Chapter Two - History and Background 2.1 1998 Site Selection and Master Plan Study ...... 2-1 2.2 2001 Environmental Assessment ROD/FONSI ...... 2-1 2.3 Petition for Review of FAA’s ROD/FONSI ...... 2-2 2.4 FAA Action Since Court Decision ...... 2-3 2.5 Purpose of This Draft Environmental Impact Statement ...... 2-3

Chapter Three - Purpose And Need For The Proposed Replacement Airport 3.1 Purpose of the Proposed Replacement Airport...... 3-1 3.2 Need for the Proposed Replacement Airport ...... 3-3

Chapter Four – Alternatives 4.1 Introduction ...... 4-1 4.2 Alternatives Considered in the Site Selection and Master Plan Study ...... 4-1 4.3 Additional Alternatives Considered in the 2001 Environmental Assessment...... 4-2 4.4 Additional Alternatives Not Considered In 2001 Environmental Assessment...... 4-8 4.5 Alternatives Retained for Detailed Study in the Environmental Impact Statement ...... 4-14

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PAGE Chapter Five - Affected Environment 5.1 Study Areas ...... 5-1 5.2 Climate and Topography ...... 5-4 5.3 Public Lands ...... 5-9 5.4 Biological and Natural Resources ...... 5-30h 5.5 Existing Land Use...... 5-40 5.6 Future Land Use Plans and Zoning ...... 5-41 5.7 Historic, Architectural, Archeological, and Cultural Resources...... 5-45 5.8 Socioeconomic Profile ...... 5-52 5.9 St. George Municipal Airport ...... 5-65 5.10 Area Airports ...... 5-72 5.11 Activity At Other Study Airports ...... 5-79 5.12 Other Air Traffic in Initial Area of Investigation ...... 5-86 5.13 Air Traffic Control Environment ...... 5-92 5.14 Airspace Structure...... 5-95 5.15 Published Air Routes and Procedures...... 5-97 5.16 Other Actions in Areas Potentially Affected by the Proposed Replacement Airport ...... 5-100

Chapter Six - Environmental Consequences 6.1 Introduction ...... 6-1 6.2 Airport Noise ...... 6-3 6.3 Land Use ...... 6-55 6.4 Air Quality...... 6-63 6.5 Historic, Architectural, Archaeological, and Cultural Resources ...... 6-89 6.6 Department of Transportation Act, Section 4(f)303(c) Properties and Resources ...... 6-93 6.7 Water Quality ...... 6-437 6.8 Impacts to Wetlands and Waters of the U.S...... 6-447 6.9 Floodplains and Floodways ...... 6-451 6.10 Wild and Scenic Rivers...... 6-453 6.11 Biological Resources, Threatened and Endangered Species...... 6-455 6.12 Farmlands...... 6-469 6.13 Natural Resources ...... 6-471 6.14 Hazardous Waste/Materials ...... 6-473 6.15 Solid Waste ...... 6-475 6.16 Construction Impacts ...... 6-477 6.17 Social and Socioeconomic Impacts...... 6-487 6.18 Secondary, Induced, and Infrastructure Impacts ...... 6-491 6.19 Surface Transportation...... 6-495 6.20 Environmental Justice ...... 6-503

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PAGE Chapter Six - Environmental Consequences, Continued 6.21 Energy Supply ...... 6-505 6.22 Sustainable Design and Development...... 6-507 6.23 Visual and Aesthetic Impacts ...... 6-509 6.24 Application Of Design, Art, and Architecture...... 6-515 6.25 Recognized Impact Categories Neither Applicable Nor Pertinent to the Proposed Replacement Airport ...... 6-517 6.26 Short-Term Uses and Long-Term Productivity of the Environment ...... 6-519 6.27 Irreversible and Irretrievable Commitments of Resources ...... 6-521 6.28 Summary of Environmental Impacts and Benefits Associated with the Proposed Replacement Airport ...... 6-523

Chapter Seven – Cumulative Impacts 7.1 Cumulative Aircraft Noise Effects ...... 7-1 7.2 Cumulative Aircraft Noise Exposure Analysis ...... 7-7 7.3 Cumulative Impacts of Roadway Noise ...... 7-109 7.4 Cumulative Impacts on Land Use...... 7-113 7.5 Cumulative Impacts on Air Quality...... 7-115 7.6 Cumulative Impacts on Historic, Architectural, Archaeological and Cultural Resources ...... 7-117 7.7 Cumulative Impacts on Water Quality ...... 7-119 7.8 Cumulative Impacts on Water Resources and Floodplains...... 7-121 7.9 Cumulative Impacts on Biological Resources and Threatened and Endangered Species ...... 7-123 7.10 Cumulative Impacts to Farmland ...... 7-125 7.11 Cumulative Social and Socioeconomic Impacts ...... 7-127 7.12 Cumulative Visual Impacts ...... 7-129

Chapter Eight – Department Of Transportation Act Section 4 (f)/303/ (c) Lands 8.1 Section 4(f)/303(c) Review...... 8-1 8.2 Basis for FAA Section 4(f)/303(c) Determination...... 8-2 8.3 Identification of Eligible Section (f)/303(c) Properties ...... 8-3 8.4 Noise Analysis of Section (f)/303(c) Properties ...... 8-8 8.5 Zion National Park Noise Effects Analysis ...... 8-10 8.6 Little Black Mountain Petroglyph Site Noise Effect Analysis ...... 8-15 8.7 Other Federal/State 4(f)/303(c) Sites – Noise Effect Analysis ...... 8-19

Chapter Nine – List Of Preparers And Document Distribution List 9.1 List of Preparers...... 9-1 9.2 Document Distribution List ...... 9-4 9.3 Scoping Commenter’s ...... 9-13

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PAGE

APPENDICES

Appendix A Principles of Aviation Noise Evaluation ...... A-1 Appendix B Supporting Information on Noise Analysis ...... B-1 Appendix C Air Tour Operator Survey Report ...... C-1 Appendix D Airport Redevelopment Plan October 2005 ...... D-1 Appendix E Aviation Activity Forecasts ...... E-1 Appendix F Cultural Resources...... F-1 Appendix G Biological Resources ...... G-1 Appendix H Air Quality Technical Data...... H-1 Appendix I Baseline Noise Monitoring Report Little Black Mountain Petroglyph Site...... I-1 Appendix J Water Rights Data ...... J-1 Appendix K Notice of Intent to Prepare an EIS and Scoping Comments ...... K-1 Appendix L Agency Coordination and Public Involvement...... L-1 Appendix M Coordination with Managing Agencies of Section 4(f)/303(c) Properties Located Within the Initial Area of Investigation ...... M-1 Appendix N Coordination with the National Park Service ...... N-1 Appendix O Tribal Coordination ...... O-1

Appendix P Coordination with the United States Army Corps of Engineers ...... P-1 Appendix Q Public Hearing Materials ...... Q-1 Appendix R Comments/Responses...... R-1 Appendix S St. George Replacement Airport EIS Noise Levels for 2003 Conditions Zion National Park and Other 4(f)/303(c) Sites ...... S-1 Appendix T Audibility Evaluations for Zion National Park ...... T-1 Appendix U Sensitivity Analysis to Compare 15-hour Daytime and 24-Hour Sound Levels at Zion National Park ...... U-1 Appendix V Use of Integrated Noise Model Version 6.1 and 6.2 in EIS...... V-1 Appendix W Issues Relating to Mitigation of Aircraft Noise Impacts on Zion National Park ...... W-1 Appendix X Monitored Noise Abatement Initiatives...... X-1 Appendix Y Memorandum of Agreement between Federal Aviation Administration and National Park Service...... Y-1

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LIST OF TABLES PAGE Chapter Three Table 3.1 Needs for Proposed Replacement Airport ...... 3-2 Table 3.2 Types of Aircraft Permitted to Serve Each Class of Certified Airport ...... 3-6 Table 3.3 Aviation Activity and Forecasts, 2003-2020...... 3-8 Table 3.4 Aircraft Types Forecast to Operate at St. George in the Future ...... 3-11 Table 3.5 Existing Airport Dimensional Standards for ARC B-II Aircraft Types ...... 3-12 Table 3.6 Dimensional Standards for ARC D-III Aircraft Types ...... 3-13 Table 3.7 Runway Takeoff Length Requirements ...... 3-16 Table 3.8 Existing Runway 16/34 Wind Coverage...... 3-18

Chapter Four Table 4.1 Alternatives Considered in the 2001 Environmental Assessment...... 4-3 Table 4.2 Public Use Airports Within a 30 Nautical Mile Radius of St. George...... 4-9 Table 4.3 Driving Time Between St. George and Nearest Air Carrier Airports ...... 4-9 Table 4.4 Top Ten United States Destinations Airports from St. George Municipal Airport – Calendar Year 2004 ...... 4-12

Chapter Five Table 5.1 Soil Types in Proposed Replacement Airport Study Area...... 5-7 Table 5.2 Public Lands in Initial Area of Investigation ...... 5-10 Table 5.3 Wilderness Study Areas and Instant Study Areas in the Initial Area of Investigation ...... 5-30g Table 5.4 Special Status Species Potentially Occurring Within the Proposed Replacement Airport Study Area...... 5-33 Table 5.5 Classification of Zoning Districts Into Generalized Categories ...... 5-43 Table 5.6 Population Comparisons for Initial Area of Investigation 1980-2000 ...... 5-53 Table 5.7 Racial Characteristics ...... 5-56 Table 5.8 Minority Populations ...... 5-60 Table 5.9 Households for Which Poverty Status is Determined ...... 5-63 Table 5.10 Largest Employers in Washington County, Utah, By Sector, 2003 ...... 5-64 Table 5.11 Historic and Forecast Enplanements – Existing and Proposed Replacement Airports ...... 5-66

