image:filtered light in the forest

Toxics Cleanup Program


UNDERGROUND STORAGE TANKS (USTs)


Just the Checklists...


Icon: Checklist

Just the Forms...


Icon: Forms


Galvanic Cathodic Protection Evaluation Checklist


Impressed Current Cathodic Protection Evaluation Checklist


Retrofit/Repair Checklist


Site Check/Site Assessment Checklist


Leak Testing Checklist 1

Alternative Fuel Installation or Conversion Checklist2




30-Day Notice


Business License Application


Fuel Requests for USTs


Operational Status Notice


Permanent Closure Notice3


Temporary Closure Notice3


UST Addendum



All forms, checklists and reports must be submitted to:

Department of Ecology
Underground Storage Tank Section
P.O. Box 47655
Olympia, WA  98504-7655

Check with your local city and county authorities to determine if there are additional requirements associated with your UST System(s).




1Formerly "Tightness Testing Checklist" and “Release Detection and Prevention Equipment Testing Checklist”
2For tanks storing >B20 (20% biodiesel) or >E10 (10% ethanol-blended) fuels
3Formerly "Closure & Site Assessment Notice"