Transwestern Pipeline Company, LLC

Third Revised Volume No. 1

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Effective Date: 05/28/2010, Docket: RP10-650-000, Status: Effective

Seventh Revised Sheet No. 15 Seventh Revised Sheet No. 15

Superseding: Sixth Revised Sheet No. 15

Statement of Non-Conforming Service Agreements

The contracts listed below have been accepted by the Federal Energy Regulation Commission as non-conforming

service agreements.

(i) Unocal Keystone Gas Storage, LLC Operator Balancing Agreement dated April 29, 2003; Contract No.

100653.

(ii) Southwest Gas Transmission Company Operator Balancing Agreement dated September 1, 2006; Contract

No. 101444.

(iii) Arizona Public Service Company Operator Balancing Agreement dated January 15, 2008; Contract No.

102078.

(iv) Southwest Gas Corporation Operator Balancing Agreement dated January 15, 2008; Contract No. 102070.

(v) UNS Gas Inc. Operator Balancing Agreement dated January 15, 2008; Contract No. 102071.

(vi) Gila River Power L.P. Operator Balancing Agreement dated January 15, 2008; Contract No. 102079.

(vii) Salt River Project Agricultural Improvement and Power District Operator Balancing Agreement dated

January 15, 2008; Contract No. 102080.

(viii) El Paso Natural Gas Company Operator Balancing Agreement dated February 20, 2009; Contract No.

102474.

(ix) Southwest Gas Corporation Firm Natural Gas Transportation Agreement dated January 15, 2008;

Contract No. 102444.

(x) Gila River Power L.P. Firm Natural Gas Transportation Agreement dated January 15, 2008; Contract

No. 102445.

(xi) Arizona Public Service Company Firm Natural Gas Transportation Agreement dated January 15, 2008;

Contract No. 102446.

(xii) UNS Gas Inc. Firm Natural Gas Transportation Agreement dated January 15, 2008; Contract No.

102447.

(xiii) Salt River Project Agricultural Improvement and Power District Firm Natural Gas Transportation

Agreement dated January 15, 2008; Contract No. 102448.

(xiv) Mojave Pipeline Company Operational Balancing Agreement dated December 1, 2001; Contract No. 27755

(xv) Natural Gas Pipeline Company of America Operational Balancing Agreement dated April 1, 2002;

Contract No. 27854

(xvi) Natural Gas Pipeline Company of America Operational Balancing Agreement dated April 1, 2002;

Contract No. 27855

(xvii) Questar Southern Trails Pipeline Company Operational Balancing Agreement dated May 24, 2002;

Contract No. 100043