CUPA Liaison Hotline:
Related Hazardous Waste Links
- Hazardous Waste ID Numbers
- Report an Environmental Concern
- Fact Sheets & Publications
- Compressed Gas Cylinder Guidance
- Frequently Asked Questions
- Regulatory Assistance Office
Related CUPA Links
- Unified Program Laws and Regulations
- Cal CUPA
- U.S. EPA Compliance
- U.S. EPA Enforcement
- U.S. EPA Frequent Questions - By Topic
- U.S. Envirofacts
- Managing Textile Materials Soiled with Hazardous Waste
- Compressed Gas Cylinders
Trinity CUPA Underground Storage Tank Program
Any California business that stores hazardous substances in underground storage tanks must follow the law in California Health and Safety Code, Division 20, Chapter 6.7, and the underground regulations in the California Code of Regulations, Title 23, Division 3, Chapter 16. The purpose of the program is to promote the early detection of release from USTs and reduce the potential for contamination of groundwater. Examples are gas stations and marinas.
What is an Underground Storage Tank?
An underground storage tank (UST) is any one or combination of tanks, including associated piping that is used to contain industrial solvents, petroleum products and other hazardous substances. The tank is totally or substantially (10%) beneath the surface of the ground. The definition of "tank" is a stationary device constructed primarily of non-earthen material (e.g., wood, concrete, steel, plastic) designed to contain an accumulation of hazardous substance. A storage tank system includes the tank, associated piping, monitoring system, and containment equipment.
The program reviews permit applications and issues authorization to construct, upgrade, repair, modify or remove underground storage tank systems. Modification includes the installation or replacement of any leak-detection equipment.
Be certain to include the following items on plans that you submit to the CUPA:
Submittal must include:
Financial Responsibility Forms
UST Facilities - CUPA Forms
UST Installation Guidelines
UST Contractors' Report Forms
UST Permit Fee Summary
DTSC Trinity CUPA Office