What Is An Underground Storage Tank Septic Tceq? (Solved)

A UST is defined under Title 30, Texas Administrative Code (TAC), Section 334.2 as any one or combination of underground tanks and any connecting underground pipes used to contain an accumulation of regulated substances, the volume of which, including the volume of the connecting underground pipes, is ten percent or

Frequent Questions About Underground Storage Tanks | US EPA

  • Farm and residential tanks of 1,100 gallons or less capacity holding motor fuel used for noncommercial purposes Tanks storing heating oil used on the premises where it is stored Tanks on or above the floor of underground areas, such as basements or tunnels Septic tanks and systems for collecting storm water and wastewater

What is considered an underground storage tank?

An underground storage tank (UST) system is a tank (or a combination of tanks) and connected underground piping having at least 10 percent of their combined volume underground. Septic tanks and systems for collecting storm water and wastewater. Flow-through process tanks. Tanks of 110 gallons or less capacity.

Why are underground storage tanks bad?

Underground storage tanks hold toxic material, such as gasoline and waste oil, which contain dangerous substances that can cause cancer and harm developing children. Chemicals in USTs can quickly move through soil and pollute groundwater. There is no safe level of exposure to many of these toxic substances.

What is the lifespan of an underground storage tank?

The USTs most impacted are those 25 years and older, especially single-walled steel with cathodic protection (or similar construction). The industry views the average useful life span of tanks between 26 and 30 years.

Are underground storage tanks hazardous?

Several million underground storage tank systems (USTs) in the United States contain petroleum or hazardous chemicals. Tens of thousands of these USTs, including their piping are currently leaking. Many more are expected to leak in the future. Leaking USTs can cause fires or explosions that threaten worker’s safety.

How do you identify the location of a facilities underground storage tank?

Here are 5 easy ways of identifying UST’s in your yard!

  1. Check For Pipes In Your Basement.
  2. Check For Pipes In Your Yard.
  3. Look For Coffee Cans.
  4. Ground Penetrating Radars.
  5. Check For Depressions In Your Yard.

How would a seller inform a buyer that the property has an underground storage tank?

How would a seller inform a buyer that the property has an underground storage tank? The seller must include the information on the property condition disclosure.

What’s the typical useful life of an underground storage tank real estate?

Average life of underground tanks is 20 years. Unless there is documented proof the tank is less than 20 years old, it is most likely much older than that and needs to be dealt with prior to being sold. It is becoming more and more difficult to sell a house with an old UST.

How deep are underground storage tanks?

5.7 Depth of Underground Storage Tanks. The maximum distance between the top and bottom plates of an underground flammable and combustible liquid storage tank shall not exceed 40 feet (12 192 mm).

What is the greatest concern over underground storage tanks?

The greatest potential hazard from a leaking UST is that the petroleum or other hazardous substance can seep into the soil and contaminate groundwater, the source of drinking water for nearly half of all Americans.

How often do underground gas tanks need to be replaced?

On average, tanks can last around 25 years. That said, if tanks are close to “retirement age” and show signs of corrosion and rust, then it’s probably time to purchase new tanks. Replacing USTs can require a substantial investment in terms of equipment, construction costs, and downtime.

How much does it cost to remove underground gas tanks?

The removal cost of a residential underground oil tank ranges from $1,000 and $2,500 depending on size. Typical residential oil storage tanks are 275, 500, or 1,000-gallons.

Are underground oil tanks safe?

Risk of leakage: Any home with oil-fueled heat is at risk for a ruptured oil tank. However, underground oil tanks have a higher chance of causing massive contamination than above-ground storage tanks, says Deborah Goldberg, an insurance expert with Expert Insurance Reviews.

Basics for Septic Systems

On-site sewage facilities, also known as OSSFs, must be developed on the basis of a site evaluation that takes into consideration the specific requirements of the location. The system of choice for around 20% of new homes being built in Texas is the radon mitigation system. An On-Site Sewage Facility (OSSF), sometimes known as a “septic system,” is a sewage treatment system that is located on a property. As a result of the unexpected surge in new housing construction in suburban and rural regions, more Texas families are reliant on an OSSF for the treatment and disposal of their domestic sewage.

