Item 9A. CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) under the Exchange Act was carried out under the supervision and with the participation of our management, including our chief executive officer and chief financial officer. Based upon that evaluation, the chief executive officer and chief financial officer concluded that the design and operation of these disclosure controls and procedures were effective as of December 31, 2018, the end of the period covered by this Annual Report on Form 10-K.

Internal Control over Financial Reporting and Changes in Internal Control over Financial Reporting

On October 1, 2018, the Company completed its acquisition of Andeavor. Accordingly, the acquired assets and liabilities of Andeavor are included in our consolidated balance sheet as December 31, 2018 and the results of its operations and cash flows are reported in our consolidated statements of income and cash flows from October 1, 2018 through December 31, 2018. We have elected to exclude Andeavor from the Company’s assessment of internal control over financial reporting as of December 31, 2018. During the quarter ended December 31, 2018, there have been no other changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. See Item 8. Financial Statements and Supplementary Data – Management’s Report on Internal Control over Financial Reporting and – Report of Independent Registered Public Accounting Firm, which reports are incorporated herein by reference.