These sensitivities reflect the impact on cash flow per trust unit for the remaining three quarters of 2008 and include the commodity contracts described in Note 9 of our first quarter report as well as the impact of 2008 forward market prices as at April 21, 2008.  To the extent the market price of crude oil and natural gas change significantly from the April 21, 2008 levels, the sensitivities will no longer be relevant as the effect of our commodity contracts will change.

* Assumes constant working capital and 160,147,000 units outstanding.
The impact of a change in one factor may be compounded or offset by changes in other factors.  This table does not consider the impact of any inter-relationship among the factors.