Caltrans District 4 Environmental Documents

Route 101 Auxiliary Lanes
State Route 12 Shoulder Widening from Azevedo to Liberty Island Roads
State Route 12 Jameson Canyon Road Widening & state routes 29/12 interchange project
State Route 12 in Sonoma County at the Laguna de Santa Rosa Bridge
Bay Area Archeology
Marin-Sonoma Narrows (MSN) HOV Widening Project Draft Environmental Impact Report
US Route 101 East Washington Street Interchange
SON-116 Roadway Rehabilitation Sebastopol-Cotati Inital Study
Archaeology of a San Francisco Neighborhood
State Route 4 Median Buffer Zone Project
State Route 84 Expressway Widening Project
Sonoma 101 HOV Widening and Improvements Project Old Redwood Highway
Interstate 80 High-Occupancy Vehicle Lane Project
Sonoma 101 HOV Widening and Improvements Project Steele Lane
The North Connector Project
I-580 Eastbound HOV Lane Project
I-580/Castro Valley Interchange Project
Caldecott Improvement Project Draft EA/EIR
SFOBB Maintenance Complex
Uvas Creek Bridge Replacement
Interstate 680 High Occupancy Vehicle &amp Auxiliary Lanes
Route 12 Arnold Drive Curve Realignment and Trinity Road Intersection
Route 84 Safety Improvement Project in Niles Canyon
Duhig Road Rehabilitation and Curve Realignment Project
Initial Study for the SON-116 Stage Gulch Road project
Rte 4 (East) Widening Project
Rte 84 Realignment &amp widening in Alameda County
Interstate 880/State Route 92 Interchange Reconstruction Project
Interstate 80 High Occupancy Vehicle Lane Gap Closure Project
Patterson Slough Bridge Deck
Support Documents for East Spans Replacement Environmental Document
Route 238 Hayward Bypass
Route 13
Route 37
Route 101
State Route 152
Route 92 Uphill Slow Vehicle Lane and /Safety Improvements
Wilfred Avenue Interchange Project

	Route 101 Auxiliary Lanes Initial Study
	State Route 12 Shoulder Widening from Azevedo to Liberty Island Roads, and Left-Turn Pockets at Currie, McCloskey and Azevedo Roads Initial Study with Proposed Mitigated Negative Declaration (CEQA)
	State Route 12 Jameson Canyon Road Widening & state routes 29/12 interchange project Jameson Canyon Document Page
	The California Department of Transportation (Caltrans) has prepared an environmental document for a bridge replacement project on State Route 12 in Sonoma County at the Laguna de Santa Rosa Bridge just east of Morris Street in Sebastopol. laguna_ss.pdf negdecpage.pdf ch1alocationmap.pdf ch1bprojectmap.pdf ch1cenvmap.pdf ch1dxsection.pdf ch1estaging.pdf appedixaceqachecklist.pdf appendixbtitle6.pdf appendixclayout.pdf appendixdusfws.pdf appendixewetland.pdf appendixfspecies.pdf appendixgplants.pdf
	Bay Area Archeology The History and Archaeology of Yerba Buena Island Archeology of A San Francisco Neighborhood Digging West Oakland Archeology of The Central Freeway Project
	Marin-Sonoma Narrows (MSN) HOV Widening Project Draft Environmental Impact Report/ Draft Environmental Impact Statement HOV Report
	US Route 101 East Washington Street Interchange Initial Study with Proposed Mitigated Negative Declaration, November 2007 Cover, Title, Proposed Mitigated Negative Declaration, Table of Contents, List of Acronyms Chapter 1 - Proposed Project Chapter 2 - Affected Environment, Environmental Consequences, and Avoidance, Minimization, and/or Mitigation Measures Chapter 3 - Cumulative Impacts, Chapter 4 List of Preparers, Chapter 5 List of Technical Studies and Bibliography, Appendices
	SON-116 Roadway Rehabilitation Sebastopol-Cotati Inital Study with Proposed Negative Declaration/Environmental Assessment with Programmatic 4(f) Evaluation -- November 2007 Title Page, General Information, Summary, Proposed Negative Declaration, Table of Contents Chapter 1 - Proposed Project Chapter 2 - Human Environment Chapter 3 - Physical Environment Chapter 4 - Temporary and Cumulative Impacts - Chapter 5 - Relationship Between the National Environmental Policy Act (NEPA) and CEQA - Chapter 6 - Coordination - Chapter 7 - List of Preparers - Chapter 8 - Distribution List Appendices A-E Appendices F-I
	Archaeology of a San Francisco Neighborhood Archaeologists work to uncover a San Francisco neighborhood, and learn about the people who lived there.
