Heritage-Crystal Clean, Inc Ratifies Appointment of Grant Thornton LLP as Independent Registered Public Accounting Firm

Heritage-Crystal Clean, Inc. provides parts cleaning, used oil re-refining, hazardous and non-hazardous waste disposal, emergency and spill response, and industrial and field services. The Company's segments include Environmental Services, Oil Business, and Industrial and Field Services. Environmental Services consists of the Company's parts cleaning, containerized hazardous and non-hazardous waste collection and hazardous waste disposal, wastewater vacuum, and antifreeze recycling activities. Oil Business consists of the Company's used oil collection, recycled fuel oil sales, used oil re-refining activities, and used oil filter removal and disposal services. It is engaged in the sale of re-refined base oil, re-refinery co-products, and recycled fuel oil. Industrial and Field Services consist of the Company's industrial and field services and non-hazardous waste processing and include industrial and field services, emergency and spill response and processing of non-hazardous waste.