The Company evaluates goodwill for impairment annually on July 1 and upon the occurrence of certain triggering events or substantive changes in circumstances that indicate that the fair value of goodwill may be impaired. Impairment of goodwill is tested at the reporting unit level. A reporting unit is an operating segment or one level below an operating segment (referred to as a “component”). A component of an operating segment is required to be identified as a reporting unit if the component is a business for which discrete financial information is available and segment management regularly reviews its operating results. There were no triggering events identified during the first nine months of fiscal 2022 requiring an interim goodwill impairment test, and the Company did not record a goodwill impairment charge in any of the periods presented.

The gross change in the carrying amount of goodwill for the nine months ended May 31, 2022 was as follows (in thousands):


	Goodwill
August 31, 2021	$	170,304
Additions(1)		84,040
Measurement period adjustments		227
Foreign currency translation adjustment		(60	)
May 31, 2022	$	254,511

(1)

Additions to goodwill relate to the acquired Columbus Recycling business (approximately $62 million) and the Encore Recycling business (approximately $22 million) and are exclusive of measurement period adjustments presented separately. The amount of acquired goodwill in each acquisition was provisional as of May 31, 2022. See Note 3 - Business Acquisitions.

Accumulated goodwill impairment charges were $471 million as of both May 31, 2022 and August 31, 2021.