Development of FGD Costs and Loads Input Table - 

Current FGD Systems

No data

This Excel file contains the following worksheets:

Table of Contents

Table of Systems

Field List

Current Wet FGD Sys. - Raw Data

Planned Wet FGD Sys. - Raw Data

SE Unit IDs

SE_Operating_Unit

Fuel Usage

Coal Burned

Type of Coal

ST Capacity

Electric Generation

Cl_Concentrations

Coal Burned per day

All Current Sys. Coal and Purge

Coal Burned and GPD by System

Purge vs. Coal (Type of System)

Log Purge vs. Coal (System)

GPD per Ton of Bar (All)

GPD per Ton Bar (All)

Coal and GPD with Ox Type

Purge vs Coal (Oxid Type)

Coal and GPD with Coal Type

Purge vs. Coal (Type of Coal)

This Excel workbook documents the analyses conducted by EPA to find a methodology to estimate the FGD wastewater flow f

current wet FGD systems that did not report a flow rate in the Steam Electric Survey.

The FGD input table holds the FGD wastewater flow generated by all plants discharging FGD wastewater to surface waters or 

POTW. All plants currently discharging or planning to discharge wastewater by January 1, 2014 are included in this input tabl

all plants are included in the costs and loadings analysis. For plants identifying a current wet FGD system in the Steam Electri

Survey, EPA took the FGD purge flow sent to treatment or discharbed from question B5-2 as the FGD wastewater flow to incl

in the FGD input table. For plants that did not report a flow rate, EPA needed to develop a methodology to estimate this flow. 

file documents the various analyses conducted to determine specific plant characteristics that best correlated to FGD purge flow

This worksheet lists all of the tabs and provides a short explanation of what informatio

data can be found on each. See this tab for further information on the tabs listed below

Key to Highlighted Cells Throughout File:

Missing or Incomplete Data (Includes a -111 or -999)

Data used in Costs Methodology
GPD per Ton with Coal Type

GPD per ton with Ox Type

Purge and ST_Cap.

ST Capacity vs. Purge (System)

ST Cap. Vs Purge (Coal Type)

Log ST Cap. Vs Purge (Coal)

ST_Cap vs Purge (Oxid Type)

Purge and Generation

Generation vs Purge (System)

Generation vs Purge (Coal Type)

Generation vs. Purge (Oxid Type)

Purge and Cl_Concentration

Cl_Conc. Vs Purge (System)

Cl_Conc vs Purge (Coal Type)

Tons per day vs. Capacity

Ton per day vs Cap. (Coal Type)
te the FGD wastewater flow for 

astewater to surface waters or a 

are included in this input table as 

D system in the Steam Electric 

FGD wastewater flow to include 

dology to estimate this flow. This 

 correlated to FGD purge flow.

planation of what information and 

ation on the tabs listed below.

des a -111 or -999)
Tab Name

Table of Systems

Field List

Current Wet FGD Sys. - Raw Data

Planned Wet FGD Sys. - Raw Data 

SE Unit IDs

SE_Operating_Unit

Fuel Usage

Coal Burned 

Type of Coal

ST_Capacity

Electric Generation

Cl_Concentrations

All Current Sys. Coal and Purge

Coal burned and GPD by System

Purge vs. Coal (Type of System)

Log Purge vs. Coal (System)

GPD per Ton for Bar (All)

GPD per Ton Bar (All)

Coal and GPD with Ox Type

Purge vs. Coal (Oxid Type)

Coal and GPD with Coal Type

Purge vs. Coal (Type of Coal)

GPD per Ton with Coal Type

GPD per Ton with Oxid Type

Purge and ST_Cap.

ST Capacity vs. Purge (System)

ST Cap. Vs. Purge (Coal Type)

Log ST Cap. Vs. Purge (Coal)

ST_Cap vs Purge (Oxid Type)

Purge and Generation

Generation vs Purge (System)

Generation vs Purge (Coal Type)

Generation vs Purge (Oxid Typ)

Purge and Cl_Concentration

Cl_Conc. Vs Purge (System)

Cl_Conc. Vs Purge (Coal Type)
Description

Table of current and planned wet FGD systems.

