Texas aboveground storage tank regulations sit in 30 Texas Administrative Code Chapter 334, Subchapter F, and apply to tanks that hold petroleum products. If you own a regulated tank, you have to register it with the Texas Commission on Environmental Quality (TCEQ), meet design standards that keep product contained, keep records for the life of the tank, and report any release. A separate federal spill-prevention rule may apply to the same tank at the same time, and satisfying one program does not satisfy the other.
Which Tanks Are Regulated
Under 30 TAC §334.121, a tank falls under the AST rules when it meets the state’s definition of an aboveground storage tank, contains (or has contained, or will contain) a petroleum product, and is not otherwise exempt.1Legal Information Institute. Texas Administrative Code 30 TAC 334.121 – Purpose and Applicability for Aboveground Storage Tanks The covered products are motor fuels, aviation fuels, diesel, and industrial oils. The subchapter does not sweep in every hazardous substance the way some federal programs do.
Compartmental tanks are regulated if at least one compartment holds a petroleum product, and the same applies to tanks that alternate between petroleum and non-petroleum use. One edge case: a tank that technically meets both the AST and underground storage tank definitions is treated as a UST, and the stricter UST rules apply instead.1Legal Information Institute. Texas Administrative Code 30 TAC 334.121 – Purpose and Applicability for Aboveground Storage Tanks
Which Tanks Are Exempt
Section 334.123 excludes a long list of ASTs from the subchapter. The exemptions most owners rely on:
- Farm or residential tanks of 1,100 gallons or less storing motor fuel for non-commercial use. A tank fueling your own tractors qualifies; one fueling vehicles for a side business does not.
- Heating oil tanks storing product for consumptive use on the premises where it is stored, including kerosene or diesel used mainly as heating fuel on-site.
- Septic tanks, surface impoundments, and stormwater systems, which fall outside the AST definition entirely.
- Flow-through process tanks that are part of an active manufacturing process rather than storage.
- Oil and gas exploration, development, or production tanks regulated by the Railroad Commission of Texas.
- Petrochemical plants, refineries, electric generating facilities, and bulk facilities, which are governed by other regulatory frameworks.
Pipeline facilities connected to interstate or intrastate pipelines regulated under federal or state pipeline safety laws are also excluded. If TCEQ asks, the owner or operator of a tank claimed as exempt must produce documentation supporting that claim in a timely manner, so keep the paperwork ready rather than assuming the exemption is obvious.2Legal Information Institute. Texas Administrative Code 30 TAC 334.123 – Exemptions for Aboveground Storage Tanks
Registration and Construction Notification
Every AST in existence on or after September 1, 1989 must be registered with TCEQ on authorized agency forms. Before installing a new tank, you have to submit a construction notification at least 30 days before work begins.3Texas Commission on Environmental Quality. Aboveground and Underground Storage Tank Construction Notification That is advance notice, not a request for permission, but it lets TCEQ review your plans before you build.
Two documents drive the paperwork. The Core Data Form (TCEQ-10400) gives the Central Registry baseline information about the facility, its location, and the owner and operator contacts.4Texas Commission on Environmental Quality. Core Data Form and Instructions The construction notification can be filed electronically through STEERS, the State of Texas Environmental Electronic Reporting System, or on paper using the Construction Notification Form (TCEQ-00495).3Texas Commission on Environmental Quality. Aboveground and Underground Storage Tank Construction Notification STEERS handles initial registrations, construction notices, renewals, ownership and tank updates, and financial assurance documents, and it generates an immediate acknowledgment letter useful as proof of notification.5Texas Commission on Environmental Quality. Registering and Self-Certifying Petroleum Storage Tanks
Most delays come from outdated form versions or incomplete fields. Download forms directly from the TCEQ site to be sure you have the current revision, and keep a copy of any registration submission on the facility premises. That is a regulatory requirement, not a suggestion.p>
Technical Standards for the Tank Itself
Texas imposes physical design and operational requirements meant to keep petroleum contained even when equipment fails.
Secondary Containment
Regulated ASTs must have secondary containment capable of holding the primary tank’s contents if it breaches. That usually means concrete dikes, earthen berms, or double-walled tank designs. Outdoor installations also have to account for the extra volume of rainwater accumulation.
Spill and Overfill Prevention
Each regulated tank needs equipment that prevents spills during transfers and stops overfills before they happen. Typical setups include automatic shut-off valves, high-level alarms, and overfill prevention devices that alert the operator or cut off flow as the tank nears capacity. These systems exist because human error during fuel deliveries accounts for a disproportionate share of AST incidents, and they only work if you test them.
Labeling
Each tank must carry the PST identification number TCEQ assigns during registration, and the label should identify the contents.6Texas Commission on Environmental Quality. Aboveground Storage Tanks The label ties the physical tank to the state’s records and lets an inspector or emergency responder identify what is inside on sight.
