Scenario SO2 NOx PM

Pre-control 

days >0.5

Postcontrol 

days >0.5 ∆days

Precontrol 

days >1.0

Postcontrol 

days >1.0 ∆days

pre-control Base case Base case - LNB Existing baghouse 63 --- --- 28 --- ---

1 Dry Scrubber Base case - LNB Existing baghouse 63 20 43 28 4 24

2 Dry Scrubber LNB/OFA Existing baghouse 63 20 43 28 4 24

3 Dry Scrubber SNCR Existing baghouse 63 20 43 28 4 24

4 Dry Scrubber LNB/OFA+SNCR Existing baghouse 63 11 52 28 3 25

5 Dry Scrubber SCR Existing baghouse 63 4 59 28 0 28

6 DSI BH Base case - LNB Existing baghouse 63 47 16 28 17 11

7 DSI BH LNB/OFA Existing baghouse 63 47 16 28 17 11

8 DSI BH SNCR Existing baghouse 63 46 17 28 14 14

9 DSI BH LNB/OFA+SNCR Existing baghouse 63 45 18 28 14 14

10 DSI BH SCR Existing baghouse 63 35 28 28 10 18

11 Wet Scrubber Base case - LNB Existing baghouse 63 14 49 28 3 25

12 Wet Scrubber LNB/OFA Existing baghouse 63 14 49 28 3 25

13 Wet Scrubber SNCR Existing baghouse 63 12 51 28 3 25

14 Wet Scrubber LNB/OFA+SNCR Existing baghouse 63 8 55 28 1 27

15 Wet Scrubber SCR Existing baghouse 63 0 63 28 0 28

16 PRB PRB Existing baghouse 63 NA NA 28 NA NA

17 PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

18 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

19 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

20 Dry Scrubber+ PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

21 63 20 43 28 4 24

22 63 21 42 28 4 24

Stanton Unit 1 - Days > 0.5 dv and >1.0 dv

TRNP-South Unit

Control Option 3-year totals 3-year totals

Scenario 2 + Best PM Controls

Scenario 2 + Permit Limit PM

Page 1 of 4
Stanton Unit 1 - Days > 0.5 dv and >1.0 dv

Scenario SO2 NOx PM

Pre-control 

days >0.5

Postcontrol 

days >0.5 ∆days

Precontrol 

days >1.0

Postcontrol 

days >1.0 ∆days

pre-control Base case Base case - LNB Existing baghouse 61 --- --- 28 --- ---

1 Dry Scrubber Base case - LNB Existing baghouse 61 21 40 28 4 24

2 Dry Scrubber LNB/OFA Existing baghouse 61 20 41 28 4 24

3 Dry Scrubber SNCR Existing baghouse 61 18 43 28 4 24

4 Dry Scrubber LNB/OFA+SNCR Existing baghouse 61 14 47 28 3 25

5 Dry Scrubber SCR Existing baghouse 61 3 58 28 0 28

6 DSI BH Base case - LNB Existing baghouse 61 50 11 28 17 11

7 DSI BH LNB/OFA Existing baghouse 61 50 11 28 17 11

8 DSI BH SNCR Existing baghouse 61 50 11 28 16 12

9 DSI BH LNB/OFA+SNCR Existing baghouse 61 47 14 28 16 12

10 DSI BH SCR Existing baghouse 61 38 23 28 9 19

11 Wet Scrubber Base case - LNB Existing baghouse 61 18 43 28 3 25

12 Wet Scrubber LNB/OFA Existing baghouse 61 17 44 28 3 25

13 Wet Scrubber SNCR Existing baghouse 61 16 45 28 3 25

14 Wet Scrubber LNB/OFA+SNCR Existing baghouse 61 9 52 28 1 27

15 Wet Scrubber SCR Existing baghouse 61 1 60 28 0 28

16 PRB PRB Existing baghouse 61 NA NA 28 NA NA

17 PRB LNB/OFA +PRB Existing baghouse 61 NA NA 28 NA NA

18 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 61 NA NA 28 NA NA

19 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 61 NA NA 28 NA NA

20 Dry Scrubber+ PRB LNB/OFA +PRB Existing baghouse 61 NA NA 28 NA NA

21 61 20 41 4 4 0

22 61 21 40 4 4 0

Scenario 2 + Best PM Controls

Scenario 2 + Permit Limit PM

TRNP-North Unit

Control Option 3-year totals 3-year totals

Page 2 of 4
Stanton Unit 1 - Days > 0.5 dv and >1.0 dv

