Updated September 2, 2011 

EGU Controls; Atlanta Nonattainment Area Prepared by B. Pearce NOx Control: Selective Catalytic Reduction (SCR), VISTAS removal efficiency = 82.5 % (VISTAS 2012 ProjectioMACTEC) SO2 Control: Flue Gas Desulfurization (FGD), required removal efficiency per (uuu) = 95 %, VISTAS removal eff

(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% a

on page 5.4-24 of EPA document "Stationary Source Control Techniques Document for Fine Particulate Matter" (EControl Order (Upstream to Downstream): SCR, ESP, FGD Attainment Year (Base Year) for Atlanta Maintenance Plan Emissions Inventories is 2008 [note: attainment year for areas is different] 
Updated September 2, 2011 

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

Co

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 GA 201

Branch 2 Putnam 12/31/13 12/31/13 LNB 

ESP 

GA GA 201

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

Wigen

McDonough 2 

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

ESP

Wigen
Updated September 2, 2011 

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

Co

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 combinand duct burner) blocks of 840 MW each. Annual potential emissions from the three generating blocks were estimated in the PSD PrelimaNovember 2007 (see Permit Application No. 17297 and Permit 4911-067-0003-V-02-2 ). NOx emissions from each block will be controllburner. 

Blk 4 annual emissions 

Blk 5 annual emissions 

Blk 6 annualemissions 

SO2 (tons) 19 19 18 NOx( tons) 217 217 200 PM10 (tons) 203 203 175 
Updated September 2, 2011 

Bowen – Removal Efficiencies of Added Controls 

Plant/Unit 2008 Controls

NOx SO2 PM/Hg 

Controls Added after 2008NOx SO2 PM/Hg 

Removal Efficiency of Added Controls 

Efficiency Basis 

Requirement for additional control 

Com

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 200year 

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 ParticuIncorporated, 1998). 
Updated September 2, 2011 

Branch – Removal Efficiencies of Added Controls 

Plant/Unit 2008 Controls

NOx SO2 PM/Hg 

Controls Added after 2008NOx SO2 PM/Hg 

Removal Efficiency of Added Controls 

Efficiency Basis 

Requirement for additional control 

Com

Branch 1 LNB SCR 82.5 % VISTAS 

inventory 

Rule (sss) GPC 

to sh

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 

to sh

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 ParticuIncorporated, 1998). 
Updated September 2, 2011 

Wansley – Removal Efficiencies of Added Controls 

Plant/Unit 2008 Controls

NOx SO2 PM/Hg 

Controls Added after 2008NOx SO2 PM/Hg 

Removal Efficiency of Added Controls 

Efficiency Basis 

Requirement for additional control 

Com

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 ParticuIncorporated, 1998). 
Updated September 2, 2011 

Yates – Removal Efficiencies of Added Controls 

Plant/Unit 2008 Controls

NOx SO2 PM/Hg 

Controls Added after 2008NOx SO2 PM/Hg 

Removal Efficiency of Added Controls 

Efficiency Basis 

Requirement for additional control 

Com

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) 

CAM2006 operprior 

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 ParticuIncorporated, 1998).