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TO:	Steam Electric Rulemaking Record
	
FROM:	Ryan Novak, ERG

DATE:	September 30, 2015

SUBJECT:	Index for Supporting Documentation for the Ohio River, WV/OH Case Study Model (DCN SE05593)

This document serves as the index for the supporting documentation for the Ohio River, WV/OH Case Study Model, developed as part of the Environmental Assessment for the Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category (EA Report), Document No. EPA-821-R-15-006 (DCN SE04527). The supporting documentation for this case study includes the files listed in Table 1.
 Table 1. Supporting Documentation for the Ohio River, WV/OH Case Study Model
                                 Attachment ID
                                 Document Name
                               Brief Description
                                      A1
Attachment 1: Pollutant Loadings and Design Workbook - SE05593A1
Documentation of the modeling scope, design, steam electric power plant loadings, STORET monitoring data, and DMR/TRI point source loadings evaluated for the Ohio River, WV/OH case study model. Refer to the `ReadMe' tab of the workbook for additional information about the contents of each tab.
                                      A2
Attachment 2: WASP Model Input and Output Files - SE05593A2
These files represent the WASP model input and output files for the Ohio River, WV/OH case study model. The WASP input file (.wif) for each pollutant and scenario represents the settings and inputs used to execute case study modeling. The output data represent the daily water column and sediment concentrations in each segment of the WASP model, for each pollutant, for baseline and each regulatory option.
                                      A3
Attachment 3: Water Quality Benchmark Exceedance Analysis - SE05593A3
The water quality analysis for the Ohio River, WV/OH case study model. These results were generated by running a script on the raw WASP model output (see Attachment 2). The output from this script indicates the percent of daily average concentrations that each segment exceeded the water quality benchmarks and CSCL sediment benchmarks evaluated in the EA.
                                      A4
Attachment 4: Wildlife and Human Health Impacts Analysis - SE05593A4
The wildlife and human health analysis for the Ohio River, WV/OH case study model. This workbook includes the annual average water column concentration output, generated by the WASP model, that were evaluated against the threshold concentrations determined to trigger wildlife or human health benchmark exceedances.

