MEMORANDUM

TO: Steam Electric Point Source Category ELG Rulemaking Record 

FROM: Jill Lucy, ERG

DATE: September 28, 2015

SUBJECT: Supporting Documentation for Summarization of Environmental Assessment

Analyses (DCN SE04449)

ERG supported the U.S. Environmental Protection Agency (EPA) in the development of 

final effluent limitations guidelines and standards (ELGs) for the Steam Electric Power 

Generating Point Source Category (40 CFR Part 423). ERG completed environmental 

assessment (EA) analyses to evaluate environmental and human health impacts under current 

(i.e., baseline) discharge practices and potential improvements associated with the regulatory 

options (Options A, B, C, D, and E).

1 The results of these analyses are presented in 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). In support of the development of revised ELGs, ERG developed resources 

to summarize results of the following EA analyses:

 Quantitative assessment of water quality impacts and potential impacts to wildlife and 

human receptors.

 Literature review, including documentation of environmental impacts from steam 

electric power plant wastewater discharges and summary of damage cases.

1.1 Quantitative Assessment

The quantitative analyses are summarized by utilizing raw data files generated from

resources documented in the following memoranda:

 Pollutant Loadings Supporting Documentation (DCN SE04515) – This memorandum 

identifies the supporting documentation used to calculate the pollutant loadings 

evaluated in the national-scale immediate receiving water (IRW) model, the case 

study models, and EA loadings analyses.

 Water Quality Module Supporting Documentation (DCN SE04451) – This 

memorandum identifies the supporting documentation used to calculate pollutant 

 

1 During development of the final rule, EPA decided not to base the final rule on Option F for existing sources due primarily to 

the high cost of that Option, particularly in light of the costs associated with other rulemakings expected to impact the steam 

electric power generating industry (see Section VIII.C.1 of the preamble). As a result, EPA chose not to conduct particular 

analyses for Option F to the same extent that it did for some of the other options considered.
Memorandum

September 28, 2015

Page 2

concentrations in the water column and sediment of the immediate receiving water 

and evaluate the impacts that receiving water concentrations pose to aquatic life and 

human health.

 Wildlife and Human Health Modules Supporting Documentation (DCN SE04552) –

This memorandum identifies the supporting documentation used to calculate pollutant 

concentrations in exposed fish populations, evaluate the potential for adverse effects 

to minks and eagles from the consumption of fish, and calculate noncancer and cancer 

risks to human populations from the consumption of fish.

 Proximity Analysis Methodology (DCN SE04448) – This memorandum identifies the 

supporting documentation used to identify the immediate receiving waters that are 

considered sensitive environments.

 Indices of supporting documentation for the case study models (DCNs SE05590 

through SE05595) – These six memorandums identify the supporting documentation 

used to perform water quality, wildlife, and human health modeling for each of the 

six case study sites.

 Ecological Risk Modeling Methodology and Supporting Documentation (DCN 

SE05572) – This memorandum identifies the supporting documentation used in the 

ecological risk modeling analysis, which focuses on aquatic wildlife impacts 

associated with dietary exposure to selenium.

 Downstream Modeling Methodology and Supporting Documentation (DCN 

SE04455) – This memorandum identifies the supporting documentation used in the 

downstream modeling analysis.

ERG performed quantitative analyses under two separate industry baseline scopes: 

1. The “With CCR” scope accounts for the Coal Combustion Residuals (CCR) 

rulemaking. See the EA Report for the results of the analyses under this scope. 

a. 222 immediate receiving waters included in the environmental assessment (195 

steam electric power plants).

b. 209 immediate receiving waters included in the IRW model used for the EA (188

steam electric power plants).

2. The “With CCR and CPP” scope accounts for both the CCR rulemaking and the 

Clean Power Plan [Clean Air Act Section 111(d)]. See Appendix I of the EA Report 

for the results of the analyses under this scope.

a. 172 immediate receiving waters included in the environmental assessment (148 

steam electric power plants). 

b. 163 immediate receiving waters included in the IRW model used for the EA (143 

steam electric power plants).
Memorandum

September 28, 2015

Page 3

The summary results of the quantitative analyses under the current profile are presented

in the preamble of the final rule (which uses the “With CCR and CPP” scope) and the following 

sections of the EA Report: 

 Section 3.2 (Loadings Associated with Steam Electric Power Plant Wastewater).