List of table and field names used to analyze FGD scrubber purge flow.

Raw data from the database for all current wet FGD systems. This table includes data from the FGD_Systems and FGD_Wet_

Raw data from the database for all planned wet FGD systems. This table includes data from only the FGD_Systems table of th

Data from the FGD_Systems table of the database, used to assign SE Unit IDs to each FGD system.

all plant IDs identified as having an FGD system servicing SE Unit-1. Group 2 is all plant IDs identified as 

having an FGD system servicing SE Unit-2 and so on.

Data from the Fuel Usage table in the database. This data is broken up based on SE Unit ID and includes amount and types of 

Calculates total coal burned per FGD system and determines what types of coal are burned by SE Unit within a given FGD Sys

Determines the type of coal burned on an FGD Unit basis.

Determines the total steam turbine capacity for each FGD system, uses data from the SE_Operating_Unit table in the database

Determines the total 2009 electric generation for each FGD system, uses data from the SE_Operating_Unit table in the databas

Raw data from the FGD_Wet_General table of the database with plant ID, FGD Unit ID and WFGD_bd_chlor_ppm.

capacity, 2009 generation, oxidation type, absorber type, purge rate in gpd, and gpd/ton of coal values for each 

FGD system.

Data table for scatter plot of Purge Rate vs. Amount of Coal Burned based on absorber type.

Scatter plot of Purge Rate vs. Amount of Coal Burned based on absorber type.

Scatter plot of Purge Rate vs. Amount of Coal Burned based on absorber type on a log scale.

Data table for the bar graph of GPD of scrubber purge/ton of coal.

Bar graph of GPD of scrubber purge/ton of coal.

Data tables for scatter plot of Purge Rate vs. Amount of Coal Burned based on oxidation type.

Scatter plot of Purge Rate vs. Amount of Coal Burned based on oxidation type.

Data tables for scatter plot of Purge Rate vs. Amount of Coal Burned based on type of coal burned.

Scatter plot of Purge Rate vs. Amount of Coal Burned based on type of coal burned.

Data tables and bar graphs of GPD of scrubber purge/ton of coal based on type of coal burned.

Data tables and bar graphs of GPD of scrubber purge/ton of coal based on type oxidation type.

down the spreadsheet, the first set is broken into subsets based on absorber type. The second set is based on type 

of coal burned and the third set is based on oxidation type.)

Scatter plot of Purge Rate vs. Steam Turbine Capacity based on absorber type.

Scatter plot of Purge Rate vs. Steam Turbine Capacity based on type of coal burned.

Scatter plot of Purge Rate vs. Steam Turbine Capacity based on type of coal burned on a log scale.

Scatter plot of Purge Rate vs. Steam Turbine Capacity based on type of oxidation.

down the spreadsheet, the first set is broken subsets based on absorber type. The second set is based on type of 

coal burned and the third set is based on oxidation type.)

Scatter plot of Purge Rate vs. 2009 Electric Generation based on absorber type.

Scatter plot of Purge Rate vs. 2009 Electric Generation based on type of coal burned.

Scatter plot of Purge Rate vs. 2009 Electric Generation based on oxidation type.

Scrolling down the spreadsheet, the first set is broken into subsets based on absorber type and the second set is 

based on type of coal burned.)

Scatter plot of Purge Rate vs. Blowdown Chlorine concentrations based on absorber type.

Scatter plot of Purge Rate vs. Blowdown Chlorine concentrations based on type of coal burned.
ystems and FGD_Wet_Water_Gen tables of the database.

GD_Systems table of the database.

es amount and types of coal burned by each SE Unit.

within a given FGD System.

nit table in the database.

