A gas station to car wash conversion changes the fuel system before it changes anything about the wash. Tanks, piping and dispensers have to be closed or changed in service, and the ground around them assessed for releases, before wash equipment goes on the lot. Water handling, drainage and layout come after that.
This article follows that order. It covers the federal baseline for tank closure, the Florida rules for underground and aboveground tanks, how contamination history affects a purchase, and what the wash side adds. It does not state any county zoning, site-plan or queuing rule, because those vary by jurisdiction and have to come from the local authority. Your engineer and attorney make the rulings on your site.
Why the fuel side is the first change
A fuel site is a regulated site. The tanks hold a regulated substance, and the owner has duties to state and federal agencies that continue when fuel sales stop. A wash is a different use of the same ground. Florida’s rules treat a change in service from a regulated to a non-regulated substance as an event with its own third-party evaluation, which is why the wash equipment order sits behind the closure work in the schedule.
Three questions decide how much work stands between you and the first wash bay footing:
- What tanks are on the site, how large are they, and are they underground or aboveground?
- Do the closure records and sampling show a release?
- Which agency receives the notice for your county?
Tank work carries hazards: flammable vapors, open excavations and confined spaces. Florida’s rule has Certified Contractors remove or close tanks. Nobody on the project team should open or enter a tank unless they are trained and permitted to do so.
The federal baseline for underground tanks
The federal underground storage tank regulations in 40 CFR Part 280 require owners and operators to notify the implementing agency at least 30 days before permanent closure or a change in service. The exception is an action that responds to corrective action. The copy we reviewed is the 2012 edition, so check the current eCFR text before you quote the section to a lender or a county.
EPA’s page Frequent Questions About Underground Storage Tanks repeats the 30-day notice. It also says that site-assessment results from permanent closure must be kept for at least 3 years. Treat that as a minimum for your own file. A buyer or lender may ask for the records long after that.
EPA’s closure assessment guidance sets out the general principle. At permanent closure the site is sampled where contamination is most likely to be present. A tank can be removed, or cleaned and filled with an inert solid such as gravel, sand, foam or concrete. Water is not an inert solid. EPA recommends removal. If the assessment shows a release, the owner must notify the authorities and begin corrective action. That document is the Closure Assessment Guidelines for Underground Storage Tanks in Indian Country. It was written for tribal lands, so use it for the federal principle only. It is not a Florida rule.
Florida rules for underground tanks over 110 gallons
In Florida, Chapter 62-761 of the Florida Administrative Code covers underground storage tanks greater than 110-gallon capacity. The Department of Environmental Protection lists the chapter and its forms on its Storage Tank System Rules, Forms and Reference Guidelines page. Three forms matter for a conversion:
- Form 62-761.900(5), Installation and Removal Form for Certified Contractors (updated 7/9/2019).
- Form 62-761.900(7), Closure Integrity Evaluation Report (updated 10/13/2019).
- Form 62-761.900(8), Limited Closure Report (updated 10/13/2019).
The 62-761.900 forms page shows that DEP updated the chapter in 2017 and 2019 to match the 2015 federal requirements in 40 CFR Part 280. DEP has also published a workshop draft of Chapter 62-761 with no date shown. We could not confirm whether a newer version is now in force. Check the current rule text on flrules.org or with DEP before you rely on any form date or section number in this article.
What the closure rule says
Rule 62-761.800 governs out-of-service and closure requirements. In the text we reviewed, closure is done through a Closure Integrity Evaluation and the Closure Integrity Report on form 62-761.900(7). The definitions in 62-761.200 describe a Closure Integrity Evaluation as an assessment by a third-party inspection or testing entity at closure, replacement, or change in service from a regulated substance to a non-regulated substance. They also tie the Closure Report to DEP’s instructions for sampling during underground storage tank closure, July 2019 edition.
The same rule gives three routes for a tank that will not hold fuel again:
| Route | What the rule text we reviewed says | What to settle with your engineer |
|---|---|---|
| Remove the tank | A Certified Contractor removes and disposes of it. | EPA recommends removal. Excavation changes the lot and gives access for sampling. |
| Close in place | The tank is filled with a solid inert material. | EPA’s guidance lists gravel, sand, foam and concrete, and says water is not an inert solid. The tank stays under the future wash area. |
| Reuse for non-regulated liquids | Allowed under API Recommended Practice 1604, 4th Edition (February 2021). | Whether reuse suits a wash site is an engineering and regulatory question for the project team. |
The out-of-service clock
An owner who stops selling fuel but has not decided what to do with the tanks is on a clock. In the rule text we reviewed, a repair not completed within 90 days puts the system out of service. If it is still not repaired 365 days after going out of service, it must be permanently closed. For a site bought as a conversion, ask the seller for the status date of every tank. A site that has sat idle may already be close to the closure deadline.
