Exhibit 3.3

State of Delaware

Secretary of State

Division or Corporations

Delivered 02:10 PM 06/12/2007

FILED 02:10 PM 06/12/2007

SRV 070699133 — 4369771 FILE

CERTIFICATE OF FORMATION
OF
CVR GP, LLC

     This Certificate of Formation, dated June 12, 2007, has been duly executed and is filed pursuant to Section 18-201 of the Delaware Limited Liability Company Act (the “Act”) to form a limited liability company under the Act.

     1. Name. The name of the limited liability company is CVR GP, LLC.

     2. Registered Office; Registered Agent. The address of the registered office required to be maintained by Section 18-104 of the Act is:

1209 Orange Street
Wilmington, Delaware 19801

The name and the address of the registered agent for service of process required to be maintained by Section 18-104 of the Act are:

The Corporation Trust Company
1209 Orange Street
Wilmington, Delaware 19801

     EXECUTED, as of the date written first above.

	By:	/s/ E. Ramey Layne
		E. Ramey Layne
		Authorized Person