State Clearinghouse No.: 2013051082 Draft Program EIR (Distributed): July 23, 2014 Final EIR (Certified): February 24, 2015 City of Chino Hills Final Program EIR General Plan Update Preface This document is the Final Environmental Impact Report (EIR) for the City of Chino Hills General Plan Update. It incorporates the Draft EIR and minor revisions made to the Draft EIR in Responses to Comments received on the EIR during the public review process. Other minor corrections to the Draft EIR that have been identified by City staff also are incorporated into the Final EIR. In accordance with §15132 of the CEQA Guidelines, the Final EIR also contains in Attachment A: • Comments and recommendations received on the Draft EIR; • List of persons, organizations, and public agencies commenting on the Draft EIR. • Responses of the City, as Lead Agency, to significant environmental points raised in the review and consultation process. Attachment B of the Final EIR contains the Mitigation Monitoring Program (MMP) for the City of Chino Hills General Plan Update. page i City of Chino Hills Final Program EIR General Plan Update Contents Executive Summary ................................................................................................................................... 1 1. Summary Project Description .................................................................................................. 1 2. Summary of Project Alternatives ............................................................................................. 3 3. Summary Classification of Environmental Impacts ................................................................... 3 4. Areas of Controversy .............................................................................................................. 3 5. Issues to be Resolved ............................................................................................................. 5 6. Summary of Impacts and Mitigation Measures ........................................................................ 6 7. Matrix of Mitigation Measures ................................................................................................. 7 Chapter 1. Introduction ........................................................................................................................ 1-1 1.1 Purpose .............................................................................................................................. 1-1 1.2 Scope of the EIR .................................................................................................................. 1-2 1.3 Lead Agency ....................................................................................................................... 1-3 1.4 Intended Uses of the EIR ..................................................................................................... 1-3 1.5 EIR Process ......................................................................................................................... 1-4 1.6 Mitigation Monitoring Program ........................................................................................... 1-4 1.7 Document Organization ...................................................................................................... 1-4 Chapter 2. Project Description .............................................................................................................. 2-1 2.1 Project Location .................................................................................................................. 2-1 2.2 Project Background ............................................................................................................. 2-1 2.3 Statement of Objectives ...................................................................................................... 2-2 2.4 Project Components ........................................................................................................... 2-3 2.5 General Plan Update Goals .................................................................................................. 2-5 2.6 General Plan Update Land Use and Circulation Plans ........................................................... 2-6 2.7 Zoning Map ...................................................................................................................... 2-13 2.8 Public Actions and Approvals Required ............................................................................. 2-13 Chapter 3. Existing Setting ................................................................................................................... 3-1 3.1 Existing General Plan .......................................................................................................... 3-1 3.2 Existing Land Uses .............................................................................................................. 3-3 3.3 Existing Zoning Map ........................................................................................................... 3-3 3.4 Existing Transportation ...................................................................................................... 3-6 3.5 Existing Infrastructure ........................................................................................................ 3-6 3.6 Existing Geology and Seismicity .......................................................................................... 3-6 3.7 Existing Biological Resources .............................................................................................. 3-6 3.8 Existing Cultural Resources................................................................................................. 3-7 3.9 Cumulative Impacts Setting ................................................................................................. 3-8 Chapter 4. Environmental Setting, Impacts, and Mitigation Measures .................................................... 4-1 4.1 Land Use and Planning ........................................................................................................ 4-1 4.2 Aesthetics ......................................................................................................................... 4-23 4.3 Air Quality ........................................................................................................................ 4-31 4.4 Biological Resources ......................................................................................................... 4-47 4.5 Cultural Resources ............................................................................................................ 4-69 4.6 Geology and Soils ............................................................................................................. 4-83 4.7 Greenhouse Gases and Climate Change .......................................................................... 4-107 4.8 Hazards and Hazardous Materials ................................................................................... 4-129 page i City of Chino Hills Final Program EIR General Plan Update 4.9 Hydrology and Water Quality ........................................................................................... 4-147 4.10 Noise .............................................................................................................................. 4-167 4.11 Population and Housing .................................................................................................. 4-187 4.12 Public Services ................................................................................................................ 4-193 4.13 Recreation ...................................................................................................................... 4-205 4.14 Transportation/Traffic .................................................................................................... 4-209 4.15 Utilities and Service Systems ........................................................................................... 4-249 Chapter 5. Alternatives ......................................................................................................................... 5-1 5.1 Purpose and Scope ............................................................................................................. 5-1 5.2 Project Objectives ............................................................................................................... 5-1 5.3 Alternatives Considered and Withdrawn from Further Consideration ................................... 5-2 5.4 Alternatives Analysis ........................................................................................................... 5-4 5.5 Environmentally Superior Alternative................................................................................. 5-11 Chapter 6. Other CEQA Considerations ................................................................................................. 6-1 6.1 Significant Irreversible Environmental Changes ................................................................... 6-1 6.2 Growth Inducing Effects ...................................................................................................... 6-2 6.3 Significant and Unavoidable Impacts ................................................................................... 6-3 6.4 Energy Conservation ........................................................................................................... 6-6 6.5 Effects Found Not to be Significant