Executive Summary
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Preliminary Mitigated Negative Declaration Date: January 9, 2019 Case No.: 2016-006868ENV Project Title: SFPUC Reliable Power Project Project Location: Portions of the San Francisco Public Utilities Commission Rights of Way in Stanislaus, Mariposa, and Tuolumne Counties Zoning: Various Project Sponsor San Francisco Public Utilities Commission Antonia Sivyer (415) 554-2474 Lead Agency: San Francisco Planning Department Staff Contact: Timothy Johnston – (415) 575-9035 [email protected] PROJECT DESCRIPTION: The San Francisco Public Utilities Commission (SFPUC) proposes to implement the Reliable Power Project (proposed project) for maintaining the reliability of the SFPUC’s electrical transmission system between the Holm and Kirkwood Powerhouses and the Warnerville Substation. The project includes implementation of a long-term vegetation management program that would address the North American Electric Reliability Corporation’s reliability standard (FAC-003) and other regulatory requirements that seek to minimize the risk of power outages and fires from vegetation contact with transmission lines on or near the right of way for electrical transmission lines1. In addition to implementation of the vegetation management program, the proposed project would include repairs and replacements for culverts associated with transmission line access roads and construction of a sand storage shed to stockpile sand for winter road treatments needed for access during winter months. Construction activities associated with the proposed project would occur within existing SFPUC facility and right of way boundaries in Stanislaus County, Mariposa County, and Tuolumne County, and would not require the acquisition of new property. Project implementation involving vegetation management would be ongoing. Construction activities and duration for culvert repair and/or replacement would vary along the transmission corridor, but would be short-term in nature, generally requiring a few of days to a couple of weeks to complete. Construction of the sand storage shed would take approximately one month. FINDING: This project could not have a significant effect on the environment. This finding is based upon the criteria of the Guidelines of the State Secretary for Resources, Sections 15064 (Determining Significant Effect), 15065 (Mandatory Findings of Significance), and 15070 (Decision to prepare a Negative Declaration), and the following reasons as documented in the Initial Evaluation (Initial Study) for the project, which is attached. 1 More information available at: http://www.nerc.com/pa/Stand/Pages/Project-2010-07-1-Vegetation-Management.aspx www.sfplanning.org Preliminary Mitigated Negative Declaration CASE NO. 2016-006868ENV SFPUC Reliable Power Project Mitigation measures are included in this project to avoid potentially significant effects. See pages 204 - 223. 2 Screencheck Draft (December 2018) – Subject to Change Initial Study SFPUC Reliable Power Project Planning Department Case No. 2016-006868ENV Table of Contents A. PROJECT DESCRIPTION ............................................................................................................................ 1 A.1. Project Overview ..................................................................................................................... 1 A.2. Project Location and Setting .................................................................................................. 1 A.3. Background .............................................................................................................................. 3 B. PROJECT SETTING ....................................................................................................................................... 7 B.1. Project Objectives .................................................................................................................... 7 B.2. Project Components ................................................................................................................ 7 B.3. Project Construction ............................................................................................................. 25 B.4. Project Approvals .................................................................................................................. 32 C. COMPATIBILITY WITH EXISTING ZONING AND PLANS ............................................................ 34 C.1. City and County of San Francisco Plans and Policies ...................................................... 34 C.2. SFPUC Plans and Policies .................................................................................................... 37 C.3. Other Plans ............................................................................................................................. 39 D. SUMMARY OF ENVIRONMENTAL EFFECTS ..................................................................................... 41 D.1. Public Resources Code Section 21099 ................................................................................. 41 D.2. Approach to Cumulative Impact Analysis ........................................................................ 43 E. EVALUATION OF ENVIRONMENTAL EFFECTS ............................................................................... 48 E.1. Land Use and Planning ........................................................................................................ 48 E.2. Aesthetics ............................................................................................................................... 50 E.3. Population and Housing ...................................................................................................... 55 E.4. Cultural Resources ................................................................................................................ 57 E.5. Transportation and Circulation ........................................................................................... 78 E.6. Noise ....................................................................................................................................... 85 E.7. Air Quality ............................................................................................................................. 91 E.8. Greenhouse Gas Emissions ................................................................................................ 107 E.9. Wind and Shadow............................................................................................................... 117 E.10. Recreation ............................................................................................................................. 118 E.11. Utilities and Service Systems ............................................................................................. 120 E.12. Public Services ..................................................................................................................... 123 E.13. Biological Resources ........................................................................................................... 124 E.14. Geology and Soils ................................................................................................................ 174 E.15. Hydrology and Water Quality .......................................................................................... 182 E.16. Hazards and Hazardous Materials ................................................................................... 189 E.17. Mineral and Energy Resources .......................................................................................... 197 E.18. Agriculture and Forest Resources ..................................................................................... 200 E.19. Mandatory Findings of Significance ................................................................................. 202 F. MITIGATION MEASURES ..................................................................................................................... 204 Case No. 2016-006868ENV i SFPUC Reliable Power Project G. PUBLIC NOTICE AND COMMENT ...................................................................................................... 223 G.1. Notification of Project Receiving Environmental Review ............................................. 223 G.2. Tribal Notification ............................................................................................................... 225 H. DETERMINATION .................................................................................................................................... 226 I. INITIAL STUDY PREPARERS ................................................................................................................ 227 Project Sponsor ........................................................................................................................................ 227 Initial Study Consultants ....................................................................................................................... 227 List of Figures Figure 1: Regional Map .............................................................................................................................................. 2 Figure 2A: Reliable Power Project Alignment ........................................................................................................ 9 Figure 2B: Reliable Power Project Alignment ......................................................................................................