Exhibit $ millions Weight Equity market cap as of 12/31/2007 Book value of debt as of 12/31/2007

Credit rating A Beta 0.6 10-year U.S. treasury YTM as of 12/31/2007 4.10% A 10-yr corporate bond yield as of 12/31/2007 5.50% expected annual market risk premium 4.79% tax rate 32.61%

dividend growth rate 4.75% last dividend closing share price 12/31/2007

Cost of Equity Ke: CAPM Constant dividend growth (or "Dividend Discount Model")

WACC: with Ke based on CAPM with Ke based on Constant dividend growth model