report

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Farmington Mancos-Gallup 2020 Environmental Consequences Supplemental Report U.S. Department of the Interior February 2020 Bureau of Land Management - Farmington Field Office Bureau of Indian Affairs - Navajo Regional Office Farmington Mancos-Gallup 2020 Environmental Consequences Supplemental Report MISSION STATEMENTS BLM It is the mission of the Bureau of Land Management to sustain the health, diversity, and productivity of the public lands for the use and enjoyment of present and future generations. BIA The Bureau of Indian Affairs’ mission is to enhance the quality of life, to promote economic opportunity, and to carry out the responsibility to protect and improve the trust assets of American Indians, Indian tribes, and Alaska Natives. Cover Photo: View of Angel Peak Scenic Area. Photo taken by EMPSi. TABLE OF CONTENTS Chapter Page FARMINGTON MANCOS-GALLUP 2020 ENVIRONMENTAL CONSEQUENCES SUPPLEMENTAL REPORT............................................................................................ EC-1 EC.1 Introduction ................................................................................................................................ EC-1 EC.1.1 Analytical Assumptions .............................................................................................. EC-1 EC.1.2 Types of Impacts to Be Addressed ......................................................................... EC-2 EC.2 Supplemental Resources .......................................................................................................... EC-4 EC.2.1 Air Resources .............................................................................................................. EC-4 EC.2.2 Geology ...................................................................................................................... EC-24 EC.2.3 Water Resources ..................................................................................................... EC-25 EC.2.4 Riparian Areas and Wetlands ............................................................................... EC-28 EC.2.5 Upland Vegetation and Soils .................................................................................. EC-31 EC.2.6 Noxious Weeds and Invasive Plants ................................................................... EC-35 EC.2.7 Wildlife ....................................................................................................................... EC-36 EC.2.8 Special Status Species .............................................................................................. EC-40 EC.2.9 Cultural Resources .................................................................................................. EC-41 EC.2.10 Paleontological Resources ..................................................................................... EC-44 EC.2.11 Visual Resources ...................................................................................................... EC-47 EC.2.12 Noise Resources ...................................................................................................... EC-50 EC.2.13 Lands with Wilderness Characteristics .............................................................. EC-51 EC.3 Resource Uses ......................................................................................................................... EC-54 EC.3.1 Livestock Grazing .................................................................................................... EC-54 EC.3.2 Minerals ...................................................................................................................... EC-56 EC.3.3 Forestry ...................................................................................................................... EC-59 EC.3.4 Lands and Realty ...................................................................................................... EC-60 EC.3.5 Recreation and Visitor Services ........................................................................... EC-63 EC.4 Specially Designated Areas ................................................................................................... EC-63 EC.4.1 Wilderness and Wilderness Study Areas........................................................... EC-63 EC.4.2 Specially Designated Areas .................................................................................... EC-64 EC.5 Social and Economic Conditions ......................................................................................... EC-64 EC.5.1 Native American Tribal Interests and Uses ...................................................... EC-64 EC.5.2 Social and Economic Uses ..................................................................................... EC-67 EC.5.3 Environmental Justice .............................................................................................. EC-75 EC.5.4 Public Health and Safety ......................................................................................... EC-77 EC.6 References ................................................................................................................................ EC-81 Farmington Mancos-Gallup 2020 Environmental Consequences Supplemental Report EC-i Table of Contents TABLES Page EC-1 FMG RMPA/EIS RFD Projections by Alternative .............................................................................. EC-8 EC-2 2025 New Mexico Mancos Shale Emissions from Construction and Production Activity ........................................................................................................................................................ EC-9 EC-3 Air Quality and AQRV Indicators ...................................................................................................... EC-10 EC-4 2025 Farmington Field Office Maximum Contribution to the 4th Highest Daily Maximum 8-Hour Ozone Concentration ........................................................................................ EC-11 EC-5 Maximum Contribution to the 4th Highest Daily Maximum 8-Hour Ozone Concentration, Farmington Field Office and Total Source Groups .......................................... EC-12 EC-6 Base and 2025 Future Year Ozone Design Values at Monitoring Sites .................................... EC-12 EC-7 Maximum Contribution to the 8th High 24-hour PM2.5 Concentration, Farmington Field Office and Total Source Groups ....................................................................... EC-13 EC-8 2025 Farmington Field Office Maximum Contribution to Annual Average PM2.5 Pollutant Concentrations ..................................................................................................................... EC-14 EC-9 Maximum Contribution to the 2nd Highest 24-hour PM10 Concentration, Farmington Field Office and Total Source Groups ....................................................................... EC-14 EC-10 Maximum Concentration at any Class I or Sensitive Class II Area from the Farmington Field Office Projected Oil and Gas Activities ........................................................... EC-16 EC-11 Contributions of Farmington Field Office Emissions to PSD Pollutant Concentrations at Class I and Sensitive Class II Areas for the 2025 High Development Scenario ................. EC-17 EC-12 Maximum Concentration at any Class I or Sensitive Class II Area ........................................... EC-18 EC-13 Maximum Change in Deciviews at the Aztec Ruins National Monument Sensitive Class II Area ............................................................................................................................................ EC-19 EC-14 2025 Farmington Field Office Maximum Planning Area New Federal Oil and Gas Contributions to Modeled Nitrogen Deposition Impacts ........................................................... EC-20 EC-15 Nitrogen Deposition from Total 2025 Sources for Class I and Sensitive Class II Areas within 100 Kilometers of the Planning Area ....................................................................... EC-22 EC-16 2025 Upstream and Midstream Greenhouse Gas Emissions from Federal and Cumulative Oil and Gas Production ................................................................................................. EC-23 EC-17 Potential Quality of Life Impacts from Oil and Gas Development ............................................ EC-73 FIGURES Page EC-1 Existing Well Densities in the BIA and BLM Decision Areas ...................................................... EC-39 EC-2 Existing Leases in the BIA and BLM Decision Areas ..................................................................... EC-39 EC-3 Development Potential ......................................................................................................................... EC-39 EC-ii Farmington Mancos-Gallup 2020 Environmental Consequences Supplemental Report Farmington Mancos-Gallup 2020 Environmental Consequences Supplemental Report EC.1 INTRODUCTION This supplemental report presents the analysis methodology and nature of impacts that were develop to analyze the likely direct, indirect, and cumulative impacts, as presented in Chapter 3 of the Farmington Mancos-Gallup (FMG) Resource Management Plan Amendment/Environmental Impact Statement (RMPA/EIS) (the FMG RMPA/EIS). This report is organized by resource topic. Unless otherwise noted, all references to chapters and appendices are referring to chapters in the FMG RMPA/EIS. EC.1.1 Analytical Assumptions Several assumptions were made to facilitate the analysis of the projected impacts. These assumptions
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