Environmental Assessment for the Town of Chino Valley, Arizona Municipal Water System Improvement Project U.S. Environmental Protection Agency Region 9 75 Hawthorne Street San Francisco, California 94105 November 2016 Page intentionally left blank Environmental Assessment, Town of Chino Valley, AZ Municipal Water System Improvement Yavapai County, AZ Contents ACRONYMS ............................................................................................................................. iv PROPOSED PROJECT AND FUNDING STATUS ............................................... 1 1. Project Purpose and Need ........................................................................................... 1 Public Health Concerns and Inadequate System or System Components .................................. 1 2. Project Description ...................................................................................................... 1 Project Summary .......................................................................................................................... 1 Planning Area Description ............................................................................................................ 4 Planning Period ............................................................................................................................. 4 Description of Project Construction Phases ................................................................................. 6 Owner and Operator of the Facilities ............................................................................................ 6 Location of the Facilities ............................................................................................................... 6 3. Relevant Design Parameters ....................................................................................... 6 4. Project Cost ................................................................................................................. 6 Proposed Total Project Cost ......................................................................................................... 6 Portion of Total Project Cost Funded by the U.S. Environmental Protection Agency (EPA) ....... 6 EXISTING DRINKING WATER SYSTEM.............................................................. 8 1. Description of Distribution System ............................................................................... 8 2. Water Demand: Average, Peak ................................................................................... 8 3. Surface Water Source ................................................................................................. 8 4. Ground Water Source .................................................................................................. 8 5. Water Storage ............................................................................................................. 8 6. Raw Water Characteristics .......................................................................................... 8 7. Service Area ................................................................................................................ 8 NEED FOR PROPOSED PROJECT ................................................................... 10 1. Description of Need ....................................................................................................10 ANALYSIS OF ALTERNATIVES ........................................................................ 11 1. No Action ....................................................................................................................11 2. New Construction Alternatives ....................................................................................11 3. Preferred Alternative ...................................................................................................11 EXISTING ENVIRONMENT, ENVIRONMENTAL CONSEQUENCES, AND MITIGATION MEASURES .................................................................................. 12 1. Existing Environment ..................................................................................................12 Public Health Problems Due to Water Quality ............................................................................12 Water Quality Problems .............................................................................................................. 12 Surface & Ground Water Hydrology ........................................................................................... 12 Drinking Water Sources and Supply ........................................................................................... 14 November 2016 Page i Environmental Assessment, Town of Chino Valley, AZ Municipal Water System Improvement Yavapai County, AZ Physiography, Topography, Geology & Soils .............................................................................14 Federally Endangered & Threatened Species ............................................................................ 17 Archeological and Architectural Cultural Resources .................................................................. 19 Air Quality ................................................................................................................................... 20 Environmental Justice Information .............................................................................................. 21 Conditions, Minority & Low Income Areas (include median family income) ...............................21 Land Use & Development, Percent Impervious Cover, Pollutant Sources.................................22 Identification of Floodplains and Wetlands ................................................................................. 23 2. Direct Impacts ............................................................................................................23 3. Secondary Impacts of Future Growth and Development .............................................23 4. Cumulative Impacts ....................................................................................................23 5. No-Action Alternative ..................................................................................................32 6. Unavoidable Adverse Impacts ....................................................................................32 7. Minimization of Adverse Impacts ................................................................................32 8. Mitigation ....................................................................................................................32 9. Cross-cutter Environmental Laws and Coordination and Consultation Process ..........32 Archeological and Historic Preservation Act ...............................................................................32 Clean Air Act ............................................................................................................................... 32 Coastal Barrier Resources Act ................................................................................................... 33 Coastal Zone Management Act .................................................................................................. 33 Endangered Species Act ............................................................................................................ 33 Environmental Justice ................................................................................................................. 33 Floodplain Management ............................................................................................................. 33 Protection of Wetlands ................................................................................................................ 33 Farmland Protection Policy Act ................................................................................................... 33 Fish and Wildlife Coordination Act .............................................................................................. 33 National Historic Preservation Act .............................................................................................. 33 Safe Drinking Water Act ............................................................................................................. 34 Wild and Scenic Rivers Act ......................................................................................................... 34 Essential Fish Habitat ................................................................................................................. 34 REFERENCES.....................................................................................................36 November 2016 Page ii Environmental Assessment, Town of Chino Valley, AZ Municipal Water System Improvement Yavapai County, AZ List of Figures Figure 1. General Location ......................................................................................................... 2 Figure 2. Project Details ............................................................................................................. 3 Figure 3. Graphic Representation of a Branched Distribution System (Left) and a Looped Distribution System (Right)......................................................................................................... 4 Figure 4. Production, Storage, and Pressure Facility No. 1 ........................................................ 5 Figure 5. Production, Storage, and Pressure Facility No. 2 .......................................................