Scenario SO2 NOx PM

Pre-control 

days >0.5

Postcontrol 

days >0.5 ∆days

Precontrol 

days >1.0

Postcontrol 

days >1.0 ∆days

pre-control Base case Base case - LNB Existing baghouse 63 --- --- 28 --- ---

1 Dry Scrubber Base case - LNB Existing baghouse 63 12 51 28 3 25

2 Dry Scrubber LNB/OFA Existing baghouse 63 12 51 28 3 25

3 Dry Scrubber SNCR Existing baghouse 63 11 52 28 3 25

4 Dry Scrubber LNB/OFA+SNCR Existing baghouse 63 9 54 28 3 25

5 Dry Scrubber SCR Existing baghouse 63 3 60 28 0 28

6 DSI BH Base case - LNB Existing baghouse 63 31 32 28 14 14

7 DSI BH LNB/OFA Existing baghouse 63 31 32 28 14 14

8 DSI BH SNCR Existing baghouse 63 31 32 28 14 14

9 DSI BH LNB/OFA+SNCR Existing baghouse 63 30 33 28 13 15

10 DSI BH SCR Existing baghouse 63 24 39 28 10 18

11 Wet Scrubber Base case - LNB Existing baghouse 63 9 54 28 3 25

12 Wet Scrubber LNB/OFA Existing baghouse 63 9 54 28 3 25

13 Wet Scrubber SNCR Existing baghouse 63 9 54 28 2 26

14 Wet Scrubber LNB/OFA+SNCR Existing baghouse 63 4 59 28 2 26

15 Wet Scrubber SCR Existing baghouse 63 0 63 28 0 28

16 PRB PRB Existing baghouse 63 NA NA 28 NA NA

17 PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

18 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

19 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

20 Dry Scrubber+ PRB LNB/OFA +PRB Existing baghouse 63 NA NA 28 NA NA

21 63 12 51 28 3 25

22 63 13 50 28 3 25

TRNP-Elkhorn Ranch

Control Option 3-year totals 3-year totals

Scenario 2 + Best PM Controls

Scenario 2 + Permit Limit PM

Page 3 of 4
Stanton Unit 1 - Days > 0.5 dv and >1.0 dv

Scenario SO2 NOx PM

Pre-control 

days >0.5

Postcontrol 

days >0.5 ∆days

Precontrol 

days >1.0

Postcontrol 

days >1.0 ∆days

pre-control Base case Base case - LNB Existing baghouse 68 --- --- 24 --- ---

1 Dry Scrubber Base case - LNB Existing baghouse 68 17 51 24 3 21

2 Dry Scrubber LNB/OFA Existing baghouse 68 17 56 24 3 21

3 Dry Scrubber SNCR Existing baghouse 68 17 51 24 3 21

4 Dry Scrubber LNB/OFA+SNCR Existing baghouse 68 14 54 24 3 21

5 Dry Scrubber SCR Existing baghouse 68 3 65 24 0 24

6 DSI BH Base case - LNB Existing baghouse 68 59 9 24 17 7

7 DSI BH LNB/OFA Existing baghouse 68 59 9 24 17 7

8 DSI BH SNCR Existing baghouse 68 59 9 24 17 7

9 DSI BH LNB/OFA+SNCR Existing baghouse 68 55 13 24 14 10

10 DSI BH SCR Existing baghouse 68 46 22 24 10 14

11 Wet Scrubber Base case - LNB Existing baghouse 68 14 54 24 3 21

12 Wet Scrubber LNB/OFA Existing baghouse 68 14 54 24 3 21

13 Wet Scrubber SNCR Existing baghouse 68 13 55 24 3 21

14 Wet Scrubber LNB/OFA+SNCR Existing baghouse 68 11 57 24 3 21

15 Wet Scrubber SCR Existing baghouse 68 1 67 24 0 24

16 PRB PRB Existing baghouse 68 NA NA 24 NA NA

17 PRB LNB/OFA +PRB Existing baghouse 68 NA NA 24 NA NA

18 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 68 NA NA 24 NA NA

19 DSI/ESP+PRB LNB/OFA +PRB Existing baghouse 68 NA NA 24 NA NA

20 Dry Scrubber+ PRB LNB/OFA +PRB Existing baghouse 68 NA NA 24 NA NA

21 68 17 51 24 3 21

22 68 17 51 24 3 21

Note: Scenarios 16-20, reflecting use of PRB coal, were not modeled.

Scenario 2 + Best PM Controls

Scenario 2 + Permit Limit PM

TRNP-Lostwood NWA

Control Option 3-year totals 3-year totals

Page 4 of 4