Systems that accomplish their jobs well while also protecting the environment are made possible by new methods to design and oversight of OSSFs.

A number of soil tests are ruling out traditional systems, which separate liquids from solid waste in a holding tank and then distribute them throughout a drainfield using underground pipes or other proprietary items in many regions of the state.

However, because the majority of Texas soils are incapable of adequately absorbing contaminants, different treatment procedures are necessary.

Any work on an OSSF must be done by a licensed installer or, in the case of a single-family property, by the homeowner himself or herself.

Who checks to make sure the requirements are followed?

Local governments in most parts of the state have taken on the obligation of ensuring that OSSFs in their jurisdictions comply with all applicable state regulations and procedures. There are several local governments that serve as “authorized agents” (AA) of the Texas Commission on Environmental Quality, which is in charge of managing the OSSF Program. A “designated representative” (DR) assists the AA in carrying out their tasks, which include examining plans for constructing, changing, extending, or repairing each OSSF; granting permits; and checking the system’s installation, among others.

The OSSF’s authorized agents and representatives also investigate and respond to complaints to verify that the OSSF is in compliance with minimal requirements.

After that, the agent can file a criminal complaint with the local judge of the peace, who will then investigate the matter.

Industrial or hazardous waste cannot be introduced into an OSSF; instead, this waste will be handled in the soil, destroying the OSSF by actually killing the microorganisms that break down the biosolids and causing it to fail.

Keep in mind that septic systems are intended to manage human waste rather than chemicals.


Local governments in most parts of the state have taken on the obligation of ensuring that OSSFs in their jurisdictions adhere to all applicable state regulations and standards. In order to operate the OSSF Program, many local governments are “authorized agents” (AAs) of the Texas Commission on Environmental Quality. Many times, the AA is assisted by a “designated representative” (DR) who helps them with their tasks, which include examining plans for constructing, changing, extending, or repairing each OSSF; granting permits; and inspecting system installations.

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As part of this process, authorized agents and representatives address complaints to ensure that an OSSF complies with industry basic requirements.

A criminal complaint can then be filed with the judge of the peace in the area by the agent.

Industrial or hazardous waste cannot be introduced into an OSSF; instead, it will be handled in the soil, causing the OSSF to fail by physically killing the microorganisms that break down the biosolids in the first place.

Where can I find more information and assistance?

The Small Business and Local Government Assistance Section of the Texas Commission on Environmental Quality (TCEQ) provides free, confidential assistance to small enterprises and local governments seeking to comply with state environmental requirements. Call us at (800) 447-2827 or visit our website at TexasEnviroHelp.org for more information.

Petroleum Storage Tanks (PSTs)

Registration of Petroleum Storage Tanks: Do I Need to Be Licensed? A brief review of the criteria for underground and aboveground storage tanks that are used to store gasoline or other petroleum-based compounds is provided. Links to Web resources that provide further information on various needs are provided. Underground storage tanks are required to be registered and self-certified. Obtaining self-certification for underground storage tanks that contain motor gasoline in accordance with state regulations.

Information Regarding PST Registration When looking for current PST data and delivery certificates, use the Central Registry query to find them.

Operating Requirements and Cleanup

The PST Super Guide: A Comprehensive Guide to Complying with the Tax Act Installing, replacing, uninstalling, or registering a PST are all covered in this thorough reference. It also includes information on purchasing, selling, or running a facility with a PST. Notification of the construction of above-ground and underground storage tanks Requirements for informing the Texas Commission on Environmental Quality (TCEQ) about proposed work on subsurface or aboveground storage tanks Forms and rules that are applicable are linked to.

Financial assurance standards for petroleum underground storage tank systems, as well as contact information, are detailed below.

As detailed above, requirements differ from county to county.

