Northwest Corridor
LRT Line to Irving/DFW Airport
Final Environmental Impact Statement

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TABLE OF CONTENTS

LIST OF FIGURES vii
LIST OF TABLES ix
FOREWORD (42KB PDF)
EXECUTIVE SUMMARY (1.9MB PDF) ES-1
1.0 PURPOSE AND NEED (6.2MB PDF - includes sections 1.1 through 1.5) 1-1
1.1 Goals and Objectives (53KB PDF - includes section 1.1)
1-3
1.2 Relevant System Planning Activities (70KB PDF - includes section 1.2)
1-3
1.3 Overview of the Corridor (2.6MB PDF - includes section 1.3)
1-5
1.3.1 Population and Employment
1-9
1.3.2 Travel Patterns and Congestion
1-9
1.3.3 Existing Transit Conditions
1-10
1.4 Need for Action (66KB PDF - includes section 1.4)
1-11
1.4.1 Specific Transportation Needs in the Corridor
1-11
1.4.2 Purposes of the Proposed Action
1-12
1.5 Planning Context (1.8MB PDF - includes section 1.5)
1-13
1.5.1 Decision Framework
1-13
1.5.2 Selection of the LPIS and Subsequent Refinements
1-13
1.5.3 The Role of the EIS in Project Development
1-15
2.0 ALTERNATIVES CONSIDERED (35.0MB PDF - includes sections 2.1 through 2.3) 2-1
2.1 Major Investment Study (MIS) Alternatives (8.0MB PDF - includes section 2.1)
2-1
2.1.1 Screening and Selection Process
2-1
2.1.2 Conceptual MIS Alternatives
2-1
2.1.3 Detailed MIS Alternatives
2-2
2.1.4 Rationale for Choosing the Locally Preferred Investment Strategy (LPIS)
2-2
2.1.5 Alignment Modifications Since Completion of the MIS
2-5
2.2 Selected LRT Alternative (27.7MB PDF - includes section 2.2)
2-9
2.2.1 Alignment
2-12
2.2.2 LRT Stations
2-15
2.2.3 Capital Costs
2-25
2.2.4 Bus Operating Plan
2-25
2.2.5 Rail Operating Plan
2-30
2.2.6 Rail Operating Facility
2-33
2.2.7 Operations and Maintenance Cost
2-34
2.3 Other Alternatives Considered (58KB PDF - includes section 2.3)
2-35
2.3.1 No-Build Alternative
2-36
3.0 AFFECTED ENVIRONMENT (87.5MB PDF - includes sections 3.1 through 3.14) 3-1
3.1 Land Use (49.3MB PDF - includes section 3.1)
3-1
3.1.1 Regional Summary
3-1
3.1.2 Existing Land Use
3-3
3.1.3 Local Land Use Plans and Policies
3-7
3.1.4 Schools, Community Services, Facilities, and Resources
3-9
3.1.5 Major Activity Centers
3-12
3.2 Socioeconomic Characteristics and Neighborhoods (1.6MB PDF - includes section 3.2)
3-16
3.2.1 Population Dynamics and Demographic Profiles
3-16
3.2.2 Labor Force and Employment Centers
3-23
3.2.3 Neighborhoods
3-26
3.3 Transportation (2.4MB PDF - includes section 3.3)
3-28
3.3.1 Transportation Infrastructure
3-28
3.3.2 Traffic Volumes and Trends
3-32
3.3.3 Transit Operations and Ridership
3-36
3.3.4 Movement of Freight
3-38
3.3.5 Non-Motorized Circulation
3-40
3.3.6 Parking
3-42
3.3.7 Regional Transportation Improvement Plans
3-42
3.4 Air Quality (669KB PDF - includes section 3.4)
3-44
3.4.1 Air Quality Standards and Regulatory Setting
3-44
3.4.2 Existing Setting
3-49
3.4.3 Sensitive Receptors
3-51
3.4.4 Transit Air Impact Quality Criteria
