This excerpt taken from the BCO 10-K filed Feb 27, 2007.
Interest Rate Risk
The Company uses both fixed and floating rate debt and leases to finance its operations. Floating rate obligations, including the Companys Revolving Facility, expose the Company to fluctuations in cash flows due to changes in the general level of interest rates. Fixed rate obligations, including the Companys Dominion Terminal Associates debt, are subject to fluctuations in fair values as a result of changes in interest rates.
Based on the contractual interest rates on the floating rate debt at December 31, 2006, a hypothetical 10% increase in rates would increase cash outflows by approximately $0.6 million over a twelve-month period (in other words, the Companys weighted average interest rate on its floating rate instruments was 5.66% per annum at December 31, 2006. If that average rate were to increase by 57 basis points to 6.23%, the cash outflows associated with these instruments would increase by $0.6 million annually). The effect on the fair value of the Companys Dominion Terminal Associates debt for a hypothetical 10% decrease in the yield curve from year-end 2006 levels would result in a $3.6 million increase in the fair value of this debt.