Environmental

12 Months Ended

Dec. 31, 2022

Environmental Remediation Obligations [Abstract]

Environmental

Environmental

We expensed $2.0 million, $1.9 million and $1.6 million for the years ended December 31, 2022, 2021 and 2020, respectively, for environmental remediation obligations. The accrued environmental liability related to environmental clean-up projects for which we have assumed liability or for which indemnity provided by HF Sinclair has expired reflected in our consolidated balance sheets was $19.5 million and $3.9 million as of December 31, 2022 and 2021, respectively, of which $17.5 million and $2.4 million, respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to be incurred over an extended period of time.

Under the Omnibus Agreement and certain transportation agreements and purchase agreements with HF Sinclair and or its subsidiaries, HF Sinclair has agreed to indemnify us, subject to certain monetary and time limitations, for environmental noncompliance and remediation liabilities associated with certain assets transferred to us from HF Sinclair and its subsidiaries and occurring or existing prior to the date of such transfers.