0001193125-10-195100 S-3/A 4 20100823 20100823 ADA-ES INC 0001223112 2890 841457335 CO 1231 S-3/A 33 333-167188 101033491 8100 SOUTHPARK WAY B LITTLETON CO 80120 S-3/A 1 ds3a.htm AMENDMENT NO. 1 TO FORM S-3 EX-5.1 2 dex51.htm OPINION OF SCHUCHAT, HERZOG & BRENMAN, LLC EX-23.2 3 dex232.htm CONSENT OF EHRHARDT KEEFE STEINER & HOTTMAN PC GRAPHIC 4 g11559ex5-1pg1.jpg GRAPHIC