**Roseton Units 1 and 2 April 2012** 

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

**=============================================================================================== 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** 

**=============================================================================================== 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 $203,362,691Presidential 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** 

**=============================================================================================== 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** 

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

**Roseton Unit 2** from Dynegy spreadsheet--------annualized costs $92,305,028
maximum 8thdv 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** 

**=============================================================================================== 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** 

**=============================================================================================== 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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