FINAL ENVIRONMENTAL IMPACT REPORT VOLUME II SACRAMENTO COUNTY GENERAL PLAN UPDATE Control Number: 2002-GPB-0105 State Clearinghouse Number: 2007082086 April 2010 COUNTY OF SACRAMENTO DEPARTMENT OF ENVIRONMENTAL REVIEW AND ASSESSMENT 827 7TH STREET, ROOM 220 SACRAMENTO, CALIFORNIA 95814 TABLE OF CONTENTS 11 AIR QUALITY........................................................................................................11-1 INTRODUCTION..........................................................................................................11-1 SETTING...................................................................................................................11-1 REGULATORY SETTING............................................................................................11-16 SIGNIFICANCE CRITERIA ..........................................................................................11-30 METHODOLOGY ......................................................................................................11-32 IMPACTS AND ANALYSIS .........................................................................................11-73 NO PROJECT ALTERNATIVE ................................................................................... 11-103 ALTERNATIVE 1: REMOVE GRANT LINE EAST.......................................................... 11-106 ALTERNATIVE 2: FOCUSED GROWTH...................................................................... 11-109 ALTERNATIVE 3: MIXED USE.................................................................................. 11-112 ARTERIAL DOWNGRADE AND THOROUGHFARE DOWNGRADE ................................... 11-115 12 CLIMATE CHANGE ..............................................................................................12-1 INTRODUCTION TO CLIMATE CHANGE AND GLOBAL WARMING......................................12-1 WORLDWIDE, NATIONAL AND STATEWIDE EMISSIONS ..................................................12-3 EMISSIONS THRESHOLDS ..........................................................................................12-5 STATE OF CALIFORNIA EMISSION REDUCTION/ADAPTATION STRATEGIES......................12-8 SACRAMENTO COUNTY EMISSION REDUCTION EFFORTS............................................12-10 IMPACTS AND MITIGATION MEASURES ......................................................................12-15 CEQA ALTERNATIVES ............................................................................................12-41 13 GEOLOGY AND SOILS ........................................................................................13-1 INTRODUCTION..........................................................................................................13-1 ENVIRONMENTAL SETTING.........................................................................................13-1 REGULATORY SETTING............................................................................................13-21 SIGNIFICANCE CRITERIA ..........................................................................................13-23 METHODOLOGY ......................................................................................................13-24 IMPACTS AND ANALYSIS ..........................................................................................13-24 NO PROJECT ALTERNATIVE .....................................................................................13-35 ALTERNATIVE 1: REMOVE GRANT LINE EAST............................................................13-35 ALTERNATIVE 2: FOCUSED GROWTH........................................................................13-36 TOC - 1 Table Of Contents ALTERNATIVE 3: MIXED USE....................................................................................13-36 14 HAZARDOUS MATERIALS..................................................................................14-1 INTRODUCTION..........................................................................................................14-1 ENVIRONMENTAL SETTING.........................................................................................14-2 REGULATORY SETTING............................................................................................14-11 SIGNIFICANCE CRITERIA ..........................................................................................14-12 METHODOLOGY ......................................................................................................14-13 IMPACTS AND ANALYSIS .........................................................................................14-13 NO PROJECT ALTERNATIVE .....................................................................................14-17 ALTERNATIVE 1: REMOVE GRANT LINE EAST ...........................................................14-18 ALTERNATIVE 2: FOCUSED GROWTH .......................................................................14-19 ALTERNATIVE 3: MIXED USE...................................................................................14-20 15 CULTURAL AND PALEONTOLOGICAL RESOURCES ......................................15-1 INTRODUCTION..........................................................................................................15-1 CULTURAL RESOURCES SETTING...............................................................................15-3 PALEONTOLOGICAL RESOURCES BACKGROUND .......................................................15-13 CULTURAL REGULATORY SETTING ...........................................................................15-15 PALEONTOLOGY REGULATORY SETTING...................................................................15-19 PROPOSED AND EXISTING POLICY FOR MANAGEMENT OF CULTURAL RESOURCES WITHIN THE SACRAMENTO COUNTY GENERAL PLAN.............................................................15-19 PROPOSED AND EXISTING POLICY FOR MANAGEMENT OF PALEONTOLOGICAL RESOURCES WITHIN THE SACRAMENTO COUNTY GENERAL PLAN .................................................15-19 SIGNIFICANCE CRITERIA: CULTURAL RESOURCES .....................................................15-20 SIGNIFICANCE CRITERIA: PALEONTOLOGICAL RESOURCES........................................15-21 METHODOLOGY ......................................................................................................15-22 IMPACTS AND ANALYSIS: CULTURAL RESOURCES ....................................................15-22 NO PROJECT ALTERNATIVE: CULTURAL RESOURCES................................................15-31 REMOVE GRANT LINE EAST ALTERNATIVE: CULTURAL RESOURCES ..........................15-32 FOCUSED GROWTH ALTERNATIVE: CULTURAL RESOURCES.......................................15-32 MIXED USE ALTERNATIVE: CULTURAL RESOURCES ..................................................15-32 IMPACTS AND ANALYSIS: PALEONTOLOGICAL RESOURCES .......................................15-33 NO PROJECT ALTERNATIVE: PALEONTOLOGICAL RESOURCES...................................15-34 REMOVE GRANT LINE EAST: PALEONTOLOGICAL RESOURCES...................................15-34 TOC - 2 Table Of Contents FOCUSED GROWTH: PALEONTOLOGICAL RESOURCES...............................................15-35 MIXED USE ALTERNATIVE: PALEONTOLOGICAL RESOURCES .....................................15-35 16 AESTHETICS........................................................................................................16-1 INTRODUCTION..........................................................................................................16-1 EXISTING SETTING ....................................................................................................16-1 REGULATORY SETTING............................................................................................16-11 SIGNIFICANCE CRITERIA ..........................................................................................16-18 METHODOLOGY ......................................................................................................16-18 IMPACTS AND ANALYSIS ..........................................................................................16-19 NO PROJECT ALTERNATIVE .....................................................................................16-21 ALTERNATIVE 1: REMOVE GRANT LINE EAST ...........................................................16-23 ALTERNATIVE 2: FOCUSED GROWTH .......................................................................16-24 ALTERNATIVE 3: MIXED USE...................................................................................16-25 17 SUMMARY OF IMPACTS AND THEIR DISPOSITION .........................................17-1 SIGNIFICANT EFFECTS WHICH CANNOT BE AVOIDED ...................................................17-1 SIGNIFICANT EFFECTS WHICH COULD BE AVOIDED WITH IMPLEMENTATION OF MITIGATION MEASURES...............................................................................................................17-9 EFFECTS FOUND NOT TO BE SIGNIFICANT.................................................................17-10 IRREVERSIBLE ENVIRONMENTAL CHANGES ...............................................................17-14 GROWTH INDUCING IMPACTS ...................................................................................17-16 18 SUMMARY OF CEQA ALTERNATIVES...............................................................18-1 LAND USE ................................................................................................................18-1 PUBLIC SERVICES.....................................................................................................18-4