Environmental Assessment Implementation of the Real Property Master Plan Update Parks Reserve Forces Training Area Dublin, California November 2020 Contract No. W912QR-18-D-0018 Delivery Order W912QR19F0969 Prepared for Parks Reserves Forces Training Area Dublin, California and U.S. Army Corps of Engineers, Louisville District Louisville, Kentucky Prepared by Jacobs Contents Environmental Assessment November 2020 Contents Acronyms and Abbreviations .................................................................................................................... v 1. Purpose and Need for the Proposed Action ............................................................................ 1-1 1.1 Introduction ...................................................................................................................... 1-1 1.2 Purpose and Need ........................................................................................................... 1-1 1.2.1 Purpose of the Action ......................................................................................... 1-1 1.2.2 Need of the Action .............................................................................................. 1-9 1.3 Scope and Content of the EA .......................................................................................... 1-9 1.4 Decision(s) to be Made .................................................................................................... 1-9 1.5 Public and Agency Participation .................................................................................... 1-10 2. Description of Proposed Action and Alternatives ................................................................... 2-1 2.1 Description of the Proposed Action .................................................................................. 2-1 2.1.1 Short-Range Projects .......................................................................................... 2-1 2.1.2 Mid-Range Projects ............................................................................................ 2-7 2.1.3 Long-Range Projects .......................................................................................... 2-8 2.1.4 Building Demolition ............................................................................................. 2-9 2.2 No Action Alternative...................................................................................................... 2-10 2.3 Alternatives Considered but Eliminated from Further Consideration ............................. 2-10 3. Affected Environment, Environmental Consequences, and Mitigation ................................ 3-1 3.1 Resources Eliminated from Further Consideration .......................................................... 3-1 3.1.1 Resources Considered in Detail ......................................................................... 3-1 3.1.2 Land Use ............................................................................................................. 3-2 3.1.3 Aesthetics .......................................................................................................... 3-13 3.1.4 Air Quality and Greenhouse Gases .................................................................. 3-13 3.1.5 Biological Resources ........................................................................................ 3-23 3.1.6 Cultural Resources ........................................................................................... 3-27 3.1.7 Water Resources and Water Quality ................................................................ 3-29 3.1.8 Geology, Soils and Seismicity ........................................................................... 3-45 3.1.9 Noise ................................................................................................................. 3-47 3.1.10 Transportation ................................................................................................... 3-55 3.1.11 Hazardous Materials/Hazardous Waste ........................................................... 3-65 3.1.12 Socioeconomics and Environmental Justice .................................................... 3-66 3.1.13 Utilities and Infrastructure ................................................................................. 3-69 3.1.14 Cumulative Effects ............................................................................................ 3-71 4. Findings and Conclusions ......................................................................................................... 4-1 4.1 Findings ............................................................................................................................ 4-1 4.1.1 Consequences of the Preferred Alternative ........................................................ 4-1 4.1.2 Consequences of the No Action Alternative ....................................................... 4-1 4.2 Conclusions ...................................................................................................................... 4-1 5. References ................................................................................................................................... 5-1 Appendixes A Coordination Letters and Responses B Notice of 30-Day Period for Public Comment C Air Quality Emission Calculations iii Contents Environmental Assessment November 2020 Tables 2-1 Short-Range Construction Project List .......................................................................................... 2-7 2-2 Mid-Range Construction Project List ............................................................................................ 2-7 2-3 Long-Range Construction Project List .......................................................................................... 2-8 2-4 Building Demolition List ................................................................................................................. 2-9 3-1 Existing Cantonment District Land Use Categories ...................................................................... 3-2 3-2 Proposed Cantonment District Land Use Categories ................................................................... 3-7 3-3 National Ambient Air Quality Standards ...................................................................................... 3-14 3-4 Attainment Status in Alameda County and Contra Costa County .............................................. 3-18 3-5 Air Monitoring Data Summary ..................................................................................................... 3-19 3-6 Construction Emissions – Proposed Action ................................................................................ 3-21 3-7 Operation Emissions – Proposed Action .................................................................................... 3-21 3-8 Comparison of Proposed Action Emissions and General Conformity De Minimis Thresholds .. 3-22 3-9 Construction and Operational Emissions of Greenhouse Gases – Proposed Action ................. 3-23 3-10 Special-status Species and Species of Special Concern ........................................................... 3-25 3-11 Noise Levels of Construction Equipment at 50 and 100 Feet ..................................................... 3-53 3-12 Cantonment District Road Types ................................................................................................ 3-55 3-13 Planned Projects in the Vicinity of PRFTA .................................................................................. 3-72 4-1 Summary Level of Impact to Each Resource Area ....................................................................... 4-1 Figures 1-1 Site Location Map ......................................................................................................................... 1-3 1-2 Cantonment District Map............................................................................................................... 1-5 1-3 Range District Map ........................................................................................................................ 1-7 2-1 Cantonment District Projects ........................................................................................................ 2-3 2-2 Range District Projects .................................................................................................................. 2-5 3-1 Cantonment District – Existing Land Use ..................................................................................... 3-3 3-2 Range District – Existing Land Use .............................................................................................. 3-5 3-3 Cantonment District – Proposed Land Use ................................................................................... 3-9 3-4 Range District – Proposed Land Use .......................................................................................... 3-11 3-5 Cantonment District – Existing Natural Resource Constraints ................................................... 3-31 3-6 Range District – Existing Natural Resource Constraints ............................................................ 3-33 3-7 Natural Resources Constraints – Proposed Conditions – Cantonment District .......................... 3-39 3-8 Natural Resources Constraints – Proposed Conditions – Range District ................................... 3-41 3-9 Green Infrastructure Plan – Cantonment District .......................................................................