	State Route 4 Median Buffer Zone Project: Initial Study with Proposed Negative Declaration Initial Study r4_envornmental_document \| 2MB r4_appendix_e_project_maps \| 2MB
	State Route 84 Expressway Widening Project ALAMEDA COUNTY, CALIFORNIA DISTRICT 04 - ALA - 84, PM 22.5/27.3 EA 297600 Initial Study with Proposed Negative Declaration \| 13MB
	Sonoma 101 HOV Widening and Improvements Project Old Redwood Highway, Petaluma to Rohnert Park Expressway, Rohnert Park Environmental Assessment/Final Environmental Impact Report (EA/FEIR) front_matter summary chapter_1 chapter_2 chapter_3_sec_1 chapter_3_sec_2_11 chapter_3_sec_12_16 chapter_4 chapter_5 chapter_6 chapter_7 chapter_8 chapter_9 chapter_10 appendix_a appendix_b appendix_c appendix_d appendix_e appendix_f appendix_g appendix_h appendix_i appendix_j appendix_k appendix_l
	Interstate 80 High-Occupancy Vehicle Lane Project The Department of Transportation (Department) has prepared this Initial Study, which examines the potential environmental impacts of the alternatives being considered for the proposed project located inand near the city of Fairfield, Solano County, California. Initial Study/Proposed Mitigated Negative Declaration (31MB)
	Sonoma 101 HOV Widening and Improvements Project Steele Lane, Santa Rosa to Windsor Road, Windsor Environmental Assessment/Final Environmental Impact Report (EA/FEIR)
	The North Connector Project Presented by Chapter Below: 1_purpose_and_need.pdf 2_1human_environment.pdf 2_2community_impacts.pdf 2_3utilities_emergency_services.pdf 2_4traffic.pdf 2_5visual_aesthetics.pdf 2_6cultural_resources.pdf 2_7hydrology.pdf 2_8water_quality.pdf 2_9geology_soils_seismic_topography.pdf 2_10air_quality.pdf 2_11hazardous_waste_materials.pdf 2_12noise.pdf 2_13biological_envioronment.pdf 2_14_4_f_resources.pdf 2_15cumulative_impacts.pdf 3_comments_coordination.pdf 4_list_of_preparers.pdf 5_distribution_list.pdf appendix_a_ceqa_checklist.pdf appendix_b_title_vi_policy_statement.pdf appendix_c_summary_of_relocation_benefits.pdf appendix_d_minimization_and_or_mitigation_summary.pdf appendix_e_list_of_technical_studies_and_references.pdf appendix_f_sta_letter_in_support_of_alignment_et3.pdf appendix_g_alternatives_considered.pdf appendix_h_section_106.pdf appendix_i.pdf cover_and_preface.pdf table_of_contents.pdf
	Environmental Assessment/ Initial Study I-580 Eastbound HOV Lane Project Presented by Chapter Below: front_matter chapters_1_to_5 appendix_a appendices_b_to_f
	Interstate 680/State Route 4 Interchange Improvement Project Draft Environmental Assessment (Complete 33MB) Presented by Chapter Below: 01 01_cover_and_front_matter.pdf 02 02_chapter_1.pdf 03 03_chapter_2.pdf 04 04_chapter_3.pdf 05 05_chapter_4.pdf 06 06_chapter_5.pdf 07 07_chapter_6.pdf 08 08_appendix_a.pdf 09 09_appendix_b.pdf 10 10_appendix_c.pdf 11 11_appendix_d.pdf 12 12_appendix_e.pdf 13 13_appendix_f.pdf 13 14_appendix_g.pdf 13 15_appendix_h.pdf 13 16_appendix_i.pdf
	I-580/Castro Valley Interchange Project I-580/Castro Valley Interchange Project - Initial Study / Environmental Assessment June, 2006 (9MB)
	Caldecott Tunnel Caldecott Improvement Project Draft EA/EIR
	SFOBB Maintenance Complex SFOBB Maintenance Complex Project, replace and reconstruct existing maintenance facilities located at the San Francisco &ampmacr; Oakland Bay Bridge (SFOBB) toll plaza area (1.5MB)
	Uvas Creek Bridge Replacement This project would replace the existing scour damaged Uvas Creek Bridge (Bridge number 37-47) on Route 152 west of the City of Gilroy in Santa Clara County California. Two alignment options are being considered: immediately north or immediately south of the existing bridge, which would be demolished. Initial Study
