Document ID: EPA-R04-OAR-2013-0084-0009
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2016-01-11T05:00Z

EGU Controls; Atlanta Nonattainment Area

Prepared by B. Pearce

NOx Control: Selective Catalytic Reduction (SCR), VISTAS removal
efficiency = 82.5 % (VISTAS 2012 Projection Emission Inventory, MACTEC) 

SO2 Control: Flue Gas Desulfurization (FGD), required removal efficiency
per (uuu) = 95 %, VISTAS removal efficiency = 95 % (VISTAS 2012
Projection Emission Inventory, MACTEC).

PM Control:  ESPs began operation prior to 2007.  The PM2.5 control
factor due to FGD was assumed to be 50% according to Table 5.4-1 on page
5.4-24 of EPA document "Stationary Source Control Techniques Document
for Fine Particulate Matter" (EC/R Incorporated, 1998).  

Control Order (Upstream to Downstream):  SCR, ESP, FGD

Attainment Year (Base Year) for Atlanta Maintenance Plan Emissions
Inventories is 2008 [note: attainment year for other nonattainment areas
is different]



EGU Control Dates: Atlanta PM2.5 NAA 

Plant/Unit	County	NOx Control

Operation (SCR)	NOx Control (SCR)

required by 

rule (sss)1	SO2 Control

Operation (FGD)	SO2 Control (FGD)

required by 

rule (sss)	Other Controls	Comments

Bowen 1	Bartow	2001(ozone season oper.)	6/1/10	6/1/10	6/1/10	LNB/OFA

ESP

	Bowen 2	Bartow	2001(ozone season oper.)	6/1/09	5/1/09	6/1/09	LNB/OFA 

ESP

	Bowen 3	Bartow	2002 (ozone season oper.)	12/31/08	5/1/08	12/31/08
LNB/OFA 

ESP

	Bowen 4	Bartow	2002 (ozone season oper.)	12/31/08	12/1/08	12/31/08
LNB/OFA 

ESP

Branch 1	Putnam

12/31/13

12/31/13	LNB 

ESP

	GA Power has filed request to GA PSC to shut down Unit 1 in 20132  

Branch 2	Putnam

12/31/13 

12/31/13 	LNB 

ESP

	GA Power has filed request to GA PSC to shut down Unit 2 in 20132  

Branch 3	Putnam

6/1/15

6/1/15	LNB 

ESP

	Branch 4	Putnam

6/1/15

6/1/15	LNB 

ESP

McDonough 1	Cobb

4/30/123

4/30/123	LNB/OFA, ESP	Will replace with one gas-fired generating block
in 2012 Q2 

McDonough 2	Cobb

12/31/113

12/31/113	LNB/OFA, ESP	Will replace with two gas-fired generating blocks
in 2011 Q4



Plant/Unit	County	NOx Control

Operation (SCR)	NOx Control (SCR)

required by 

rule (sss)1	SO2 Control

Operation (FGD)	SO2 Control (FGD)

required by 

rule (sss)	Other Controls	Comments

Wansley 1	Heard	2002 (ozone season oper.)	12/31/08	12/1/08	12/31/08
LNB/OFA 

ESP

	Wansley 2	Heard	2003 (ozone season oper.)	12/31/09	5/1/09	12/31/09
LNB/OFA 

ESP

Yates 1	Coweta

No requirement	prior to 2008 – but not required	12/31/08	LNB 

ESP

	Yates 2 - 5	Coweta

No requirement

No requirement	ESPs

	Yates 6	Coweta

6/1/15

6/1/15	LNB 

ESP

	Yates 7	Coweta

6/1/15

6/1/15	LNB 

ESP

	

(1) year-round operation required

(2)  Source:  Georgia Power Integrated Resource Plan, updated August
2011

(3)  Georgia Power will shut down McDonough’s coal-fired Units 1 and 2
by these dates and replace them with three new gas-fired combined cycle
(combustion turbine and duct burner) blocks of 840 MW each.  Annual
potential emissions from the three generating blocks were estimated in
the PSD Prelimary Determination dated November 2007 (see Permit
Application No. 17297 and Permit 4911-067-0003-V-02-2 ).  NOx emissions
from each block will be controlled by an SCR and a low-NOx burner.

