ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

As used in this report, the terms "Tesoro Logistics LP," "TLLP," the "Partnership," "we," "us," or "our" refer to Tesoro Logistics LP, one or more of its consolidated subsidiaries or all of them taken as a whole. References in this report to "Tesoro" or our "Sponsor" refer collectively to Tesoro Corporation and any of its subsidiaries, other than Tesoro Logistics LP, its subsidiaries and its general partner.

Organization

TLLP is a Delaware limited partnership formed in December 2010 by Tesoro and its wholly owned subsidiary, Tesoro Logistics GP, LLC ("TLGP"), our general partner.

Effective June 1, 2013, we entered into a transaction with Tesoro and TLGP pursuant to which we acquired six marketing and storage terminals located in Southern California and certain assets and properties related thereto (the "Carson Terminal Assets") from Tesoro (the "Carson Terminal Assets Acquisition"). In addition, we acquired the northwest products system assets (the "Northwest Products System") on June 19, 2013 (the "Northwest Products System Acquisition") from Chevron Pipe Line Company and Northwest Terminalling Company (collectively, "Chevron").

In 2012, we entered into the following transactions with Tesoro and TLGP, pursuant to which we acquired from Tesoro: the Martinez crude oil marine terminal assets (collectively, the "Martinez Crude Oil Marine Terminal"), effective April 1, 2012 (the "Martinez Marine Terminal Acquisition"); the Long Beach marine terminal and related short-haul pipelines, including the Los Angeles short-haul pipelines (collectively, the "Long Beach Assets"), effective September 14, 2012 (the "Long Beach Assets Acquisition"); and the Anacortes rail car unloading facility assets (collectively, the "Anacortes Rail Facility"), effective November 15, 2012 (the "Anacortes Rail Facility Acquisition"). These transactions along with the Carson Terminal Assets Acquisition are collectively referred to as "Acquisitions from Tesoro."

Principles of Combination and Consolidation and Basis of Presentation

The Acquisitions from Tesoro were transfers between entities under common control. As an entity under common control with Tesoro, we record the assets that we acquire from Tesoro on our balance sheet at Tesoro's historical basis instead of fair value. Transfers of businesses between entities under common control are accounted for as if the transfer occurred at the beginning of the period, and prior periods are retrospectively adjusted to furnish comparative information. Accordingly, the accompanying financial statements and related notes of TLLP have been retrospectively adjusted to include the historical results of the assets acquired in the Acquisitions from Tesoro for the three and six months ended June 30, 2012 with the exception of the Carson Terminal Assets since they were not operated by Tesoro prior to their acquisition by TLLP. We refer to the historical results of the Martinez Crude Oil Marine Terminal, the Long Beach Assets and the Anacortes Rail Facility, prior to each acquisition date, collectively as our "Predecessors." The See Note B for additional information regarding the acquisitions.

The accompanying financial statements and related notes present the combined results of operations and cash flows of our Predecessors at historical cost. The financial statements of our Predecessors have been prepared from the separate records maintained by Tesoro and may not necessarily be indicative of the conditions that would have existed or the results of operations if our Predecessors had been operated as an unaffiliated entity. Our Predecessors did not record revenue for transactions with Tesoro in the Terminalling, Transportation and Storage segment for assets acquired in the Acquisitions from Tesoro prior to the effective date of each acquisition. All intercompany accounts and transactions have been eliminated.

The interim condensed combined consolidated financial statements and notes thereto have been prepared by management without audit according to the rules and regulations of the Securities and Exchange Commission ("SEC") and reflect all adjustments that, in the opinion of management, are necessary for a fair presentation of results for the periods presented. Such adjustments are of a normal recurring nature, unless otherwise disclosed.

Certain information and notes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") have been condensed or omitted pursuant to the SEC's rules and regulations. However, management believes that the disclosures presented herein are adequate to present the information fairly. The accompanying interim condensed combined consolidated financial statements and notes should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2012.

U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented. We review our estimates on an ongoing basis using currently available information. Changes in facts and circumstances may result in revised estimates, and actual results could differ from those estimates. The results of operations of the Partnership, or our Predecessors, for any interim period are not necessarily indicative of results for the full year. Certain prior year balances have been disaggregated in order to conform to the current year presentation.

We have evaluated subsequent events through the filing of this Form 10-Q. See Note G for further information regarding the issuance of senior notes on August 1, 2013.

We record our financial instruments including cash and cash equivalents, receivables, accounts payable and certain accrued liabilities at their carrying value. We believe the carrying value of these financial instruments approximates fair value. Our fair value assessment incorporates a variety of considerations, including:


•	the short term duration of the instruments (none of our trade payables or trade receivables have been outstanding for greater than 90 days); and


•	the expected future insignificance of bad debt expense, which includes an evaluation of counterparty credit risk.

The fair value of our senior notes is based on prices from recent trade activity and is categorized in level 2 of the fair value hierarchy. The borrowings under our amended revolving credit facility (the "Revolving Credit Facility"), which includes a variable interest rate, approximate fair value. The carrying value and fair value of our total debt were $902.9 million and $900.8 million, respectively, as of June 30, 2013, and $354.0 million and $368.7 million, respectively, as of December 31, 2012.

Significant Accounting Policies - Goodwill

Goodwill represents the amount the purchase price exceeds the fair value of net assets acquired in a business combination. We do not amortize goodwill. We are required, however, to review goodwill for impairment annually, or more frequently if events or changes in business circumstances indicate the book value of the assets may not be recoverable. In such circumstances, we record the impairment in loss on asset disposals and impairments in our statement of combined consolidated operations. We review the carrying value of goodwill for impairment on November 1st of each year, or sooner if events or changes in circumstances indicate the carrying amount of a reporting unit may exceed fair value.

We perform a qualitative analysis to determine whether it is more likely than not that the fair value of goodwill is less than its carrying value. Some of the impairment indicators we consider include significant differences between the carrying amount and the estimated fair value of our assets and liabilities; macroeconomic conditions such as a deterioration in general economic condition or limitations on accessing capital; industry and market considerations such as a deterioration in the environment in which we operate and an increased competitive environment; cost factors such as increases in labor or other costs that have a negative effect on earnings and cash flows; overall financial performance such as negative or declining cash flows or a decline in actual or planned revenue or earnings compared with actual and projected results of relevant prior periods; other relevant events such as litigation, changes in management, key personnel, strategy or customers; the testing for recoverability of our long-lived assets and a potential decrease in share price. We evaluate the significance of identified events and circumstances on the basis of the weight of evidence along with how they could affect the relationship between the reporting unit's fair value and carrying value, including positive mitigating events and circumstances. If we determine it is more likely than not that the fair value of goodwill is less than its carrying amount, then a second step is performed to quantify the amount of goodwill impairment. If impairment is indicated, a goodwill impairment charge is recorded to write the goodwill down to its implied fair value. See Note B for additional information regarding goodwill associated with the Northwest Products System Acquisition.