Document Type: Supplemental EA- Administrative Record Index Field: Environmental Assessment Project Name: Bottom Ash Process Dewatering Facility SEA – Permanent Flow Management System Project Number: 2018-25 GALLATIN FOSSIL PLANT BOTTOM ASH PROCESS DEWATERING FACILITY PERMANENT FLOW MANAGEMENT SYSTEM FINAL SUPPLEMENTAL ENVIRONMENTAL ASSESSMENT Sumner County, Tennessee Prepared by: TENNESSEE VALLEY AUTHORITY Chattanooga, Tennessee December 2019 To request further information, contact: Ashley R. Farless, PE, AICP NEPA Compliance Tennessee Valley Authority 1101 Market Street Chattanooga, TN 37402 E-mail:
[email protected] This page intentionally left blank Table of Contents Table of Contents CHAPTER 1 - PURPOSE OF AND NEED FOR ACTION ......................................................... 1-1 1.1 Introduction and Background ......................................................................................... 1-1 1.2 Purpose and Need ......................................................................................................... 1-4 1.3 Decision to be Made ...................................................................................................... 1-4 1.4 Related Environmental Reviews and Consultation Requirements ................................. 1-4 1.5 Scope of this Analysis .................................................................................................... 1-4 1.6 Public and Agency Involvement ..................................................................................... 1-5 1.7 Necessary