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PAGE Chapter Five Table 5.12 Aircraft Operations Forecast – Existing and Proposed Replacement Airports...... 5-67 Table 5.13 Aircraft Fleet Mix for Existing Airport – 2003 ...... 5-69 Table 5.14 Aircraft Fleet Mix Forecasts for Existing and Proposed Replacement Airports...... 5-70 Table 5.15 Annual and Daily Operations at Nellis Air Force Base ...... 5-77 Table 5.16 Enplanements and Operations at Other Study Area Airports ...... 5-79 Table 5.17 Itinerant and Local Annual Operations at Other Study Area Airports ...... 5-80 Table 5.18 Fleet Mix Percentages at Other Study Area Airports...... 5-81 Table 5.19 Air Traffic Summary...... 5-82 Table 5.20 Existing and Projected IFR Overflight Traffic Through Initial Area of Investigation ...... 5-86 Table 5.21 Estimated and Forecast Number of Air Tours Over Zion National Park and Cedar Breaks National Monument ...... 5-88 Table 5.22 Air Tour Operators – Zion National Park and Cedar Breaks National Monument ...... 5-90 Table 5.23 Annual Activity on Military Training Routes...... 5-92 Table 5.24 Airports with Right Traffic Patterns...... 5-98 Table 5.25 Military Training Routes in Initial Area of Investigation...... 5-101 Table 5.26 Proposed Future Airport Development in Region ...... 5-103

Chapter Six Table 6.1 Average Day and Annual Operations – 2003 Current ...... 6-7 Table 6.2 Day/Night Traffic Distribution – 2003 Conditions ...... 6-7 Table 6.3 Flight Track Summary – Existing Airport ...... 6-9 Table 6.4 Area of Noise Exposure in Acres – Existing St. George Airport 2003 ...... 6-10 Table 6.5 Existing and Forecast Annual Operations – No-Action Conditions ...... 6-11 Table 6.6 Existing and Forecast Annual Operations – Proposed Replacement Airport Conditions...... 6-12 Table 6.7 Day/Night Traffic Distribution – Proposed Project ...... 6-12 Table 6.8 Noise Exposure in Acres and Number of Dwellings and Population – Existing and Proposed Replacement Airport 2010...... 6-14 Table 6.9 Noise Exposure in Acres, Number of Dwellings and Population - Existing and Proposed Replacement Airport 2020 ...... 6-17 Table 6.10 National Ambient Air Quality Standards (NAAQS) ...... 6-65 Table 6.11 Annual Aircraft Landing and Takeoff Cycles ...... 6-71 Table 6.12 Times-In-Mode by Aircraft Category...... 6-72 Table 6.13 Times-In-Mode for Total Idle/Taxi/Departure Queue...... 6-72

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PAGE Chapter Six, continued Table 6.14 Ground Service Equipment (GSE) Assignments...... 6-73 Table 6.15 Fuel Storage Capacity ...... 6-75 Table 6.16 Parking Lot Vehicle Counts ...... 6-75 Table 6.17 Roadway Traffic Volumes...... 6-76 Table 6.18 Annual Fuel Throughputs for Boilers...... 6-77 Table 6.19 Construction Emissions Inventory ...... 6-81 Table 6.20 Emissions Inventory Results: Existing Conditions 2003 ...... 6-82 Table 6.21 Emissions Inventory Results: 2010 No-Action and Proposed Replacement Airport ...... 6-83 Table 6.22 Emissions Inventory Results: 2020 No-Action and Proposed Replacement Airport ...... 6-84 Table 6.23 Emissions Impact Evaluation...... 6-86

Table 6.24 Measured L50 (Existing) And L50 (Natural) Ambient Levels in Zion National Park and Ambient Map Values ...... 6-102 Table 6.24A 2003 Noise Levels in Zion National Park DNL, Leq(24), Leq(day) (Existing Ambient)...... 6-107

Table 6.24B 2003 Noise Levels in Zion National Park DNL, Leq(24), Leq(day) (Natural Ambient) ...... 6-108 Table 6.25 Zion Park Noise Level Changes – Cumulative DNL (Existing Ambient) – 2010/2020...... 6-109

Table 6.26 Zion National Park Noise Level Changes – Cumulative Leq(24) (Natural Ambient) – 2010/2020 ...... 6-111

Table 6.27 Zion National Park Noise Level Changes – Cumulative Leq(day) (Natural Ambient) – 2010/2020 ...... 6-113 Table 6.28 Zion National Park Noise Level Changes – Cumulative Time Above Ambient (Existing) 2010/2020 ...... 6-115 Table 6.29 Zion National Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-117 Table 6.30 Zion National Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-117 Table 6.31 Ashdown George Wilderness Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-135 Table 6.32 Ashdown George Wilderness Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-135 Table 6.33 Ashdown George Wilderness Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-136 Table 6.34 Ashdown George Wilderness Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-136 Table 6.35 Ashdown George Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-137 Table 6.36 Ashdown George Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-137

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PAGE Chapter Six, continued Table 6.37 Beartrap Canyon WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-141 Table 6.38 Beartrap Canyon WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-141 Table 6.39 Beartrap Canyon WSA Noise Level Changes – Cumulative Leq(day) –2010/2020 ...... 6-142 Table 6.40 Beartrap Canyon WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-142 Table 6.41 Beartrap Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-143 Table 6.42 Beartrap Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-143 Table 6.43 Beaver Dam Mountain Wilderness Noise Level Changes Cumulative DNL – 2010/2020 ...... 6-147 Table 6.44 Beaver Dam Mountain Wilderness Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-147 Table 6.45 Beaver Dam Mountain Wilderness Noise Level Changes – Cumulative Leq (day) – 2010/2020 ...... 6-148 Table 6.46 Beaver Dam Mountain Wilderness Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-148 Table 6.47 Beaver Dam Mountain Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-149 Table 6.48 Beaver Dam Mountain Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-149 Table 6.49 Beaver Dam State Park Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-153 Table 6.50 Beaver Dam State Park Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-153 Table 6.51 Beaver Dam State Park Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-154 Table 6.52 Beaver Dam State Park Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-154 Table 6.53 Beaver Dam State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-155 Table 6.54 Beaver Dam State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-155 Table 6.55 Canaan Mountain Wilderness Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-159 Table 6.56 Canaan Mountain Wilderness Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-159 Table 6.57 Canaan Mountain Wilderness Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-160

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PAGE Chapter Six, continued Table 6.58 Canaan Mountain Wilderness Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-160 Table 6.59 Canaan Mountain Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-161 Table 6.60 Canaan Mountain Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-161 Table 6.61 Cedar Breaks National Monument Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-165 Table 6.62 Cedar Breaks National Monument Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-165 Table 6.63 Cedar Breaks National Monument Noise Level Changes – Cumulative Leq (day) – 2010/2020 ...... 6-166 Table 6.64 Cedar Breaks National Monument Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-166 Table 6.65 Cedar Breaks National Monument Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-167 Table 6.66 Cedar Breaks National Monument Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-167 Table 6.67 Cedar City Paiute Indian Reservation Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-171 Table 6.68 Cedar City Paiute Indian Reservation Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-171 Table 6.69 Cedar City Paiute Indian Reservation Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-172 Table 6.70 Cedar City Paiute Indian Reservation Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-172 Table 6.71 Cedar City Paiute Indian Reservation Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-173 Table 6.72 Cedar City Paiute Indian Reservation Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-173 Table 6.73 Clover Mountain Wilderness Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-177 Table 6.74 Clover Mountain Wilderness Noise Level Changes – Cumulative Leq(24) –2010/2020 ...... 6-177 Table 6.75 Clover Mountain Wilderness Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-178 Table 6.76 Clover Mountain Wilderness Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-178 Table 6.77 Clover Mountain Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-179

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PAGE Chapter Six, continued Table 6.78 Clover Mountain Wilderness Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-179 Table 6.79 Coral Pink Sand Dunes State Park Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-183 Table 6.80 Coral Pink Sand Dunes State Park Noise Level Changes – Cumulative Leq(24) - 2010/2020...... 6-183 Table 6.81 Coral Pink Sand Dunes State Park Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-184 Table 6.82 Coral Pink Sand Dunes State Park Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-184 Table 6.83 Coral Pink Sand Dunes State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-185 Table 6.84 Coral Pink Sand Dunes State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-185 Table 6.85 Cottonwood Point WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-189 Table 6.86 Cottonwood Point WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-189 Table 6.87 Cottonwood Point WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-190 Table 6.88 Cottonwood Point WSA Cottonwood Point WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020...... 6-190 Table 6.89 Cottonwood Point WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-191 Table 6.90 Cottonwood WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-191 Table 6.91 Cottonwood WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-195

Table 6.92 Cottonwood WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-195

Table 6.93 Cottonwood WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-196 Table 6.94 Cottonwood WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-196 Table 6.95 Cottonwood WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-197 Table 6.96 Cottonwood WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-197 Table 6.97 Cougar Canyon WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-201 Table 6.98 Cougar Canyon WSA Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-201

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PAGE Chapter Six, continued Table 6.99 Cougar Canyon WSA Noise Level Changes – Cumulative Leq (day) – 2010/2020...... 6-202 Table 6.100 Cougar Canyon WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-202 Table 6.101 Cougar Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-203 Table 6.102 Cougar Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-203 Table 6.103 Deep Creek WSA Noise Level Changes – Cumulative DNL 2010/2020 ...... 6-207

Table 6.104 Deep Creek WSA Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-207

Table 6.105 Deep Creek WSA Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-208 Table 6.106 Deep Creek WSA Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-208 Table 6.107 Deep Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-209 Table 6.108 Deep Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-209 Table 6.109 Gateway Corridor 22 Noise Level Changes – Cumulative DNL 2010/2020 ...... 6-213

Table 6.110 Gateway Corridor 22Noise Level Changes – Cumulative Leq(24 2010/2020 ...... 6-213

Table 6.111 Gateway Corridor 22Noise Level Changes – Cumulative Leq(day 2010/2020 ...... 6-214 Table 6.112 Gateway Corridor 22Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-214 Table 6.113 Gateway Corridor 22Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-215 Table 6.114 Gateway Corridor 22Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-215 Table 6.115 Gateway Corridor 23 Noise Level Changes – Cumulative DNL 2010/2020 ...... 6-219

