Exhibit 10.60 

**AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT**

This **AMENDMENT NO. 1 TO SECURITIESPURCHASE AGREEMENT** (this “**Amendment**”) is dated as of March 6, 2009, by and between ADA-ES, Inc., a Colorado corporation (the “**Company**”) and the several purchasers signatory hereto (the“**Purchasers**”). This Amendment shall be effective as of March 1, 2009. Capitalized terms used in this Amendment and not otherwise defined herein shall have the meanings ascribed thereto in the Purchase Agreement (defined below).

**RECITALS**

**WHEREAS**, the Company and the Purchasers entered into that certain Securities Purchase Agreement dated as of October 1, 2008 (the “**Purchase Agreement**”). 

**WHEREAS**, the Company and the Purchasers wish to amend the Purchase Agreement as provided herein. 

**AGREEMENT**

**NOWTHEREFORE**, in consideration of the premises and agreements herein contained and intending to be legally bound hereby, the parties hereby agree as follows: 

**1.01 Amendments.** The Purchase Agreement is hereby amended as follows: 

a. The reference to “March 2, 2009”in Section 6.03c. is deleted and replaced with “June 30, 2009 except that such date shall automatically be extended for successive 90 day periods unless and until either the Company or the Purchasers provides written notice (an“**Expiration Notice**”) to the Purchasers’ Representative or the Company, as applicable at least 10 Business Days prior to such extension that it does not wish to extend such date.” 

b. Except as modified hereby, the Purchase Agreement is reaffirmed in all respects, and all references therein to “this Agreement” shall meanthe Purchase Agreement, as modified hereby. 

**1.02 Severability.** Should any part or provision of this Amendment be held unenforceable or inconflict with the applicable laws or regulations of any jurisdiction, the invalid or unenforceable part or provisions shall be replaced with a provision which accomplishes, to the extent possible, the original business purpose of such part orprovision in a valid and enforceable manner, and the remainder of this Amendment shall remain in full force and effect and binding upon the parties hereto. 

**1.03 Governing Law.** THIS AMENDMENT (INCLUDING ANY CLAIM OR CONTROVERSY ARISING OUT OF OR RELATING TO THIS AMENDMENT) SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE, WITHOUT GIVINGEFFECT TO CONFLICT OF LAWS PRINCIPLES THAT WOULD RESULT IN THE APPLICATION OF ANY LAW OTHER THAN THE LAW OF THE STATE OF DELAWARE. 

**1.04Counterparts.**This Amendment may be executed in two or more counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument. 

[Signature Pages Follow] 

IN WITNESS WHEREOF, the parties hereto have executed this Amendment as of the day and year first abovewritten. 

 

**ADA-ES INC.,**

a Colorado corporation
By: /s/ Michael D. Durham Name: Michael D. Durham Title: CEO
[SIGNATURE PAGE TO AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT] 

**ENERGY CAPITAL PARTNERS I, LP,**

aDelaware limited partnership
By: Energy Capital Partners GP I, LLC, its general partnerBy: Energy Capital Partners, LLC, its managing memberBy: /s/ Peter Labbat Name: Peter Labbat Title: Managing Member
**ENERGY CAPITAL PARTNERS I-A, LP,**

aDelaware limited partnership
By: Energy Capital Partners GP I, LLC, its general partnerBy: Energy Capital Partners, LLC, its managing memberBy: /s/ Peter Labbat Name: Peter Labbat Title: Managing Member
**ENERGY CAPITAL PARTNERS I (TEF IP), LP,**

a Delaware limited partnership
By: Energy Capital Partners GP I, LLC, its general partnerBy: Energy Capital Partners, LLC, its managing memberBy: /s/ Peter Labbat Name: Peter Labbat Title: Managing Member
[SIGNATURE PAGE TO AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT] 

**ENERGY CAPITAL PARTNERS I-B, LP,**

aDelaware limited partnership
By: Energy Capital Partners GP I, LLC, its general partnerBy: Energy Capital Partners, LLC, its managing memberBy: /s/ Peter Labbat Name: Peter Labbat Title: Managing Member
[SIGNATURE PAGE TO AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT]