Underground Storage Tank Program
- UST Program Contacts
- DEQ Staff Directory
- Laws & Rules
- Map Sites/Query Data
- UST Construction Permit Info
- Licensed Individuals
- Tank & CP Tests
- License Testing & Training
Installer/Remover Info
- Inspector Info
- Facility Summary Sheets
- Compliance Inspection Forms
- Compliance Inspector Information
- Operating Permit Status
- Owner Info
- Financial Responsibility
- Owner Info - Notification & Fees
- Land Transactions
- Inactive Status
- MUST Newsletters
- Compliance Inspection Info
- Operating Permit Status
- Do Not Fill List
- Additional Info
- Find UST/LUST Facilities
- UST Performance Measures
- Leaks and Spills
Inventory Control and Tank-Tightness Testing
Inventory control and tank-tightness testing can only be used for 10 years after a new installation or upgrade of an existing UST. When used in conjunction with inventory control, tank-tightness tests are required once every five years during this 10-year period.
Line Tightness Testing
Line-tightness testing is required annually in conjunction with automatic line leak detectors on pressure lines. U.S. suction lines (line slopes to tank with a foot valve in the tank) require a line-tightness test every three years. European style suction (line slope to tank with no foot valve in tank or line) do not need line-tightness testing.
Corrosion Protection
If your UST system or any part of it is protected by either sacrificial anodes or an impressed current system, the cathodic protection must be tested at least every three years to make sure it is still functioning properly. The required tests can be conducted by a qualified cathodic protection tester. The cathodic protection tester will take soil potential readings as directed by the DEQ and provide the tank owner with the results. These results should be kept at the facility.
Click Here to go to the National Work Group On Leak Detection Evaluation Website to learn more or click below to contact a local firm.
