DRAFT Initial Study Shady View Residential Project June 2021 Lead Agency: City of Chino Hills 14000 City Center Drive Chino Hills, CA 91709 Prepared by: HELIX Environmental Planning, Inc. 16485 Laguna Canyon Road, Suite 150 Irvine, CA 92618 Draft Initial Study Shady View Residential Project THIS PAGE INTENTIONALLY LEFT BLANK Draft Initial Study Shady View Residential Project TABLE OF CONTENTS Executive Summary .............................................................................................................................................................................. 1 SECTION 1.0 Background ...................................................................................................................................................... 1-1 1.1 Summary ............................................................................................................................................................ 1-1 1.2 CEQA Process .................................................................................................................................................. 1-1 1.3 Existing Conditions and Surrounding Land Uses .............................................................................. 1-3 SECTION 2.0 Project Description ........................................................................................................................................ 2-1 2.1 Project Characteristics .................................................................................................................................. 2-1 2.2 Project Construction ..................................................................................................................................... 2-6 2.3 Regulatory Requirements, Permits, and Approvals .......................................................................... 2-7 2.4 Consultation With California Native American Tribe(s) .................................................................. 2-8 SECTION 3.0 Environmental Factors Potentially Affected and Determination ................................................. 3-1 3.1 Environmental Factors Potentially Affected......................................................................................... 3-1 SECTION 4.0 Environmental Checklist and Discussion .............................................................................................. 4-1 4.1 Aesthetics .......................................................................................................................................................... 4-1 4.2 Agriculture and Forestry Resources ........................................................................................................ 4-4 4.3 Air Quality ......................................................................................................................................................... 4-6 4.4 Biological Resources ................................................................................................................................... 4-10 4.5 Cultural Resources ....................................................................................................................................... 4-13 4.6 Energy ............................................................................................................................................................... 4-15 4.7 Geology and Soils ........................................................................................................................................ 4-17 4.8 Greenhouse Gas Emissions ...................................................................................................................... 4-21 4.9 Hazards and Hazardous Materials ......................................................................................................... 4-23 4.10 Hydrology and Water Quality ................................................................................................................. 4-27 4.11 Land Use and Planning .............................................................................................................................. 4-31 4.12 Mineral Resources ........................................................................................................................................ 4-32 4.13 Noise ................................................................................................................................................................. 4-33 4.14 Population and Housing ........................................................................................................................... 4-36 4.15 Public Services ............................................................................................................................................... 4-37 4.16 Recreation ....................................................................................................................................................... 4-39 4.17 Transportation ............................................................................................................................................... 4-40 4.18 Tribal Cultural Resources .......................................................................................................................... 4-42 4.19 Utilities and Service Systems ................................................................................................................... 4-44 4.20 Wildfire ............................................................................................................................................................. 4-47 4.21 Mandatory Findings of Significance ..................................................................................................... 4-49 Draft Initial Study Shady View Residential Project SECTION 5.0 List of Preparers .............................................................................................................................................. 5-1 5.1 City of Chino Hills ........................................................................................................................................... 5-1 5.2 HELIX Environmental Planning, Inc. ........................................................................................................ 5-1 SECTION 6.0 Bibliography ..................................................................................................................................................... 6-1 LIST OF TABLES Table 1. Project Site and Surrounding Land Uses .................................................................................................... 1-4 Table 2. Residential Dwelling Unit Floor Plan Summary ....................................................................................... 2-2 Table 3. Architectural Themes ......................................................................................................................................... 2-3 LIST OF FIGURES Figure 1. Regional Location .................................................................................................................................................. iv Figure 2. USGS Topography .................................................................................................................................................. v Figure 3. Aerial Photograph ................................................................................................................................................. vi Figure 4. Existing Oil Facilities on the Project Site ................................................................................................... 1-6 Figure 5. Existing Oil Operations .................................................................................................................................... 1-7 Figure 6. General Plan Land Use Designations ......................................................................................................... 1-8 Figure 7. Zoning .................................................................................................................................................................... 1-9 Figure 8. Site Plan ................................................................................................................................................................. 2-9 Figure 9. Proposed Tank Site ......................................................................................................................................... 2-10 Figure 10. Proposed Tank Details................................................................................................................................. 2-11 Figure 11. Tank Access Routes ...................................................................................................................................... 2-12 Figure 12. Connection with Existing Streets ............................................................................................................. 2-13 ACRONYMS AND ABBREVIATIONS AB Assembly Bill AF Acre-feet amsl Above mean sea level APN Assessor’s Parcel Number AQMP Air Quality Management Plan Basin South Coast Air Basin bbl Barrel (oil barrel) BMPs Best Management Practices Draft Initial Study Shady View Residential Project Caltrans California Department of Transportation CALFIRE California Department of Forestry and Fire Protection CARB California Air Resources Board CBC California Building Code CCR California Code of