
Exhibit 32.1

Certification of Chief Executive and Chief Financial Officer of ADA-ES, Inc.
Pursuant to 18 U.S.C. Section 1350

I, Michael D. Durham, certify that:

In connection with the Annual Report on Form 10-KSB of ADA-ES, Inc. (the
"Company) for the period ended December 31, 2004 as filed with the Securities
and Exchange Commission on the date hereof (the "Report"), I, Michael D. Durham,
Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:

1) the Report fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934, as amended; and

2) the information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company.

/s/ Michael D. Durham
---------------------
Name: Michael D. Durham
Title: President
Date: March 25, 2005


I, Mark H. McKinnies, certify that:

In connection with the Annual Report on Form 10-KSB of ADA-ES, Inc. (the
"Company) for the period ended December 31, 2004 as filed with the Securities
and Exchange Commission on the date hereof (the "Report"), I, Mark H. McKinnies,
Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:

1) the Report fully complies with the requirements of Section 13(a) or 15(d) of
the Securities Exchange Act of 1934, as amended; and

2) the information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company.


/s/ Mark H. McKinnies
---------------------
Name: Mark H. McKinnies
Title: CFO
Date: March 25, 2005