Unit table in the database.

d_chlor_ppm.
No GPD 

or GPM

Only 

GPD

Only 

GPM

Both GPD 

and GPM

Total Number of Wet FGD Systems Reported 311

Current Systems 263 46 8 4 205

Began operating sometime in 2009 36 3 0 0 33

Began operating sometime in 2010 19 1 0 0 18

Planned Systems 48

Online by 1/1/2014 33

Online after 1/1/2014 11

No Date 4

Yes No

Type of Oxidation (Wet FGD Systems only) 311 59 50

Forced Oxidation

Current 180 17 30

Planned 42

Inhibited Oxidation

Current 33 20 10

Planned 1

Natural Oxidation

Current 46 21 8

Planned 3

Not Applicable

Current 4 1 2

Planned 0

No Answer

Current 0 0 0

Planned 2

17

1

Flow Data Available

No Answer or 

Blank

Is a cementitious/pozzolanic 

material produced? (B4-15)

202

133

42

3

0

2

3

1

0
Table Name Field Name

FGD_Systems FGD_seunit (all)

FGD_oxidation

FGD_slurry

FGD_Wet_Water_Gen WFGD_absorb_type

WFGD_purge_WWTS_gpd

WFGD_purge_WWTS_gpm

FGD_Wet_General WFGD_bd_chlor_ppm

Fuel_Usage fuel_coal_*_amt

SE_Units_Operating_ 2009_generation

ST_capacity
Notes

SE Unit ID identification

Type of Oxidation (Forced, Natural, or Inhibited)

Used to identify if the FGD System is a wet (answered "Yes") or dry (answered 

"No") system

Type of wet FGD absorber

Scrubber purge flow rate in GPD

Scrubber purge flow rate in GPM

Chloride concentration maintained less than - ppm

Used amount of each type of coal burned

The total unit electric generation in 2009 (MW-hrs).

The steam turbine capacity (MW).
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used to estimate F

purge flow is considered CBI or CBI deducible.
anitization. All data used to estimate FGD 
plant_id FGD_id cbi_FGD_tbl FGD_online_date FGD_slurry

