TABLE 3

- 2



### NO

x 

### Control Cost Comparison (Updated September 2011)

Reid Gardner Station Unit 1

Factor LNB w/OFA LNB w/OFA &

SNCR ROFA w/Rotamix LNB w/OFA &

SCR ROFA w/SCR

Total Installed Capital Costs $ 5.0 Million $ 7 .9 Million $ 11. 0 Million $3 9.8 Million $ 43.6 Million

Total First Year Fixed and Variable O&M Costs $0.1 Million $0.4 Million $0.6 Million $1. 1 Million $1. 4 Million

Total First Year Annualized Cost $0.6 Million $1. 3 Million $1. 6 Million $ 5.3 Million $6.0 Million

Power Consumption (MW)

- 0.10 0.75 0.66 1.41

Annual Power Usage (Million kW

- Hr/Yr)

- 0.8 5.6 5.0 10.6

NO

x Design Control Efficiency 21.3% 40.9% 57.7% 81.6% 81.6%

Tons NO

x Removed per Year 346 665 938 1,327 1,327

First Year Average Control Cost ($/Ton of NO

x Removed) 1, 800 1, 889 1, 910 3,982 4, 505

Incremental Control Cost ($/Ton of NO

x Removed) 1, 800 1, 986 1, 962 8

, 989 0

O&M = operations and maintenance

The incremental control cost for ROFA w/SCR when compared with LNB w/ OFA & S CR results in a non number as the two technologies have the same NOx removal

in tons/yearTABLE 3

- 2



### NO

x 

### Control Cost Comparison (Updated September 2011)

Reid Gardner Station Unit 2

Factor LNB w/OFA LNB w/OFA &

SNCR ROFA w/Rotamix LNB w/OFA &

SCR ROFA w/SCR

Total Installed Capital Costs $ 5.0 Million $7 .9 Million $ 11

. 0 Million $39.8 Million $ 43.6 Million

Total First Year Fixed and Variable O&M Costs $0.1 Million $0.4 Million $0.7 Million $1.1 Million $1.4 Million

Total First Year Annualized Cost $0.6 Million $1. 3 Million $1. 6 Million $ 5.3 Million $ 6.1 Million

Power Consumption (MW)

- 0.10 0.75 0.66 1.41

Annual Power Usage (Million kW

- Hr/Yr)

- 0.8 6.1 5.4 11.6

NO

x Design Control Efficiency 23.7% 42.7% 59.0% 82.2% 82.2%

Tons NO

x Removed per Year 414 749 1,034 1,439 1,439

First Year Average Control Cost ($/Ton of NO

x Removed) 1, 50 1 1, 709 1, 780 3, 703 4,203

Incremental Control Cost ($/Ton of NO

x Removed) 1, 50 1 1, 968 1, 967 8

, 606 0

O&M = operations and maintenance

The incremental control cost for ROFA w/SCR when compared with LNB w/ OFA & S CR results in a non number as the two technologies have the same NOx removal

in tons/yearTABLE 3

- 2



### NO

x 

### Control Cost Comparison (Updated September 2011)

Reid Gardner Station Unit 3

Factor LNB w/OFA LNB w/OFA &

SNCR ROFA w/Rotamix LNB w/OFA &

SCR ROFA w/SCR

Total Installed Capital Costs $ 5.0 Million $ 7 .9 Million $ 11.0 Million $3 9.8 Million $ 43.6 Million

Total First Year Fixed and Variable O&M Costs $0.1 Million $0. 4 Million $0. 6 Million $1.0 Million $1. 4 Million

Total First Year Annualized Cost $0.6 Million $1. 2 Million $1. 5 Million $ 5.3 Million $ 6.0 Million

Power Consumption (MW)

- 0.10 0.75 0.66 1.41

Annual Power Usage (Million kW

- Hr/Yr)

- 0.8 5.9 5.3 11.2

NO

x Design Control Efficiency 6.5% 29.9% 38.3% 78.2% 78.2%

Tons NO

x Removed per Year 95 434 556 1,136 1,136

First Year Average Control Cost ($/Ton of NO

x Removed) 6,547 2, 779 3

, 095 4, 626 5,268

Incremental Control Cost ($/Ton of NO

x Removed) 6,547 1, 72 4 4

, 219 6, 097 0

O&M = operations and maintenance

The incremental control cost for ROFA w/SCR when compared with LNB w/ OFA & S CR results in a non number as the two technologies have the same NOx removal

in tons/year