Scenario SO2 NOx PM Pre-control days >0.5 Postcontrol days >0.5∆days Precontrol days >1.0 Postcontrol days >1.0∆days PrecontrolNo control No control Existing ESP 116

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--- --- Run 1 No control ASOFA+SNCRExisting ESP 116 78 38 60 39 21 Run 2A FGD at 90% No control Existing ESP 116 54 62 60 27 33 Run 2B FGD at 95% No control Existing ESP 116 45 71 60 21 39 Run 3A No control No control CD Rate w/ dry FGD 116 96 20 60 45 15 Run 3B No control No control CD Rate w/ wet FGD 116 96 20 60 45 15 Run 4 FGD at 90% ASOFA+SNCRCD Rate w/ wet FGD 116 20 96 60 7 53 ND Run 1 FGD at 95% ASOFA+SCR CD Rate w/ wet FGD 116 2 114 60 0 60 **Milton R. Young Unit 1 - Days > 0.5 dv and >1.0 dv**

TRNP-South Unit Control Option 3-year totals 3-year totals

Page 1 of 4**Milton R. Young 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 PrecontrolNo control No control Existing ESP 124

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--- --- Run 1 No control ASOFA+SNCRExisting ESP 124 93 31 64 42 22 Run 2A FGD at 90% No control Existing ESP 124 69 55 64 32 32 Run 2B FGD at 95% No control Existing ESP 124 50 74 64 23 41 Run 3A No control No control CD Rate w/ dry FGD 124 104 20 64 55 9 Run 3B No control No control CD Rate w/ wet FGD 124 104 20 64 55 9 Run 4 FGD at 90% ASOFA+SNCRCD Rate w/ wet FGD 124 20 104 64 6 58 ND Run 1 FGD at 95% ASOFA+SCR CD Rate w/ wet FGD 124 2 122 64 0 64 TRNP-North Unit Control Option 3-year totals 3-year totals

Page 2 of 4**Milton R. Young 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 PrecontrolNo control No control Existing ESP 84

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--- --- Run 1 No control ASOFA+SNCRExisting ESP 84 65 19 48 31 17 Run 2A FGD at 90% No control Existing ESP 84 47 37 48 21 27 Run 2B FGD at 95% No control Existing ESP 84 32 52 48 21 27 Run 3A No control No control CD Rate w/ dry FGD 84 77 7 48 38 10 Run 3B No control No control CD Rate w/ wet FGD 84 77 7 48 38 10 Run 4 FGD at 90% ASOFA+SNCRCD Rate w/ wet FGD 84 12 72 48 5 43 ND Run 1 FGD at 95% ASOFA+SCR CD Rate w/ wet FGD 84 1 83 48 0 48 TRNP-Elkhorn Ranch Control Option 3-year totals 3-year totals

Page 3 of 4**Milton R. Young 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 PrecontrolNo control No control Existing ESP 151

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--- --- Run 1 No control ASOFA+SNCRExisting ESP 151 107 44 80 56 24 Run 2A FGD at 90% No control Existing ESP 151 70 81 80 26 54 Run 2B FGD at 95% No control Existing ESP 151 56 95 80 18 62 Run 3A No control No control CD Rate w/ dry FGD 151 127 24 80 69 11 Run 3B No control No control CD Rate w/ wet FGD 151 127 24 80 69 11 Run 4 FGD at 90% ASOFA+SNCRCD Rate w/ wet FGD 151 15 136 80 5 75 ND Run 1 FGD at 95% ASOFA+SCR CD Rate w/ wet FGD 151 3 148 80 0 80 Lostwood NWA Control Option 3-year totals 3-year totals

Page 4 of 4Scenario SO2 NOx PM Pre-control days >0.5 Postcontrol days >0.5∆days Precontrol days >1.0 Postcontrol days >1.0∆days PrecontrolExisting Wet ScrubberNo control Existing ESP/Wet Scrubber 120