 Section 3.4 (Discharge to Sensitive Environments).

 Section 4.1.1 (Factors Controlling Environmental Impacts in Surface Waters).

 Section 4.2.1 (Factors Controlling Environmental Impacts to Ground Water).

 Section 6.1 (Water Quality Impacts).

 Section 6.2 (Wildlife Impacts).

 Section 6.3 (Human Health Impacts).

 Section 7.1 (Pollutant Removals Under the Regulatory Options).

 Section 7.2 (Key Environmental Improvements).

 Section 7.3 (Pollutant-Specific Improvements).

 Section 7.4 (Improvements to Sensitive Environments and Watersheds).

 Section 7.6 (Environmental and Human Health Improvements in Downstream 

Surface Water).

 Section 8.2 (Quantified Environmental Impacts and Improvements from Case Study 

Modeling).

 Appendix F (Overview of Ecological Risk Modeling Setup and Outputs).

 Appendix G (Overview of Case Study Modeling Setup and Outputs).

 Appendix H (Additional Model Results).

 Appendix I (Analysis for Alternate Scenario with Clean Power Plan).

Table 1 includes a comprehensive listing of the summary resources for the quantitative 

analysis. This table provides the document control number (DCN), title, and description of the 

resource, and identifies whether the record item contains Confidential Business Information 

(CBI).

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE04560 Final Steam EA IRW 

Model - Counts of Plants, 

Receiving Waters, and 

Plant-Receiving Waters 

(CCR) (062215)

Database used to determine counts of plants, immediate 

receiving waters, and plant-receiving waters in the EA 

Report and IRW model with CCR (Section 2 of the EA 

Report).

Yes

SE04576 Final Steam EA IRW 

Model - Counts of Plants, 

Receiving Waters, and 

Plant-Receiving Waters 

(CPP) (062215)

Database used to determine counts of plants, immediate 

receiving waters, and plant-receiving waters in the EA 

Report and IRW model with CCR and CPP (Appendix I of 

the EA Report).

Yes
Memorandum

September 28, 2015

Page 4

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE05904 Technical Development 

Document for the Effluent 

Limitations Guidelines and 

Standards for the Steam 

Electric Power Generating 

Point Source Category

This report includes background on the ELGs; applicability 

and summary of the ELGs; industry description; wastewater 

characterization and identifying pollutants of concern; and 

treatment technologies and pollution prevention techniques; 

and documents EPA’s engineering analyses to support the 

ELGs including cost estimates, pollutant loadings, and nonwater quality impact assessment (Section 3.2 and Appendix I 

of the EA Report).

No

SE05620 Final Steam EA Loads 

Model (CCR) (050515)

Part of the environmental assessment national scale model. 

This CBI database contains the receiving water loads 

module. This version of the loads accounts for the CCR 

rulemaking (Section 3.2 and Section 7.2 of the EA Report).

See the ERG memorandum, “Loadings Analysis for the 

Steam Electric ELGs Environmental Assessment” (DCN 

SE04446).

Yes

SE05622 Final Steam EA Loads 

Model (CPP) (050515)

Part of the environmental assessment national scale model. 

This CBI database contains the receiving water loads 

module. This version of the loads accounts for the CCR and 

CPP rulemakings (Appendix I of the EA Report). See DCN 

SE04446.

Yes

SE04464 EA Loadings Analyses 

Spreadsheet (MS Excel 

File) - with CCR (072415)

As part of the EA, ERG evaluated the environmental impact 

of pollutant loadings released under current (i.e., baseline) 

discharge practices and assessed the potential environmental 

improvement from pollutant loading removals associated 

with the regulatory options (Options A, B, C, D, and E). This 

version accounts for the CCR rulemaking (Section 3.2, 

Section 3.4.1, Section 7.2, and Section 7.4.4 of the EA 

Report). See DCN SE04446.

