**Exhibit 31.1**

 

**CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER**

 

I, Paul M. Rady, certify that:

 

1.                                      I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K for the year ended December 31, 2010 of Antero Resources LLC;

 

2.                                      Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

 

3.                                      Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of Antero Resources LLC as of, and for, the periods presented in this report;

 

4.                                      The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for Antero Resources LLC and have:

 

a.                                      Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to Antero Resources LLC, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

 

c.                                       Evaluated the effectiveness of Antero Resources LLC’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

 

d.                                      Disclosed in this report any change in Antero Resources LLC’s internal control over financial reporting that occurred during Antero Resources LLC’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, Antero Resources LLC’s internal control over financial reporting.

 

5.                                      The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to Antero Resources LLC’s auditors and the audit committee of Antero Resources LLC’s board of directors (or persons performing the equivalent functions):

 

a.                                      All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect Antero Resources LLC’s ability to record, process, summarize and report financial information; and

 

b.                                      Any fraud, whether or not material, that involves management or other employees who have a significant role in Antero Resources LLC’s internal control over financial reporting.

 
| Date: April 11, 2012                                              |   |   |
|-------------------------------------------------------------------|--------|--------|
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| /S/ Paul M. Rady                                                  |   |   |
| Paul M. Rady*Chairman of the Board and Chief Executive   Officer* |   |   |

 

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