## MEMORANDUM

TO: Steam Electric Point Source Category ELG Rulemaking Record

FROM: Jill Lucy , ERG

DATE: September 2 8

, 2015

SUBJECT: Supporting Documentation for Summarization of Environmental Assessment

Analyses (DCN SE0 4449 )

ERG supported t he 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) discharg e practices and potential improvement s associated with the r egulatory 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 Elec tric 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 Q uantitative Assessment

The quantitative analyses are summarized by utilizing raw data files generated from resources documen ted 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 E A 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 t o 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

c oncentrations in the water column and sediment of the immediate receiving water

and eval uate 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

conce ntrations 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 me morandum 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 SE0445 5)

– 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)

r ulemaking. 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 immediat e 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 un der the current profile are presented in the p reamble 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 Environme ntal 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 Impact s).

 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 Wat ersheds).

 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 CBI a SE04560 Final Steam EA IRW

Model

- Counts of Plants, Receiving Waters, and Plant

- Receiving Waters (CCR) (062215) Database used to determine count s 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 CBI a SE05904 Technical Development

Document for the Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category T his 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 docum ents EPA’s engineering analyses to support the ELGs including cost estimates, pollutant loadings, and non

water quality impact assessment (Section 3.2 and Appendix I of the EA Report)

. No

SE05620 Final Steam EA Loads

Model (CCR) ( 0505 15) 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

SE 0 5 622 Final Steam EA Loads

Model (CPP) ( 05051 5) Part of the environmental assessment national scale model. This CBI database contains the receiving water load s 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 rulemaking s (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 d etails. 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 B ay 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 CBI a SE04549A1 Final Steam EA Proximity

Analysis

– Drinking Water (CCR) (051215) Database used to identify the plants in the f inal 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 mod ule 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 f inal 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 account s 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 Receiv ing 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 rulemaking s ( 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 Sect ion 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 acc ounts for the CCR rulemaking [ Section 6.1, Section 6.2.1 , Section 7.2.3, Section 7.2.4, S ection 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 CBI a 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 Nati onal

- 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; a nd 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 ecolo gical 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 a nd 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 post

processing of the model outputs (Section 8.2.1 of the EA Report). No

SE04555 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 C CR 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 F inal Steam EA IRW

Model

- Wildlife and Human H ealth Module

– Option A (CCR) (050815) Database used to quantify potentia l 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 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 F inal Steam EA IRW

Model

- Wildlife and Human H ealth Module

– Option C (CCR) (050815) Database used to quantify potential impacts to aquatic life, wildlife, and human health in the immediate disch arge 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 CBI a SE04555A4 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 F inal Steam EA IRW

Model

- Wildlife and Human H ealth Module

- Baseline (CPP) (061815) Database used to quantify potential impacts to aquatic life, wildlife, and human hea lth 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 rulemaking s (Appendix I of the EA Report). Yes

SE04571A1 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 rulemaking s [ Appendix I (Table I

- 25 ) of the EA Report ]. Yes

SE04571A2 F inal Steam EA IRW

Model

- Wildlife and Human H ealth Module

– Option B (CPP) (061815) Database used to quantify potential impacts to aquatic life, wildlife, and human health in the immediate dis charge zone under Option B . This version accounts for the CCR and CPP rulemaking s [ Appendix I (Table I

- 25 ) of the EA Report ]. Yes

SE04571A3 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 rulemaking s [ Appendix I (Table I

- 25 ) of the EA Report ]. Yes

SE04571A4 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 a nd CPP rulemaking s [ Appendix I (Table I

- 25 ) of the EA Report ]. Yes

SE04571A5 F inal Steam EA IRW

Model

- Wildlife and Human H ealth 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 rulemaking s [ Appendix I (Table I

- 25 ) of the EA Report ]. Yes

SE04558A1 Final Steam EA IRW

Model

- Wildlife and Human Health Module

- Human Hea lth 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 rulemaking s [Appendix I (Tabl e I

- 15) of the EA Report]. No

### Memorandum

September 28, 2015 Page 8

Table 1. Quantitative Analyses Record Items

DCN Title (Date) Description CBI a 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 versio n 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 E A

- 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. Gene rates 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 rulemaking s [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 water s 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 incorporatio n 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) I ndex 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

SE0559 1 Index of Supporting

Documentation for the Etowah River, GA Case Study Model (093015) I ndex 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 CBI a SE0559 2 Index of Supporting

Documentation for the Lick Creek/White River, IN Case Study Model (093015) I ndex 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

SE0559 3 Index of Supporting

Documentation for the Ohio River, WV/OH Case Study Model (093015) I ndex 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

SE0559 4 Index of Supporting

Documentation for the Mississippi River, MO/IL Case Study Model (093015) I ndex 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 Supp orting

Documentation for the Lake Sinclair, GA Case Study Model (093015) I ndex 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 base line conditions. Generates inputs for the wildlife and human health module. This version a ccounts 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 us ed 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. Gener ates 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 to tal 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 immedia te discharge zone under Option B . Generates inputs for the wi ldlife 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 Opti on 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 CBI a SE04552A4 Final Steam EA IRW

Model

- Water Quality Module

- Option D (CCR) (050615) Database used to calcu late 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 immedia te 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 dis solved receiving water concentrations and total sediment concentrations and to identify pollutant concentrations that exceed benchmarks for aquatic life and human health in the immedia te 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 Imp acts 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 CBI a
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 Methodolog y 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 CBI a
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 b een removed from the public re cor d.