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Natural Environment Study (Minimal Impacts) <br />Table of Contents <br />SUMMARY....................................................................................................................i <br />TABLEOF CONTENTS......................................................................................................... <br />iii <br />LIST OF ABBREVIATED TERMS...................................................................................... vii <br />1. INTRODUCTION...............................................................................................................1 <br />I.I. Project History...........................................................................................................1 <br />1.1.1. Project Purpose and Need.............................................................................1 <br />1.1.1.1. Purpose.........................................................................................1 <br />1.1.1.2. Need.............................................................................................2 <br />1.2. Project Description....................................................................................................2 <br />2. STUDY METHODS...........................................................................................................8 <br />2.1. Regulatory Requirements..........................................................................................8 <br />2.1.1. Review of Jurisdiction Subject to Section 404 of the Clean Water <br />Act................................................................................................................8 <br />2.1.2. Review of Jurisdiction Subject to Section 1600 of the California <br />Fishand Game Code.....................................................................................8 <br />2.1.3. Review of Jurisdiction Subject to Section 401 of the Clean Water <br />Act................................................................................................................9 <br />2.1.4. Rivers and Harbors Act of 1899/General Bridge Act of 1946 .....................9 <br />2.1.5. Federal Endangered Species Act..................................................................9 <br />2.1.6. California Endangered Species Act..............................................................9 <br />2.1.7. Migratory Bird Treaty Act and Executive Order 13186 .............................10 <br />2.1.8. Invasive Species.........................................................................................10 <br />2.2. Studies Required......................................................................................................11 <br />2.2.1. Literature Search........................................................................................11 <br />2.2.2. Field Reviews.............................................................................................12 <br />2.2.3. Survey Methods..........................................................................................12 <br />2.2.3.1. Biological Resources Survey and Habitat Assessment ..............12 <br />2.2.3.2. Jurisdictional Delineation...........................................................13 <br />2.2.3.3. Daytime Bat Habitat Suitability Assessment .............................13 <br />2.2.3.4. Nighttime Bat Emergence Survey..............................................13 <br />2.3. Personnel and Survey Dates....................................................................................14 <br />2.4. Agency Coordination and Professional Contacts....................................................14 <br />2.5. Limitations That May Influence Results.................................................................14 <br />3. RESULTS: ENVIRONMENTAL SETTING...................................................................15 <br />3.1. Description of the Existing Biological and Physical Conditions .............................15 <br />3.1.1. Study Area..................................................................................................15 <br />3.1.2. Physical Conditions....................................................................................15 <br />3.1.3. Biological Conditions in the Study Area....................................................16 <br />3.1.3.1. Flood Control Channels.............................................................16 <br />3.1.3.2. Transportation............................................................................16 <br />3.1.3.3. Ornamental Landscaping............................................................16 <br />3.1.3.4. Disturbed or Barren....................................................................16 <br />3.1.4. Habitat Connectivity...................................................................................16 <br />3.1.5. Regional Species and Habitats and Natural Communities of <br />Concern.......................................................................................................17 <br />3.1.5.1. Regional Species........................................................................17 <br />3.1.5.2. Habitats......................................................................................17 <br />................................................................................................................................................ . <br />Fairview Street Improvements from 9th Street to 16th Street and Bridge Replacement Project iii <br />