environmental assessment us border patrol, tucson sector

12345678910111213141516171819202122232425262728293031323334353637383940414243TABLE OF CONTENTSEXECUTIVE SUMMARY .................................................................................................... ES-11.0 INTRODUCTION ......................................................................................................... 1-11.1 BACKGROUND ................................................................................................. 1-11.2 STUDY LOCATION ........................................................................................... 1-11.3 PURPOSE AND NEED ....................................................................................... 1-31.4 REGULATORY AUTHORITY .......................................................................... 1-31.5 PUBLIC INVOLVEMENT ................................................................................. 1-31.6 SCOPE OF THE ANALYSIS ............................................................................. 1-51.7 APPLICABLE ENVIRONMENTAL GUIDANCE, STATUTES, ANDREGULATIONS.................................................................................................. 1-61.8 REPORT ORGANIZATION ............................................................................... 1-62.0 PROPOSED ACTION AND ALTERNATIVES ........................................................ 2-12.1 PROPOSED ACTION ......................................................................................... 2-12.2 ALTERNATIVES CONSIDERED ..................................................................... 2-42.3 NO ACTION ALTERNATIVE ........................................................................... 2-52.4 PREFERRED ALTERNATIVE .......................................................................... 2-52.5 ALTERNATIVE 2 ............................................................................................... 2-52.6 ALTERNATIVE 3 ............................................................................................... 2-82.7 ALTERNATIVE 4 ............................................................................................... 2-82.8 SUMMARY ....................................................................................................... 2-113.0 AFFECTED ENVIRONMENT AND CONSEQUENCES ........................................ 3-13.1 PRELIMINARY IMPACT SCOPING ................................................................ 3-13.2 LAND USE .......................................................................................................... 3-23.2.1 Affected Environment .............................................................................. 3-23.2.1.1 Preferred Alternative ................................................................. 3-23.2.1.2 Alternative 2.............................................................................. 3-23.2.1.3 Alternative 3.............................................................................. 3-33.2.1.4 Alternative 4.............................................................................. 3-33.2.2 Environmental Consequences .................................................................. 3-33.2.2.1 No Action Alternative ............................................................... 3-33.2.2.2 Preferred Alternative ................................................................. 3-33.2.2.3 Alternative 2.............................................................................. 3-33.2.2.4 Alternative 3.............................................................................. 3-33.2.2.5 Alternative 4.............................................................................. 3-33.3 SOILS .................................................................................................................. 3-43.3.1 Affected Environment .............................................................................. 3-43.3.1.1 Preferred Alternative ................................................................. 3-43.3.1.2 Alternative 2.............................................................................. 3-43.3.1.3 Alternative 3.............................................................................. 3-43.3.1.4 Alternative 4.............................................................................. 3-43.3.2 Environmental Consequences .................................................................. 3-6Douglas FOB EADraftAugust 2011