 

	Blk 4 annual

emissions 	Blk 5 annual

emissions 	Blk 6 annual

emissions

SO2 (tons)	19	19	18

NOx( tons)	217	217	200

PM10 (tons)	203	203	175



Bowen – Removal Efficiencies of Added Controls

Plant/Unit

             

             	2008 Controls

NOx

SO2

PM/Hg	Controls Added after 2008

NOx

SO2

PM/Hg	Removal Efficiency of Added Controls 	Efficiency Basis	Requirement
for additional control	Comments

Bowen 1

	SCR (ozone season)

LNB/OFA	SCR Oct - April	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Bowen 2	SCR (ozone season)

LNB/OFA	SCR Oct - April	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Bowen 3

	SCR (ozone season)

LNB/OFA	SCR Oct - April	82.5 % 	VISTAS inventory	Rule (sss) 

FGD (bubbler) – SEE COMMENT	FGD (bubbler) full year operation – SEE
COMMENT	95% - SEE COMMENT	VISTAS inventory	Rules (sss) and (uuu)	FGD was
started up in May 2008 and operated for partial year

	ESP	FGD cobenefit	50%	EPA1

Bowen 4

	SCR (ozone season)

LNB/OFA	SCR Oct - April	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

(1) Table 5.4-1 on page 5.4-24 of EPA document "Stationary Source
Control Techniques Document for Fine Particulate Matter" (EC/R
Incorporated, 1998).  

Branch – Removal Efficiencies of Added Controls

Plant/Unit

             

             	2008 Controls

NOx

SO2

PM/Hg	Controls Added after 2008

NOx

SO2

PM/Hg	Removal Efficiency of Added Controls 	Efficiency Basis	Requirement
for additional control	Comments

Branch 1

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 	GPC has filed request to
GA PSC to shut down Unit 1 in 2013  

	none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Branch 2

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 	GPC has filed request to
GA PSC to shut down Unit 2 in 2013

	none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Branch 3

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Branch 4

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

(1) Table 5.4-1 on page 5.4-24 of EPA document "Stationary Source
Control Techniques Document for Fine Particulate Matter" (EC/R
Incorporated, 1998).  



Wansley – Removal Efficiencies of Added Controls

Plant/Unit

             

             	2008 Controls

NOx

SO2

PM/Hg	Controls Added after 2008

NOx

SO2

PM/Hg	Removal Efficiency of Added Controls 	Efficiency Basis	Requirement
for additional control	Comments

Wansley 1

	SCR (ozone season)

LNB/OFA	SCR Oct - April	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Wansley 2	SCR (ozone season)

LNB/OFA	SCR Oct - April	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

(1) Table 5.4-1 on page 5.4-24 of EPA document "Stationary Source
Control Techniques Document for Fine Particulate Matter" (EC/R
Incorporated, 1998).  



Yates – Removal Efficiencies of Added Controls

Plant/Unit

             

             	2008 Controls

NOx

SO2

PM/Hg	Controls Added after 2008

NOx

SO2

PM/Hg	Removal Efficiency of Added Controls 	Efficiency Basis	Requirement
for additional control	Comments

Yates 1

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 

FGD (bubbler) 	FGD operation required by rule (sss)	No additional
removal	VISTAS inventory; CAMD records	Rules (sss) and (uuu)	CAMD SO2
emissions records for 2006 – 2010 indicate that FGD operating
essentially year-round prior to 2007.

	ESP, FGD cobenefit	FGD operation required by rule (sss)	No additional
removal

	Yates 6

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

Yates 7

	LNB	SCR 	82.5 % 	VISTAS inventory	Rule (sss) 

none	FGD (bubbler)	95%	VISTAS inventory	Rules (sss) and (uuu)

ESP	FGD cobenefit	50%	EPA1

(1) Table 5.4-1 on page 5.4-24 of EPA document "Stationary Source
Control Techniques Document for Fine Particulate Matter" (EC/R
Incorporated, 1998).  

Updated September 2, 2011							page   PAGE  7