One Time Drop Letter for Tank and Line Tightness Testing

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
  • Phone number of delivery company

A request can be made by emailing the appropriate UST Inspector (Who to Contact).

DERR must receive the One Time Drop Letter request at least three business days prior to the date the delivery is needed. Our office hours are 7 a.m. to 5 p.m. Monday through Friday (closed holidays). A One Time Drop Letter request received Thursday afternoon may not be approved until Monday.

After the initial drop, the tanks may not receive subsequent deliveries of fuel until they are issued a Certificate of Compliance. 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.

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