Table 6.116 Gateway Corridor 23Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-219

Table 6.117 Gateway Corridor 23Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-220 Table 6.118 Gateway Corridor 23Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-220 Table 6.119 Gateway Corridor 23Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-221

Table 6.122 Gateway Corridor 24Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-225

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PAGE Chapter Six, continued Table 6.120 Gateway Corridor 23Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-221 Table 6.121 Gateway Corridor 24 Noise Level Changes – Cumulative DNL 2010/2020 ...... 6-225

Table 6.123 Gateway Corridor 24Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-226 Table 6.124 Gateway Corridor 24Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-226 Table 6.125 Gateway Corridor 24Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-227 Table 6.126 Gateway Corridor 24 Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-227 Table 6.127 Gateway Corridor 32 Noise Level Changes – Cumulative DNL 2010/2020 ...... 6-231 Table 6.128 Gateway Corridor 32 Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-231 Table 6.129 Gateway Corridor 32 Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-232 Table 6.130 Gateway Corridor 32 Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-232 Table 6.131 Gateway Corridor 32 Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-233 Table 6.132 Gateway Corridor 32 Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-233 Table 6.133 Gateway Corridor 33 Noise Level Changes – Cumulative DNL – 2010/2020...... 6-237 Table 6.134 Gateway Corridor 33 Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-237 Table 6.135 Gateway Corridor 33 Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-238 Table 6.136 Gateway Corridor 33 Noise Level Changes – Cumulative TAA 29 – 2010/2020...... 6-238 Table 6.137 Gateway Corridor 33 Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-239 Table 6.138 Gateway Corridor 33Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-239 Table 6.139 Goose Creek Canyon WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-243 Table 6.140 Goose Creek Canyon WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-243

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PAGE Chapter Six, continued Table 6.141 Goose Creek Canyon WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-244 Table 6.142 Goose Creek Canyon WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-244 Table 6.143 Goose Creek Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-245 Table 6.144 Goose Creek Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-245 Table 6.145 Grand Canyon-Parashant Monument Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-249 Table 6.146 Grand Canyon-Parashant Monument Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-250 Table 6.147 Grand Canyon-Parashant Monument Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-251 Table 6.148 Grand Canyon-Parashant Monument Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-252 Table 6.149 Grand Canyon-Parashant Monument Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-253 Table 6.150 Grand Canyon-Parashant Monument Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-254 Table 6.151 Grand Canyon-Parashant Monument (Property 2) Noise Level Changes – Cumulative DNL – 2010/2020...... 6-257 Table 6.152 Grand Canyon-Parashant Monument (Property 2) Noise Level Changes – Cumulative Leq(24) – 2010/2020...... 6-257 Table 6.153 Grand Canyon-Parashant Monument (Property 2) Noise Level Changes – Cumulative Leq(day) – 2010/2020...... 6-258 Table 6.154 Grand Canyon-Parashant Monument (Property 2) Noise Level Changes – Cumulative TAA 29 – 2010/2020...... 6-258 Table 6.155 Grand Canyon-Parashant Monument (Property 2) Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-259 Table 6.156 Grand Canyon-Parashant Monument (Property 2) Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-259 Table 6.157 Grand Wash Cliffs WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-263 Table 6.158 Grand Wash Cliffs WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-263 Table 6.159 Grand Wash Cliffs WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-264 Table 6.160 Grand Wash Cliffs WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-264

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PAGE Chapter Six, continued Table 6.161 Grand Wash Cliffs WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-265 Table 6.162 Grand Wash Cliffs WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-265 Table 6.163 Gunlock State Park Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-269 Table 6.164 Gunlock State Park Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-269 Table 6.165 Gunlock State Park Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-270 Table 6.166 Gunlock State Park Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-270 Table 6.167 Gunlock State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-271 Table 6.168 Gunlock State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-271 Table 6.169 Iron Mission State Park Museum Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-275 Table 6.170 Iron Mission State Park Museum Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-275 Table 6.171 Iron Mission State Park Museum Noise Level Changes – Cumulative Leq (day) – 2010/2020 ...... 6-276 Table 6.172 Iron Mission State Park Museum Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-276 Table 6.173 Iron Mission State Park Museum Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-277 Table 6.174 Iron Mission State Park Museum Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-277 Table 6.175 Joshua Tree Instant Study Area Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-281 Table 6.176 Joshua Tree Instant Study Area Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-281 Table 6.177 Joshua Tree Instant Study Area Noise Level Changes – Cumulative Leq (day) – 2010/2020 ...... 6-282 Table 6.178 Joshua Tree Instant Study Area Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-282 Table 6.179 Joshua Tree Instant Study Area Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-283 Table 6.180 Joshua Tree Instant Study Area Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-283 Table 6.181 Kaibab Indian Reservation Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-287 Table 6.182 Kaibab Indian Reservation Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-287

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Landrum & Brown Table of Contents May 2006 Page xiv ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.183 Kaibab Indian Reservation Noise Level Changes – Cumulative Leq (day) – 2010/2020 ...... 6-288 Table 6.184 Kaibab Indian Reservation Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-288 Table 6.185 Kaibab Indian Reservation Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-289 Table 6.186 Kaibab Indian Reservation Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-289 Table 6.187 Kaibab National Forest Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-293 Table 6.188 Kaibab National Forest Noise Level Changes – Cumulative Leq (24) – 2010/2020 ...... 6-293 Table 6.189 Kaibab National Forest Noise Level Changes – Cumulative Leq (day) – 2010/2020 ...... 6-294 Table 6.190 Kaibab National Forest Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-294 Table 6.191 Kaibab National Forest Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-295 Table 6.192 Kaibab National Forest Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-295 Table 6.193 Kanab Creek Wilderness Area Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-299

Table 6.194 Kanab Creek WSA Noise Level Changes – Cumulative Leq (24) 2010/2020 ...... 6-299

Table 6.195 Kanab Creek WSA Noise Level Changes – Cumulative Leq (day) 2010/2020 ...... 6-300 Table 6.196 Kanab Creek WSA Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-300 Table 6.197 Kanab Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-301 Table 6.198 Kanab Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-301 Table 6.199 La Verkin Creek WSA Noise Level Changes Cumulative DNL – 2010/2020 ...... 6-305 Table 6.200 La Verkin Creek WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-305 Table 6.201 La Verkin Creek WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-306 Table 6.202 La Verkin Creek WSA Noise Level Changes- Cumulative TAA-29 2010/2020 ...... 6-306 Table 6.203 La Verkin Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-307

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Landrum & Brown Table of Contents May 2006 Page xv ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.204 La Verkin Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-307 Table 6.205 Lake Mead National Recreation Area Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-311 Table 6.206 Lake Mead National Recreation Area Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-311 Table 6.207 Lake Mead National Recreation Area Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-312 Table 6.208 Lake Mead National Recreation Area Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-312 Table 6.209 Lake Mead National Recreation Area Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-313 Table 6.210 Lake Mead National Recreation Area Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-313 Table 6.211 Lime Canyon WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-317

Table 6.212 Lime Canyon WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-317

Table 6.213 Lime Canyon WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-318 Table 6.214 Lime Canyon WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-318 Table 6.215 Lime Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-319 Table 6.216 Lime Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-319 Table 6.217 Moquith Mountain WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-324 Table 6.218 Moquith Mountain WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-324 Table 6.219 Moquith Mountain WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-325 Table 6.220 Moquith Mountain WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-325 Table 6.221 Moquith Mountain WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-326 Table 6.222 Moquith Mountain WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-326 Table 6.223 Mormon Mountains WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-329

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Landrum & Brown Table of Contents May 2006 Page xvi ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.224 Mormon Mountains WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-329 Table 6.225 Mormon Mountains WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-330 Table 6.226 Mormon Mountains WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-330 Table 6.227 Mormon Mountains WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-331 Table 6.228 Mormon Mountains WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-331 Table 6.229 Mount Trumbull WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-335 Table 6.230 Mount Trumbull WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-335 Table 6.231 Mount Trumbull WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-336 Table 6.232 Mount Trumbull WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-336 Table 6.233 Mount Trumbull WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-337 Table 6.234 Mount Trumbull WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-337 Table 6.235 North Fork Virgin River WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-341 Table 6.236 North Fork Virgin River WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-341 Table 6.237 North Fork Virgin River WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-342 Table 6.238 North Fork Virgin River WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-342 Table 6.239 North Fork Virgin River WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-343 Table 6.240 North Fork Virgin River WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-343 Table 6.241 Orderville Canyon WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-347 Table 6.242 Orderville Canyon WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-347 Table 6.243 Orderville Canyon WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-348 Table 6.244 Orderville Canyon WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-348

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Landrum & Brown Table of Contents May 2006 Page xvii ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.245 Orderville Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-349 Table 6.246 Orderville Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-349 Table 6.247 Paiute WSA Noise Level Changes – Cumulative DNL 2010/2020 ...... 6-353

Table 6.248 Paiute WSA Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-353

Table 6.249 Paiute WSA Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-354 Table 6.250 Paiute WSA Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-354 Table 6.251 Paiute WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-355 Table 6.252 Paiute WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-355 Table 6.253 Parunuweap WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-359 Table 6.254 Parunuweap WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-359 Table 6.255 Parunuweap WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-360 Table 6.256 Parunuweap WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-360 Table 6.257 Parunuweap WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-361 Table 6.258 Parunuweap WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-361 Table 6.259 Pine Valley Mountain WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-365 Table 6.260 Pine Valley Mountain WSA Noise Level Changes – Cumulative Leq(24) –2010/2020 ...... 6-365 Table 6.261 Pine Valley Mountain WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-366 Table 6.262 Pine Valley Mountain WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-362 Table 6.263 Pine Valley Mountain WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-367 Table 6.264 Pine Valley Mountain WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-367 Table 6.265 Pipe Springs National Monument Noise Level Changes – Cumulative DNL – 2010/2020...... 6-371 Table 6.266 Pipe Springs National Monument Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-371