3-53
3.5 Noise (615KB PDF - includes section 3.5)
3-53
3.5.1 Transit Noise Criteria
3-54
3.5 2 Existing Noise Conditions
3-55
3.6 Vibration (691KB PDF - includes section 3.6)
3-59
3.6.1 Ground-Borne Vibration Criteria
3-61
3.6.2 Existing Vibration Conditions
3-62
3.7 Visual and Aesthetic Resources (8.7MB PDF - includes section 3.7)
3-64
3.7.1 Overview of the Corridor
3-64
3.7.2 Corridor Assessment Unit Description
3-64
3.8 Historical Resources (223KB PDF - includes section 3.8)
3-69
3.8.1 Applicable Legal and Regulatory Requirements
3-69
3.8.2 Cultural Resources
3-72
3.8.3 Historic Resources
3-72
3.9 Archeological Resources (1.5MB PDF - includes section 3.9)
3-72
3.9.1 Methodology
3-74
3.9.2 Archeological Resources Survey
3-74
3.9.3 Site Potential within Proposed Station Areas
3-75
3.10 Parklands (201KB PDF - includes section 3.10)
3-75
3.10.1 Inventory of Resources
3-75
3.10.2 Parks
3-76
3.11 Ecosystems (18.7MB PDF - includes section 3.11)
3-76
3.11.1 Waters and Wetlands Inventory
3-76
3.11.2 Vegetation Inventory
3-92
3.11.3 Wildlife Inventory
3-96
3.11.4 Protected Species
3-97
3.12 Geology and Soils (3.6MB PDF - includes section 3.12)
3-100
3.12.1 Geology
3-100
3.12.2 Soils
3-101
3.13 Hydrology/Water Quality (1.3MB PDF - includes section 3.13)
3-107
3.13.1 Floodplains
3-107
3.14 Hazardous/Regulated Materials (926KB PDF - includes section 3.14)
3-109
3.14.1 Methodology
3-109
3.14.2 Identified Sites
3-109
4.0 TRANSPORTATON IMPACTS (3.5MB PDF - includes section 4.1 through 4.5) 4-1
4.1 Impacts of Transit Service and Ridership (81KB PDF - includes section 4.1)
4-1
4.1.1 Transit Levels of Service
4-1
4.1.2 Transit Ridership
4-5
4.2 Highway and Roadway Impacts (2.3MB PDF - includes section 4.2)
4-6
4.2.1 Regional Impacts
4-8
4.2.2 Local Impacts
4-9
4.2.3 Transit Station Access
4-18
4.2.4 Pedestrian Safety
4-22
4.2.5 Station Area Mitigation
4-22
4.3 Impacts on Movement of Freight (48KB PDF - includes section 4.3)
4-22
4.3.1 Freight Railroads
4-22
4.3.2 Trucking and Deliveries
4-23
4.3.3 Freight Movement Mitigation
4-23
4.4 Impacts on Non-Motorized Circulation (1.3MB PDF - includes section 4.4)
4-23
4.4.1 Pedestrian Movements
4-23
4.4.2 Bicycles
4-23
4.4.3 Non-Motorized Circulation Mitigation
4-25
4.5 Impacts on Parking (43KB PDF - includes section 4.5)
4-25
5.0 ENVIRONMENTAL CONSEQUENCES (15.4MB PDF - includes sections 5.1 through 5.21) 5-1
5.1 Land Use and Economics (112KB PDF - includes section 5.1)
5-1
5.1.1 Land Use Impacts
5-1
5.1.2 Economic Impacts
5-7
5.1.3 Land Use Mitigation
5-9
5.2 Acquisitions and Displacement (78KB PDF - includes section 5.2)
5-9
5.2.1 No-Build Alternative
5-9
5.2.2 LRT Alternative
5-9
5.2.3 Acquisition and Displacement Mitigation
5-11
5.3 Air Quality (94KB PDF - includes section 5.3)
5-12
5.3.1 Impact Assessment
5-12
5.3.1.1 Methodology
5-12
5.3.1.2 Project Impacts
5-14
5.3.2 Project Conformity Assessment
5-15
