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Provision for Asset Retirement Obligation - Fuel Tanks (Tables)

12 Months Ended

Dec. 31, 2020

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Changes in the provision for asset retirement obligation

Changes in the provision for asset retirement obligation are as follows:

Balance as of December 31, 2017	64,774
Additions (new tanks)	264
Expenditure with tanks removed	(12,752	)
Accretion expense	2,381
Balance as of December 31, 2018	54,667
Additions (new tanks)	290
Expenditure with tanks removed	(5,456	)
Accretion expense	1,741
Balance as of December 31, 2019	51,242
Additions (new tanks)	163
Expenditure with tanks removed	(4,306	)
Accretion expense	6,336
Balance as of December 31, 2020	53,435
Current	4,267
Non-current	49,168

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An entity shall disclose information about the assumptions it makes about the future, and other major sources of estimation uncertainty at the end of the reporting period, that have a significant risk of resulting in a material adjustment to the carrying amounts of assets and liabilities within the next financial year.

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