0001000096-07-000097 NT 10-K 2 20061231 20070314 20070314 20070314 ADA-ES INC 0001223112 2890 841457335 CO 1231 NT 10-K 34 000-50216 07692704 8100 SOUTHPARK WAY B LITTLETON CO 80120 NT 10-K 1 ada12b25.txt FORM 12B25 EX-99.1 2 ada12b25exh991.txt ACCOUNTING FIRM STATEMENT