771 FGD-B FALSE 5/1/2011 Yes

771 FGD-A FALSE 1/1/2012 Yes

1185 FGD-A FALSE 7/1/2011 Yes

1185 FGD-B FALSE 7/1/2011 Yes

1245 FGD-A FALSE 1/1/2013 Yes

1245 FGD-B FALSE 1/1/2012 Yes

1493 FGD-A FALSE 4/1/2011 Yes

1634 FGD-A FALSE 6/1/2015 Yes

1634 FGD-B FALSE 6/1/2015 Yes

1674 FGD-A FALSE 10/1/2010 Yes

2079 FGD-C FALSE 4/1/2012 Yes

2079 FGD-A FALSE 9/1/2010 Yes

2482 FGD-B FALSE 5/1/2015 Yes

2482 FGD-A FALSE 12/1/2014 Yes

3095 FGD-A FALSE 10/1/2011 Yes

3265 FGD-A FALSE 1/1/2012 Yes

3709 FGD-A FALSE 12/1/2011 Yes

3709 FGD-B FALSE 4/1/2012 Yes

3719 FGD-A FALSE 6/1/2013 Yes

3719 FGD-B FALSE 6/1/2013 Yes

4017 FGD-B FALSE 10/1/2014 Yes

4017 FGD-A FALSE 4/1/2015 Yes

4533 FGD-A FALSE 9/10/1899 Yes

4533 FGD-B FALSE 9/10/1899 Yes

4679 FGD-A FALSE 5/1/2011 Yes

5318 FGD-B FALSE 12:00:00 AM Yes

5318 FGD-A TRUE [Redacted] [Redacted]

5762 FGD-A FALSE 12/1/2014 Yes

5762 FGD-B FALSE 12/1/2013 Yes

6334 FGD-B FALSE 6/1/2012 Yes

6334 FGD-A FALSE 5/1/2011 Yes

6370 FGD-A FALSE 12/1/2014 Yes

6622 FGD-A FALSE 11/1/2011 Yes

7256 FGD-A FALSE 4/1/2011 Yes

8013 FGD-A FALSE 3/1/2011 Yes

8013 FGD-B FALSE 3/1/2011 Yes

8179 FGD-D FALSE 05/2012 Yes

8179 FGD-A FALSE 01/2014 Yes

8179 FGD-C TRUE [Redacted] [Redacted]

8179 FGD-B FALSE 05/2013 Yes

8902 FGD-A FALSE 9/1/2010 Yes

8902 FGD-B FALSE 9/1/2010 Yes

9161 FGD-A FALSE 1/1/2011 Yes

9166 FGD-A FALSE 4/1/2011 Yes

9412 FGD-A FALSE 1/1/2014 Yes

9412 FGD-B FALSE 1/1/2016 Yes
9948 FGD-A FALSE 6/1/2010 Yes

9971 FGD-A TRUE [Redacted] [Redacted]
FGD_oxidation FGD_type

Forced oxidation Jet bubbling reactor

Forced oxidation Jet bubbling reactor

Forced oxidation Spray/Tray

Forced oxidation Spray/Tray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Inhibited oxidation Spray/Tray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray/Tray

Forced oxidation Jet bubbling reactor

Forced oxidation Spray/Tray

Forced oxidation Spray/Tray

Forced oxidation Spray

Forced oxidation Spray

Natural oxidation Spray

Natural oxidation Spray

No Answer No Answer

No Answer No Answer

Forced oxidation Spray/Tray

Forced oxidation Jet bubbling reactor

[Redacted] [Redacted]

Forced oxidation Jet bubbling reactor

Forced oxidation Jet bubbling reactor

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Jet bubbling reactor

Forced oxidation Spray

Forced oxidation Spray/Tray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

[Redacted] [Redacted]

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray

Forced oxidation Spray/Tray

Natural oxidation Spray

Forced oxidation Spray

Forced oxidation Spray
Forced oxidation Spray/Tray

[Redacted] [Redacted]
All plant-level data has been removed from this tab as a result of CBI sanitization. All 

data used to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used to estimate F

CBI or CBI deducible.
All data used to estimate FGD purge flow is considered 
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used to estimate F
anitization. All data used to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All data 

used to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used 

to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All 

data used to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used to 

estimate FGD purge flow is considered CBI or CBI deducible.
*Same value reported for ST capacity and generation
All data used to 
All plant-level data has been removed from this tab as a result of CBI sanitization. All data 

used to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All 

data used to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used 

to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All 

data used to estimate FGD purge flow is considered CBI or CBI deducible.




All plant-level data has been removed from this tab as a result of CBI sanitization. All data 

used to estimate FGD purge flow is considered CBI or CBI deducible.


All plant-level data has been removed from this tab as a result of CBI sanitization. All data used 

to estimate FGD purge flow is considered CBI or CBI deducible.



1731 FGD-1 Recirculation 4413600 Natural oxidation 173581


All plant-level data has been removed from this tab as a result of CBI sanitization. All data 

used to estimate FGD purge flow is considered CBI or CBI deducible.


Bituminous Coal Purge Rate per Amount of Coal Burned (GPD/Ton)

min 0.00116838

max 1.874427421

avg 0.214289769

median 0.145413952

Blend Coal Purge Rate per Amount of Coal Burned (GPD/Ton)

min 0.001527915

max 1.084905197

avg 0.150649057

median 0.101730087

All plant-level data has been removed from this tab as a result of CBI sanitization. All data used to 

estimate FGD purge flow is considered CBI or CBI deducible.
Lignite Coal Purge Rate per Amount of Coal Burned (GPD/Ton)

min 0.069664865

max 0.53609737

avg 0.224180519

median 0.231310015

Subbituminous Coal Purge Rate per Amount of Coal Burned (GPD/Ton)
min 0.002030949

max 0.344909557

avg 0.071442372

median 0.039179797
on. All data used to 





All plant-level data has been removed from this tab as a result of CBI sanitization. All data used 

to estimate FGD purge flow is considered CBI or CBI deducible.
All plant-level data has been removed from this tab as a result of CBI sanitization. All data used to 

estimate FGD purge flow is considered CBI or CBI deducible.
f CBI sanitization. All data used to 








All plant-level data has been removed from this tab as a result of CBI sanitization. All data 

used to estimate FGD purge flow is considered CBI or CBI deducible.






All plant-level data has been removed from this tab as a result of CBI sanitization. All data 

used to estimate FGD purge flow is considered CBI or CBI deducible.