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Site Notification

Site Notification

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

FY 2022 User Fee Assessments - Underground Natural Gas Storage (UNGS) Facilities

This notice announces that the Fiscal Year 2022 user fee assessments for underground natural gas storage facility operators were mailed on April 6, 2022.

Assessments must be paid in full, either by check (payable to U.S. Department of Transportation-PHMSA) or via the website at Please follow the 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 1% annual interest, 6% annual penalty charge, and a $12.00 per month administrative fee. (See §3717, Title 31, U.S. Code).

Mail Payments to:

c/o ESC, AMK-326

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, and tier 5/6 boundaries were randomly selected for inclusion in the lower tier.


Total Number of Wells Rate Per Operator
4 or less $ 12,308
4 to 5 $ 24,615
5 to 10 $ 30,769
11 to 16 $ 36,923
17 to 23 $ 49,231
23 to 42 $ 61,538
46 to 67 $ 73,846
71 to 109 $ 86,667
120 to 386 $ 100,000
more than 386 $ 166,667


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 for the newly established Underground Natural Gas Storage Facility Safety Account in the Pipeline Safety Fund.

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.

Last updated: Wednesday, April 6, 2022