ELGIN, Ill., July 21, 2010 (GLOBE NEWSWIRE) -- Heritage-Crystal Clean, Inc. (Nasdaq:HCCI) plans to release its 2010 second quarter financial results, which ended June 19, 2010, after the market close on Wednesday July 28, 2010.

The company will host a conference call on Thursday July 29, 2010 at 9:30 AM Central Time, during which management will make a brief presentation focusing on the company's operations and financial results.

Interested parties can listen to the audio webcast available through our company website, http://www.crystal-clean.com/investor/FinancialReleases.asp , and can participate in the call by dialing (720) 545-0014.

About Heritage-Crystal Clean, Inc.

Heritage-Crystal Clean, Inc. provides parts cleaning and hazardous and non-hazardous waste services to small and mid-sized customers in both the manufacturing and automotive service sectors. Our service programs include parts cleaning, containerized waste management, used oil collection, and vacuum truck services. These services help our customers manage their used chemicals and liquid and solid wastes, while also helping to minimize their regulatory burdens. Our customers include businesses involved in vehicle maintenance operations, such as car dealerships, automotive repair shops, and trucking firms, as well as small manufacturers, such as metal product fabricators and printers. Heritage-Crystal Clean, Inc. is headquartered in Elgin, Illinois, and operates through 62 branches serving over 41,000 customer locations.

The Heritage-Crystal Clean, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4974
CONTACT:  Heritage-Crystal Clean, Inc.          Greg Ray, Chief Financial Officer and VP Business Management           (847) 836-5670          http://www.crystal-clean.com

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