R687 MND June 2020
Total Page:16
File Type:pdf, Size:1020Kb
INITIAL STUDY/MITIGATED NEGATIVE DECLARATION PACIFIC GAS & ELECTRIC COMPANY R-687 L-215 SAN JOAQUIN RIVER CROSSING REPLACEMENT PROJECT June 2020 Lead Agency: California State Lands Commission 100 Howe Avenue, Suite 100 South Sacramento, California 95825 Applicant: Pacific Gas & Electric Company 4040 West Lane, Building #9 (113C) Stockton, California 95204 MISSION STATEMENT The California State Lands Commission provides the people of California with effective stewardship of the lands, waterways, and resources entrusted to its care through preservation, restoration, enhancement, responsible economic development, and the promotion of public access. CEQA DOCUMENT WEBSITE www.slc.ca.gov/ceqa/ Geographic Location (Proposed River Crossing) Latitude: 37°26’58.94” N Longitude: 121°1’44.42” W WGS84 Datum Cover Photo: (Photo courtesy of Google Earth) Table of Contents TABLE OF CONTENTS LIST OF TABLES ......................................................................................................... v LIST OF ABBREVIATIONS AND ACRONYMS ......................................................... vii EXECUTIVE SUMMARY ........................................................................................ ES-1 1.0 PROJECT AND AGENCY INFORMATION ................................................... 1-1 1.1 PROJECT TITLE ............................................................................................ 1-1 1.2 LEAD AGENCY AND PROJECT SPONSOR ................................................. 1-1 1.3 PROJECT LOCATION ................................................................................... 1-1 1.4 ORGANIZATION OF THE MITIGATED NEGATIVE DECLARATION ............ 1-1 1.5 PROJECT BACKGROUND AND OBJECTIVES ............................................ 1-5 1.6 PUBLIC REVIEW AND COMMENT ............................................................... 1-5 1.7 APPROVALS AND REGULATORY REQUIREMENTS .................................. 1-6 1.7.1 California State Lands Commission .............................................. 1-6 1.7.2 Other Agencies ............................................................................. 1-7 2.0 PROJECT DESCRIPTION ............................................................................. 2-1 2.1 PHASE 1 (Replacement Pipeline Installation) ................................................ 2-1 2.1.1 Site Access ................................................................................... 2-2 2.1.2 HDD Work Areas ........................................................................... 2-2 2.1.3 HDD Methods ................................................................................ 2-4 2.1.4 Phase 1 Schedule ....................................................................... 2-13 2.2 PHASE 2 (DECOMMISSIONING OF EXISTING L-215 PIPELINE) ............. 2-14 2.2.1 Decommissioning Work Areas .................................................... 2-14 2.2.2 Pigging and Flushing ................................................................... 2-17 2.2.3 Decommissioning Methods ......................................................... 2-18 2.2.4 Water Disposal Requirements ..................................................... 2-25 2.2.5 Phase 2 Schedule ....................................................................... 2-25 2.3 PRE-PROJECT PREPARATION ACTIVITIES AND SURVEYS ................... 2-26 2.3.1 Phase 1 APMs ............................................................................ 2-26 2.3.2 Phase 2 APMs ............................................................................ 2-26 3.0 ENVIRONMENTAL CHECKLIST AND ANALYSIS ....................................... 3-1 3.1 AESTHETICS ................................................................................................. 3-3 3.1.1 Environmental Setting ................................................................... 3-3 3.1.2 Regulatory Setting ......................................................................... 3-5 3.1.3 Impact Analysis ............................................................................. 3-5 3.1.4 Mitigation Summary ...................................................................... 3-8 3.2 AGRICULTURE AND FORESTRY RESOURCES ......................................... 3-9 June 2020 i PG&E R-687 L-215 San Joaquin River Crossing Replacement Project MND Table of Contents 3.2.1 Environmental Setting ................................................................... 3-9 3.2.2 Regulatory Setting ....................................................................... 3-10 3.2.3 Impact Analysis ........................................................................... 3-14 3.2.4 Mitigation Summary .................................................................... 3-15 3.3 AIR QUALITY ............................................................................................... 3-16 3.3.1 Environmental Setting ................................................................. 3-16 3.3.2 Regulatory Setting ....................................................................... 3-21 3.3.3 Impact Analysis ........................................................................... 3-22 3.3.4 Mitigation Summary .................................................................... 3-25 3.4 BIOLOGICAL RESOURCES ........................................................................ 3-26 3.4.1 Environmental Setting ................................................................. 3-26 3.4.2 Regulatory Setting ....................................................................... 3-33 3.4.3 Impact Analysis ........................................................................... 3-34 3.4.4 Mitigation Summary .................................................................... 3-41 3.5 CULTURAL RESOURCES ........................................................................... 3-42 3.5.1 Environmental Setting ................................................................. 3-42 3.5.2 Regulatory Setting ....................................................................... 3-48 3.5.3 Impact Analysis ........................................................................... 3-50 3.5.4 Mitigation Summary .................................................................... 3-53 3.6 CULTURAL RESOURCES – TRIBAL .......................................................... 3-54 3.6.1 Environmental Setting ................................................................. 3-54 3.6.2 Regulatory Setting ....................................................................... 3-56 3.6.3 Impact Analysis ........................................................................... 3-56 3.6.4 Mitigation Summary .................................................................... 3-57 3.7 ENERGY ................................................................................................... 3-58 3.7.1 Environmental Setting ................................................................. 3-58 3.7.2 Regulatory Setting ....................................................................... 3-58 3.7.3 Impact Analysis ........................................................................... 3-58 3.7.4 Mitigation Summary .................................................................... 3-59 3.8 GEOLOGY, SOILS, AND PALEONTOLOGICAL RESOURCES .................. 3-60 3.8.1 Environmental Setting ................................................................. 3-60 3.8.2 Regulatory Setting ....................................................................... 3-63 3.8.3 Impact Analysis ........................................................................... 3-65 3.8.4 Mitigation Summary .................................................................... 3-69 3.9 GREENHOUSE GAS EMISSIONS ............................................................... 3-70 3.9.1 Environmental Setting ................................................................. 3-70 3.9.2 Regulatory Setting ....................................................................... 3-71 3.9.3 Impact Analysis ........................................................................... 3-72 PG&E R-687 L-215 San Joaquin River ii June 2020 Crossing Replacement Project MND Table of Contents 3.9.4 Mitigation Summary .................................................................... 3-74 3.10 HAZARDS AND HAZARDOUS MATERIALS ............................................... 3-75 3.10.1 Environmental Setting ................................................................. 3-75 3.10.2 Regulatory Setting ....................................................................... 3-76 3.10.3 Impact Analysis ........................................................................... 3-77 3.10.4 Mitigation Summary .................................................................... 3-82 3.11 HYDROLOGY AND WATER QUALITY ........................................................ 3-83 3.11.1 Environmental Setting ................................................................. 3-83 3.11.2 Regulatory Setting ....................................................................... 3-87 3.11.3 Impact Analysis ........................................................................... 3-90 3.11.4 Mitigation Summary .................................................................... 3-93 3.12 LAND USE AND PLANNING ........................................................................ 3-95 3.12.1 Environmental Setting ................................................................