Records and Inspections
Under 30 TAC §334.130, AST owners and operators follow the same general recordkeeping requirements that apply to underground storage tanks. Legible copies of all original and amended registration documents must be kept for the entire operational life of the tank, not for a fixed number of years.7Legal Information Institute. Texas Administrative Code 30 TAC 334.130 – Recordkeeping for Aboveground Storage Tanks Owners of movable or mobile ASTs like skid tanks have slightly different rules and may maintain records under the provisions for that equipment type.
Keep records of each tank’s location, status, and the type of petroleum product stored. These records demonstrate compliance during inspections and become the central evidence if a release occurs.6Texas Commission on Environmental Quality. Aboveground Storage Tanks
Many facilities also follow the American Petroleum Institute’s Standard 653 for tank inspection intervals. API 653 is an industry standard rather than a Texas statute, but TCEQ may reference it when evaluating whether an owner is meeting maintenance obligations, and insurance policies frequently require compliance with it as a condition of coverage.
Reporting a Release
When a petroleum release occurs from a regulated AST, the owner or operator must report it to TCEQ. Section 334.129 governs release reporting and corrective action for aboveground storage tanks. Delayed notification compounds both the environmental damage and the legal exposure, so report before you finish assessing the full extent of the spill.
Federal law adds a second obligation. A discharge of oil that reaches navigable waters or adjoining shorelines has to be reported to the National Response Center, the designated federal point of contact for all oil and chemical discharges into the environment anywhere in the United States.8Environmental Protection Agency. National Response Center Missing either the state or the federal notification is a common and expensive mistake.
Federal SPCC Rules May Also Apply
Texas AST owners often focus only on TCEQ rules and overlook the federal Spill Prevention, Control, and Countermeasure (SPCC) program, which runs independently. Under 40 CFR §112.1, any facility with aggregate aboveground oil storage capacity exceeding 1,320 gallons must maintain a written SPCC Plan. Only containers of 55 gallons or greater count toward that total.9eCFR. 40 CFR 112.1 – General Applicability That threshold catches many facilities that consider themselves small operations.
SPCC Plans generally have to be reviewed and certified by a licensed Professional Engineer. Facilities that meet the definition of a “qualified facility” can self-certify instead. A facility qualifies for self-certification when its total aboveground oil storage capacity is 10,000 gallons or less and it has had no single discharge of more than 1,000 gallons, and no two discharges each exceeding 42 gallons within a 12-month period, reaching navigable waters in the prior three years.10US EPA. Is My Facility a Qualified Facility under the SPCC Rule Tier I qualified facilities, meaning no individual container over 5,000 gallons, can use a simplified EPA template. Tier II facilities, with at least one container over 5,000 gallons, prepare a full self-certified plan.
SPCC and TCEQ registration are separate obligations administered by different agencies. A 2,000-gallon diesel AST needs both TCEQ registration and an SPCC Plan.
Penalties for Non-Compliance
TCEQ has broad enforcement authority over AST violations. Failing to register a tank, keep required records, meet technical standards, or report a release can each result in administrative penalties. The agency uses a penalty methodology that weighs the severity of the violation, actual or potential environmental harm, the violator’s compliance history, and any economic benefit gained from noncompliance.11Texas Commission on Environmental Quality. Penalty Policy Penalties run on a per-violation, per-day basis, so a problem that goes weeks without correction can generate a steep cumulative assessment.
Financial penalties are only one piece. Serious violations or contamination can trigger a mandatory corrective action order requiring the owner to remediate soil or groundwater at their own expense, and cleanup costs regularly dwarf the fines. TCEQ will also refuse to issue, amend, or renew any permit, registration, or license for an entity delinquent on penalties or fees, which effectively freezes operations until the outstanding obligations are cleared.12Texas Commission on Environmental Quality. Renewing a PST Delivery Certificate
Taking a Tank Out of Service
An AST that is permanently taken out of service cannot simply be abandoned. Section 334.132 of the Texas Administrative Code sets the general provisions for AST closure. Regulated substances may not remain in a tank longer than 90 days after it stops active operation. The owner must notify TCEQ of the change in status and update the facility’s registration records.
A typical closure involves draining the tank, cleaning residual product, and conducting a site assessment to check whether operation contaminated the surrounding soil or groundwater. If contamination turns up, the owner is responsible for corrective action. Remediation after closure can be expensive, especially where petroleum has migrated into groundwater over years of undetected seepage. Budget for both the physical removal and the site assessment; skipping the assessment rarely pays off.
Annual Fees
TCEQ charges annual facility fees for regulated aboveground storage tanks under 30 TAC §334.128. Amounts depend on factors like the number and size of tanks at the facility, and they are subject to periodic adjustment, so confirm current figures with TCEQ. Unpaid fees can block renewal of registrations and other permits, which turns a minor administrative lapse into a facility-wide compliance problem.