Scenario SO22 NOx3 PM10 PM FinePM Coarse4 SO2 NOx PM 98th Percentile Impact (dv) 98th Percentile

Improvement (dv) Class I

Area Meterological

Year Precontrol 5733.5 1772.3 249.2 101.9 147.3 Existing Wet Scrubber Existing

SOFA/LNB Existing ESP 2.559 NA TRNP-SU 2002 1 1756.4 1227.6 249.2 101.9 147.3 Scrubber ModificationsSOFA/LNB #2 Existing ESP 1.181 1.378 TRNP-SU 2002 2 1756.4 1083.1 249.2 101.9 147.3 Scrubber ModificationsSOFA/LNB #1 Existing ESP 1.140 1.419 TRNP-SU 2002 3 1756.4 776.2 249.2 101.9 147.3 Scrubber Modifications SNCR Existing ESP 1.052 1.507 TRNP-SU 2002 4 1756.4 310.5 249.2 101.9 147.3 Scrubber Modifications SCR Existing ESP 0.799 1.760 TRNP-SU 2002 5 1756.4 155.2 249.2 101.9 147.3 Scrubber Modifications LTO Existing ESP 0.706 1.853 TRNP-SU 2002 6 610.8 1227.6 249.2 101.9 147.3 New ScrubberSOFA/LNB #2 Existing ESP 0.695 1.864 TRNP-SU 2002 7 610.8 1083.1 249.2 101.9 147.3 New ScrubberSOFA/LNB #1 Existing ESP 0.640 1.919 TRNP-SU 2002 8 610.8 776.2 249.2 101.9 147.3 New Scrubber SNCR Existing ESP 0.546 2.013 TRNP-SU 2002 9 610.8 310.5 249.2 101.9 147.3 New Scrubber SCR Existing ESP 0.406 2.153 TRNP-SU 2002 10 610.8 155.2 249.2 101.9 147.3 New Scrubber LTO Existing ESP 0.332 2.227 TRNP-SU 2002 1See Appendix C.2 of SIP.

4PM emission rates reflect existing ESP. PM control scenarios were modeled separately from SO2 and NOx controls with results showing that the visibility improvement is negligible. Control Option Emission Rate (lbs/hr) **Coal Creek Unit 1 CALPUFF Modeling 1** 

3NOx control scenario emission rates reflect application fo a 20% increase over the design emission rate to account for variability. NOx emission rates calculated at a heat input capacity of 6,015 2SO2 control scenario emission rates reflect application of a 70% increase over the design emission rate for new scrubber to account for variability. SO2 control scenario emission rates were calculated at maximum fuel sulfur content of 2.6 lb/MMBtu. Shown at an assumed heat input capacity of 6,015 lb/MMBtu.

7/14/2011

### Scenario SO22 

### NOx3 

### PM10 PM FinePM Coarse4 

### SO2 NOx PM 98th Percentile Impact (dv) 98th Percentile

Improvement (dv) Class I

Area Meterological

Year Precontrol5733.5 1772.3 249.2 101.9 147.3 Existing Wet Scrubber Existing

SOFA/LNB Existing ESP 2.559 NA TRNP-SU 2002 1 1756.4 1227.6 249.2 101.9 147.3 Scrubber ModificationsSOFA/LNB #2 Existing ESP 1.181 1.378 TRNP-SU 2002 2 1756.4 1083.1 249.2 101.9 147.3 Scrubber ModificationsSOFA/LNB #1 Existing ESP 1.140 1.419 TRNP-SU 2002 3 1756.4 776.2 249.2 101.9 147.3 Scrubber Modifications SNCR Existing ESP 1.052 1.507 TRNP-SU 2002 4 1756.4 310.5 249.2 101.9 147.3 Scrubber Modifications SCR Existing ESP 0.799 1.760 TRNP-SU 2002 5 1756.4 155.2 249.2 101.9 147.3 Scrubber Modifications LTO Existing ESP 0.706 1.853 TRNP-SU 2002 6 610.8 1227.6 249.2 101.9 147.3New ScrubberSOFA/LNB #2 Existing ESP 0.695 1.864 TRNP-SU 2002 7 610.8 1083.1 249.2 101.9 147.3New ScrubberSOFA/LNB #1 Existing ESP 0.640 1.919 TRNP-SU 2002 8 610.8 776.2 249.2 101.9 147.3New Scrubber SNCR Existing ESP 0.546 2.013 TRNP-SU 2002 9 610.8 310.5 249.2 101.9 147.3New Scrubber SCR Existing ESP 0.406 2.153 TRNP-SU 2002 10 610.8 155.2 249.2 101.9 147.3New Scrubber LTO Existing ESP 0.332 2.227 TRNP-SU 2002

1

### See Appendix C.2 of SIP

4

### PM emission rates reflect existing ESP. PM control scenarios were modeled separately from SO2 and NOx controls with results showing that the visibility improvement is negligible. 2

### SO2 control scenario emission rates reflect application of a 70% increase over the design emission rate for new scrubber to account for variability. SO2 control scenario emission rates were calculated at maximum fuel sulfur content of 2.6 lb/MMBtu. Shown at an assumed heat input capacity of 6,015 lb/MMBtu. 3

### NOx control scenario emission rates reflect application of a 20% increase over the design emission rate to account for variability. NOx emission rates calculated at a heat input capacity of 6,015 **Coal Creek Unit 2 CALPUFF Modeling 1**  

### Emission Rate (lbs/hr) Control Option

7/14/2011