A Certificate of Compliance with Type-Volume Limit is a document that verifies a facility has met the requirements of a specific type and volume limit imposed by a regulatory agency. It is typically used to demonstrate to a regulatory agency that the facility is in compliance with applicable regulations. There are two main types of Certificate of Compliance with Type-Volume Limit: 1) Environmental Compliance Certificate and 2) Air Pollution Control Certificate. An Environmental Compliance Certificate is issued when a facility has met the requirements of an environmental regulation, such as the Clean Air Act, Clean Water Act, or Resource Conservation and Recovery Act. An Air Pollution Control Certificate is issued when a facility has met the requirements of an air pollution control regulation, such as the National Ambient Air Quality Standards. Both types of Certificate of Compliance with Type-Volume Limit are typically issued by a governmental agency such as the Environmental Protection Agency or a state agency.