Draft Environmental Impact Report SCH# 2018011015 Public Draft March 5th, 2019 Draft Environmental Impact Report SLOCOG 2019 REGIONAL TRANSPORTATION PLAN Draft Environmental Impact Report 1 Draft Environmental Impact Report Contents S.0 Executive Summary ........................................................................................................................................................................ 1 1.0 INTRODUCTION ................................................................................................................................................................. 33 2.0 PROJECT DESCRIPTION ...................................................................................................................................................... 43 3.0 ENVIRONMENTAL SETTING AND IMPACT ANALYSIS ......................................................................................................... 59 3.1 AESTHETICS/VISUAL RESOURCES ...................................................................................................................................... 63 3.2 AIR QUALITY AND HEALTH IMPACTS/RISKS ...................................................................................................................... 71 3.3 BIOLOGICAL RESOURCES ................................................................................................................................................. 102 3.4 GREENHOUSE GAS EMISSIONS/CLIMATE CHANGE ......................................................................................................... 117 3.5 CULTURAL/HISTORIC AND TRIBAL CULTURAL RESOURCES ............................................................................................ 145 3.6 ENERGY RESOURCES ....................................................................................................................................................... 158 3.7 GEOLOGY AND SEISMICITY ............................................................................................................................................. 165 3.8 HAZARDS AND HAZARDOUS MATERIALS ........................................................................................................................ 174 3.9 LAND USE/CONSISTENCY WITH PLANS AND POLICIES .................................................................................................... 186 3.10 NOISE .............................................................................................................................................................................. 194 3.11 PUBLIC SERVICES AND UTILITIES ..................................................................................................................................... 217 3.12 POPULATION, HOUSING AND EMPLOYMENT ................................................................................................................. 225 3.13 TRANSPORTATION AND CIRCULATION ........................................................................................................................... 229 3.14 WATER RESOURCES ........................................................................................................................................................ 238 3.15 AGRICULTURAL RESOURCES .......................................................................................................................................... 253 4.0 ALTERNATIVES ................................................................................................................................................................ 259 5.0 CUMULATIVE IMPACTS ................................................................................................................................................... 267 6.0 OTHER STATUTORY CONSIDERATIONS ........................................................................................................................... 279 APPENDICES ..................................................................................................................................................................................... 297 VOLUME II – TECHNICAL APPENDICES ............................................................................................................................................. 297 SLOCOG 2019 REGIONAL TRANSPORTATION PLAN – DRAFT ENVIRONMENTAL IMPACT REPORT Page i Draft Environmental Impact Report Table of Figures Figure S-1: Executive Summary of Project Impacts Table .................................................................................................................... 5 Figure 2.2-1: San Luis Obispo County Location Map .......................................................................................................................... 43 Figure 2.4-1: 2019 RTP Goals and Policies ......................................................................................................................................... 48 Figure 3.1-1: County Routes Potentially Eligible for State Scenic Route Designation ........................................................................ 64 Figure 3.2-1: Year 20161 SIP Emission Projection Data ...................................................................................................................... 75 Figure 3.2-2: Ozone design Value Trends, 2008-2017 ....................................................................................................................... 76 Figure 3.2-3: Exceedances of the California 24-hour PM10 Standard, 2010-2017 ............................................................................ 77 Figure 3.2-4: PM2.5 Annual Averages, 2008-2017 ............................................................................................................................. 77 Figure 3.2-5: County Attainment Status Designation ........................................................................................................................ 79 Figure 3.2-6: Summary of Common Sources and Effects of Criteria Pollutants ................................................................................. 82 Figure 3.2-7: Thresholds of Significance for Construction Operations .............................................................................................. 90 Figure 3.4-1: California’s 2016 Greenhouse Gas Emissions by End Use .......................................................................................... 118 Figure 3.4-2: Annual Temperature During El Nino and La Nina Year 1951-1980 ............................................................................. 119 Figure 3.4-3: The Largest, Most Destructive, and Deadliest California Wildfires in the Last Century ............................................. 123 Figure 3.4-4: Sea Level Rise Projections in San Luis Obispo County ................................................................................................ 126 Figure 3.4-5: GHG Emissions in California ........................................................................................................................................ 130 Figure 3.4-6: San Luis Obispo 2015 Countywide Greenhouse Gas Emissions .................................................................................. 131 Figure 3.4-7: San Luis Obispo County Criteria Pollutants (2015-2045) ............................................................................................ 131 Figure 3.4-8: SB 375 Emissions Table ............................................................................................................................................... 140 Figure 3.5-1: National Register of Historic Places in San Luis Obispo County .................................................................................. 148 Figure 3.5-2: California State Landmarks ......................................................................................................................................... 149 Figure 3.6-1: Morro Bay Power Plant ............................................................................................................................................... 158 Figure 3.6-2: Diablo Canyon Nuclear Power Plant ........................................................................................................................... 159 Figure 3.7-1: San Luis Obispo County Geologic Study Areas (GSA) .................................................................................................. 166 Figure 3.9-1: RTP Goals & Policy Objectives..................................................................................................................................... 191 Figure 3.10-1: Common Noise Levels ............................................................................................................................................... 196 Figure 3.10-2: Common Acoustical Descriptors ............................................................................................................................... 197 Figure 3.10-3: Representative Union Pacific Railroad Noise Levels ................................................................................................. 199 Figure 3.10-4: Existing Noise Contours San Luis Obispo County Regional Airport ........................................................................... 201 Figure 3.10-5: Future (Year 2023) Noise Contours San Luis Obispo County Regional Airport ......................................................... 202 Figure 3.10-6: Existing