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--- --- Run 1 Existing Wet ScrubberASOFA+SNCRExisting ESP/Wet Scrubber 120 86 34 59 43 16 Run 2A FGD at 90% No control Existing ESP/Wet Scrubber 120 80 40 59 42 17 Run 2B FGD at 95% No control Existing ESP/Wet Scrubber 120 68 52 59 38 21 Run 3 Existing Wet ScrubberNo control CD Rate 120 118 2 59 56 3 Run 4 FGD at 90% ASOFA+SNCRCD Rate 120 40 80 59 18 41 ND Run 1 FGD at 95% ASOFA+SNCRCD Rate 120 31 89 59 11 48 ND Run 2 FGD at 95% ASOFA+SCR CD Rate 120 10 110 59 2 57 TRNP-South Unit **Milton R. Young Unit 2 - Days > 0.5 dv and >1.0 dv**
Control Option 3-year totals 3-year totals

Page 1 of 4**Milton R. Young Unit 2 - 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 PrecontrolExisting Wet ScrubberNo control Existing ESP/Wet Scrubber 122

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--- --- Run 1 Existing Wet ScrubberASOFA+SNCRExisting ESP/Wet Scrubber 122 96 26 68 45 23 Run 2A FGD at 90% No control Existing ESP/Wet Scrubber 122 89 33 68 49 19 Run 2B FGD at 95% No control Existing ESP/Wet Scrubber 122 74 48 68 44 24 Run 3 Existing Wet ScrubberNo control CD Rate 122 111 11 68 68 0 Run 4 FGD at 90% ASOFA+SNCRCD Rate 122 50 72 68 18 50 ND Run 1 FGD at 95% ASOFA+SNCRCD Rate 122 33 89 68 13 55 ND Run 2 FGD at 95% ASOFA+SCR CD Rate 122 8 114 68 2 66 TRNP-North Unit Control Option 3-year totals 3-year totals

Page 2 of 4**Milton R. Young Unit 2 - 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 PrecontrolExisting Wet ScrubberNo control Existing ESP/Wet Scrubber 90

--- --- 45

--- --- Run 1 Existing Wet ScrubberASOFA+SNCRExisting ESP/Wet Scrubber 90 73 17 45 34 11 Run 2A FGD at 90% No control Existing ESP/Wet Scrubber 90 57 33 45 34 11 Run 2B FGD at 95% No control Existing ESP/Wet Scrubber 90 46 44 45 27 18 Run 3 Existing Wet ScrubberNo control CD Rate 90 88 2 45 43 2 Run 4 FGD at 90% ASOFA+SNCRCD Rate 90 32 58 45 12 33 ND Run 1 FGD at 95% ASOFA+SNCRCD Rate 90 27 63 45 9 36 ND Run 2 FGD at 95% ASOFA+SCR CD Rate 90 8 82 45 1 44 TRNP-Elkhorn Ranch Control Option 3-year totals 3-year totals

Page 3 of 4**Milton R. Young Unit 2 - 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 PrecontrolExisting Wet ScrubberNo control Existing ESP/Wet Scrubber 151

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--- --- Run 1 Existing Wet ScrubberASOFA+SNCRExisting ESP/Wet Scrubber 151 114 37 86 61 25 Run 2A FGD at 90% No control Existing ESP/Wet Scrubber 151 105 46 86 52 34 Run 2B FGD at 95% No control Existing ESP/Wet Scrubber 151 92 59 86 44 42 Run 3 Existing Wet ScrubberNo control CD Rate 151 143 8 86 79 7 Run 4 FGD at 90% ASOFA+SNCRCD Rate 151 57 94 86 11 75 ND Run 1 FGD at 95% ASOFA+SNCRCD Rate 151 37 114 86 8 78 ND Run 2 FGD at 95% ASOFA+SCR CD Rate 151 6 145 86 0 86 Control Option 3-year totals 3-year totals Lostwood NWA

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