	Interstate 680 Interstate 680 High Occupancy Vehicle &amp Auxiliary Lanes, Sunol Grade Northbound \| Initial Study and Environmental Assessment Initial Study (25MB)
	Route 12 Arnold Drive Curve Realignment and Trinity Road Intersection Improvements in Sonoma County Initial Study (2MB) Arnold Drive Cross Sections (5MB)
	Route 84 Safety Improvement Project in Niles Canyon Route 84 Safety Improvement Project in Niles Canyon Notice Environmental Document (12MB)
	Duhig Road Rehabilitation and Curve Realignment Project Part 1 \| 5MB Part 2 \| 1MB
	Initial Study for the SON-116 Stage Gulch Road project All segments 1-3 MB each, except Full Document: 01 Full Document \| 16MB 02 Cover, General Information, Title Page, Draft Mitigated Negative Declaration, and Table of Contents 03 Chapter 1 04 Chapter 2 05 Chapter 3-6 06 Appendix Sheet A1 07 Appendix Sheet A2 08 Appendix Sheet A3 09 Appendix Sheet A4 10 Appendix Sheet A5 11 Appendix Sheet A6
	Rte 4 (East) Widening Project Loveridge Road to State Route 160 Draft Environmental Assessment / Initial Study
	Rte 84 Realignment &amp widening in Alameda County Initial Study/Environmental Assessment, State Route 84 (Vallecitos Road), Pigeon Pass in Alameda County 04-ALA-KP 33.3137.0, (PM 20.7123.0), 04- 17 2400, April 2005
	Interstate 880/State Route 92 Interchange Reconstruction Project Final Environmental Impact Statement The Devil's Slide Project Devils Slide Draft Environmental Document. 1999
	Interstate 80 High Occupancy Vehicle Lane Gap Closure Project Draft EA-IS Figure 3.13-1 Figure 1-2a Figure 1-2b Figure 1-2c Figure 1-2d Figure 1-2e Figure 1-2f Figure 1-2g Figure 1-1 Figure 3.13-2 Figure 3.13-3 Figure 3.13-4 Figure 3.13-5 Appendices
	Patterson Slough Bridge Deck Draft Mitigated Negative Declaration/Initial Study for the Patterson Slough Bridge Deck Rehabilitation Project \| 4.3MB Final Environmental Impact Statement
	Support Documents for East Spans Replacement Environmental Document (PDF Files below Recoded 10/21/04 ) Marine Mammal Report Appendix C Appendix D Fisheries Report
	Route 238 Hayward Bypass Route 238 Hayward Bypass Final Environmental Impact Statement - text only (html) Vol i Vol ii Vol iii
	Route 13 Route 13 Vegetation Management Project - finding of no significant impact
	Route 37 Route 37 (Vallejo) Environmental Document
	Route 101 Marin 101 HOV Lane Gap Closure Final Environmental Impact Statement/Report Marin 101 HOV Lane Gap Closure Record of Decision Sonoma County Route 101 Initial Study/Environmental Assessment Route 101 Widening project from Route 12 in to Steele Lane Interchange in Santa Rosa Route101 Auxiliary Lanes Project 3rd Avenue to Millbrae Ave San Mateo County \| Complete Document 22MB
	State Route 152 Initial Study / Environmental Assessment - Safety Improvement Project on State Route 152 in Santa Clara County
	Route 92 Route 92 Uphill Slow Vehicle Lane and /Safety Improvements & Initial Study and Environmental Assessment &
	Wilfred Avenue Interchange Project Negative Declaration/Finding of No Significant Impact (November 2006-Final Document). Public comment period for this project is closed Cover, Table of Contents, and Declarations Chapter 1 - Proposed Project Chapter 2 - Affected Environment, Environmental Consequences, Avoidance, Minimization, and/or Mitigation Measures Chapter 3 - Biological Environment Chapter 4 - Comments and Coordination Chapter 5 - List of Preparers Appendices A through F - CEQA Checklist, Cumulative Effects, Title VI Policy Statement, Local Road and Intersection Reconfigurations, Growth Inducement Study, Environmental Justice Study Appendices G through J - US Fish and Wildlife Service Biological Opinion, Agency Consulation and Coordination, List of Technical Studies, Other Documents Referenced

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Caltrans District 4 Environmental Documents