Orange County Feeder Relining Project Proposed Mitigated Negative Declaration Metropolitan Report No. 1428 August 2014 The Metropolitan Water District of Southern California Proposed Mitigated Negative Declaration Orange County Feeder Relining Project For additional information regarding this document, contact: The Metropolitan Water District of Southern California Environmental Planning Team 700 North Alameda Street Los Angeles, California 90012 Ms. Brenda Marines (213) 217-7902 Ms. Malinda Stalvey (213) 217-5545 Email: [email protected] Metropolitan Water District Of Southern California Report No. 1428 August 2014 TABLE OF CONTENTS Page SECTION 1 PROPOSED PROJECT DESCRIPTION ...................................................................................... 1-1 1.1 Project Background and Purpose ............................................................................................................ 1-1 1.2 Project Location ...................................................................................................................................... 1-1 1.3 Project Description ................................................................................................................................. 1-2 1.3.1 Reach 1 ......................................................................................................................................... 1-14 1.3.2 Reach 2 ....................................................................................................................................... 1-155 1.3.3 Reach 3 ....................................................................................................................................... 1-155 1.3.4 Reach 4 ....................................................................................................................................... 1-166 1.3.5 Reach 4a ..................................................................................................................................... 1-177 1.4 Construction Characteristics ............................................................................................................... 1-177 1.6 Construction Schedule ........................................................................................................................ 1-188 1.7 Construction Best Management Practices .......................................................................................... 1-199 1.7.1 Dust Control Measures ............................................................................................................... 1-199 1.7.2 Water Quality Measures ............................................................................................................. 1-199 1.7.3 Materials and Waste Management ............................................................................................... 1-20 1.7.4 Light and Glare ............................................................................................................................ 1-21 1.8 Project Operation and Maintenance ...................................................................................................... 1-21 1.9 Surrounding Land Uses ........................................................................................................................ 1-21 1.10 Public Agencies Whose Approval May Be Required for Subsequent Actions .................................. 1-22 SECTION 2 INITIAL STUDY .............................................................................................................................. 2-1 2.1 Introduction ............................................................................................................................................. 2-1 2.2 Draft Initial Study and Environmental Checklist Form .......................................................................... 2-1 2.3 Environmental Factors Potentially Affected .......................................................................................... 2-2 2.4 Determination ......................................................................................................................................... 2-2 SECTION 3 EVALUATION OF ENVIRONMENTAL IMPACTS .................................................................. 3-1 I. Aesthetics .................................................................................................................................................. 3-1 II. Agricultural Resources ............................................................................................................................. 3-5 III. Air Quality .............................................................................................................................................. 3-7 IV. Biological Resources ............................................................................................................................ 3-14 V. Cultural Resources ................................................................................................................................. 3-20 VI. Geology and Soils ................................................................................................................................. 3-23 VII. Greenhouse Gas Emissions ................................................................................................................. 3-27 VIII. Hazards and Hazardous Materials ..................................................................................................... 3-30 IX. Hydrology and Water Quality .............................................................................................................. 3-40 X. Land Use and Planning .......................................................................................................................... 3-46 XI. Mineral Resources ................................................................................................................................ 3-49 XII. Noise ................................................................................................................................................... 3-50 XIII. Population and Housing ..................................................................................................................... 3-60 XIV. Public Services .................................................................................................................................... 3-62 XV. Recreation ........................................................................................................................................... 3-66 XVI. Transportation/Traffic ....................................................................................................................... 3-68 XVII. Utilities and Service Systems ........................................................................................................... 3-75 XVIII. Mandatory Findings of Significance ............................................................................................... 3-78 SECTION 4 MITIGATION MEASURES ............................................................................................................ 4-1 SECTION 5 REFERENCES .................................................................................................................................. 5-1 SECTION 6 LIST OF PREPARERS .................................................................................................................... 6-1 6.1 The Metropolitan Water District of Southern California ....................................................................... 6-1 6.2 ICF .......................................................................................................................................................... 6-1 Appendix A Site Photos Appendix B Air Quality Resources Orange County Feeder Relining Project August 2014 Proposed Mitigated Negative Declaration Page i The Metropolitan Water District of Southern California TABLES Page Table 1-1 Construction Details ....................................................................................................... 1-12 Table 1-2 Construction Phasing by Reach ...................................................................................... 1-14 Table 1-3 Potential Construction Storage Area Locations* ........................................................... 1-18 Table 1-4 Permitted Construction Activity Hours .......................................................................... 1-19 Table 1-5 Surrounding Land Uses .................................................................................................. 1-22 Table III-1 Attainment Status for the Orange County Portion of the Basin ....................................... 3-9 Table III-2 Estimated Regional Construction Emissions .................................................................. 3-11 Table III-3 Estimated Localized Construction Emissions ................................................................ 3-11 Table V-1 Sites Recorded along Pipeline ........................................................................................ 3-21 Table VII-1 Estimated Construction GHG Emissions ....................................................................... 3-28 Table VIII-1 Active Environmental Cleanup Sites Adjacent to the Project Area ............................... 3-32 Table VIII-2 Existing School Facilities ..............................................................................................