Aboveground tanks and the county notice
Aboveground tanks fall under Chapter 62-762. Rule 62-762.411 on notification has an effective date of 6/26/2023. For a change in service or closure, the notice goes to the county, in writing or electronically, between 30 and 45 days before work starts. A second notice follows 48 to 72 hours before work. A Closure Integrity Report for aboveground tanks, Form 62-762.901(7), goes with the closure notification. A second copy of the rule is on the elaws mirror.
The notice goes to the county where a delegated program applies. Find out which program covers your parcel and ask that office for its current form and e-mail or portal address. Do not assume the process is identical across counties.
DEP held a rule workshop on Chapter 62-762 on February 19, 2026, with a draft chapter published, according to its Storage Tank Systems Rulemaking page. The 2023 rule is the last final version we could confirm. Check the rulemaking page again when you schedule the notices.
Contamination history and what it means for the purchase
A fuel lot may carry a discharge history. Section 376.30716, Florida Statutes, addresses discharges found at sites with petroleum storage systems. It refers to the area within 10 feet of an underground tank, integral piping and dispenser, and to the area between the tank and the dispenser. It presumes that a later-discovered discharge is part of the original discharge until the secondary-containment upgrade under Rule 62-761 is complete. State funding eligibility is complicated. Use the statute as a reason to commission a professional assessment before closing on the parcel, and ask your attorney what it means for liability and for any cleanup funding.
Florida’s Brownfields Redevelopment Program was established in 1997 to assess, clean up and reuse sites where redevelopment is complicated by actual or perceived contamination. A Brownfield Site Rehabilitation Agreement gives assurance that rehabilitation follows Florida statutes and DEP’s Contaminated Site Cleanup Criteria rule, and it carries limited liability protection. The program is described in DEP’s Brownfields Annual Report for fiscal year 2021-22 and in the report for fiscal year 2024-25.
Brownfield status applies only to sites in designated brownfield areas. DEP’s Broward County brownfield list includes a former fuel parcel, the El-Ad Gas Station Parcel Green Reuse Site, which shows the program can reach fuel sites. It does not mean every gas station qualifies. Ask the county or your environmental consultant whether your parcel sits inside a designated area.
What changes on the lot once the fuel side is closed
After closure, the lot still looks like a fuel site. Canopy columns, pump islands, the store building, underground piping runs and paved fueling areas occupy the ground a wash layout needs. Which of these stay depends on the closure route, on what the assessment found and on local approvals. Do not draw a wash plan around a tank field until you know which tanks come out and which are filled in place.
Drainage and washwater
Water is the main change on the wash side. EPA’s fact sheet Stormwater Best Management Practice: Vehicle Maintenance and Washing (EPA-832-F-21-032F, February 2023) says commercial car washes minimize stormwater impacts compared with residential washing, because they often recycle water or must treat wash water before it goes to the sanitary sewer. The same fact sheet describes vehicle maintenance areas as stormwater hot spots, with oil, solvents and gasoline. It supports one practical point for a former fuel lot: its old fueling and maintenance areas need a drainage review before you decide where wash water will flow.
Federal National Pollutant Discharge Elimination System rules are in 40 CFR Part 122. This article does not read a commercial car wash requirement into that part. Whether your wash needs a discharge permit, how it connects to sewer and whether pretreatment applies are questions for your civil engineer, the local utility and the permitting authority. We did not retrieve a Florida pretreatment or oil-water separator rule, so none is stated here.
Equipment footprint
Wash type drives the footprint. The figures below come from Europe Makine’s conveyor tunnel page and are length ranges that vary per site. They give a first sense of scale and say nothing about whether a machine fits your parcel.
| System | Length stated | Note |
|---|---|---|
| Conveyor tunnel modules | About 30 to 98 ft (9 to 30 m) | Longer to order |
| ACROBAT 2X touchless rollover, plant length | About 21 to 49 ft (6.5 to 15 m) | Range depends on the site |
| Ephesus three-brush rollover, rail length | About 33 ft (10 m) | Rail length only |
A site survey puts these lengths against the real lot: the parcel shape, the entry and exit, the drying and vacuum areas and the room left after the tank decision. Europe Makine lists its machine types on its car wash systems page.