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Landrum & Brown Table of Contents May 2006 Page xviii ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.267 Pipe Springs National Monument Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-372 Table 6.268 Pipe Springs National Monument Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-372 Table 6.269 Pipe Springs National Monument Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-373 Table 6.270 Pipe Springs National Monument Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-373 Table 6.271 Quail Creek State Park Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-377 Table 6.272 Quail Creek State Park Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-377 Table 6.273 Quail Creek State Park Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-378 Table 6.274 Quail Creek State Park Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-378 Table 6.275 Quail Creek State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-379 Table 6.276 Quail Creek State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-379 Table 6.277 Red Butte WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-383

Table 6.278 Red Butte WSA Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-383

Table 6.279 Red Butte WSA Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-384 Table 6.280 Red Butte WSA Noise Level Changes – Cumulative TAA 29 2010/2020 ...... 6-384 Table 6.281 Red Butte WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-385 Table 6.282 Red Butte WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-385 Table 6.283 Red Mountain WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-389

Table 6.284 Red Mountain WSA Noise Level Changes – Cumulative Leq(24) 2010/2020 ...... 6-389

Table 6.285 Red Mountain WSA Noise Level Changes – Cumulative Leq(day) 2010/2020 ...... 6-390 Table 6.286 Red Mountain WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020...... 6-390

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Landrum & Brown Table of Contents May 2006 Page xix ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.287 Red Mountain WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010...... 6-391 Table 6.288 Red Mountain WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020...... 6-391 Table 6.289 Shivwits Paiute Indian Reservation Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-395 Table 6.290 Shivwits Paiute Indian Reservation Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-395 Table 6.291 Shivwits Paiute Indian Reservation Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-396 Table 6.292 Shivwits Paiute Indian Reservation Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-396 Table 6.293 Shivwits Paiute Indian Reservation Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-397 Table 6.294 Shivwits Paiute Indian Reservation Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-397 Table 6.295 Snow Canyon State Park Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-401 Table 6.296 Snow Canyon State Park Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-401 Table 6.297 Snow Canyon State Park Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-402 Table 6.298 Snow Canyon State Park Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-402 Table 6.299 Snow Canyon State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-403 Table 6.300 Snow Canyon State Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-403 Table 6.301 Spring Creek Canyon WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-407 Table 6.302 Spring Creek Canyon WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-407 Table 6.303 Spring Creek Canyon WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-407 Table 6.304 Spring Creek Canyon WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-407 Table 6.305 Spring Creek Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-409 Table 6.306 Spring Creek Canyon WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-409 Table 6.307 Taylor Creek WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-413

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Landrum & Brown Table of Contents May 2006 Page xx ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued

Table 6.308 Taylor Creek WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-413

Table 6.309 Taylor Creek WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-414 Table 6.310 Taylor Creek WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-414 Table 6.311 Taylor Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-415 Table 6.312 Taylor Creek WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-415 Table 6.313 Tunnel Spring WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-419 Table 6.314 Tunnel Spring WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-419 Table 6.315 Tunnel Spring WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-420 Table 6.316 Tunnel Spring WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-420 Table 6.317 Tunnel Spring WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-421 Table 6.318 Tunnel Spring WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-421 Table 6.319 Watchman WSA Noise Level Changes – Cumulative DNL – 2010/2020 ...... 6-425

Table 6.320 Watchman WSA Noise Level Changes – Cumulative Leq(24) – 2010/2020 ...... 6-425

Table 6.321 Watchman WSA Noise Level Changes – Cumulative Leq(day) – 2010/2020 ...... 6-426 Table 6.322 Watchman WSA Noise Level Changes – Cumulative TAA 29 – 2010/2020 ...... 6-426 Table 6.323 Watchman WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2010 ...... 6-427 Table 6.324 Watchman WSA Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 6-427 Table 6.325 Measured Ambient Noise Levels at Little Black Mountain Petroglyph Site ...... 6-433 Table 6.326 Airport Noise Metrics and Effects on Little Black Mountain Petroglyph Site – Existing and Proposed Replacement Airport 2010...... 6-434 Table 6.327 Airport Noise Metrics and Effects on Little Black Mountain Petroglyph Site – Existing and Proposed Replacement Airport 2020...... 6-435 Table 6.328 Water Quality Data – Virgin River and Fort Pearce Wash ...... 6-441

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Landrum & Brown Table of Contents May 2006 Page xxi ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Six, continued Table 6.329 Waters of the U.S./WASH Summary...... 6-448 Table 6.330 Typical Construction Equipment Noise Levels...... 6-483 Table 6.331 Economic Effects of Expenditures...... 6-492 Table 6.332 FHWA Noise Abatement Criteria – Hourly A-Weighted Sound Levels ...... 6-496a Table 6.333 Summary of Environmental Impacts and Benefits Associated with the Proposed Replacement Airport ...... 6-523 Table 6.334 Summary of Environmental Mitigation Associated with the Proposed Replacement Airport...... 6-526

Chapter Seven Table 7.1 Current and Forecast Overflight Operations ...... 7-7 Table 7.2 Current and Forecast Las Vegas Area Airport Operations ...... 7-8 Table 7.3 Current and Forecast Other Area Airport Daily Itinerant Operations...... 7-8 Table 7.4 Representative Underlying Aviation Noise Effects 2020 without Airport Contributions ...... 7-23 Table 7.5 Noise Level Summary at Zion National Park – Cumulative DNL 2010/2020...... 7-25 Table 7.6 Noise Level Summary at Zion National Park – Cumulative Leq(24) – 2010/2020...... 7-25 Table 7.7 Noise Level Summary at Zion National Park – Cumulative Leq(day) 2010/2020 ...... 7-25 Table 7.8 Noise Level Summary at Zion National Park – Cumulative Time Above Ambient – 2010-2020 ...... 7-35 Table 7.9 Noise Level Changes at Zion National Park – Number of Events Above LAmax Thresholds – 2010 ...... 7-35 Table 7.10 Zion National Park Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 ...... 7-36 Table 7.11 Noise Level Summary at Zion National Park – Cumulative L(max) and Number of Events Above LAmax Thresholds – 2010/2020...... 7-36 Table 7.11A Noise Level Changes in Zion National Park Cumulative Percent of Time Above Ambient (Natural) 2010/2020...... 7-73 Table 7.11B Proportions of Zion National Park Management Zones Exposed to Aviation Noise Above L50 Natural Ambient Levels...... 7-74 Table 7.12 Noise Level Summary at Other 4f/303(c) Properties - Cumulative DNL – 2010/2020 ...... 7-79

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Landrum & Brown Table of Contents May 2006 Page xxii ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Seven, continued Table 7.13 Noise Level Summary at Other 4f/303(c) Properties – Cumulative Leq(24) – 2010/2020...... 7-80 Table 7.14 Noise Level Summary at Other 4f/303(c) Properties – Cumulative Leq(day) – 2010/2020...... 7-81 Table 7.15 Noise Level Summary at Other 4f/303(c) Properties – Cumulative Time Above Ambient - 2010/2020 ...... 7-82 Table 7.16 Ashdown George WSA Noise Level Changes – Cumulative Number of Aircraft Events Above Thresholds – 2010 ...... 7-83 Table 7.17 Ashdown George WSA Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 ...... 7-83 Table 7.18 Beartrap Canyon WSA Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2010...... 7-83 Table 7.19 Beartrap Canyon WSA Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2020...... 7-83 Table 7.20 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2010 – Beaver Dam Mountain Wilderness ...... 7-83 Table 7.21 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2020 – Beaver Dam Mountain Wilderness ...... 7-84 Table 7.22 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2010 – Beaver Dam State Park ...... 7-84 Table 7.23 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2020 – Beaver Dam State Park ...... 7-84 Table 7.24 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Canaan Mountain WSA...... 7-84 Table 7.25 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Canaan Mountain WSA...... 7-85 Table 7.26 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Cedar Breaks National Monument ...... 7-85 Table 7.27 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Cedar Breaks National Monument ...... 7-85 Table 7.28 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Cedar City Paiute Indian Reservation7-85 Table 7.29 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Cedar City Paiute Indian Reservation7-86 Table 7.30 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Clover Mountain WSA ...... 7-86 Table 7.31 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Clover Mountain WSA ...... 7-86

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Landrum & Brown Table of Contents May 2006 Page xxiii ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Seven, continued Table 7.32 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Coral Pink Sand Dunes SP ...... 7-86 Table 7.33 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Coral Pink Sand Dunes SP ...... 7-86 Table 7.34 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Cottonwood Point Wilderness...... 7-87 Table 7.35 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Cottonwood Point Wilderness...... 7-87 Table 7.36 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Cottonwood WSA ...... 7-87 Table 7.37 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Cottonwood WSA ...... 7-87 Table 7.38 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Cougar Canyon WSA ...... 7-87 Table 7.39 Noise Level Changes – Cumulative Number of Aircraft Events – 2020 – Gateway Corridor 22 ...... 7-88 Table 7.40 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2010 – Deep Creek WSA ...... 7-88 Table 7.41 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2020 – Deep Creek WSA ...... 7-88 Table 7.42 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2010 – Gateway Corridor 22 ...... 7-88 Table 7.43 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds 2020 – Gateway Corridor 22 ...... 7-88 Table 7.44 Noise Level Changes –Number of Events Above LAmax Thresholds – 2010 – Gateway Corridor 23 ...... 7-89 Table 7.45 Noise Level Changes –Number of Events Above LAmax Thresholds – 2020 – Gateway Corridor 23 ...... 7-89 Table 7.46 Noise Level Changes –Number of Events Above LAmax Thresholds – 2010 – Gateway Corridor 24 ...... 7-89 Table 7.47 Noise Level Changes –Number of Events Above LAmax Thresholds – 2020 – Gateway Corridor 24 ...... 7-89 Table 7.48 Noise Level Changes –Number of Events Above LAmax Thresholds – 2010 – Gateway Corridor 32 ...... 7-90 Table 7.49 Noise Level Changes –Number of Events Above LAmax Thresholds – 2020 – Gateway Corridor 32 ...... 7-90 Table 7.50 Noise Level Changes –Number of Events Above LAmax Thresholds – 2010 – Gateway Corridor 33 ...... 7-90 Table 7.51 Noise Level Changes –Number of Events Above LAmax Thresholds – 2020 – Gateway Corridor 33 ...... 7-90

