National Park Service, U.S. Department of the Interior The Presidio Trust Presidio of San Francisco, Golden Gate National Recreation Area July 2003 Presidio Trails and Bikeways Master Plan & Environmental Assessment TABLE OF CONTENTS Chapter 1: Introduction A Vision of the Future . .1 The Master Plan . .1 Analysis and Alternatives Development . .2 Document Organization . .2 The Presidio's History . .3 Planning Context . .4 Planning Process . .4 Public Involvement . .6 Changes to the Trails Plan . .7 Plan Implementation . .10 Prioritization and Phasing . .10 Environmental Assessment . .10 Chapter 2: Purpose and Need Project Purpose . .13 Project Need . .13 Goals . .13 Chapter 3: Trail Classifications and Design Guidelines User Groups . .17 Trails and Bikeways Classification System . .17 Pedestrian Trails . .19 Multi-Use Trails . .21 Bikeways . .22 Bikeway Design . .22 Accessibility . .24 Accessible Trails . .25 CONTENTS i Presidio Trails & Bikeways master plan Trail Features . .27 Best Management Practices . .29 Chapter 4: Alternatives Alternative Descriptions . .31 Changes to Existing Trail Corridors . .35 New Trail Corridors . .44 Overall Trail Network . .48 Comparisons at Key Locations . .58 Environmentally Preferrable Alternative . .66 Chapter 5: Environmental Consequences Introduction and Methodology . .67 Geologic Resources . .67 Hydrologic Resources . .69 Biological Resources . .71 Cultural Resources . .78 Traffic Safety . .80 Visitor Use . .83 Visual Resources . .86 Air Quality . .88 Noise . .89 Cumulative Impacts . .90 Impact Topics Dismissed from Further Analysis . .96 Chapter 6: Consultation and References Interagency Review . .97 List of Persons and Agencies Consulted . .98 List of Preparers . .99 References . .99 ii CONTENTS Chapter 7: Appendices Appendix A: Finding of No Significant Impact . .A-1 Appendix B: Response to Comments . .B-1 Appendix C: Best Management Practices . .C-1 Appendix D: Cumulative Project List . .D-1 Figures 1-1. Regional Map . .3 1-2. The Presidio of San Francisco . .5 1-3. Changes to the Preferred Alternative, Pedestrian, Multi-Use Trails and Bicycle Routes . .12 3-1. Pedestrian Trails . .19 3-2. Pedestrian Trail Detail . .19 3-3. Multi-Use Trail . .21 3-4. Typical Bike Lanes on Roadway . ..