|                                                                                                                 |   | Year                  ended December                  31, |    |
|----------------------------------------------------------------------------------------------------------------------|--------|-----------------------------------------------------------|---------|
|                                                                                                                 |   | 2003                                                 |    | 2004 |   | 2005  |   | 2006  |   |   | 2007 |   |
| EARNINGS                                                                                                             |   |                                            |    |     |   |     |   |     |   |   |   |   |
| Income                  (Loss) Before Income Taxes                                                                   |   | $                                                         | 91,728  |   | $ | 45,351 |   | $ | 88,378 |   | $ | 52,847 |   | $ | (46,139 | ) |
| Fixed                  Charges (as below)                                                                            |   |                                                      | 46,787  |   |   | 39,475 |   |   | 36,762 |   |   | 44,769 |   |   | 54,716 |   |
| Total                  Earnings                                                                                      |   | $                                                         | 138,515 |   | $ | 84,826 |   | $ | 125,140 |   | $ | 97,616 |   | $ | 8,577 |   |
|                                                                                                                 |   |                                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| FIXED                  CHARGES                                                                                       |   |                                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Interest                  Expense                                                                                    |   | $                                                         | 44,784  |   | $ | 37,957 |   | $ | 34,094 |   | $ | 40,778 |   | $ | 46,560 |   |
| Credit                  for Allowance for Borrowed Funds Used                     During Construction |   |                                                      | 451     |   |   | 280 |   |   | 668 |   |   | 1,491 |   |   | 5,156 |   |
| Trust                  Dividends                                                                                     |   |                                                      | (93     | ) |   | (62 | ) |   | - |   |   | - |   |   |  - |   |
| Estimated                  Interest Element in Lease Rentals                                                         |   |                                                      | 1,645   |   |   | 1,300 |   |   | 2,000 |   |   | 2,500 |   |   | 3,000 |   |
| Total                  Fixed                  Charges                                                                |   | $                                                         | 46,787  |   | $ | 39,475 |   | $ | 36,762 |   | $ | 44,769 |   | $ | 54,716 |   |
|                                                                                                                 |   |                                                      |    |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio                  of Earnings to Fixed                  Charges                                                 |   |                                                      | 2.96    |   |   | 2.14 |   |   | 3.40 |   |   | 2.18 |   |   | 0.15 |   |