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Landrum & Brown Table of Contents May 2006 Page xxiv ST. GEORGE MUNICIPAL AIRPORT FINAL ENVIRONMENTAL IMPACT STATEMENT

PAGE Chapter Seven, continued Table 7.52 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Goose Creek WSA ...... 7-90 Table 7.53 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Goose Creek WSA ...... 7-90 Table 7.54 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Grand Canyon-Parachant NM (west) ...... 7-91 Table 7.55 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Grand Canyon-Parachant NM (west) ...... 7-92 Table 7.56 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Grand Canyon-Parachant NM...... 7-93 Table 7.57 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Grand Canyon-Parachant NM...... 7-93 Table 7.58 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Grand Wash Cliffs Wilderness ...... 7-93 Table 7.59 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Grand Wash Cliffs Wilderness ...... 7-93 Table 7.60 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Gunlock SP ...... 7-93 Table 7.61 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Gunlock SP ...... 7-94 Table 7.62 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Iron Mission State Park Museum ...... 7-94 Table 7.63 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Iron Mission State Park Museum ...... 7-94 Table 7.64 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – The Joshua Tree Instant Study Area ...... 7-94 Table 7.65 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – The Joshua Tree Instant Study Area ...... 7-94 Table 7.66 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Kaibab Indian Reservation...... 7-95

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PAGE Chapter Seven, continued Table 7.67 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Kaibab Indian Reservation...... 7-95 Table 7.68 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Kaibab National Forest...... 7-95 Table 7.69 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Kaibab National Forest ...... 7-95 Table 7.70 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Kanab Creek Wilderness ...... 7-96 Table 7.71 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Kanab Creek Wilderness ...... 7-96 Table 7.72 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Lake Mead National Recreation Area...... 7-96 Table 7.73 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Lake Mead National Recreation Area...... 7-96 Table 7.74 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – La Verkin Creek WSA...... 7-96 Table 7.75 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – La Verkin Creek WSA...... 7-97 Table 7.76 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Lime Canyon WSA...... 7-97 Table 7.77 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Lime Canyon WSA...... 7-97 Table 7.78 Noise Level Changes – Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Moquith Mountains WSA ...... 7-97 Table 7.79 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Moquith Mountains WSA ...... 7-97 Table 7.80 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Morman Mountains WSA ...... 7-98 Table 7.81 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Morman Mountains WSA ...... 7-98 Table 7.82 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Mount Trumbull Wilderness ...... 7-98 Table 7.83 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Mount Trumbull Wilderness ...... 7-98

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PAGE Chapter Seven, continued Table 7.84 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – North Fork Virgin River WSA...... 7-98 Table 7.85 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – North Fork Virgin River WSA...... 7-99 Table 7.86 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Orderville Canyon WSA...... 7-99 Table 7.87 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Orderville Canyon WSA...... 7-99 Table 7.88 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Paiute Wilderness...... 7-99 Table 7.89 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Paiute Wilderness...... 7-100 Table 7.90 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Parunuweap WSA...... 7-100 Table 7.91 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Parunuweap WSA...... 7-100 Table 7.92 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Pine Valley Mountain Wilderness ...... 7-100 Table 7.93 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Pine Valley Mountain Wilderness ...... 7-101 Table 7.94 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Pipe Spring National Monument ...... 7-101 Table 7.95 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Pipe Spring National Monument ...... 7-101 Table 7.96 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Quail Creek State Park...... 7-101 Table 7.97 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Quail Creek State Park...... 7-101 Table 7.98 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Red Butte WSA ...... 7-102 Table 7.99 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Red Butte WSA ...... 7-102 Table 7.100 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Red Mountain WSA...... 7-102

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PAGE Chapter Seven, continued Table 7.101 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Red Mountain WSA...... 7-102 Table 7.102 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Shivwits Paiute Indian Reservation ...... 7-103 Table 7.103 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Shivwits Paiute Indian Reservation ...... 7-103 Table 7.104 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Snow Canyon State Park...... 7-103 Table 7.105 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Snow Canyon State Park...... 7-103 Table 7.106 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Spring Creek Canyon WSA ...... 7-103 Table 7.107 Noise Level Changes –Cumulative Number of Aircraft Events A bove LAmax Thresholds – 2020 – Spring Creek Canyon WSA ...... 7-104 Table 7.108 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Taylor Creek WSA ...... 7-104 Table 7.109 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Taylor Creek WSA ...... 7-104 Table 7.110 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – Tunnel Spring WSA ...... 7-104 Table 7.111 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – Tunnel Spring WSA ...... 7-104 Table 7.112 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2010 – The Watchman WSA...... 7-104 Table 7.113 Noise Level Changes –Cumulative Number of Aircraft Events Above LAmax Thresholds – 2020 – The Watchman WSA...... 7-104 Table 7.114 Noise Level Summary at Other 4f/303(c) Properties – Cumulative L(max) and Number of Events Above LAmax Thresholds 2010 ...... 7-105 Table 7.115 Noise Level Summary at Other 4f/303(c) Properties – Cumulative L(max) and Number of Events Above LAmax Thresholds 2020 ...... 7-106 Table 7.116 Noise Level Summary at Little Black Mountain – Cumulative DNL – 2010/2020...... 7-107 Table 7.117 Noise Level Summary at Little Black Mountain – Cumulative Leq(24) - 2010/2020 ...... 7-107 Table 7.118 Noise Level Summary at Little Black Mountain – Cumulative Leq(day) - 2010/2020 ...... 7-107 Table 7.119 Noise Level Summary at Little Black Mountain – Cumulative Time Above Ambient (20 dBA) – 2010/2020 ...... 7-107

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PAGE Chapter Seven, continued Table 7.120 Noise Level Summary at Little Black Mountain – Cumulative L(max) and Number of Events Above LAmax Thresholds – 2010/2020 ...... 7-107 Table 7.121 Additive Factors for Summation of Two Sound Levels ...... 7-110

Chapter Eight Table 8.1 Zion National Park - Noise Effects ...... 8-11 Table 8.2 Little Black Mountain Petroglyph Site – Noise Effects ...... 8-16 Table 8.3 Beaver Dam Mountain Wilderness...... 8-20 Table 8.4 Cottonwood Point Wilderness ...... 8-21 Table 8.5 Paiute Wilderness...... 8-22 Table 8.6 Pine Valley Mountain Wilderness...... 8-23 Table 8.7 Canaan Mountain Wilderness Study Area ...... 8-24 Table 8.8 Cottonwood Wilderness Study Area...... 8-25 Table 8.9 Moquith Mountains Wilderness Study Area ...... 8-26 Table 8.10 Orderville Canyon Wilderness Study Area...... 8-27 Table 8.11 Quail Creek State Park and Reservoir ...... 8-28

Chapter Nine Table 9.1 List of Preparers...... 9-1 Table 9.2 Document Distribution List – Federal Agencies...... 9-5 Table 9.3 Scoping Commenters...... 9-12

Appendix A Table A.1 Yearly Day-Night Average Sound Level (DNL) in Decibels Land Use Compatibility Guidelines – FAR Part 150 ...... A-14

Appendix B Table B.1 Existing and Forecast Operations ...... B-4 Table B.2 Operations at Other Airports in the St. George Area ...... B-5 Table B.3 Existing and Forecast Overflights Over the Initial Area of Investigations ...... B-6 Table B.4 Existing and Replacement Airport Fleet Mix – 2003/2010/2020 ...... B-8 Table B.5 Overflight and Las Vegas Overflight Fleet Mix – 2003/2010 /2020 ...... B-8 Table B.6 Existing and Forecast ATO Fleet Mix – 2003/2010/2020 ...... B-11 Table B.7 Total Modeled Flight Tracks – Existing St. George Airport ...... B-27 Table B.8 Total Modeled Flight Tracks – Replacement St. George Airport ...... B-28

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PAGE Appendix B, continued Table B.9 Total Modeled Overflight Tracks...... B-28 Table B.10 Day/Night Distribution of Air Traffic at Existing and Replacement St. George Airport ...... B-54 Table B.11 Runway Utilization for Existing and Replacement St. George Airport ...... B-55 Table B.12 Measured Noise Levels in Little Black Mountain Petroglyph Site...... B-55 Table B.13 Acoustical Measurement Locations and Dates of NPS Measurements in Zion National Park ...... B-59 Table B.14 L50 (existing) and L50 (natural) Ambient Levels in Zion National Park 2000/2001 Measurements...... B-65 Table B.15 Area of Noise Exposure in Acres, Existing St. George Airport 2003 ...... B-68 Table B.16 Comparative Areas of Noise Exposure in Acres, Existing Airport – 2003 vs. 2010/2020 ...... B-72 Table B.17 Comparative Areas of Noise Exposure in Acres, Existing Versus Replacement Airport – 2010 and 2020 ...... B-77 Table B.18 Existing and Forecast Dwellings and Population Exposed to Noise ...... B-77 Table B.19 Changes of Time Above 65 dBA with Replacement Airport – 2003/2010/2020...... B-85 Table B.20 Changes of Numbers of Events Above 65 dBA with Replacement Airport – 2003/2010/2020...... B-91 Table B.21 Noise Level Changes at 4f/303(c) Properties – Cumulative DNL – 2010/2020...... B-175 Table B.22 Noise Level Changes at 4f/303(c) Properties – Cumulative Leq(24) – 2010/2020...... B-181 Table B.23 Noise Level Changes at 4f/303(c) Properties – Cumulative Leq(day) – 2010/2020 ...... B-195 Table B.24 Noise Level Changes at 4f/303(c) Properties – Cumulative Time Above Ambient 29 dBA - 2010/2020...... B-209 Table B.25 Noise Level Changes at 4f/303© Properties – Cumulative Number of Events Above LAmax Thresholds – 2010 ...... B-217 Table B.26 Noise Level Changes at 4f/303© Properties – Cumulative Number of Events Above LAmax Thresholds – 2020 ...... B-229 Table B.27 Noise Level Changes – Number of Events Above LAmax Thresholds – 2020 – Little Black Mountain ...... B-156 Table B.28 Representative Baseline Cumulative Noise Effects – 2020 Excludes SGU Operations ...... B-281 Table B.29 Cumulative DNL Levels at NPS Measurement Sites within Zion National Park, Existing and Proposed Replacement Airport ...... B-283

