The Used Oil Management Standards are the EPA rules that govern how used oil is stored, handled, transported and recycled. Found in 40 CFR Part 279, they presume that used oil will be recycled and set practical requirements for generators, such as keeping oil in containers that are in good condition, labeling them "Used Oil" and cleaning up spills, along with requirements for transporters, processors and burners.
Fleet maintenance shops, manufacturing plants, construction yards and utilities all generate used motor oil, hydraulic fluid and other used oils. Managed under Part 279, this oil can be recycled without the full hazardous waste requirements. Mismanaged, it can contaminate soil and water and bring enforcement.
What Are the Used Oil Management Standards?
EPA issued the used oil management standards in 1992 under RCRA. The rules are at 40 CFR Part 279, and EPA's used oil management page explains the program.
Under 279.1, used oil means any oil that has been refined from crude oil, or any synthetic oil, that has been used and as a result of that use is contaminated by physical or chemical impurities. Engine oil, transmission fluid, hydraulic fluid, gear oil, compressor oil and metalworking oils all commonly qualify.
Recycling presumption
Under 279.10, the Part 279 rules apply to used oil whether or not it shows hazardous characteristics, and EPA presumes used oil will be recycled unless it is disposed of or sent for disposal. Used oil sent for disposal must be evaluated under the hazardous waste rules.
Mixtures and the halogen presumption
- Used oil mixed with a listed hazardous waste is regulated as hazardous waste.
- Used oil containing more than 1,000 ppm total halogens is presumed to be mixed with hazardous waste. The presumption can be rebutted by showing the oil does not contain significant concentrations of halogenated hazardous constituents.
- Used oil mixed with characteristic hazardous waste is regulated as hazardous waste if the mixture still shows the characteristic. Mixtures with waste that is hazardous only for ignitability are used oil if the mixture is not ignitable.
- Mixtures of used oil and very small quantity generator hazardous waste are regulated as used oil.
- Used oil containing 50 ppm or more of PCBs is regulated under the TSCA rules at 40 CFR Part 761.
The practical lesson for generators is simple: never pour solvents, parts washer fluid or other wastes into the used oil drum.
Who Must Comply?
Part 279 sets standards for generators, collection centers and aggregation points, transporters and transfer facilities, processors and re-refiners, burners and fuel marketers. Under 279.20, a used oil generator is any person, by site, whose act or process produces used oil. Most businesses that service their own vehicles or equipment are generators.
Household do-it-yourself oil changers are not regulated, and farmers that generate an average of 25 gallons per month or less of used oil from farm vehicles or machinery during a calendar year are exempt. A generator that also transports, processes, burns or markets used oil must meet the standards for that activity as well.
Key Requirements for Generators
Storage
Under 279.22, generators may store used oil only in tanks, containers or units subject to the hazardous waste storage rules. Containers and aboveground tanks must be:
- In good condition, with no severe rusting, apparent structural defects or deterioration
- Not leaking, with no visible leaks
Labeling
Containers and aboveground tanks used to store used oil, and fill pipes used to transfer used oil into underground storage tanks, must be clearly labeled or marked with the words "Used Oil."
Response to releases
When a release of used oil occurs, the generator must:
- Stop the release
- Contain the released used oil
- Clean up and properly manage the released used oil and other materials
- If necessary, repair or replace any leaking containers or tanks before returning them to service
Related tank and spill rules
Section 279.22 notes that generators must also follow the SPCC rule in 40 CFR Part 112, and that used oil in underground tanks is subject to the underground storage tank rules in Part 280. Used oil counts toward SPCC aboveground storage capacity; see the SPCC rule page for the thresholds.
Space heaters
Under 279.23, a generator may burn used oil in an on-site space heater only if the heater burns oil generated on site or received from household do-it-yourselfers, is designed for a maximum capacity of 0.5 million Btu per hour or less, and vents combustion gases to the outside air.
Off-site shipments
Under 279.24, generators must use transporters that have an EPA identification number. There are three exceptions:
- Self-transport to a collection center: the generator may haul its own used oil, in a vehicle owned by the generator or an employee, no more than 55 gallons at a time, to a used oil collection center registered or recognized by a state, county or municipal government.
