ELGIN, Ill.–(BUSINESS WIRE)–Heritage-Crystal Clean, Inc. (Nasdaq:HCCI) plans to release its financial results for the third quarter of 2021, which ended September 11, 2021, after the market close on Wednesday, October 20, 2021. The company will host a conference call on Thursday, October 21, 2021 at 9:30 AM Central Time, during which management will give a presentation focusing on the Company’s operations and financial results. Interested parties can listen to the audio webcast available thro