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PAGE Appendix B, continued Table B.30 Cumulative LEQ (24) Levels at NPS Measurement Sites within Zion National Park, Existing and Proposed Replacement Airport ...... B-284

Table B.31 Cumulative LEQ (day) Levels at NPS Measurement Sites within Zion National Park, Existing and Proposed Replacement Airport...... B-285

Table B.32 Minutes Above L50 (existing) at NPS Measurement Sites within Zion National Park – Existing and Proposed Replacement Airport...... B-286

Table B.33 Minutes Above L50 (natural) at NPS Measurement Sites within Zion National Park – Existing and Proposed Replacement Airport...... B-287 Table B.34 Cumulative Number of Events Above Selected Maximum Noise Levels at NPS Measurement Sites Within Zion National Park – Existing and Proposed Replacement Airport – 2010 ...... B-289 Table B.35 Cumulative Number of Events Above Selected Maximum Noise Levels at NPS Measurement Sites Within Zion National Park – Existing and Proposed Replacement Airport – 2020 ...... B-290 Table B.36 Noise Level Changes in Zion National Park – Cumulative DNL (Existing Ambient) 2010/2020 ...... B-293 Table B.37 Noise Level Changes in Zion National Park – Cumulative DNL (Natural Ambient) 2010/2020 ...... B-294

Table B.38 Noise Level Changes in Zion National Park – Cumulative Leq(24) 2010/2020 ...... B-295

Table B.40 Noise Level Changes in Zion National Park – Cumulative Leq(day) (Existing Ambient) 2010/2020 ...... B-297

Table B.39 Noise Level Changes in Zion National Park – Cumulative Leq(24) (Natural Ambient) 2010/2020 ...... B-296

Table B.41 Noise Level Changes in Zion National Park – Cumulative Leq day) (Natural Ambient) 2010/2020 ...... B-298 Table B.42 Noise Level Changes in Zion National Park – Cumulative Time Above Ambient (Existing) 2010/2020 ...... B-299 Table B.43 Noise Level Changes in Zion National Park – Cumulative Time Above Ambient (Natural) 2010/2020 ...... B-300 Table B.44 Noise Level Changes in Zion National Park – Cumulative Number of Events Above LAmax Thresholds 2010 ...... B-301 Table 4.45 Noise Level Changes in Zion National Park – Cumulative Number of Events Above LAmax Thresholds 2020 ...... B-303 Table B.46 Changes to Number of Events and Time Above 45 dBA in Zion National Park – 2010 ...... B-305 Table B.47 Changes to Number of Events and Time Above 45 dBA in Zion National Park – 2020 ...... B-306

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PAGE Appendix C Table C.1 Air Tour Operators Certificated For Operations Over Zion National Park, Bryce Canyon National Park, or Cedar Breaks National Monument ...... C-4 Table C.2 Air Tour Operator Data Collection Status...... C-7 Table C.3 Air Grand Canyon and Windrock Aviation ...... C-11 Table C.4 Air Vegas Airlines ...... C-12 Table C.5 Airstar Helicopters...... C-13 Table C.6 American Aviation ...... C-14 Table C.7 Bryce Canyon Airlines & Helicopters ...... C-15 Table C.8 Grand Canyon Airlines...... C-16 Table C.9 Heli USA Airlines ...... C-17 Table C.10 King Airlines ...... C-18 Table C.11 Las Vegas Helicopters ...... C-19 Table C.12 M&S Aero...... C-20 Table C.13 Maverick Helicopters...... C-21 Table C.14 McCarian Air (Formerly The Global Group) ...... C-22 Table C.15 Papillon Airways...... C-23 Table C.16 Scenic Airlines ...... C-24 Table C.17 Sundance Helicopters...... C-25

Appendix D Table D.1 List of Attachments...... D-1

Appendix E Table E.1 Revenue Enplanements Forecast ...... E-7 Table E.2 Commercial Passenger Operations Forecast...... E-9 Table E.3 Aircraft Operations Forecast – Existing Airport Scenario ...... E-11 Table E.4 Aircraft Operations Forecast – Proposed Replacement Airport Scenario ...... E-12 Table E.5 Fleet Mix Forecast – Existing Airport Scenario...... E-13 Table E.6 Fleet Mix Forecast – Proposed Replacement Airport Scenario ...... E-14

Appendix F Table F.1 Cultural Resources Investigations Documented With One Mile of the Survey Area ...... F-15 Table F.2 Previously Recorded Archaeological Sites Within the Vicinity of the Proposed Replacement Airport Site ...... F-19 Table F.3 Isolated Occurrences of Artifacts and Features...... F-22 Table F.4 Properties Listed on National Register of Historical Places Washington County, Utah ...... F-26

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Appendix G Table G.1 Vertebrate Species Observed in the Proposed Replacement Airport Study Area...... G-2 Table G.2 Common Plant Species Found in the Project Area...... G-4 Table G.3 Special Status Species Potentially Occurring in the Proposed Replacement Airport Study Area...... G-5 Table G.4 Summary of Potential Impacts to Special Status Species...... G-8

Appendix H Table H.1 List of Attachments...... H-1 Appendix I Table I.1 Measurement Dates and Locations...... I-7 Table I.2 Measurement Period Average Metrics ...... I-9 Table I.3 Daily Metrics...... I-9

Appendix J Table J.1 Existing Underground Wells – Proposed Replacement Airport Site...... J-2

Appendix K Table K.1 Scoping Comment Summary...... K-2

Appendix L Table L.1 List of Attachments...... L-1

Appendix M Table M.1 Mailing List for Initial Section 4(f)/303(C) Property – Coordination Letter, Dated August 4, 2004 and for Subsequent Coordination Letter, Dated March 18, 2005 ...... M-1

Appendix N Table N.1 List of Attachments...... N-1 Appendix O Table O.1 List of Attachments ...... O-1

Appendix P Table P.1 List of Attachments ...... P-1

Appendix R Table R.1 Comments Received on the Draft EIS Document ...... R-1

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Appendix S Table S.2003-1 2003 Noise Levels in Zion National Park, Time Above Existing and Natural Ambient Noise Levels...... S-3 Table S.2003-2 Number of Events Above LaMax Thresholds 2003 within Zion National Park ...... S-5

Table S.2003-3 2003 Noise Levels in 4(f)Sites DNL, Leq (24), Leq (day), (Existing Ambient) ...... S-7 Table S.2003-4 Time Above Ambient Noise Levels 2003 ...... S-17

Table S.2003-5 Number of Events Above LAmax Thresholds 2003 ...... S-29

Appendix T Table AUD-A INM Computed Minutes Audible Per Average Day 2003/2010/2020 (TAUD) Existing Ambient ...... T-33 Table AUD-B Percent Time Audible Per Average Day 2003/2010/2020 (%TAUD) Existing Ambient...... T-35 Table AUD-C Minutes Audible Per Average Day 2003/2010/2020 (TAUD) Natural Ambient ...... T-37 Table AUD-D Percent Time Audible Per Average Day 2003/2010/2020 (%TAUD) Natural Ambient ...... T-39

Appendix U Table A Average Hourly Overflights at Zion National Park Grid Points...... U-2 Table B Average Hourly Minutes Above Natural Ambient At Zion National Park Grid Points ...... U-2

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LIST OF EXHIBITS PAGE Executive Summary Exhibit ES.1 Topography Existing Airport Study Area ...... ES-11 Exhibit ES.2 Airport Facilities at Proposed Site (ALP)...... ES-12

Chapter One Exhibit 1.1 Location Map ...... 1-11 Exhibit 1.2 Airport Facilities at Proposed Site (ALP) ...... 1-13 Exhibit 1.3 Proposed Instrument Approach Procedure to Runway 19...... 1-15

Chapter Three Exhibit 3.1 Topography at Existing Airport Site (ALP) ...... 3-19

Chapter Four Exhibit 4.1 Alternative Replacement Considered in 2001 Environmental Assessment ...... 4-17 Exhibit 4.2 Proposed Alternative Sites 1, 1A, and 2 ...... 4-19 Exhibit 4.3 Preferred Site Schematic Airport Layout Plan...... 4-21 Exhibit 4.4 Land Ownership Surrounding the Proposed Replacement Airport ...... 4-23

Chapter Five Exhibit 5.1 Initial Area of Investigation...... 5-105 Exhibit 5.2 Topography – Existing Airport Study Area ...... 5-107 Exhibit 5.3 Topography – Proposed Replacement Airport Study Area ...... 5-109 Exhibit 5.4 Zion National Park ...... 5-111 Exhibit 5.5 Zion National Park Land Cover ...... 5-113 Exhibit 5.6 Potential Waters of the United States at Proposed Replacement Airport Site ...... 5-115 Exhibit 5.7 Floodplains at Proposed Replacement Airport Site ...... 5-117 Exhibit 5.8 Aerial View of St. George and Washington City Area ...... 5-119 Exhibit 5.9 Future Land Use Designations from Existing General Plans ...... 5-121 Exhibit 5.10 Generalized Existing Zoning...... 5-123 Exhibit 5.11 Cultural Resources Sites Near Proposed Replacement Airport Site ...... 5-125 Exhibit 5.12 Cultural Resources Sites...... 5-127 Exhibit 5.13 Cultural Resources Sites in Zion National Park ...... 5-129 Exhibit 5.14 Percent of Population That is Non-White ...... 5-131 Exhibit 5.15 Percent of Population That is Hispanic ...... 5-133 Exhibit 5.16 Percent of Households in Poverty...... 5-135 Exhibit 5.17 Other Airports in Initial Area of Investigation...... 5-122 Exhibit 5.18 U.S. General Division of Airspace...... 5-123