- Self-transport to an aggregation point: the same 55-gallon and vehicle limits apply when taking oil to an aggregation point owned or operated by the same generator.
- Tolling arrangements: a processor or re-refiner may collect the oil without an EPA ID number under a contract to return the reclaimed oil to the generator for use as a lubricant, cutting oil or coolant.
Prohibited practices
Under 279.12, used oil may not be managed in surface impoundments or waste piles unless they are regulated hazardous waste units, may not be used as a dust suppressant except in states EPA has authorized to allow it, and off-specification used oil fuel may be burned only in specified industrial furnaces, boilers, compliant space heaters or hazardous waste incinerators.
Used Oil Filters and Oily Materials
Under 40 CFR 261.4(b)(13), non-terne-plated used oil filters are excluded from hazardous waste if they are not mixed with listed hazardous waste and are gravity hot-drained by puncturing the anti-drain back valve or dome end and hot-draining, hot-draining and crushing, dismantling and hot-draining, or another equivalent hot-draining method. Under 279.10(c), materials from which used oil has been drained or removed to the extent possible, with no visible free-flowing oil, are not used oil, but oil drained from them is.
Transporters and Recordkeeping
Part 279 does not require generators to keep shipment records, but used oil transporters must. Under 279.46, transporters record each shipment they accept and deliver, including the name, address and EPA ID number of the other party, the quantity, the date and a signature, and keep those records for at least three years. Many generators keep their copy of the transporter's receipt to show where the oil went.
Penalties and Enforcement
EPA and authorized states enforce the used oil standards under RCRA, and many states have stricter used oil rules or regulate used oil as hazardous waste. RCRA civil penalties are adjusted each year for inflation in 40 CFR 19.4. Common findings include unlabeled drums, leaking containers, open fill pipes, oil-stained floors without cleanup and used oil mixed with solvents.
How to Comply: Step by Step
- Identify used oil streams. List every location where oil is drained, changed or collected.
- Keep oil separate. Prohibit mixing solvents, antifreeze, parts washer fluid or other wastes with used oil.
- Use good containers. Store oil in closed drums or tanks that are not rusted, damaged or leaking, with secondary containment where practical.
- Label everything. Mark every container, tank and underground tank fill pipe "Used Oil."
- Prepare for spills. Keep spill kits near storage areas and train staff to stop, contain and clean up releases.
- Choose a qualified transporter. Confirm the hauler has an EPA ID number and keep copies of receipts.
- Drain filters properly. Hot-drain used oil filters using an accepted method before recycling or disposal.
- Inspect regularly. Check container condition, labels and spill supplies on a set schedule.
How SMS360 Helps
SMS360's Audits & Inspections module lets teams build digital checklists for used oil storage areas covering container condition, "Used Oil" labels, leaks and spill kit supplies, and complete them on a mobile device with photos. Findings can be turned into corrective actions, assigned and tracked to closure, and inspection history across shops and sites is available for audits. The same tools support related programs such as universal waste and hazardous waste generator inspections.
Frequently Asked Questions
How must used oil containers be labeled?
Containers and aboveground tanks must be clearly labeled or marked "Used Oil." Fill pipes that transfer used oil into underground storage tanks must carry the same marking.
Is used oil a hazardous waste?
Used oil that is recycled is managed under Part 279 rather than the hazardous waste rules, whether or not it shows hazardous characteristics. It becomes hazardous waste if it is mixed with listed hazardous waste, mixed with characteristic waste and still shows the characteristic, or sent for disposal and found to be hazardous.
Can I haul my own used oil to a recycler?
Yes, within limits. You may carry no more than 55 gallons at a time in your own or an employee's vehicle to a government-recognized used oil collection center or to an aggregation point you own or operate. Otherwise, use a transporter with an EPA ID number.
Do I need records of used oil pickups?
Federal rules do not require generators to keep records, but transporters must keep shipment records for three years. Keeping your copy of each pickup receipt is a good practice and may be required by your state.