Questions to put to the county, utility and state
We did not retrieve any county or city rule on zoning, site plans, driveways or vehicle queuing for converting a fuel site to a wash, including for Palm Beach County. Nor did we retrieve a Florida stormwater permit rule, a flood-zone requirement or a Florida Building Code requirement specific to conversions. These are the items to raise with the authorities in writing:
- Is a car wash a permitted use on the parcel, and does a change of use trigger a new site-plan review?
- How many vehicles must the lot hold in line, and where does the county measure that queue?
- Are the existing driveways and curb cuts approved for the new traffic pattern?
- What does the utility require before wash water reaches the sanitary sewer?
- Does the stormwater permitting authority treat the conversion as a change to the drainage design?
- Is the parcel in a mapped flood zone, and does that change building or equipment requirements?
- Which county program receives the aboveground tank notice, and which office handles the underground tank paperwork?
Put the answers in the project file with the name of the person who gave them and the date. Approvals on a converted fuel site often draw on records from several offices, and the file saves time when a reviewer asks where a number came from.
A typical order of work
Every site differs, but the sequence below keeps the fuel-side obligations ahead of the wash-side spending.
- Inventory the tanks, piping and dispensers, underground and aboveground, and collect the registration, monitoring and closure records.
- Identify the agency or county program that receives each notice, and check the current rule text for Chapter 62-761 and Chapter 62-762.
- Give the required advance notice before any closure or change-in-service work.
- Have a Certified Contractor carry out the removal or in-place closure, with the third-party Closure Integrity Evaluation and sampling the rule requires.
- Review the sampling results with your environmental consultant. If they show a release, notify the authorities and begin corrective action.
- Keep the site-assessment results on file, for at least 3 years under EPA’s FAQ and longer if a lender or buyer will ask.
- Fix the wash layout and drainage design once you know what stays underground, then order equipment.
Safety during the wash build
Once the wash goes in, the hazards change. Wash chemicals call for the PPE named on each product’s safety data sheet. High-pressure water, moving gantries, brushes and conveyors call for lockout and for trained staff during commissioning and service. Safety systems on the machines are not for staff to adjust or bypass. Anything that touches them goes through the manufacturer’s technicians.
Where Europe Makine fits in a conversion
Europe Makine manufactures car wash and heavy vehicle wash systems in the ACROBAT 2X, Ephesus, CIRRUS 5N, conveyor tunnel and SUNRISE truck and bus ranges. Its page on the turnkey build program states that the company secures the site, obtains permits, installs the machines and trains the crew. The same page references Ali’s Car Wash in Ocala, Florida, a built and operating example. Its home page states that installation and service run from the Greenacres, Florida base, and that the conveyor tunnel washes up to 130 vehicles per hour. Technicians and spare parts are held at the Greenacres base, and machines carry a 12-month warranty.
On a converted fuel site, equipment choice follows the site: the length left after the tank decision, the vehicles you expect and the water arrangements the utility will accept. Europe Makine quotes after it has seen the site and the vehicles, so the quote reflects the actual lot. It will not replace the engineer who signs the closure and drainage documents.
This article is general information and does not replace a site survey. Talk to Europe Makine once your tank status is known and you have the survey and records in hand, so the equipment discussion starts from the lot as it will exist after closure.
Questions and answers
- Do the fuel tanks have to be removed to convert a gas station to a car wash?
- Not always. In the text of Florida Rule 62-761.800 we reviewed, a tank can be removed by a Certified Contractor, closed in place by filling it with a solid inert material, or reused for non-regulated liquids under API Recommended Practice 1604, 4th Edition (February 2021). EPA recommends removal. Which route fits depends on the closure assessment, so confirm it with your engineer and the current rule text.
- How much notice is required before closing fuel tanks?
- The federal underground tank rule requires at least 30 days' notice to the implementing agency before permanent closure or a change in service, unless the action responds to corrective action. For aboveground tanks, Florida Rule 62-762.411 as last confirmed calls for county notice 30 to 45 days before work and a second notice 48 to 72 hours before work. Both chapters may be revised, so check the current text.
- Does every former gas station qualify for Florida's brownfield program?
- No. Brownfield status applies only to sites in designated brownfield areas. DEP's Broward County list includes one former gas station parcel as an example, which does not mean other fuel sites qualify. Ask the county or your environmental consultant whether your parcel sits inside a designated area.
- Does a car wash change the drainage on a former fuel lot?
- It adds wash water to manage. EPA's fact sheet says commercial car washes often recycle water or must treat wash water before release into the sanitary sewer, and it describes vehicle maintenance areas as stormwater hot spots. Your civil engineer, the utility and the permitting authority decide what applies to your parcel.