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PAGE Chapter Five, continued Exhibit 5.19 Las Vegas Class B Airspace (Terminal Area Chart)...... 5-124 Exhibit 5.20 Federal Airways ...... 5-125

Chapter Six Exhibit 6.1 Existing SGU South Flow Flight Track 2003/2010/2020 ...... 6-21 Exhibit 6.2 Existing SGU North Flow Flight Track 2003/2010/2020 ...... 6-23 Exhibit 6.3 Existing SGU Touch & Go/Training Flight Track 2003/2010/2020...... 6-25 Exhibit 6.4 Existing SGU DNL Noise Contours 2003 ...... 6-27 Exhibit 6.5 Replacement SGU South Flow Flight Track 2010/2020 ...... 6-29 Exhibit 6.6 Replacement SGU North Flow Flight Track 2010/2020...... 6-31 Exhibit 6.7 Replacement SGU Touch & Go/Training Flight Track 2010/2020 ...... 6-33 Exhibit 6.8 Existing/Replacement SGU DNL Noise Contours 2010 ...... 6-35 Exhibit 6.9 TA-65 with Existing and Replacement Airports 2010 Forecast ...... 6-37 Exhibit 6.10 Change in Time Above 65 dBA With Replacement Airport 2010 Forecast...... 6-39 Exhibit 6.11. Number of Events Above LAmax 65 dBA With Existing and Replacement Airport 2010 Forecast...... 6-41 Exhibit 6.12 Change in Number of Events Above 65 dBA With Replacement Airport Forecast 2010 ...... 6-43 Exhibit 6.13 Existing/Replacement SGU DNL Noise Contours – 2020 ...... 6-45 Exhibit 6.14 TA-65 with Existing and Replacement Airports 2020 Forecast ...... 6-47 Exhibit 6.15 Change in Time Above 65 dBA With Replacement Airport 2020 Forecast...... 6-49 Exhibit 6.16 Number of Events Above LAmax 65 dBA With Existing and Replacement Airport 2020 Forecast...... 6-51 Exhibit 6.17 Change in Number of Events Above 65 dBA with Replacement Airport Forecast 2020 ...... 6-53 Exhibit 6.18 Zion National Park L50 Existing Ambient Sound Levels...... 6-97 Exhibit 6.19 Zion National Park L50 Natural Ambient Sound Levels ...... 6-99 Exhibit 6.20 Modeled Flight Tracks To/From St. George Airports that Pass Over/Near Zion National Park...... 6-105 Exhibit 6.21 Existing and Proposed Replacement Airport Flight Tracks- North Departures ...... 6-125 Exhibit 6.22 Existing and Proposed Replacement Airport Flight Tracks- South Departures ...... 6-127 Exhibit 6.23 Existing and Proposed Replacement Airport Flight Tracks- North Arrivals ...... 6-129 Exhibit 6.24 Existing and Proposed Replacement Airport Flight Tracks- South Arrivals...... 6-131 Exhibit 6.25 Noise Measurements Sites, Little Black Mountain ...... 6-431

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PAGE Chapter Seven Exhibit 7.1 Zion National Park – Federal Airways ...... 7-11 Exhibit 7.2 Non-SGU INM Flight Tracks Over Zion National Park...... 7-13 Exhibit 7.3 Existing & Replacement SGU Air Tour Operator Flight Tracks – 2003/2010/2020...... 7-15 Exhibit 7.4 Overflight Tracks – 2003/2010/2020...... 7-17 Exhibit 7.5 Las Vegas Overflights Arrivals and Departures – 2003/ 2010/2020...... 7-19 Exhibit 7.6 Change in 2020 Noise Levels Leq(D) Above Natural Ambient with Proposed Replacement Airport...... 7-29 Exhibit 7.7 Change in Time Above Existing Ambient – 2020 with Replacement Airport ...... 7-31 Exhibit 7.8 Change in Time Above Natural Ambient – 2020 with Replacement Airport ...... 7-33 Exhibit 7.9 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 20 dBA ...... 7-37 Exhibit 7.10 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 25 dBA ...... 7-39 Exhibit 7.11 Change in 2010 Cumulative Noise With Proposed Replacement Airport Number of Events Above 35 dBA ...... 7-41 Exhibit 7.12 Change in 2010 Cumulative Noise With Proposed Replacement Airport Number of Events Above 45dBA ...... 7-43 Exhibit 7.13 Change in 2010 Cumulative Noise With Proposed Replacement Airport Number of Events Above 55 dBA ...... 7-45 Exhibit 7.14 Change in 2010 Cumulative Noise With Proposed Replacement Airport Number of Events Above 60 dBA ...... 7-47 Exhibit 7.15 Change in 2020 Cumulative Noise With Proposed Replacement Airport Number of Events Above 20 dBA ...... 7-49 Exhibit 7.16 Change in 2020 Cumulative Noise With Proposed Replacement Airport Number of Events Above 25 dBA ...... 7-51 Exhibit 7.17 Change in 2020 Cumulative Noise With Proposed Replacement Airport Number of Events Above 35 dBA ...... 7-53 Exhibit 7.18 Change in 2020 Cumulative Noise With Proposed Replacement Airport Number of Events Above 45 dBA ...... 7-55 Exhibit 7.19 Change in 2020 Cumulative Noise With Proposed Replacement Airport Number of Events Above 55 dBA ...... 7-57 Exhibit 7.20 Change in 2020 Cumulative Noise With Proposed Replacement Airport Number of Events Above 60 dBA ...... 7-59 Exhibit 7.21 Zion National Park Management Zones ...... 7-63 Exhibit 7.22 Cumulative Aviation Noise Percent of Time Above Natural Ambient with Existing Airport 2010 ...... 7-65 Exhibit 7.23 Cumulative Aviation Noise Percent of Time Above Natural Ambient with Replacement Airport 2010 ...... 7-67

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PAGE Chapter Seven Exhibit 7.24 Cumulative Aviation Noise Percent of Time Above Natural Ambient with Existing Airport 2020 ...... 7-69 Exhibit 7.25 Cumulative Aviation Noise Percent of Time Above Natural Ambient with Replacement Airport 2020 ...... 7-71

Chapter Eight Exhibit 8.1 Initial Area of Investigation...... 8-31

Appendix B Exhibit B.1 Existing SGU North Flow Flight Tracks – 2003/2010/2020 ...... B-13 Exhibit B.2 Existing SGU North Flow Flight Tracks – 2003/2010/2020 ...... B-15 Exhibit B.3 Existing SGU South Flow Flight Tracks – 2003/2010/2020...... B-17 Exhibit B.4 Existing SGU South Flow Flight Tracks 2003/2010/2020...... B-19 Exhibit B.5 Existing SGU Touch & Go/Training Flight Tracks – 2003/2010/2020...... B-21 Exhibit B.6 Existing & Replacement SGU Air Tour Operator Flight Tracks – 2003/2010/2020...... B-23 Exhibit B.7 Existing & Replacement SGU Helicopter Flight Tracks – 2003/ 2010/2020...... B-25 Exhibit B.8 Replacement SGU North Flow Flight Tracks – 2010/2020 ...... B-29 Exhibit B.9 Replacement SGU North Flow Flight Tracks – 2010/2020 ...... B-31 Exhibit B.10 Replacement SGU South Flow Flight Tracks – 2010/2020 ...... B-33 Exhibit B.11 Replacement SGU South Flow Flight Tracks – 2010/2020 ...... B-35 Exhibit B.12 Replacement SGU Touch & Go/Training Flight Tracks – 2010/2020 ...... B-37 Exhibit B.13 Existing and Proposed Replacement Airport Flight Tracks – North Arrivals ...... B-39 Exhibit B.14 Existing and Proposed Replacement Airport Flight Tracks – South Arrivals...... B-41 Exhibit B.15 Existing and Proposed Replacement Airport Flight Tracks – North Departures ...... B-43 Exhibit B.16 Existing and Proposed Replacement Airport Flight Tracks – South Departures ...... B-45 Exhibit B.17 Las Vegas Overflights – Arrivals and Departures – 2003/ 2010/2020...... B-47 Exhibit B.18 Overflight Tracks – 2003/2010/2020...... B-49 Exhibit B.19 Zion National Park – Noise Measurement Locations ...... B-57 Exhibit B.20 Zion National Park – L50 Existing Ambient Sound Levels ...... B-61 Exhibit B.21 Zion National Park - L50 Natural Ambient Sound Levels ...... B-63 Exhibit B.22 Existing SGU DNL Noise Contours – 2003 ...... B-69 Exhibit B.23 Existing/Replacement SGU – DNL Noise Contours – 2010...... B-73

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PAGE Appendix B, continued Exhibit B.24 Existing/Replacement SGU – DNL Noise Contours – 2020...... B-75 Exhibit B.25 Local Grid Group ...... B-79 Exhibit B.26 St. George/Washington City Noise Sensitive Institutions ...... B-81 Exhibit B.27 TA-65 with Existing and Replacement Airports 2010 Forecast ...... B-97 Exhibit B.28 Change in Time Above 65 dBA with Replacement Airport – 2010 Forecast...... B-99 Exhibit B.29 TA-65 with Existing and Replacement Airports 2020 Forecast ...... B-101 Exhibit B.30 Change in Time Above 65 dBA with Replacement Airport 2020 Forecast...... B-103 Exhibit B.31 Number of Events Above LAmax 65 dBA with Existing and Replacement Airport – 2010 Forecast ...... B-105 Exhibit B.32 Change in Number of Events Above 65 dBA with Replacement Airport Forecast 2010...... B-107 Exhibit B.33 Number of Events Above LAmax 65 dBA with Existing and Replacement Airport – 2020 Forecast ...... B-109 Exhibit B.34 Change in Number of Events Above 65 dBA with Replacement Airport Forecast - 2020 ...... B-111 Exhibit B.35 Key to Interpreting Location of Data Reported in Tables...... B-117 Exhibit B.36 Section 4(f)/Section 303(c) Grid Point Sets ...... B-119 Exhibit B.37 Change in 2010 Cumulative Noise Levels Above DNL 25 dBA with Proposed Replacement Airport ...... B-241 Exhibit B.38 Change in 2020 Cumulative Noise Levels Above DNL 25 dBA with Proposed Replacement Airport ...... B-243