Cleaning up after a leaking petroleum storage tank Chemical and biological contaminant removal from underground and aboveground storage tanks that have been contaminated by spills, leaks, or other discharges of petroleum chemicals or hazardous compounds.

Septic Tank Pumping

Septic systems are required for private residences and commercial structures that are not linked to a city sewer system in order to adequately siphon waste from all outgoing drains and drain fields. TWC advises that your septic system be examined routinely, and that your septic tank be pumped (cleared out) at least once every two to three years, or as needed based on your consumption, according to the manufacturer’s recommendations.

MaintenanceSeptic Tank Pumping

If you find that your toilet flushes or shower drains more slowly than usual, or if you observe discoloration in your water, your septic tank may require maintenance. Failure to properly monitor and schedule septic tank pumping can result in a decline in the efficiency of the system as well as a variety of major concerns, including the following:

  • You may need to get your septic tank serviced if the toilet flushes or the shower drains more slowly than usual, or if you detect discolored water. If septic tank pumping is not performed on a regular basis and is not properly monitored, it can lead to a variety of major concerns, including:

In your septic system, there are four major components that you should be aware of:

Septic Tank

In most cases, the underground septic tank is built of plastic, concrete, or fiberglass, and it is the most important component of a septic system. A septic tank serves as a container for solid and liquid waste material that departs your home, and it must be drained at least once every two years to remove waste accumulation.

Connective Piping

In most cases, the underground septic tank is built of plastic, concrete, or fiberglass, and it is the most important component of the septic system. The tank serves as a holding tank for solid and liquid waste material that departs your house, and it must be pumped out every couple of years in order to remove waste accumulation from the system.

Drain Field

Multiple pipelines deliver water waste to a drain field, where it is treated to eliminate germs and other dangerous substances before being released into the environment.


During the last step of the septic pumping process, purified wastewater is absorbed by the surrounding soil. As the wastewater filters through the soil, any toxins that remain are eliminated from the water.

Waste Removal

Texas Waste Co., is accessible by appointment or in an emergency to offer pumping trucks to your local plumber or septic service provider in order to suction waste from the septic tank and dispose of it properly. Waste is collected and held in the truck’s mobile reservoir before being delivered to an appropriate disposal facility. We are accustomed to dealing with the following materials:

  • Residential, commercial, aerobic systems, conventional systems, low pressure dosing systems, nut shell systems, oilfield septic pumping, holding tanks, and other services

Storing Petroleum Products to Protect Groundwater

Kristine A. Uhlman, Extension Program Specialist-Water Resources; Diane E. Boellstorff, Corresponding Author, Assistant Professor and Extension Water Resources Specialist; Mark L. McFarland, Professor and Associate Department Head, Department of Soil and Crop Sciences; John W. Smith, Extension Program Specialist, Texas A M Department of Soil and Crop Sciences; The Texas A M University System; and Aboveground storage tanks (AST) and underground storage tanks (UST) are commonly used to store liquid petroleum products such as gasoline, diesel, and heating fuels (UST).

  1. Groundwater may be contaminated by as little as 1 gallon of gasoline, which can pollute a million gallons of water.
  2. According to the United States Environmental Protection Agency (EPA), roughly one in every four underground storage tanks (USTs) in the country may now be leaking.
  3. Tanks and pipelines that are more recent in age might potentially leak, particularly if they were placed incorrectly.
  4. Millions of liters of groundwater may be found beneath the surface of a normal farm, ranch, or residential property.
  5. The decisions you make about the management of your property can have a significant impact on the quality of your drinking water as well as the health of your family.

The consequences of your actions might also have an impact on your legal liabilities and property worth. Except for the following, the Texas Commission on Environmental Quality (TCEQ) controls all ASTs and USTs:

  • Small-capacity USTs or ASTs, such as those used on farms or in residential areas, that have a capacity of less than 1,100 gallons and are used to store motor gasoline for noncommercial reasons
  • The heating of oil tanks for consumptive consumption at the storage location

Those tanks are exempt from the Texas Commission on Environmental Quality’s requirements, registration, testing, recordkeeping, and reporting. Exemptions and rules are detailed in Title 30, Chapter 334 of the Texas Administrative Code, which is available online. If your tank is located in a county where the Edwards and Trinity Aquifers recharge, you may be subject to additional aquifer protection standards. The Edwards Aquifer Authority (EAA) is responsible for regulating ASTs and USTs that are located in, above, or on the recharge zone of the Edwards Aquifer.

