DRAFT ENVIRONMENTAL IMPACT REPORT GAVILAN COLLEGE – COYOTE CAMPUS PROJECT SCH No. 2007122006 FEBRUARY 2008 TABLE OF CONTENTS SUMMARY..........................................................................................................................................iv 1.0 INTRODUCTION .....................................................................................................................1 1.1 INTRODUCTION OVERVIEW ....................................................................................1 1.2 PROJECT LOCATION ..................................................................................................1 1.3 REFERENCE AVAILABILITY ....................................................................................1 2.0 DESCRIPTION OF THE PROPOSED PROJECT ...................................................................2 2.1 OVERVIEW ...................................................................................................................2 2.2 PROJECT DESCRIPTION.............................................................................................2 2.3 PROJECT OBJECTIVES .............................................................................................13 2.4 USES OF THE EIR.......................................................................................................13 2.5 CONSISTENCY WITH ADOPTED PLANS AND POLICIES ..................................14 3.0 ENVIRONMENTAL SETTING, IMPACTS, AND MITIGATION ......................................18 3.1 LAND USE...................................................................................................................18 3.2 TRANSPORTATION...................................................................................................22 3.3 AIR QUALITY.............................................................................................................44 3.4 NOISE...........................................................................................................................56 3.5 HAZARDOUS MATERIALS ......................................................................................63 3.6 GEOLOGY, SOILS AND SEISMICITY .....................................................................65 3.7 HYDROLOGY, DRAINAGE AND WATER QUALITY...........................................70 3.8 BIOLOGICAL RESOURCES ......................................................................................83 3.9 CULTURAL RESOURCES .........................................................................................99 3.10 VISUAL AND AESTHETIC RESOURCES .............................................................102 3.11 PUBLIC SERVICES ..................................................................................................107 3.12 WATER SUPPLY AND UTILITIES AND SERVICE SYSTEMS...........................110 3.13 ENERGY RESOURCES ............................................................................................115 4.0 CUMULATIVE IMPACTS...................................................................................................120 5.0 ALTERNATIVES TO THE PROPOSED PROJECT ..........................................................142 5.1 NO PROJECT ALTERNATIVE ................................................................................144 5.2 REDUCED SCALE ALTERNATIVE .......................................................................145 5.3 LOCATION ALTERNATIVE ...................................................................................146 5.4 ENVIRONMENTALLY SUPERIOR ALTERNATIVE............................................149 6.0 GROWTH INDUCING IMPACTS.......................................................................................151 7.0 SIGNIFICANT UNAVOIDABLE IMPACTS ......................................................................152 8.0 SIGNIFICANT IRREVERSIBLE ENVIRONMENTAL CHANGES..................................153 9.0 REFERENCES ......................................................................................................................154 10.0 LEAD AGENCY AND CONSULTANTS............................................................................155 Coyote Campus Master Plan Draft EIR Gavilan Joint Community College District i February 2008 Table of Contents FIGURES Figure 1: Regional Map....................................................................................................................3 Figure 2: Vicinity Map .....................................................................................................................4 Figure 3: Aerial Map ........................................................................................................................5 Figure 4: Gavilan College District Boundary...................................................................................6 Figure 5: Conceptual Master Plan ....................................................................................................8 Figure 6: Cross-sections and Elevations...........................................................................................9 Figure 7: Phase I Conceptual Plan..................................................................................................12 Figure 8: Roadway Network...........................................................................................................23 Figure 9: Noise Measurement Locations........................................................................................58 Figure 10: Existing FEMA Floodplain.............................................................................................71 Figure 11: 100-Year Floodplain Work Map – Master Site Plan.......................................................74 Figure 12: 100-Year Floodplain Work Map – Phase 1.....................................................................75 Figure 13: Biotic Habitats.................................................................................................................84 Figure 14: Biological Impact Map....................................................................................................91 Figure 15: Existing and Proposed Utility Connections ..................................................................112 Figure 16: Cumulative Projects Location Map...............................................................................121 Figure 17: Alternative Site Locations.............................................................................................148 TABLES Table 1: Proposed Land Use Areas..............................................................................................2 Table 2 Building Square Footage................................................................................................7 Table 3: Signalized Intersection Level of Service Definitions Based on Delay ........................25 Table 4: Freeway Level of Service ............................................................................................26 Table 5: Existing Intersection Levels of Service .......................................................................26 Table 6: Mixed Flow-Lanes: Existing Freeway Segment Levels of Service.............................28 Table 7: Background Intersection Levels of Service .................................................................31 Table 8: Project Trip Generation Estimates ...............................................................................35 Table 9: Project Intersection Levels of Service (Without CVRP) .............................................36 Table 10: Project Intersection Levels of Service (With Partial CVRP).......................................37 Table 11: Project Intersection Levels of Service (With Full Buildout of CVRP)........................39 Table 12: Project Conditions Freeway Segment Levels of Service .............................................41 Table 13: Ambient Air Quality Standards....................................................................................45 Table 14: Major Criteria Pollutants..............................................................................................46 Table 15: Annual Number of Days Exceeding Ambient Air Quality Standards .........................49 Table 16: Existing Daily Project Emissions in Pounds Per Day..................................................51 Table 17: Predicted 8-Hour CO Concentrations with Project......................................................52 Table 18: Acreage Summary of On-Site Habitats........................................................................83 Table 19: List of Cumulative Projects........................................................................................120 Table 20: Cumulative Intersection Levels of Service ................................................................124 Table 21: Consistency of Project with Applicable State of California ......................................132 Climate Change Emission Reduction Strategies........................................................132 Table 22: Day-Night Average Noise Levels at Long-Term Measurement Sites .......................135 Table 23: Matrix Comparison of Project Alternative Impacts...................................................150 Coyote Campus Master Plan Draft EIR Gavilan Joint Community College District ii February 2008 Table of Contents PHOTOS Photo 1: View from Santa Teresa Hills looking east across the project site.. .............................103 Photo 2: View