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30 TAC §334.7: tank registration

Every regulated underground storage tank must be registered with the state on its forms. When something about the tank system changes, the owner or operator must send written notice of the change within 30 days.

What the rule says

Quoted word for word from the Texas Administrative Code, Title 30, as published by the Texas Secretary of State. Read on 10/30/2026.

30 TAC §334.7(a)(1)

(1) All underground storage tanks (USTs) in existence on or after September 1, 1987, must be registered with the agency on authorized agency forms in accordance with subsection (e) of this section, except for those tanks which:

30 TAC §334.7(d)(1)

(1) The owner or operator of a UST system must provide written notice to the agency of any changes or additional information concerning such system. Types of changes or additional information subject to this requirement must include, but are not limited to, the following: (A) change in owner or operator, or change in owner or operator information (e.g., authorized representative, mailing address, and/or telephone number), provided that: (i) amended registrations of owner or operator information (other than ownership transfers) may be submitted by the owner, operator, or an authorized representative of the owner or operator; and (ii) amended registrations reflecting UST ownership transfers must be provided by the new UST owner or a legally-authorized representative of the new UST owner (i.e., registrations of ownership transfers submitted by others will be returned and will not be recorded); (B) change in the operational status of any tank system (e.g., in service, temporarily out-of-service, removed from the ground, permanently abandoned in-place, change-in-service to provide for the storage of a substance other than a regulated substance, or change to exempt or excluded status); (C) change in the type of stored regulated substance, including switching to a regulated substance containing: (i) greater than 10% ethanol; or (ii) greater than 20% biodiesel; (D) installation of additional tanks and/or ancillary equipment at an existing facility; (E) change in the type of piping for an existing tank; (F) the addition of, or a change in the type of, internal or external corrosion protection for the tanks, piping, and/or ancillary equipment; (G) the addition of, or a change in the type of, spill and overfill prevention equipment for the tanks; (H) the addition of, or a change in the type of, release detection equipment or methods for the tanks and/or piping; (I) change in the location of documents and records for the facility; and (J) change in financial assurance information related to the facility as specified in Chapter 37, Subchapter I of this title (relating to Financial Assurance for Petroleum Underground Storage Tank Systems).

30 TAC §334.7(d)(3)

(3) Notice of any change or additional information must be filed with the agency within 30 days from the date of the occurrence of the change or addition, or within 30 days from the date on which the owner or operator first became aware of the change or addition, as applicable.

Full text: 30 TAC §334.7 (Registration for Underground Storage Tanks (USTs) and UST Systems)

What proof usually looks like

Your letter sets what to show and by when. Match each item on it to records like these:

• A copy of your registration form as filed.
• Written notice of each change (a new owner or operator, a tank taken out of service, a different stored product, new tanks or equipment), with the date you sent it.
• Something that shows the date of each change, so the 30 days can be checked.

Common mistakes

• A change made at the site, but no notice sent.
• Notice sent more than 30 days after the change.
• Information on the form that no longer matches the tanks in the ground.
• A form that is not dated and signed.

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