Roseton Units 1 and 2 April 2012

EPA analysis of cost-effectiveness and visibility improvements based on Dynegy BART analysis

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SO2 No. 6 Fuel oil, 0.50% sulfur - Roseton Unit 1

Roseton Unit 1

 from Dynegy spreadsheet--------annualized costs $95,137,428

maximum 8th

dv dv

Class I Areas improvement $/dv improvement $/dv

Lye Brook Wilderness Area, VT 0.853 $111,532,741 1.37 $69,443,378

Acadia National Park, ME 1.171 $81,244,601 0.571 $166,615,461

Brigantine Wilderness Area, NJ 1.778 $53,508,115 0.688 $138,281,145

Presidential Range Wilderness Area, NH 1.577 $60,328,109 0.509 $186,910,468

Great Gulf Wilderness Area, NH 1.48 $64,282,046 0.378 $251,686,317

Dolly Sods Wilderness Area, WV 0.823 $115,598,333 0.284 $334,990,944

Otter Creek Wilderness Area, WV 0.768 $123,876,859 0.214 $444,567,421

Total 8.45 $11,258,867 4.014 $23,701,402

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SO2 No. 6 Fuel oil, 1.00% sulfur - Roseton Unit 1

Roseton Unit 1

 from Dynegy spreadsheet--------annualized costs $60,602,082

maximum 8th

dv dv

Class I Areas improvement $/dv improvement $/dv

Lye Brook Wilderness Area, VT 0.339 $178,767,204 0.501 $120,962,240

Acadia National Park, ME 0.432 $140,282,597 0.177 $342,384,644

Brigantine Wilderness Area, NJ 0.646 $93,811,272 0.298 $203,362,691
Presidential Range Wilderness Area, NH 0.57 $106,319,442 0.205 $295,619,912

Great Gulf Wilderness Area, NH 0.567 $106,881,979 0.152 $398,697,908

Dolly Sods Wilderness Area, WV 0.324 $187,043,463 0.113 $536,301,611

Otter Creek Wilderness Area, WV 0.288 $210,423,896 0.08 $757,526,025

Total 3.166 $19,141,529 1.526 $39,713,029

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SO2 Gas Cofiring at 100% - Roseton Unit 1

Roseton Unit 1

 from Dynegy spreadsheet--------annualized costs -$481,738,067

maximum 8th

dv dv

Class I Areas improvement $/dv improvement $/dv

Lye Brook Wilderness Area, VT 2.802 -$171,926,505 2.49 -$193,469,103

Acadia National Park, ME 2.304 -$209,087,703 1.084 -$444,407,811

Brigantine Wilderness Area, NJ 3.526 -$136,624,523 1.331 -$361,936,940

Presidential Range Wilderness Area, NH 2.913 -$165,375,238 0.85 -$566,750,667

Great Gulf Wilderness Area, NH 2.672 -$180,291,193 0.734 -$656,318,892

Dolly Sods Wilderness Area, WV 1.458 -$330,410,197 0.49 -$983,138,912

Otter Creek Wilderness Area, WV 1.348 -$357,372,453 0.362 -$1,330,768,141

Total 17.023 -$28,299,246 7.341 -$65,622,949

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SO2 No. 6 Fuel oil, 0.50% sulfur - Roseton Unit 2

Roseton Unit 2

 from Dynegy spreadsheet--------annualized costs $92,305,028

maximum 8th
dv dv

Class I Areas improvement $/dv improvement $/dv

Lye Brook Wilderness Area, VT 0.837 $110,280,798 1.333 $69,246,083

Acadia National Park, ME 1.151 $80,195,507 0.582 $158,599,704

Brigantine Wilderness Area, NJ 1.738 $53,109,913 0.684 $134,948,871

Presidential Range Wilderness Area, NH 1.535 $60,133,569 0.5 $184,610,056

Great Gulf Wilderness Area, NH 1.463 $63,092,979 0.379 $243,548,887

Dolly Sods Wilderness Area, WV 0.790 $116,841,808 0.276 $334,438,507

Otter Creek Wilderness Area, WV 0.731 $126,272,268 0.208 $443,774,173

Total 8.245 $11,195,273 3.962 $23,297,584

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SO2 No. 6 Fuel oil, 1.00% sulfur - Roseton Unit 2

Roseton Unit 2

 from Dynegy spreadsheet--------annualized costs $60,602,082

maximum 8th

dv dv

Class I Areas improvement $/dv improvement $/dv

Lye Brook Wilderness Area, VT 0.330 $183,642,673 0.488 $124,184,594

Acadia National Park, ME 0.425 $142,593,134 0.173 $350,301,052

Brigantine Wilderness Area, NJ 0.633 $95,737,886 0.302 $200,669,146

Presidential Range Wilderness Area, NH 0.556 $108,996,550 0.2 $303,010,410

Great Gulf Wilderness Area, NH 0.568 $106,693,806 0.148 $409,473,527

Dolly Sods Wilderness Area, WV 0.254 $238,590,874 0.114 $531,597,211

Otter Creek Wilderness Area, WV 0.270 $224,452,156 0.078 $776,949,769

Total 3.036 $19,961,160 1.503 $40,320,747

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SO2 Gas Cofiring at 100% - Roseton Unit 2
Roseton Unit 2

 from Dynegy spreadsheet--------annualized costs -$429,324,884

maximum 8th

dv dv

Class I Areas improvement $/dv improvement $/dv

Lye Brook Wilderness Area, VT 2.671 -$160,735,636 2.398 -$179,034,564

Acadia National Park, ME 2.245 -$191,236,029 1.067 -$402,366,339

Brigantine Wilderness Area, NJ 3.421 -$125,496,897 1.294 -$331,781,209

Presidential Range Wilderness Area, NH 2.811 -$152,730,304 0.822 -$522,293,046

Great Gulf Wilderness Area, NH 2.600 -$165,124,955 0.718 -$597,945,521

Dolly Sods Wilderness Area, WV 1.396 -$307,539,315 0.475 -$903,841,861

Otter Creek Wilderness Area, WV 1.283 -$334,625,786 0.352 -$1,219,672,966

Total 16.427 -$26,135,319 7.126 -$60,247,668

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