  • Storage tanks in the zone that were in place before to that date must be registered with the Environmental Protection Agency (EPA) ( storage-tanks).
  • These guidelines are for storing diesel, gasoline, kerosene, and liquid heating fuels in above-ground storage tanks (AST) or underground storage tanks (UST) that are free from TCEQ regulation, as stated above.
  • For information on non-exempt tanks, consult the Petroleum Storage Tank Super Guide: A Comprehensive Guide to Compliance in Texas, which contains guidelines on these tanks.
  • It is possible that answering the questions in Table 1 can assist you in identifying potential concerns related with petroleum storage on your land.
  • If you answered yes to any of the questions or did not know the answer to any of them, you may be dealing with a high-risk issue on your property.
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1. Do you store liquid petroleum supplies within 100 feet of your water well?

The distance between your liquid petroleum storage tank and your water well is the most crucial consideration when choosing a location for your tank. According to state rules, petroleum storage tanks must be located at least 100 feet away from a water well. There must be at least 100 feet between a new tank or filling location and an existing water well. If at all feasible, the tank should be located on the other side of the hill from the well.

2. Do you store liquid petroleum supplies within 50 feet of a building or combustible object?

Tanks (particularly aboveground tanks) should not be located closer than 50 feet from any building in order to avoid the risk of explosion or fire. It is possible for vapors to gather in or beneath neighboring storage structures. These fumes constitute a fire threat, and they can also have a negative impact on human health. When selecting a tank location, keep the following considerations in mind:

  • Tanks (particularly aboveground tanks) should not be placed within 50 feet of any building in order to avoid an explosion or fire. Vaporizable gases can build up in or beneath neighboring storage facilities. They can cause a fire and can be harmful to human health if inhaled or inhaled in large quantities. Think about the following points while selecting a tank location:

3. Do you have a bare steel tank that is more than 15 years old?

Tanks (particularly aboveground tanks) should not be placed within 50 feet of any building in order to avoid the risk of explosion or fire.

It is possible for vapors to gather in or under adjoining storage structures. These fumes can cause a fire and have a negative impact on human health. When selecting a tank site, keep the following considerations in mind:

4. Does your tank lack proper spill or overfill protection?

All tanks should be equipped with spill and overfill prevention devices. An impermeable catch basin around the tank, ideally made of waterproof material, is commonly used for spill prevention. Construct an earthen or concrete dikes around the tank and a catch pad that has a capacity of 125 percent of the tank’s capacity. Overfill protection can be in the form of a warning device, such as a buzzer, or a preventative device, such as an automated shutdown, depending on the situation.

To keep an eye out for leaks in a tank, do the following:

  • Internal or exterior instruments for automated tank measurement or for monitoring groundwater and vapor should be installed. Check the tank’s level on a regular basis. Always take your measurements at around the same time of day to reduce the impact of daily temperature variations, which is especially important for ASTs during the summer. It becomes clear that there is a leak when the level of the tank declines over time despite the fact that no gasoline has been removed. Despite the fact that this approach cannot detect small leaks in the early stages, it may alert you to additional investigation. Using a measuring stick, determine the amount of liquid remaining in the tank. Maintaining caution, however, to ensure that the stick does not pierce or harm the tank’s bottom.

5. Are the tank pipes rusty, damaged, or sloping away from the tank?

According to EPA research, the majority of petroleum spills from USTs are the result of pipe failures. Metallurgical pipes should be protected from rusting by galvanization (coating iron or steel with zinc) or by cathodic protection (covering copper or aluminum with zinc) (attaching a metal piece, usually zinc or magnesium, to the pipe, which prevents corrosion by reversing the electric current that causes it). It is recommended that new pipes be constructed of fiberglass or similar nonmetallic material.