Exhibit B.39 Change in 2010 Cumulative Noise Levels Above Leq(24) 25 dBA with Proposed Replacement Airport ...... B-245

Exhibit B.40 Change in 2020 Cumulative Noise Levels Above Leq(24) 25 dBA with Proposed Replacement Airport ...... B-247

Exhibit B.41 Change in 2010 Cumulative Noise Levels Above Leq(Day) 25 dBA with Proposed Replacement Airport ...... B-249

Exhibit B.42 Change in 2020 Cumulative Noise Levels Above Leq(Day) 25 dBA with Proposed Replacement Airport ...... B-251 Exhibit B.43 Change in 2010 Cumulative Noise Levels with Proposed Replacement Airport Time Above 29 dBA ...... B-253 Exhibit B.44 Change in 2020 Cumulative Noise Levels with Proposed Replacement Airport Time Above 29 dBA ...... B-255 Exhibit B.45 Change in 2010 Cumulative Noise with Replacement Airport Number of Events Above 25 dBA ...... B-257 Exhibit B.46 Change in 2020 Cumulative Noise with Replacement Airport Number of Events Above 25 dBA ...... B-259 Exhibit B.47 Change in 2010 Cumulative Noise with Replacement Airport Number of Events Above 35 dBA ...... B-261

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PAGE Appendix B, continued Exhibit B.49 Change in 2010 Cumulative Noise with Replacement Airport Number of Events Above 45 dBA ...... B-265 Exhibit B.48 Change in 2020 Cumulative Noise with Replacement Airport Number of Events Above 35 dBA ...... B-263 Exhibit B.50 Change in 2020 Cumulative Noise with Replacement Airport Number of Events Above 45 dBA ...... B-267 Exhibit B.51 Change in 2010 Cumulative Noise with Replacement Airport Number of Events Above 55 dBA ...... B-269 Exhibit B.52 Change in 2020 Cumulative Noise with Replacement Airport Number of Events Above 45 dBA ...... B-271 Exhibit B.53 Change in 2010 Cumulative Noise with Replacement Airport Number of Events Above 65 dBA ...... B-273 Exhibit B.54 Change in 2020 Cumulative Noise with Replacement Airport Number of Events Above 65 dBA ...... B-275 Exhibit B.55 Grid Points and Key to Interpreting Location of Data Reported in Tables for Zion National Park ...... B-307

Exhibit B.56 Change in 2010 Noise Levels Leq(D) Above Existing Ambient with Proposed Replacement Airport...... B-309

Exhibit B.57 Change in 2020 Noise Levels Leq(D) Above Existing Ambient with Proposed Replacement Airport...... B-311

Exhibit B.58 Change in 2010 Noise Levels Leq(D) Above Natural Ambient with Proposed Replacement Airport...... B-313

Exhibit B.59 Change in 2020 Noise Levels Leq(D) Above Natural Ambient with Proposed Replacement Airport...... B-315 Exhibit B.60 Change in Time Above Existing Ambient – 2010 with Replacement Airport ...... B-317 Exhibit B.61 Change in Time Above Existing Ambient – 2020 with Replacement Airport ...... B-319 Exhibit B.62 Change in Time Above Natural Ambient – 2010 with Replacement Airport ...... B-321 Exhibit B.63 Change in Time Above Natural Ambient – 2020 with Replacement Airport ...... B-323 Exhibit B.64 Change in Time Above 45 dBA with Proposed Replacement Airport – Forecast 2010...... B-325 Exhibit B.65 Change in Time Above 45 dBA with Proposed Replacement Airport – Forecast 2020...... B-327 Exhibit B.66 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 20 dBA ...... B-329 Exhibit B.67 Change in 2020 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 20 dBA ...... B-331 Exhibit B.68 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 25 dBA ...... B-333

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PAGE Appendix B, continued Exhibit B.69 Change in 2020 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 25 dBA ...... B-335 Exhibit B.70 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 35 dBA ...... B-337 Exhibit B.71 Change in 2020 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 35 dBA ...... B-339 Exhibit B.72 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 45 dBA ...... B-341 Exhibit B.73 Change in 2020 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 45 dBA ...... B-343 Exhibit B.74 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 55 dBA ...... B-345 Exhibit B.75 Change in 2020 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 55 dBA ...... B-347 Exhibit B.76 Change in 2010 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 60 dBA ...... B-349 Exhibit B.77 Change in 2020 Cumulative Noise with Proposed Replacement Airport – Number of Events Above 60 dBA ...... B-351

Appendix C Exhibit C.1 AirStar, Air Grand Canyon, Grand Canyon Airlines, Markarion and Windstock Tour Routes ...... C-27 Exhibit C.2 AirVegas Airlines and Scenic Airlines Tour Routes...... C-29 Exhibit C.3 American Aviation Tour Routes...... C-31 Exhibit C.4 Bryce Canyon Airlines and M&S Aero Tour Routes ...... C-33 Exhibit C.5 Heli USA, Papillion and Sundance Helicopter Tour Routes ...... C-35 Exhibit C.6 King Airlines and Las Vegas Helicopters Tour Routes ...... C-37 Exhibit C.7 Maverick and Sundance Helicopters Tour Routes...... C-39

Appendix J Exhibit J.1 – Wells at Proposed Replacement Airport Site ...... J-5

APPENDIX T Exhibit T.1 Representative INM Spectral Data ...... T-2

Exhibit T-2 Zion National Park Existing Ambient Composite Spectra (L50)...... T-3

Exhibit T-3 Zion National Park Natural Ambient Composite Spectra (L50) ...... T-4 Exhibit T-4 Audibility Analysis of Two Separate Sound Signals ...... T-5 Exhibit T-5 Grid Points and Key to Interpreting Location of Data Reported in Tables for Zion National Park ...... T-13

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APPENDIX T, continued Exhibit T-6 Change in Project Noise 2010 Cumulative Percent Time Audible %TAexisting ...... T-15 Exhibit T-7 Change in Project Noise 2020 Cumulative Percent Time Audible %TAexisting ...... T-17 Exhibit T-8 Change in Project Noise 2010 Cumulative Percent Time Audible %TAnatural ...... T-19 Exhibit T-9 Change in Project Noise 2020 Cumulative Percent Time Audible %TAnatural ...... T-21 Exhibit T-10 Relative Change in Project Noise 2010 Airport Only Percent Audible % TAexisting ...... T-23 Exhibit T-11 Relative Change in Project Noise 2020 Airport Only Percent Audible % TAexisting ...... T-25 Exhibit T-12 Relative Change in Project Noise 2010 Airport Only Percent Time Audible % TAnatural ...... T-27 Exhibit T-13 Relative change in Project noise 2020 Airport Only Percent Time Audible %TAnatural ...... T-29

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LIST OF FIGURES PAGE Chapter Five Figure 5.1 Airspace Classifications ...... 5-96 Figure 5.2 Example of a Standard Airport Traffic Pattern ...... 5-98

Chapter Six Figure 6.1 Temperature Inversion...... 6-78 Figure 6.2 View From Proposed Replacement Airport Site Looking West ...... 6-513 Figure 6.3 View From Proposed Replacement Airport Site Looking East Toward Warner Ridge ...... 6-513

Chapter Seven Figure 7.1 Relationship Between St. George and Cumulative Aviation Noise Levels – Zion National Park Head- Quarters – 2020 ...... 7-4

Appendix A Figure A.1 Comparison of Sound...... A-2 Figure A.2 Relationship Between DNL and Percent Highly Annoyed ...... A-8 Figure A.3 Speech Interference ...... A-9 Figure A.4 FICON 1992 vs. FICAN 1997 Sleep Disturbance Curves...... A-11

Appendix B Figure B.1 Relationship Between St. George Airport and Cumulative Aviation Noise Levels - Zion National Park Headquarters 2020 ...... B-280 Appendix E Figure E.1 Forecast Enplanements Developed Through Regression Analyses ...... E-4

Appendix F Figure F.1 Project Location Map...... F-8 Figure F.2 Land Jurisdiction Map...... F-9 Figure F.3 Survey Area, Identified Cultural Resources, and Previously Recorded Sites...... F-11 Figure F.4 Project Site and Previously Conducted Surveys...... F-17

Appendix I Figure I.1 Little Black Mountain Petroglyph Site Parking Lot and Entrance ...... I-1 Figure I.2 All Terrain Vehicles (ATVs) parked at Little BlackMountain Petroglyph Site ...... I-2 Figure I.3 Little Black Mountain Petroglyph Site Noise Monitoring Locations...... I-3 Figure I.4 Little Black Mountain Petroglyph Site Noise Monitoring Locations Field Sketch ...... I-3

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PAGE Appendix I, continued Figure I.5 LBM Site #1 Noise Monitor Location ...... I-4 Figure I.6 LBM Site #2 Noise Monitor Location ...... I-5 Figure I.7 LBM Site #3 Noise Monitor Location ...... I-6 Figure I.8 Hourly Leq Plots ...... I-10 Figure I.9 Hourly L50 Plots...... I-11

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LIST OF PHOTOGRAPHS PAGE Appendix F Photograph F.1 View of the Proposed Replacement Airport Site, Facing Southeast ...... F-13

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