No

SE04473 EA Loadings Analyses 

Spreadsheet (MS Excel 

File) - with CCP (081315)

As part of the EA, ERG evaluated the environmental impact 

of pollutant loadings released under current (i.e., baseline) 

discharge practices and assessed the potential environmental 

improvement from pollutant loading removals associated 

with the regulatory options (Options A, B, C, D, and E). This 

version accounts for the CCR and CPP rulemakings

(Appendix I of the EA Report). See DCN SE04446.

No

SE04549 Final Steam EA Proximity 

Analysis – Compiled 

Proximity Data (CCR) 

(051215)

Database used to identify sensitive environments and 

compile data into the proximity input table used for the water 

quality module of the IRW model. (Section 3.4 and Section 

7.4 of the EA Report). See the ERG memorandum, 

“Proximity Analysis Methodology” (DCN SE04448), for 

further details.

Yes

SE04551 Final Steam EA Proximity 

Analysis - Great Lakes and 

Chesapeake Bay Loads 

(CCR) (051315)

Database used to calculate the pollutant loadings discharged 

from plants in the Final EA scope to the Great Lakes 

watershed or the Chesapeake Bay watershed. This version 

accounts for the CCR rulemaking (Section 3.4.1 of the EA 

Report). See DCN SE04446.

Yes
Memorandum

September 28, 2015

Page 5

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE04549A1 Final Steam EA Proximity 

Analysis – Drinking Water 

(CCR) (051215)

Database used to identify the plants in the final EA scope 

that discharge in close proximity to a drinking water intake 

or public well. The analysis is based off of the data contained 

in the National Drinking Water NHD Indexed Dataset. This 

version accounts for the CCR rulemaking (Section 3.4.6 of 

the EA Report). See DCN SE04448 for further details.

Yes

SE04565 Final Steam EA Proximity 

Analysis – Compiled 

Proximity Data (CCP) 

(061515)

Database used to identify sensitive environments and 

compile data into the proximity input table used for the water 

quality module of the IRW model. This version accounts for 

the CCR and CPP rulemakings (Appendix I of the EA 

Report). See DCN SE04448 for further details.

Yes

SE04565A1 Final Steam EA Proximity 

Analysis – Drinking Water

(CPP) (061515)

Database used to identify the plants in the final EA scope 

that discharge in close proximity to a drinking water intake 

or public well. The analysis is based off of the data contained 

in the National Drinking Water NHD Indexed Dataset. This 

version accounts for the CCR and CPP rulemakings 

(Appendix I of the EA Report). See DCN SE04448 for 

further details.

Yes

SE04567 Final Steam EA Proximity 

Analysis - Great Lakes and 

Chesapeake Bay Loads 

(CPP) (061715)

Database used to calculate the pollutant loadings discharged 

from plants in the Final EA scope to the Great Lakes 

watershed or the Chesapeake Bay watershed. This version 

accounts for the CCR and CPP rulemakings (Appendix I of 

the EA Report). See DCN SE04446.

Yes

SE04603 Final Steam EA - Counts 

of Receiving Waters by 

Type (CCR) (030215)

Spreadsheet used to categorize the immediate receiving 

waters for plants in the Final EA scope into Great Lakes, 

estuaries, rivers/streams, and lakes/ponds/reservoirs. This 

version accounts for the CCR rulemaking (Section 4.1.1 of 

the EA Report).

No

SE04607 Final Steam EA - Counts 

of Receiving Waters by 

Type (CPP)

Spreadsheet used to categorize the immediate receiving 

waters for plants in the Final EA scope into Great Lakes, 

estuaries, rivers/streams, and lakes/ponds/reservoirs. This 

version accounts for the CCR and CPP rulemakings

(Appendix I of the EA Report).

