The following table outlines the significant financial obligations and commitments that we have assumed in the normal course of our operations and are known as of February 28, 2008. These obligations and commitments represent future cash payments that the Trust is required to make under existing contractual agreements that it has entered into either directly, or as a 36.74 percent owner in the Syncrude Joint Venture:
| Payments Due By Period | |||||
| ($ millions) | Total | < 1 year | 1 – 3 years | 4 – 5 years | > 5 years |
| Long-term debt1 | 1,229 | 166 | 447 | 296 | 320 |
| Capital expenditure commitments2 | 250 | 84 | 166 | – | – |
| Pension plan solvency deficiency payments3 | 122 | 14 | 42 | 17 | 49 |
| Management services agreement4 | 153 | 17 | 51 | 34 | 51 |
| Pipeline commitments5 | 575 | 25 | 59 | 40 | 451 |
| Asset retirement obligations6 | 743 | 13 | 34 | 30 | 666 |
| Other obligations7 | 288 | 166 | 81 | 9 | 32 |
| 3,360 | 485 | 880 | 426 | 1,569 | |
In total, the Trust's financial obligations have decreased by $919 million relative to the prior year-end. The four most significant net changes are: (1) a reduction in long-term debt of $415 million, as discussed in the "Liquidity and Capital Resources" section of this MD&A; (2) a $475 million payment, comprised of cash and Units, to Talisman on January 2, 2007 for the additional 1.25 percent Syncrude working interest acquisition; (3) a $60 million decrease in natural gas purchase commitments, mainly reflecting timing of natural gas contract renewals; and (4) a $127 million increase in the Trust's estimated undiscounted reclamation cost obligation, as previously discussed in the Review of Financial Results of this MD&A. The Trust is committed to paying this obligation as the Syncrude Joint Venture properties are reclaimed and has recorded its obligation on a discounted basis in its Consolidated Balance Sheet under "Asset retirement obligation", which totalled $226 million at December 31, 2007. Syncrude Canada's pension plan actuarial valuation for December 31, 2006 was completed in the second quarter of 2007 and confirmed an increase to our share of Syncrude Canada's pension funding of approximately $5 million per year for the next five years. There have been no other significant changes to the Trust's contractual obligations and commitments in 2007 from our 2006 year-end disclosure, other than reductions to the capital expenditure and various payment obligation commitments as a result of expenditures incurred in the year.

