Preparing for Closure of the John Sevier Fossil Plant: Re-Routing of the Bottom Ash Pond Outfall Driven by NPDES Requirements

摘要

The Tennessee Valley Authority (TVA) retired two coal-fired units and idled two units at the John Sevier Fossil Plant at the end of 2012. TVA and Stantec teamed to develop a closure strategy for the closure of coal combustion product (CCP) disposal facilities and ancillary structures, including the Bottom Ash Pond (BAP). In Tennessee, closure is defined as taking the actions at the termination of a disposal operation that are necessary to finally close the disposal facility. As with many regulatory agencies, the Tennessee Department of Environment and Conservation (TDEC) does not have specific regulations relative to closure of non-hazardous wastewater impoundments and has not developed formal closure and post-closure guidelines for impoundments.