No

SE02157 Metal Concentrations in 

Leachate Analysis 

Database (071712)

Database contains leachate concentration data divided into 

three pH levels (i.e., acidic, neutral, and alkali) (Table 4-3 of 

the EA Report).

Yes

SE04600 Final Steam EA IRW 

Model - General Results 

Matrix (CCR) (071015)

Spreadsheet that summarizes the general results from the 

IRW model under baseline conditions and the regulatory 

options. This version accounts for the CCR rulemaking 

(Section 6.1, Section 6.2.1, Section 7.2.1, and Section 7.2.4 

of the EA Report).

No

SE04601 Final Steam EA IRW 

Model – Pollutant Results 

Matrix (CCR) (072215)

Spreadsheet that summarizes the pollutant-specific results 

from the IRW model under baseline conditions and the 

regulatory options. This version accounts for the CCR 

rulemaking [Section 6.1, Section 6.2.1, Section 7.2.3, 

Section 7.2.4, Section 7.3, and Appendix H (Table H-1) of 

the EA Report].

No
Memorandum

September 28, 2015

Page 6

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE04605 Final Steam EA IRW 

Model - General Results 

Matrix (CPP) (071015)

Spreadsheet that summarizes the general results from the 

immediate receiving water IRW model under baseline 

conditions and the regulatory options. This version accounts 

for the CCR and CPP rulemakings (Appendix I of the EA 

Report).

No

SE04606 Final Steam EA IRW 

Model – Pollutant Results

Matrix (CPP) (072215)

Spreadsheet that summarizes the pollutant-specific results 

from the IRW model under baseline conditions and the 

regulatory options. This version accounts for the CCR and 

CPP rulemakings (Appendix I of the EA Report).

No

SE04612 National-Scale Ecological 

Risk Modeling Files 

(CCR) (092515)

Files supporting the national-scale ecological risk modeling 

effort, including input selenium concentrations; enrichment 

factor data; trophic transfer data; Crystal Ball model files; 

model outputs; and spreadsheets used for post-processing of 

the model outputs. This version accounts for the CCR 

rulemaking (Section 6.2.2 of the EA Report).

No

SE04614 National-Scale Ecological 

Risk Modeling Files (CPP) 

(092515)

Files supporting the national-scale ecological risk modeling 

effort, including input selenium concentrations; enrichment 

factor data; trophic transfer data; Crystal Ball model files; 

model outputs; and spreadsheets used for post-processing of 

the model outputs. This version accounts for the CCR and 

CPP rulemakings (Appendix I of the EA Report).

No

SE04615 Black Creek Case Study 

Ecological Risk Modeling 

Files

Files supporting the Black Creek case study ecological risk 

modeling effort, including input selenium concentrations; 

enrichment factor data; trophic transfer data; Crystal Ball 

model files; model outputs; and spreadsheets used for postprocessing of the model outputs (Section 8.2.1 of the EA 

Report).

No

SE04555 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module -

Baseline (CCR) (050815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under baseline conditions. Generates inputs for the Fish 

Tissue Screening Level Database. This version accounts for 

the CCR rulemaking [Section 6.2.3, Section 6.3.1, Section 

6.3.2, Section 7.2.2 (Table 7-6), and Appendix H of EA 

Report].

Yes

SE04555A1 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option A (CCR) (050815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option A. This version accounts for the CCR 

rulemaking [Section 7.2.2 (Table 7-6) and Appendix H of 

EA Report].

Yes

SE04555A2 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option B (CCR) (050815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option B. This version accounts for the CCR 

rulemaking [Section 7.2.2 (Table 7-6) and Appendix H of 

EA Report].

Yes

SE04555A3 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option C (CCR) (050815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option C. This version accounts for the CCR 

rulemaking [Section 7.2.2 (Table 7-6) and Appendix H of 

EA Report].

Yes
Memorandum

September 28, 2015

Page 7

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE04555A4 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option D (CCR) (050815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option D. This version accounts for the CCR 

rulemaking [Section 7.2.2 (Table 7-6) and Appendix H of 

EA Report].

