n( rate- growth rate) EFTA00625023 a.= laa la' IN &Wait=• EXHIBIT A4 DISCOUNTED FUTURE INVESTMENT RETURNS AS OF JUNE 7, 2007 Ali- IV illy, zdnients & Cost Basis' Public Total Investment Remaining Cost Basis Projected Total Exit Value 2007 PROJECTED REALIZED PROFIT 2008 2009 2010 2011 Med waste 3