5.3.3 Air Quality Mitigation
5-17
5.4 Noise (91KB PDF - includes section 5.4)
5-17
5.4.1 Noise Impact Assessment
5-17
5.4.2 Noise Impact Mitigation
5-19
5.5 Vibration (84KB PDF - includes section 5.5)
5-21
5.5.1 Ground Vibration Impact Assessment
5-21
5.5.2 Ground-Borne Noise Impact Assessment
5-22
5.5.3 Ground-Borne Vibration Mitigation
5-23
5.6 Visual and Aesthetic Resources (13.6MB PDF - includes section 5.6)
5-23
5.6.1 Methodology
5-23
5.6.2 Impact Assessment
5-23
5.6.3 Mitigation of Impacts to Visual and Aesthetic Resources
5-28
5.7 Ecosystems (106KB PDF - includes section 5.7)
5-29
5.7.1 Waters and Wetlands Impacts
5-29
5.7.2 Long-term Vegetation Impacts
5-35
5.7.3 Wildlife Impacts
5-36
5.7.4 Protected Species
5-36
5.7.5 Aquatic Habitat Impacts
5-37
5.8 Geology and Soils (49KB PDF - includes section 5.8)
5-37
5.9 Hydrology/Water Quality (93KB PDF - includes section 5.9)
5-38
5.9.1 Surface Water Quality
5-38
5.9.2 Groundwater Resources
5-39
5.9.3 Floodplains
5-40
5.10 Hazardous/Regulated Materials (726KB PDF - includes section 5.10)
5-43
5.10.1 ESA Report Summary
5-43
5.10.2 Hazardous/Regulated Materials Mitigation
5-44
5.11 Safety and Security (72KB PDF - includes section 5.11)
5-50
5.11.1 No-Build Alternative
5-50
5.11.2 LRT Alternative
5-50
5.12 Construction Impacts (126KB PDF - includes section 5.12)
5-53
5.12.1 Construction Scenario
5-53
5.12.2 Construction Noise Impacts
5-56
5.12.3 Construction Vibration Impacts
5-58
5.12.4 Disruption of Utilities
5-58
5.12.5 Access and Distribution of Traffic
5-59
5.12.6 Air Quality Impacts
5-61
5.12.7 Disruption of Business/Academic Activities
5-61
5.12.8 Water Quality Runoff
5-62
5.12.9 Excavations, Fill Materials, Debris and Spoil
5-63
5.13 Cultural Resources (57KB PDF - includes section 5.13)
5-63
5.13.1 Application of the Criteria of Adverse Effect
5-63
5.13.2 Mitigation Measures
5-64
5.13.3 Formal Finding as to whether Historic Properties may be Affected
5-64
5.13.4 Finding of Effect
5-64
5.13.5 Determination of Adverse Effect
5-64
5.14 Archeological Resources (50KB PDF - includes section 5.14)
5-65
5.14.1 Formal Finding as to Whether Historic Properties May be Affected
5-65
5.14.2 Finding of Effect
5-65
5.14.3 Determination of Adverse Effect
5-65
5.14.4 Mitigation Measures
5-65
5.15 Parklands (65KB PDF - includes section 5.15)
5-65
5.15.1 Evaluation Criteria
5-66
5.15.2 Impact Methodology
5-66
5.15.3 Direct Impacts
5-66
5.15.4 Indirect Impacts
5-67
5.15.5 Parkland Mitigation
5-67
5.16 Environmental Justice (827KB PDF - includes section 5.16)
5-67
5.16.1 Overview
5-67
5.16.2 Public Participation
5-67
5.16.3 Impact Assessment Methodology
5-70
5.16.4 Impact Assessment
5-71
5.16.5 Mitigation
5-73
5.17 Impacts to Airport Property (80KB PDF - includes section 5.17)
5-73
5.17.1 Mitigation
5-75
5.18 List of Required Federal Permits (51KB PDF - includes section 5.18)
5-76