Yes

SE04555A5 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option E (CCR) (050815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option E. This version accounts for the CCR

rulemaking [Section 7.2.2 (Table 7-6) and Appendix H of 

EA Report].

Yes

SE04571 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module -

Baseline (CPP) (061815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under baseline conditions. Generates inputs for the Fish 

Tissue Screening Level Database. This version accounts for 

the CCR and CPP rulemakings (Appendix I of the EA 

Report).

Yes

SE04571A1 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option A (CPP) (061815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option A. This version accounts for the CCR and CPP 

rulemakings [Appendix I (Table I-25) of the EA Report].

Yes

SE04571A2 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option B (CPP) (061815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option B. This version accounts for the CCR and CPP 

rulemakings [Appendix I (Table I-25) of the EA Report].

Yes

SE04571A3 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option C (CPP) (061815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option C. This version accounts for the CCR and CPP 

rulemakings [Appendix I (Table I-25) of the EA Report].

Yes

SE04571A4 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option D (CPP) (061815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option D. This version accounts for the CCR and CPP 

rulemakings [Appendix I (Table I-25) of the EA Report].

Yes

SE04571A5 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module –

Option E (CPP) (061815)

Database used to quantify potential impacts to aquatic life, 

wildlife, and human health in the immediate discharge zone 

under Option E. This version accounts for the CCR and CPP 

rulemakings [Appendix I (Table I-25) of the EA Report].

Yes

SE04558A1 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module -

Human Health Summary 

Table Generator (CCR) 

(051915)

Database used to summarize the human health modeling 

results for baseline and regulatory options. This version 

accounts for the CCR rulemaking [Section 6.3.1 (Table 6-8) 

of the EA Report].

No

SE04575A1 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module -

Human Health Summary 

Table Generator (CPP)

(061815)

Database used to summarize the human health modeling 

results for baseline and regulatory options. This version 

accounts for the CCR and CPP rulemakings [Appendix I 

(Table I-15) of the EA Report].

No
Memorandum

September 28, 2015

Page 8

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE04592 Final Steam EA - EJ 

Calculations for EA Report 

(CCR) (072415)

Spreadsheet used to present the results of the Environmental 

Justice analysis in a reader-friendly format for incorporation 

into the EA Report. This version accounts for the CCR 

rulemaking (Section 6.3.2 of the EA Report).

No

SE04594 Final Steam EA - EJ 

Calculations for EA Report 

(CPP) (082015)

Spreadsheet used to present the results of the Environmental 

Justice analysis in a reader-friendly format for incorporation 

into the EA Report. This version accounts for the CCR and 

CPP rulemakings (Appendix I of the EA Report).

No

SE04591A2 Final Steam EA - EJ 

Improvement Calculations 

Part 2 (CCR) (071515)

Spreadsheet used to calculate human health improvements 

for Environmental Justice cohorts under Option D. This 

version accounts for the CCR rulemaking. There is no 

corresponding version that accounts for the CPP rulemaking.

Yes

SE04556A4 Final Steam EA IRW 

Model - Wildlife and 

Human Health Module -

Comparison Database -

Option D (CCR) (052715)

Database used to compare the wildlife and human health 

module results between baseline and Option D. Generates 

inputs for the Wildlife Summary Table Generator and the 

Human Health Summary Table Generator. This version 

accounts for the CCR rulemaking (Section 7.4 of the EA 

Report). See DCN SE04448 for further details. 

Yes

SE04604 Final Steam EA IRW 

Model - Miscellaneous 

Calculations for EA Report 

(CCR) (0930115)

Database used for miscellaneous calculations in support of 

the Final EA Report. This version accounts for the CCR 

rulemaking [Section 7 (Table 7-12) of the EA Report].

Yes

SE04608 Final Steam EA IRW 

Model - Miscellaneous 

Calculations for Preamble 

and EA Report (CPP)

(0930115)

Database used for miscellaneous calculations in support of 

the Final EA Report. This version accounts for the CCR and 

CPP rulemakings [Appendix I (Table I-31) of the EA 

Report].

