Stream Maintenance Program Final Environmental Impact Report Prepared for: Sonoma County Water Agency 404 Aviation Boulevard Santa Rosa, CA 95406 Contact: Keenan Foster 707/547‐1941 Prepared by: Horizon Water and Environment 1330 Broadway, Suite 424 Oakland, CA 94612 Contact: Michael Stevenson 510/986‐1852 June 2009 Horizon Water and Environment. 2009. Stream Maintenance Program – Final Environmental Impact Report. June. (HWE 08.002.) Oakland, CA. TABLE OF CONTENTS Chapter 1. Introduction Format and Organization of Final EIR ......................................................................................... 1–1 Public Review of Draft EIR ............................................................................................................... 1–1 Public Hearing on Draft EIR ............................................................................................................. 1–2 Preparation of Final EIR .................................................................................................................... 1–2 List of Commenters on the Draft EIR ........................................................................................... 1–2 Chapter 2. Comments and Responses Introduction ........................................................................................................................................... 2‐1 Letter A: Ken Giovanetti .................................................................................................... follows 2‐1 Response to Letter A ........................................................................................................................... 2‐2 Letter B: Greg Boyes ........................................................................................................... follows 2‐2 Response to Letter B ............................................................................................................................ 2‐3 Letter C: Public Hearing before the Sonoma County Board of Supervisors ............................................................................................................................. follows 2‐3 Response to Letter C ........................................................................................................................... 2‐4 Letter D: Howard Wilshire ............................................................................................... follows 2‐6 Response to Letter D .......................................................................................................................... 2‐7 Letter E: Leslie Wolseth..................................................................................................... follows 2‐7 Response to Letter E ........................................................................................................................... 2‐8 Letter F: J.M. Baeli ................................................................................................................ follows 2‐8 Response to Letter F ........................................................................................................................... 2‐9 Letter G: Brenda Tomaras ................................................................................................ follows 2‐9 Response to Letter G ......................................................................................................................... 2‐10 Letter H: Russian River Watershed Association ................................................... follows 2‐15 Response to Letter H ........................................................................................................................ 2‐16 Letter I: San Francisco Bay Conservation and Development Commission .......................................................................................................................... follows 2‐16 Response to Letter I .......................................................................................................................... 2‐17 Letter J: Cotati Creek Critters ........................................................................................ follows 2‐18 Response to Letter J .......................................................................................................................... 2‐19 Letter K: City of Petaluma ............................................................................................... follows 2‐22 Response to Letter K ......................................................................................................................... 2‐23 Letter L: City of Santa Rosa ............................................................................................ follows 2‐42 Response to Letter L ......................................................................................................................... 2‐43 Letter M: Laguna de Santa Rosa Foundation .......................................................... follows 2‐56 Response to Letter M ........................................................................................................................ 2‐57 Letter N: North Coast Regional Water Quality Control Board ......................... follows 2‐58 Response to Letter N ........................................................................................................................ 2‐59 Letter O: San Francisco Bay Regional Water Quality Control Board ............ follows 2‐65 Response to Letter O ........................................................................................................................ 2‐66 Letter P: California Department of Transportation ............................................. follows 2‐66 Response to Letter P ......................................................................................................................... 2‐67 Sonoma County Water Agency i June 2009 Project No. 08.002 Stream Maintenance Program Table of Contents Final Environmental Impact Report Letter Q: Department of Toxic Substances Control ............................................. follows 2‐67 Response to Letter Q ........................................................................................................................ 2‐68 Letter R: California State Lands Commission ......................................................... follows 2‐68 Response to Letter R ......................................................................................................................... 2‐69 Letter S: California Department of Fish and Game ............................................... follows 2‐69 Response to Letter S ......................................................................................................................... 2‐70 Letter T: Native American Heritage Commission ................................................. follows 2‐70 Response to Letter T ......................................................................................................................... 2‐71 Chapter 3. Changes and Corrections to the EIR Executive Summary ............................................................................................................................ 3‐1 Chapter 2. Program Description .................................................................................................... 3‐2 Chapter 3. Environmental Impacts ............................................................................................. 3‐12 Chapter 4. Other Statutory Considerations ............................................................................. 3‐18 Chapter 4. Draft Mitigation and Monitoring Plan General Avoidance and Minimization Measures ..................................................................... 4–2 Air Quality ............................................................................................................................................... 4–4 Biological Resources .......................................................................................................................... 4–5 Cultural Resources ........................................................................................................................... 4‐18 Hazardous Materials ......................................................................................................................... 4‐22 Vegetation Management ................................................................................................................. 4‐27 Water Quality and Channel Protection ..................................................................................... 4‐29 Good Neighbor Policies ................................................................................................................... 4‐31 Programmatic Mitigation ................................................................................................................ 4‐33 Sample SCWA Mitigation Monitoring Report ......................................................................... 4‐35 Chapter 5. Report Preparation ....................................................................................................... 5­1 Sonoma County Water Agency ii June 2009 Project No. 08.002 Stream Maintenance Program Table of Contents Final Environmental Impact Report LIST OF ACRONYMS ADRP archeological data recovery program ARM agreement for routine maintenance BMP Best Management Practices CCC Cotati Creek Critters CCR California Code of Regulations CDFG California