<SUBMISSION>
<ACCESSION-NUMBER>0001193125-07-153804
<TYPE>AW
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20070712
<DATE-OF-FILING-DATE-CHANGE>20070712
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>ADA-ES INC
<CIK>0001223112
<ASSIGNED-SIC>2890
<IRS-NUMBER>841457335
<STATE-OF-INCORPORATION>CO
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>AW
<ACT>NE
<FILE-NUMBER>333-143379
<FILM-NUMBER>07975432
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>8100 SOUTHPARK WAY B
<CITY>LITTLETON
<STATE>CO
<ZIP>80120
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>AW
<SEQUENCE>1
<FILENAME>daw.htm
<DESCRIPTION>AMENDMENT WITHDRAWL
<TEXT>
<HTML><HEAD>
<TITLE>Amendment Withdrawl</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT FACE="Times New Roman" SIZE="2">July&nbsp;12, 2007 </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT FACE="Times New Roman"
SIZE="2"><B><U>VIA EDGAR </U></B></FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Division of Corporation Finance </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman"
SIZE="2">United States Securities and Exchange Commission </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">100 F Street, N.E. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT
FACE="Times New Roman" SIZE="2">Washington, D.C. 20549 </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="10%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="7%" VALIGN="top" ALIGN="left"><FONT FACE="Times New Roman" SIZE="2">Re:</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT FACE="Times New Roman" SIZE="2">ADA-ES, Inc. </FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:13%; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">Application for Withdrawal
</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:13%; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">Amendment No. 1 to Registration Statement on Form S-3 </FONT></P> <P
STYLE="margin-top:0px;margin-bottom:0px; margin-left:13%; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">Filed July 11, 2007 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:13%; text-indent:4%"><FONT FACE="Times New Roman"
SIZE="2"><U>File No. 333-143379</U> </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Ladies and Gentlemen: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT
FACE="Times New Roman" SIZE="2">ADA-ES, Inc. (&#147;we&#148; or the &#147;Company&#148;) hereby applies for withdrawal of Pre-Effective Amendment No.&nbsp;1 to the above-captioned Registration Statement on Form S-3, which was inadvertently filed on
July&nbsp;11, 2007 as &#147;Amendment No.&nbsp;1.&#148; The Registration Statement was declared effective by the Commission on July&nbsp;10, 2007, and the filing of Amendment No.&nbsp;1 should have been filed as a post-effective amendment. Upon
withdrawal of Amendment No.&nbsp;1, we will refile a post-effective amendment to the Registration Statement to include the updated information contained in Pre-Effective Amendment No.&nbsp;1, which we believe to be of a non-material nature.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">None of the securities being registered in the registration statement have been sold, and withdrawal is in the best interests of the
Company and will not harm investors. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">Please note that we are filing this application upon advice of the Staff, to withdraw Amendment
No.&nbsp;1 to the Registration Statement ONLY, and we are NOT applying for withdrawal of the entire Registration Statement. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT FACE="Times New Roman" SIZE="2">Please do not
hesitate to contact me if you have any questions. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="40%" BORDER="0">

<TR>
<TD WIDTH="100%"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Sincerely,</FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT
FACE="Times New Roman" SIZE="2">ADA-ES Inc.</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD></TR>
<TR>
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT FACE="Times New Roman" SIZE="2">/s/ Mark H. McKinnies</FONT></TD></TR>
<TR>
<TD VALIGN="bottom"> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT FACE="Times New Roman" SIZE="2">Mark H. McKinnies</FONT></P> <P
STYLE="margin-top:0px;margin-bottom:1px"><FONT FACE="Times New Roman" SIZE="2">Senior Vice President&nbsp;&amp; CFO</FONT></P></TD></TR>
</TABLE></DIV>
</BODY></HTML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