Yes

SE06518 Pollutant Loadings to 

Impaired Waters (082115)

MS Excel spreadsheet that calculates the pollutant loading 

removals and percent reduction for impaired waters by 

impairment category [Section 7 (Table 7-12) and Appendix I 

(Table I-31) of the EA Report].

No

SE04585 Final Steam EA 

Downstream Model -

Results Matrix (CCR)

(071015)

Spreadsheet used to present the results of the downstream 

model in a reader-friendly format for incorporation into the 

EA Report. This version accounts for the CCR rulemaking

(Section 7.6 of the EA Report).

No

SE04589 Final Steam EA 

Downstream Model -

Results Matrix (CPP)

(081915)

Spreadsheet used to present the results of the downstream 

model in a reader-friendly format for incorporation into the 

EA Report. This version accounts for the CCR and CPP 

rulemakings (Appendix I of the EA Report).

No

SE05590 Index of Supporting 

Documentation for the 

Black Creek, MS Case 

Study Model (093015)

Index for all of the supporting documentation (e.g., model 

setup, inputs, and outputs, and ERG’s analyses based on the 

model outputs) for the Black Creek, MS case study model.

EA Report Section 8.2.1 discusses the results. 

No

SE05591 Index of Supporting 

Documentation for the 

Etowah River, GA Case 

Study Model (093015)

Index for all of the supporting documentation (e.g., model 

setup, inputs, and outputs, and ERG’s analyses based on the 

model outputs) for the Etowah River, GA case study model.

EA Report Section 8.2.2 discusses the results.

No
Memorandum

September 28, 2015

Page 9

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE05592 Index of Supporting 

Documentation for the 

Lick Creek/White River, 

IN Case Study Model

(093015)

Index for all of the supporting documentation (e.g., model 

setup, inputs, and outputs, and ERG’s analyses based on the 

model outputs) for the Lick Creek/White River, IN case 

study model. EA Report Section 8.2.3 discusses the results.

No

SE05593 Index of Supporting 

Documentation for the 

Ohio River, WV/OH Case 

Study Model (093015)

Index for all of the supporting documentation (e.g., model 

setup, inputs, and outputs, and ERG’s analyses based on the 

model outputs) for the Ohio River, WV/OH case study 

model. EA Report Section 8.2.4 discusses the results.

No

SE05594 Index of Supporting 

Documentation for the 

Mississippi River, MO/IL 

Case Study Model

(093015)

Index for all of the supporting documentation (e.g., model 

setup, inputs, and outputs, and ERG’s analyses based on the 

model outputs) for the Mississippi River, MO/IL case study 

model. EA Report Section 8.2.5 discusses the results.

No

SE05595 Index of Supporting 

Documentation for the 

Lake Sinclair, GA Case 

Study Model (093015)

Index for all of the supporting documentation (e.g., model 

setup, inputs, and outputs; ERG’s analyses based on the 

model outputs; and analysis of representativeness) for the 

Lake Sinclair, GA case study model. EA Report Section 

8.2.6 discusses the results.

No

SE04552 Final Steam EA IRW 

Model - Water Quality 

Module - Baseline (CCR)

(050615)

Database used to calculate the total and dissolved receiving 

water concentrations and total sediment concentrations and 

to identify pollutant concentrations that exceed benchmarks 

for aquatic life and human health in the immediate discharge 

zone under baseline conditions. Generates inputs for the 

wildlife and human health module. This version accounts for 

the CCR rulemaking (Appendix H of the EA Report).

Yes

SE04552A1 Final Steam EA IRW 

Model - Water Quality 

Module - Option A (CCR)

(050615)

Database used to calculate the total and dissolved receiving 

water concentrations and total sediment concentrations and 

to identify pollutant concentrations that exceed benchmarks 

for aquatic life and human health in the immediate discharge 

zone under Option A. Generates inputs for the wildlife and 

human health module. This version accounts for the CCR 

rulemaking (Appendix H of the EA Report).

