Exhibit 3.1

CERTIFICATE OF ELIMINATION
OF
SERIES B JUNIOR PARTICIPATING PREFERRED STOCK
OF
TESORO CORPORATION

Pursuant to Section 151(g)
of the General Corporation Law
of the State of Delaware

          Tesoro Corporation, a corporation organized and existing under the laws of the State of Delaware (the “Company”), in accordance with the provisions of Section 151(g) of the General Corporation Law of the State of Delaware (the “DGCL”), hereby certifies as follows:

     1. That the Board of Directors of the Company (the “Board”), pursuant to Section 151 of the DGCL and the authority granted in the Company’s Restated Certificate of Incorporation (the “Certificate of Incorporation”), by resolution duly adopted, authorized the issuance of a series of 1,250,000 shares of Series B Junior Participating Preferred Stock, without par value (the “Series B Preferred Stock”), and established the powers, designations, preferences and relative, participating and other rights, and the qualifications, limitations or restrictions thereof, and authorized the filing of a certificate of designations (the “Series B Certificate of Designations”) with respect to such Series B Preferred Stock, which Series B Certificate of Designations was filed by the Company in the office of the Secretary of State of the State of Delaware (the “Secretary of State”) on February 4, 2008.

     2. That no shares of Series B Preferred Stock have been issued and, therefore, no shares of Series B Preferred Stock are outstanding as of the date hereof.

     3. That the Board has adopted the following resolutions:

     NOW, THEREFORE, BE IT RESOLVED, that the Board hereby determines that no shares of the Series B Preferred Stock are outstanding, and that no additional shares of such Series B Preferred Stock shall be issued pursuant to the Series B Certificate of Designations; and

     FURTHER RESOLVED, that all matters set forth in the Series B Certificate of Designations with respect to the Series B Preferred Stock be eliminated from the Certificate of Incorporation; and

     FURTHER RESOLVED, that the Chairman of the Board, President and Chief Executive Officer; the Executive Vice President and Chief Operating Officer; the Executive Vice President and Chief Administrative Officer; the Senior Vice President, General Counsel and Secretary; the Vice President,

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Chief Financial Officer; and the Vice President and Controller of the Company (collectively, the “Authorized Officers”) be, and each of them hereby is, authorized and directed to file a Certificate of Elimination with the office of the Secretary of State setting forth a copy of these resolutions whereupon all matters set forth in the Series B Certificate of Designations with respect to such Series B Preferred Stock shall be eliminated from the Certificate of Incorporation; and

     FURTHER RESOLVED, that the Authorized Officers of the Company be, and they hereby are, authorized and directed, jointly and severally, for and in the name and on behalf of the Company, to execute and deliver any and all certificates, agreements, and other documents, take any and all steps and do any and all things which they may deem necessary or advisable in order to effect the purposes of each and all of the foregoing resolutions; and

     FURTHER RESOLVED, that any actions taken by such Authorized Officers prior to the date of these resolutions that are within the authority conferred hereby are hereby ratified, confirmed and approved in all respects as the act and deed of the Company.

     4. That, accordingly, all matters set forth in the Series B Certificate of Designations with respect to the Series B Preferred Stock be, and hereby are, eliminated from the Certificate of Incorporation, as heretofore amended.

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     IN WITNESS WHEREOF, the Company has caused this Certificate to be signed by its duly authorized officer as of this 7th day of March, 2008.

By:	/s/ Charles S. Parrish
	Name:	Charles S. Parrish
	Title:	Senior Vice President, General Counsel and Secretary

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