market risk premium from its determination of expected cash Öow for landÑll asset retirement obligations in
accordance with SFAC 7.
Under SFAS 143, the primary modiÑcation to the Company's historical methodology is to require that
Ñnal capping, closure and post-closure costs be inÖated and discounted to present value. The Company's
estimates of future Ñnal capping, closure and post-closure costs historically have not taken into account
discounts for the present value of costs to be paid in the future. Consequently, the amount of expense
(accretion expense plus amortization expense) will be higher in the later years of a landÑll's life than in earlier
years.
71