LEASE AMENDMENT #3 WINDSOR PERMIAN LLC

Exhibit 10.10

LEASE AMENDMENT #3

WINDSOR PERMIAN LLC

FASKEN MIDLAND, LLC., (hereinafter called “Lessor”) and WINDSOR PERMIAN, LLC, (hereinafter called “Lessee”), for good and valuable consideration the receipt of which is hereby acknowledged, do hereby amend that certain Lease Agreement dated April 19, 2011 and Lease Amendment #1 dated June 6, 2011 and Amendment #2 dated August 5, 2011 covering approximately 5,070 square feet of Net Rentable Area located on Levels Twelve (12) and Basement of One Fasken Center at 500 West Texas Avenue, Midland, Texas 79701, also known as Suite 1210, under the following terms and conditions:

Approximately 7,067 square feet of Net Rentable Area located on Levels Twelve (12) and Basement in the Building as more fully diagrammed on the floor plans of such premises attached hereto and made a part hereof as “Exhibit B—l” and “Exhibit B—2”, on the floors indicated thereon, together with a common area percentage factor determined by Lessor (the “Leased Premises”). Said Leased Premises is comprised of approximately 1,586 square feet of Net Rentable Area in the Original Leased Premises together with approximately 1,995 square feet of Net Rentable Area (the “Basement Expansion Space”), approximately 1,489 square feet of Net Rentable Area (the “Suite 1220 Expansion Space”) and approximately 1,997 square feet of Net Rentable Area (the “Suite 1225 Expansion Space”). Said demised space represents approximately 1.676% of the Total Net Rentable Area, such Total Net Rentable Area of the Building being approximately 421,546 square feet.

Lessor agrees to provide up to five (5) additional parking spaces in the attached parking garage, at the following rates per space per month plus applicable sales tax at Lessee’s election herein:

            @ $95.00 per space per month for Officer Reserved (Basement & Level One) – space may be limited, if available

            @ $75.00 per space per month for Preferred Reserved (Level Two and above) – space may be limited, if available

            @ $55.00 per space per month for General Unreserved    

The parking spaces set forth in this section shall be for Lessee and/or Lessee’s employees and Lessor shall have the right to assign parking space as conditions permit. However, Lessor shall not be required to police the use of these spaces. Lessor may make, modify and enforce rules and regulations relating to the parking of automobiles in the parking area(s), and Lessee shall abide thereby. Lessor shall not be liable to Lessee or Lessee’s agents, servants, employees, customers, or invitees for damage to person or property caused by any act of omission or neglect of Lessee, and Lessee agrees to hold Lessor harmless from all claims for any such damage.

Witness the execution hereby this the 28^th day of September, 2011 but to be effective December 1, 2011.

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LEASE AMENDMENT #2

WINDSOR PERMIAN LLC

EXHIBIT C – 2