In order to avoid the backflow of petroleum from the pipes into the tank, which might lead to pollution, a check valve is installed between a tank and a pump.

When the pipe is used, it should be sloped back toward the tank to allow the gasoline to drain back into the tank and leave less petroleum in the pipe after usage.

6. Is your tank unmonitored for leaks or fuel use? Was it installed without backfill or anchors, or by an untrained person?

Install the gasoline storage tank with the assistance of a trained installation. In addition to following manufacturer-recommended installation standards, ensure that the installer follows these guidelines:

  • Check the underlying soil to see if it is capable of supporting a UST or AST installation. Installing clean backfill will help to minimize damage from adjacent soils such as extremely corrosive clays, damp or acidic (low pH) soil, or soils with a high shrinkage and expansion potential. Properly secure the tank while it is on a hillside. Install an AST on an impermeable liner made of concrete or one of the latest synthetic textiles to keep the water out of the tank. Create a spill-collection basin to catch any messes. A corrosion protection coating or the use of nonmetallic materials such as fiberglass must be used on all new USTs and associated pipe. Make certain that the pipes will not twist or break if the tank is bumped or otherwise disturbed
  • And A metal tank should not be scratched because this may accelerate corrosion and tank degradation.

7. If your tank is aboveground, does it lack an enclosure such as a fence with a lock?

Each AST should be contained behind a secure 6-foot-tall fence or a well-ventilated facility built of non-combustible materials to prevent access by others. Construct a barrier between the tank and the gasoline distribution section of the facility. Place the AST within a secondary containment structure comprised of a dike and a pad to protect it from the elements. Coated steel pipe is recommended for corrosion prevention. Steel or fiberglass can be used for below-ground plumbing; if steel is used, it must be coated and cathodically protected before use.

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8. Are any storage tanks on your property unused?

Unused USTs can pollute groundwater for many years if they are not properly decommissioned. The tank will continue to deteriorate, and even a tiny quantity of product left in the tank might contaminate an aquifer, causing it to fail. The metal in an unused UST will also cause new tanks adjacent to corrode more quickly as a result of its presence. Determine the locations of any USTs that are currently not in use on your premises. A water well should not be more than 100 feet away from any tank.

Scrap dealers or landfills will accept such tanks after they have been removed from the ground.

Groundwater contamination can occur as a result of improper tank closure. Notify the Texas Commission on Environmental Quality and the local fire department at least one month before removing a regulated tank so that they can take preparations to prevent explosions or other hazards.


Following these recommendations will assist you in preventing petroleum storage tanks from polluting your well water:

  • Ideally, the tank should be placed at least 100 feet downslope of any water well. Make certain that the tank is at least 50 feet away from any structures. Have the tank placed and properly anchored by a licensed and insured installation
  • If the tank is disturbed, be certain that the pipes will not twist or break. Place the tank in a convenient location to enable for simple maintenance and vehicle refilling access
  • Ensure that the pipe is not damaged by agricultural and fuel trucks. Tanks holding more than 1,100 gallons must be registered with the Texas Commission on Environmental Quality’s Petroleum Storage Tank Program (html). Protect against spills and overfilling by installing spill and overfill safeguards. Check for leaks in all tanks on a regular basis, and check the tank level once a month. Construct a dirt dike and cushion beneath ASTs to keep spills and leaks contained. Installers should be qualified to remove any unneeded USTs or fill them in place.

For more information

Evaluation of Your Petroleum Product Storage Facility Written by R. T. Burns. 1996. SP484 G, 6 pages, published by The University of Tennessee in Knoxville. Super Guide to Petroleum Storage Tanks in Texas: A Comprehensive Guide to Complying with State Regulations Texas Commission on Environmental Quality. 2012. RG-475, 92 pages.html. Texas Commission on Environmental Quality Texas Commission on Environmental Quality: P.O. Box 13087, Austin, TX 78711-3087, phone: 512.239.2160; Texas Commission on Environmental Quality website.

