BUREAU OF RECLAMATION YUMA COUNTY AIRPORT AUTHORITY ENVIRONMENTAL ASSESSMENT ADOT GRANT NO.E5S2Z Draft Report ROLLE AIRFIELD SAN LUIS, ARIZONA | FEBRUARY 2017 DRAFT Environmental Assessment Rolle Airfield San Luis, Arizona Prepared for: United States Department of the Interior Bureau of Reclamation Yuma Area Office 7301 Calle Agua Salada Yuma, Arizona 85364 Prepared by: Armstrong Consultants, Inc. 2345 S. Alma School Road Mesa, Arizona 85210 In associated with: The Genesis Consulting Group, LLC SWCA Environmental Consultants, Inc. Yuma County Airport Authority ADOT Grant Number: E5S2Z February 2017 | version 1.0 Yuma County Airport Authority 2191 East 32nd street Yuma, Arizona | 85365 Environmental Assessment Rolle Airfield February 2017 Version 1.0 This environmental assessment has been prepared in accordance with provisions and requirements of Title 40 Code of Federal Regulations Parts 1500 et seq. relating to the implementation of the National Environmental Policy Act of 1969. Table of Contents TABLE OF CONTENTS Chapter 1.0 Introduction .......................................................................................................................................... 1-1 1.1 Need for the Proposed Action .................................................................................................................... 1-1 1.2 Purpose of the Proposed Action................................................................................................................. 1-3 Chapter 2.0 Description of the Proposed Action and Alternatives ................................................................... 2-1 2.1 History and Location .................................................................................................................................... 2-1 2.2 Alternatives Considered in Detail ............................................................................................................... 2-3 2.2.1 No-Action Alternative ............................................................................................................................. 2-3 2.2.2 Proposed Action ....................................................................................................................................... 2-3 2.3 Conclusion ...................................................................................................................................................... 2-7 Chapter 3.0 Affected Environment and Environmental Consequences .......................................................... 3-1 3.1 Aesthetics ........................................................................................................................................................ 3-1 3.1.1 Affected Environment ............................................................................................................................. 3-1 3.1.2 Environmental Consequences/Impacts ................................................................................................ 3-2 3.1.2-1 No Action ......................................................................................................................................... 3-2 3.1.2-2 Proposed Action .............................................................................................................................. 3-2 3.1.3 Management and Mitigation Measures .................................................................................................. 3-2 3.1.4 Best Management Practices ..................................................................................................................... 3-2 3.2 Air Quality ...................................................................................................................................................... 3-3 3.2.1 Affected Environment ............................................................................................................................. 3-3 3.2.2 Environmental Consequences ............................................................................................................. 3-10 3.2.2-1 No Action ...................................................................................................................................... 3-10 3.2.2-2 Proposed Action ........................................................................................................................... 3-10 3.2.3 Management and Mitigation Measures ............................................................................................... 3-13 3.2.4 Best Management Practices ................................................................................................................. 3-14 3.3 Biological Resources .................................................................................................................................. 3-14 3.3.1 Affected Environment .......................................................................................................................... 3-14 3.3.2 Environmental Consequences ............................................................................................................. 3-22 3.3.2-1 No Action ...................................................................................................................................... 3-22 3.3.2-2 Proposed Action ........................................................................................................................... 3-23 3.3.3 Management and Mitigation Measures ............................................................................................... 3-29 3.3.4 Best Management Practices .................................................................................................................. 3-30 3.4 Cultural/Historic Resources ..................................................................................................................... 3-31 3.4.1 Affected Environment .......................................................................................................................... 3-31 3.4.2 Environmental Consequences/Impacts ............................................................................................. 3-32 3.4.2-1 No Action ...................................................................................................................................... 3-32 3.4.2-2 Proposed Action ........................................................................................................................... 3-32 3.4.3 Management and Mitigation Measures ............................................................................................... 3-32 3.4.4 Best Management Practices .................................................................................................................. 3-32 3.5 Geology and Soils ....................................................................................................................................... 3-32 3.5.1 Affected Environment .......................................................................................................................... 3-32 3.5.2 Environmental Consequences/Impacts ............................................................................................. 3-33 3.5.2-1 No Action ...................................................................................................................................... 3-33 3.5.2-2 Proposed Action ........................................................................................................................... 3-33 Rolle Airfield – Environmental Assessment i Table of Contents 3.5.3 Management and Mitigation Measures ............................................................................................... 3-33 3.5.4 Best Management Practices .................................................................................................................. 3-33 3.6 Hazardous and Solid Waste ...................................................................................................................... 3-33 3.6.1 Affected Environment .......................................................................................................................... 3-33 3.6.2 Environmental Consequences/Impacts ............................................................................................. 3-34 3.6.2-1 No Action ...................................................................................................................................... 3-34 3.6.2-2 Proposed Action ........................................................................................................................... 3-34 3.6.3 Management and Mitigation Measures ............................................................................................... 3-34 3.6.4 Best Management Practices .................................................................................................................. 3-34 3.7 Water Resources ......................................................................................................................................... 3-34 3.7.1 Affected Environment .......................................................................................................................... 3-34 3.7.2 Environmental Consequences/Impacts ............................................................................................. 3-35 3.7.2-1 No Action .....................................................................................................................................