Quick answer: After your grease trap is pumped, the FOG waste (fats, oils, grease, and solids) is loaded into a vacuum truck and transported to a licensed grease disposal facility. There it’s processed, separated, and either recycled into biodiesel or animal feed, or disposed of in compliance with EPA and state regulations. Illegal dumping — into rivers, storm drains, or on private land — is a federal crime.
Learn more → See how Ozark Grease Pros handles grease disposal
Most restaurant owners don’t think much about what happens to their grease after the pump truck drives away — and that’s understandable. You’ve got a kitchen to run. But knowing the process matters, especially when it comes to choosing a provider, understanding your compliance obligations, and making sure your waste isn’t being handled illegally.
Here’s the full process, start to finish.
Step 1 — Pump-Out: Removing the Waste from Your Trap
It starts at your restaurant. A licensed technician removes the grease trap lid and uses a vacuum hose connected to a pump truck to extract the contents: FOG (fats, oils, and grease) floating on top, water in the middle, and settled solids on the bottom.
All of it goes into the truck’s sealed tank. Nothing is left behind or poured into a floor drain — that would be an EPA violation. The technician cleans the trap interior and inspects the baffles before replacing the lid.
After the visit, you receive a service record — which you should keep on file for FOG compliance inspections.
Step 2 — Transport: Licensed Waste Hauling
The pump truck transports the waste to a licensed grease receiving facility. In Arkansas, haulers are required to be licensed by the Arkansas Department of Environmental Quality (ADEQ) — they can’t legally take your grease to just any location.
This is why choosing a licensed provider matters. Unlicensed haulers sometimes dump grease waste illegally in rivers, wetlands, or on private property. If the waste is traced back to your restaurant, you could face liability even though you hired someone else to handle it.
Step 3 — Processing: What Happens at the Facility
At the receiving facility, the waste goes through a separation process:
- Water separation: The liquid fraction (mostly water) is separated from the FOG and solids.
- Solids removal: Organic solids are screened out for separate disposal.
- Grease processing: The FOG layer is refined, filtered, and prepared for its end use — recycling or compliant disposal.
Ozark Grease Pros operates its own licensed grease disposal and processing facility — which means we control the entire chain from pump-out to final processing. No third-party handoffs, no guessing where your waste ends up.
Step 4 — Recycling or Disposal: Where It Goes Next
Processed grease waste has real value. Depending on quality and composition, it can be:
- Converted to biodiesel: Yellow grease (clean cooking oil) is a common biodiesel feedstock used to fuel trucks and machinery.
- Used in animal feed: Processed animal fats from grease traps can be used in rendered feed products.
- Sent to waste treatment: Residuals that can’t be recycled are sent to a licensed treatment facility — never dumped.
Ozark Grease Pros also offers used cooking oil collection and recycling as a separate service — keeping fryer oil in the recycling stream and out of your grease trap entirely.
Why This Process Matters for Your Restaurant
When you hire a grease trap service provider, you’re not just buying a pump-out — you’re taking on a chain of compliance responsibility. Under the EPA’s pretreatment program, restaurants are considered ‘indirect dischargers’ and are responsible for ensuring that grease waste is handled properly all the way through the disposal process.
That means if your hauler dumps illegally, you may still face liability. Always ask your provider:
- Are you licensed to haul grease waste in Arkansas?
- Where does the waste go after it leaves my restaurant?
- Can you provide documentation of compliant disposal?
What About Used Cooking Oil — Is That Different?
Yes. Used cooking oil (UCO) — the oil drained from your fryers — is handled separately from grease trap waste. UCO is cleaner, higher quality, and more valuable as a recycling feedstock.
Ozark Grease Pros offers used cooking oil collection as a standalone service. We place a collection container at your restaurant and pick it up on a schedule — keeping fryer oil out of your grease trap and in a proper recycling stream.
Let Ozark Grease Pros Handle the Entire Chain
| 📞 TAKE THE NEXT STEP |
| Licensed pump-out, transport, and disposal — all under one provider
We handle your grease trap service and used cooking oil collection, and process all waste at our own licensed facility. You get full documentation and zero guesswork on compliance. |
Conclusion / TL;DR — Key Takeaways
- After pump-out, grease waste is loaded into a sealed vacuum truck and transported to a licensed facility.
- At the facility, water, solids, and FOG are separated and processed for recycling or compliant disposal.
- Processed grease is typically recycled into biodiesel, animal feed, or sent to licensed waste treatment.
- Illegal dumping is a federal offense — and restaurants can face liability even if a third party was responsible.
- Always choose a licensed hauler who provides documentation of compliant disposal.
- Ozark Grease Pros controls the full chain — from pump-out to our own processing facility.
Frequently Asked Questions
What happens to grease after it’s pumped from a restaurant?
The grease waste is loaded into a sealed vacuum truck and transported to a licensed grease disposal facility. There, water, solids, and FOG are separated and processed. The grease is then either recycled into biodiesel or animal feed, or disposed of at a licensed treatment facility — depending on quality and composition.
Is it legal to dump grease trap waste into a river or on private land?
No. Illegal dumping of grease trap waste is a violation of the federal Clean Water Act and Arkansas state environmental regulations. It can result in criminal charges, large fines, and remediation costs. Restaurants that hire unlicensed haulers who dump illegally may also face liability.
Can restaurant grease be recycled?
Yes. Used cooking oil (yellow grease) is commonly recycled into biodiesel fuel or used in animal feed rendering. Grease trap waste (brown grease) has lower quality but can still be processed at licensed facilities. Ozark Grease Pros handles both types with full documentation.
What’s the difference between grease trap waste and used cooking oil?
Grease trap waste is the mixture of FOG, water, and solids collected from inside the grease trap. Used cooking oil (UCO) is the clean oil drained directly from fryers before it enters the trap. UCO is higher quality and more valuable as a recycling feedstock. Both require compliant handling, but through separate collection processes.
How do I know if my grease hauler is disposing of waste legally?
Ask your provider for proof of their Arkansas ADEQ waste hauling license, and request documentation showing where your waste is delivered. A reputable provider will provide a manifest or disposal receipt for every service visit. Ozark Grease Pros provides full documentation after every pump-out.
