This notice announces that the Fiscal Year 2025 user fee assessments for underground natural gas storage facility operators were e-mailed on April 3, 2025.

Assessments must be paid in full, either by check (payable to U.S. Department of Transportation-PHMSA) or via the Pay.gov website at https://pay.gov. Please follow the https://pay.gov website instructions to make your UNGS facility user fee payment online.

To ensure proper crediting when paying by check, please include the entire bill number on your check or return a copy of the bill with your payment. For late payments, you will be charged 5% annual interest, 6% annual penalty charge, and a $12.00 per month administrative fee. (See §3717, Title 31, U.S. Code).

Mail Payments to:

DOT/PHMSA
PO BOX 25770
C/O ESC/AMK-326
OKLAHOMA CITY, OK 73125

For further information please contact the User Fee Manager.

User fees for underground natural gas storage facility operators are based on the total number of wells for all of your gas storage facilities as reported to PHMSA on form 7100.4-1. Operators at tier 1/2, tier 2/3, tier 3/4, and tier 6/7 boundaries were randomly selected for inclusion in the lower tier.

The Department of Transportation's Pipeline and Hazardous Materials Safety Administration (PHMSA) under Section 12 of the Protecting our Infrastructure of Pipelines and Enhancing Safety (PIPES) Act of 2016 was mandated to issue regulations for underground natural gas storage facilities, impose user fees on operators of these facilities, and prescribe procedures to collect those fees. Per § 60302, fees collected shall be deposited in the Underground Natural Gas Storage Facility Safety Account in the Pipeline Safety Fund and the amount of the fee may be used only for an activity related to underground natural gas storage facility safety.

Note: User fees will be due 60 days after the date of the assessment. Interest, penalties, and administrative charges will be assessed on delinquent debts in accordance with 31 U.S.C. 3717.