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Underground Storage Tanks (UST) Program

One Time Drop Letter for Tank and Line Tightness Testing

Administered by the Underground Storage Tank Branch
of the Division of Environmental Response and Remediation

Before a tank can receive a Certificate of Compliance, the integrity of the tank and associated piping must be evaluated through a tank and line tightness test. To receive fuel for the test, the owner or installer must contact the DERR for authorization of a one-time delivery (One Time Drop Letter).

Information to submit to request a One Time Drop Letter:

  • Facility and owner name, facility I.D. or facility address, and phone number
  • Date(s) delivery of fuel is needed
  • Name of company delivering fuel and contact person
  • Fax number of delivery company

Request can be made by fax (801) 359-8853 or phone (801) 536-4100 or e-mailed to the appropriate UST Inspector (Who to Contact).

DERR/UST must have 24 hour notice prior to the date the delivery is needed. Our office hours are 7 a.m. to 6.p.m. Monday thru Thursday (closed holidays). A One Time Drop Letter request received Thursday afternoon may not be approved until Monday. Requests can be made via e-mail 24-7 (Who to Contact).

After the initial drop, the tanks may not receive subsequent deliveries of fuel until they are issued a Certificate of Compliance and are marked with a proper identification tag at the fill pipe. The owner of the facility and the delivery company will be subject to a $500 fine for each delivery made to an UST without a Certificate of Compliance (other than the One Time Drop).

If you have questions, please contact the DERR UST Section at (801) 536-4100.