  • Petroleum Storage Tank Program:tceq.texas.gov/agency/pst cert.html
  • Leaking Underground Storage Tank Program:tceq.texas.gov/agency/pst cert.html
  • Office of Permitting, Remediation, and Registration
  • Permitting and Remediation Support, Petroleum Storage Tanks
  • Office of Per

www.tgpc.state.tx.us/index.php is the website for the Texas Ground Water Protection Committee. TEX-A-SYST is an acronym that stands for reducing the risk of ground water contamination through improved petroleum product storage. B. L. Harris, D. W. Hoffman, and F. J. Mazac Jr. published a paper in 1997 titled B-6027, a Texas A&M AgriLife Extension booklet of eight pages. This page contains information on the Texas Well Owners Network, which is also known as the Texas Well Owners Guide to Water Supply.

  • Uhlman, D.
  • L.
  • Clayton, and J.
  • Smith contributed to this article.
  • B-6257, a Texas A&M AgriLife Extension pamphlet with 96 pages.
  • Make contact with the appropriate county office.

Above Ground Storage Tank Regulations in Texas? — Great River Industries

Aboveground storage tanks are subject to strict regulations in order to preserve the environment and public health. Anyone who is having ASTs placed or who is in charge of a firm that owns these tanks should be informed of the restrictions and how they affect their company’s operations.

Which Tanks are Regulated

If an AST has a capacity greater than 1100 gallons and contains a petroleum product, the Texas Commission on Environmental Quality (TCEQ) regulates it. The Texas Commission on Environmental Quality (TCEQ) does not regulate all ASTs. If the AST fits all of the following conditions, it may not be subject to regulatory oversight:

  • Capacity of fewer than 1100 gallons of product is required. Any overflow or spill protection tank that is only briefly utilized in an emergency or for spill protection must be emptied within 48 hours and must be examined for release at least once every 30 days. Tanks with diluted petroleum concentrations that are not suitable for use as fuel
  • A transformer is a piece of electrical equipment that transmits electrical current.

Other tanks, such as agricultural or residential tanks with a capacity of less than 1110 gallons and tanks used for heating oil on the same premises, may be excluded as well. Additionally, tanks that are flow-through and those linked with the exploration and production of oil or gas that are currently controlled by the Railroad Commission of Texas are excluded from the regulation. Septic tanks, surface ponds or lagoons, and stormwater collection tanks are also exempt from the requirements, as are septic systems.

  • Individuals who wish to claim an exemption must provide proof to back up their claim.
  • Tenders for ASTs must be registered by completing form TCEQ-00659, with one form being completed for each location where ASTs are located.
  • If there are any modifications that have an influence on an AST, a new form must be submitted within 30 days of the change taking effect.
  • Installing an additional AST or replacing an existing AST with a new tank necessitates the submission of a construction notice form, which is TCEQ-00495, at least 30 days before you intend to begin work.

Within 24 and 72 hours after starting work, you must notify the Tennessee Department of Environmental Quality to report the time for installation.


You are required to preserve certain records throughout the duration of the system’s operation. The following are examples of records that should be kept on hand:

  • Confirmation of the start of construction
  • If the planned AST is located within the recharge or transition zones of the Edwards Aquifer, an application for permission will be submitted. Information about the tank’s manufacturing process
  • And Form for registering
  • Receipts for payments

Building permits and notices of construction; If the planned AST is located within the recharge or transition zones of the Edwards Aquifer, an application for permission is required. Insights on the tank’s manufacturing process. Form for registering. Receipts of payment;

Reporting Leaks

The Texas Commission on Environmental Quality (TCEQ) requires you to report any leaks and spills if the volume is greater than 25 gallons or if the spill leaves a sheen on water. It must be reported if the cleaning cannot be finished within 24 hours, even if the amount of water involved is less than 25 gallons. It is not necessary to have operator training or financial assurance for aboveground storage tanks, nor is it necessary to have AST systems.

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