Updated September 2, 2011 page 1

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]
Updated September 2, 2011 page 2

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 4/30/1234/30/123 LNB/OFA, 

ESP

Will replace with one gas-fired 

generating block in 2012 Q2 

McDonough 

2

Cobb 12/31/11312/31/113 LNB/OFA, 

ESP

Will replace with two gas-fired 

generating blocks in 2011 Q4
Updated September 2, 2011 page 3

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
Updated September 2, 2011 page 4

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). 
Updated September 2, 2011 page 5

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). 
Updated September 2, 2011 page 6

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). 
Updated September 2, 2011 page 7

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).