 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 Companys operations and financial results. Interested parties can listen to the audio webcast available thro 