5.19 Relationship Between Short-Term Uses of the Environment and Long-Term Productivity (59KB PDF - includes section 5.19)
5-76
5.20 Irreversible or Irretrievable Commitment of Resources (51KB PDF - includes section 5.20)
5-77
5.21 Cumulative Effects (111KB PDF - includes section 5.21)
5-77
5.21.1 Transportation
5-79
5.21.2 Land Use and Economics
5-81
5.21.3 Acquisitions and Displacement
5-81
5.21.4 Air Quality
5-82
5.21.5 Noise and Vibration
5-82
5.21.6 Visual and Aesthetic Resources
5-82
5.21.7 Ecosystems
5-83
5.21.8 Geology
5-83
5.21.9 Hydrology/Water Quality
5-83
5.21.10 Hazardous/Regulated Materials
5-83
5.21.11 Safety and Security
5-84
5.21.12 Historical and Archeological Resources
5-84
5.21.13 Public Parks and Recreation Areas
5-84
5.21.14 Section 4(f) and Section 6(f) Impacts
5-84
5.21.15 Impacts to Airport Property
5-85
5.21.16 Summary
5-85
6.0 SECTION 4(f) AND SECTION 6(f) EVALUATION (8.0MB PDF - includes sections 6.1 through 6.7) 6-1
6.1 Application of Section 4(f) (57KB PDF - includes section 6.1)
6-1
6.2 Public Parks and Recreation Areas (1.3MB PDF - includes section 6.2)
6-2
6.3 Impacts to Public Parks and Recreational Areas (106KB PDF - includes section 6.3)
6-4
6.3.1 Direct Use
6-4
6.3.2 Temporary Use
6-6
6.3.3 Constructive Use
6-7
6.3.4 Avoidance Alternatives
6-8
6.3.5 Measures to Minimize Harm
6-10
6.3.6 Coordination Consultation
6-11
6.3.7 Recommended Determination Findings for Public Parks and Recreational Areas
6-12
6.4 Historic Sites (41KB PDF - includes section 6.4)
6-12
6.5 Land and Water Conservation Fund Act Section 6(f)(3) Considerations (69KB PDF - includes section 6.5)
6-12
6.5.1 Land and Water Conservation Fund-Assisted Property in Trinity River Greenbelt
6-13
6.5.2 Effects on Land and Water Conservation Fund Assisted Property
6-13
6.5.3 Section 6(f)(3) Conversion Requirements
6-13
6.6 Texas Parks and Wildlife Code, Chapter 26 (37KB PDF - includes section 6.6)
6-16
6.7 Section 4(f) and 6(f) Correspondence (6.7MB PDF - includes section 6.7)
6-16
7.0 PUBLIC AND AGENCY INVOLVEMENT (2.7MB PDF - includes sections 7.1 through 7.5) 7-1
7.1 Public Involvement Plan (91KB PDF - includes section 7.1)
7-1
7.1.1 Summary of Public and Agency Participation
7-2
7.2 Agency Coordination (58KB PDF - includes section 7.2)
7-6
7.3 Public and Agency Involvement and the Draft EIS (51KB PDF - includes section 7.3)
7-7
7.4 Organization of the Comments and Responses Received (186KB PDF - includes section 7.4)
7-7
7.4.1 Summary of Comments
7-8
7.4.2 List of Comments and Responses
7-8
7.5 Public Meetings and Hearing Notification (2.5MB PDF - includes section 7.5)
7-25
BIBLIOGRAPHY (44KB PDF)
APPENDICES
Appendix A   List of Recipients (56KB PDF)
Appendix B   List of Preparers (82KB PDF)
Appendix C   Plan and Profile Drawings (20.3MB PDF)
Appendix D   Letters of Coordination (26.0MB PDF)
Appendix E   FAA Math Modeling Study (7.1MB PDF)

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