Exhibit N PLEDGE AGREEMENT ---------------- THIS AGREEMENT, executed and delivered as of January 1, 2001, is from ENVIRONMENTAL OPPORTUNITIES FUND II L.P., a Delaware limited partnership ("Debtor"), to FUND II MGT. CO., L.L.C., a Delaware limited...Pledge Agreement • May 10th, 2001 • Environmental Opportunities Fund Lp • General industrial machinery & equipment, nec • Texas