Yes

SE04552A2 Final Steam EA IRW 

Model - Water Quality 

Module - Option B (CCR)

(050615)

Database used to calculate the total and dissolved receiving 

water concentrations and total sediment concentrations and 

to identify pollutant concentrations that exceed benchmarks 

for aquatic life and human health in the immediate discharge 

zone under Option B. Generates inputs for the wildlife and 

human health module. This version accounts for the CCR 

rulemaking (Appendix H of the EA Report).

Yes

SE04552A3 Final Steam EA IRW 

Model - Water Quality 

Module - Option C (CCR)

(050615)

Database used to calculate the total and dissolved receiving 

water concentrations and total sediment concentrations and 

to identify pollutant concentrations that exceed benchmarks 

for aquatic life and human health in the immediate discharge 

zone under Option C. Generates inputs for the wildlife and 

human health module. This version accounts for the CCR 

rulemaking (Appendix H of the EA Report).

Yes
Memorandum

September 28, 2015

Page 10

Table 1. Quantitative Analyses Record Items 

DCN Title (Date) Description CBIa

SE04552A4 Final Steam EA IRW 

Model - Water Quality 

Module - Option D (CCR)

(050615)

Database used to calculate the total and dissolved receiving 

water concentrations and total sediment concentrations and 

to identify pollutant concentrations that exceed benchmarks 

for aquatic life and human health in the immediate discharge 

zone under Option D. Generates inputs for the wildlife and 

human health module. This version accounts for the CCR 

rulemaking (Appendix H of the EA Report).

Yes

SE04552A5 Final Steam EA IRW 

Model - Water Quality 

Module - Option E (CCR)

(050615)

Database used to calculate the total and dissolved receiving 

water concentrations and total sediment concentrations and 

to identify pollutant concentrations that exceed benchmarks 

for aquatic life and human health in the immediate discharge 

zone under Option E. Generates inputs for the wildlife and 

human health module. This version accounts for the CCR 

rulemaking (Appendix H of the EA Report)

Yes

a – Record items containing CBI have been removed from the public record.

1.2 Literature Review

The methodology and detailed results of the literature review (including review of 

damage cases associated with steam electric power plants) are presented in Appendix A 

(Literature Review Methodology and Results) of the EA Report. The ERG memorandum 

“Revisions to Database of Damage Cases and Other Documented Site Impacts Since Proposal” 

(DCN SE04516) describes the damage case additions and updates since the proposed 

rulemaking. The summary results of the literature review are presented in the following sections 

of the EA Report:

 Section 3.3 (Environmental Impacts from Steam Electric Power Plant Wastewater).

 Section 3.5 (Long Environmental Recovery Times Associated with Pollutants in 

Steam Electric Power Plant Wastewater).

 Section 6.2.2 (Impacts to Fish and Waterfowl due to Dietary Selenium Exposure).

 Section 7.7 (Attractive Nuisances).

 Section 9 (Conclusions).

Table 1-2 presents a comprehensive listing of the literature review summary 

documentation. 

Table 1-2. Literature Review Summary Record Items

DCN Title Abstract CBIa

SE01962 Literature Search Database Database that contains a full listing of the resources EPA 

collected and/or reviewed over the course of the Environmental 

Assessment analysis. Also contains queries that generate the 

counts and listings presented in Appendix A (Literature Review 

Methodology and Results) and other portions of the EA Report.

No
Memorandum

September 28, 2015

Page 11

Table 1-2. Literature Review Summary Record Items

DCN Title Abstract CBIa

SE04518 Database of Damage Cases 

and Other Documented Site 

Impacts from Pollutants in 

Combustion Residuals and 

Steam Electric Power Plant 

Wastewater

Database that contains a full listing of the potential and proven 

damage cases according to EPA's damage case assessment for the 

final Coal Combustion Residuals rulemaking, plus additional 

documented site impacts from steam electric power plants 

identified in literature. Also contains queries that generate the 

counts and listings presented in Appendix A (Literature Review 

Methodology and Results) and other portions of the EA Report.

No

a – Record items containing CBI have been removed from the public record.