An Underground Storage Tank endorsement is required for owners of storage tanks with all of the following:
Note: Some tanks may be exempt.
Note: If using insurance, attach the complete insurance policy from the provider, which includes the certificate as set forth in WAC 173-360A-1083. The certificate holder should be:
Business Licensing Service
PO Box 9034
Olympia WA 98507-9034
If you are not using liability insurance, attach a Certificate of Financial Responsibility as set forth in WAC 173-360A-1096.
See also the Underground Storage Tanks – Business Bulletin.
Underground Storage Tank
$204.13 per tank
Weighing and Measuring Device
|State tax registration||$0|
|Registering your business name as a trade name||$5|
|Business License Application fee||Variable fee|
Add a state endorsement to your business
Apply for a new business license
Setting up your business licensing and tax account
How to add a state endorsement
Complete the licensing requirements above and mail to: