Exhibit 3.1
CERTIFICATE OF LIMITED PARTNERSHIP
OF
TESORO LOGISTICS LP
This Certificate of Limited Partnership, dated December 3, 2010, has been duly executed and is filed pursuant to Section 17-201 of the Delaware Revised Uniform Limited Partnership Act (the “Act”) to form a limited partnership (the “Partnership”) under the Act.
1. Name. The name of the Partnership is “Tesoro Logistics LP”.
2. Registered Office; Registered Agent. The address of the registered office required to be maintained by Section 17-104 of the Act is:
2711 Centerville Road, Suite 400
Wilmington, Delaware 19801
The name and the address of the registered agent for service of process required to be maintained by Section 17-104 of the Act is:
Corporation Service Company
2711 Centerville Road, Suite 400
Wilmington, Delaware 19801
3. General Partner. The name and the mailing address of the general partner are:
Tesoro Logistics GP, LLC
19100 Ridgewood Parkway
San Antonio, Texas 78259-1828
4. This Certificate of Limited Partnership shall become effective upon filing with the Secretary of State of the State of Delaware.
[Signature page follows]

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IN WITNESS WHEREOF, the undersigned has duly executed this Certificate of Limited Partnership as of the date first written above.

|  | TESORO LOGISTICS LP |  |
|  | By: |  | Tesoro Logistics GP, LLC, its general partner |  |
|  | By: |  | /s/ Charles S. Parrish Charles S. Parrish |  |
|  |  |  | Vice President, General Counsel |  |
|  |  |  | and Secretary |  |

Signature Page to Certificate of Limited Partnership of Tesoro Logistics LP