RYDER SCOTT COMPANY			FAX (303) 623-4258
	PETROLEUM CONSULTANTS
	621 SEVENTEENTH STREET	SUITE 1550	DENVER, COLORADO 80293	TELEPHONE(303) 623-9147

Exhibit No. 23.1

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS

As independent petroleum and natural gas consultants, we hereby consent to the reference of our name in the Report on Form 10-K for the years ending December 31, 2007 and December 31, 2006 of PDC 2004C (the "Partnership"). We have no Interest of a substantial or material nature in the Partnership, or in any affiliate. We have not been employed on a contingent basis, and we are not connected with the Partnership, or any affiliate as a promoter, underwriter, voting trustee, director, officer, employee or affiliate.

/S/ RYDER SCOTT COMPANY LP

RYDER SCOTT COMPANY LP

Denver, Colorado

July 29, 2009

 

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