Food-service waste: from the kitchen to the dumpster
Restaurants produce cardboard, food scraps, used oil, liquids and food-contact packaging. Correct sorting begins inside—not when an employee reaches a shared dumpster.
Set up four practical back-of-house stations
Receiving / Stockroom
Keep clean, dry shipping boxes away from grease, liquid and discarded food. Flatten accepted boxes safely before taking them to the approved recycling or cardboard stream. Remove nonaccepted wrap, foam and straps.
Prep line
Use well-labeled food-scrap containers where food is prepared. Do not put plastic film, gloves, wrappers, rubber bands or glass into the food-scrap container. Check which food types are accepted locally.
Tray return / Dining
Place customer waste stations where customers can actually find them. Distinguish containers, liquids, recoverable food and packaging using local accepted-material instructions. Train staff to check contamination.
Dishwashing / Used oil
Maintain a designated process for cooking oil, grease, cleaning chemicals and liquid waste. Use approved service or disposal channels. Never pour waste into a storm drain or wash food residue out the back door.
Food service sorting reference
| Material | Practical starting action | Verify with hauler / city |
|---|---|---|
| Clean dry cardboard | Flatten safely, keep dry, place in approved recycling or dedicated cardboard service. | Service capacity, container destination, coated or waxed box acceptance. |
| Fruit, vegetables and other food scraps | Use the business’s approved food-waste/organics collection when provided and required. | Meat, dairy, bones, liners, packaging and whether an approved processing method is used. |
| Greasy boxes, napkins, paper plates, cups | Don’t assume they belong in recycling or organics. | Food-soiled paper and plastic coatings may be accepted by some processors but refused by others. |
| Plastic film, foam, gloves, mixed packaging | Keep out of clean-cardboard and food-scrap streams unless the program explicitly accepts them. | Accepted plastic resin types, specialty recycling and local disposal. |
| Used cooking oil and grease | Use designated collection or grease management; prevent spills. | Approved oil collector, container integrity and emergency spill contacts. |
| Excess edible food | Reduce waste and follow food-safe donation/recovery procedures when the facility is covered. | Specific SB 1383 tier/size thresholds, written recovery arrangements and food-safety standards. |
| Cleaning products / chemicals | Keep out of ordinary food and recycling streams; follow safety data sheets. | Hazard classification and special disposal instructions. |
A six-step restaurant closing shift check
What if a blue lid is open and cardboard is piled high?
First read the actual container label. If the service accepts cardboard, the correct action may be to flatten accepted dry boxes, adjust pickup frequency or add dedicated capacity. If the cardboard includes food-soaked or coated packaging, check whether that material is accepted. Don’t infer a violation or assume a stormwater release solely from the appearance of an open, roofed container.
Manager’s weekly five-minute review
- Are new hires taught sorting procedures in their first shift?
- Are the indoor bins labeled consistently with exterior hauler containers?
- Are employees improvising disposal because of overflowing bins or too few pickups?
- Are documented contamination examples used for constructive training, not employee shaming?
- Does the kitchen know the current grease/recovery vendor and safe spill-response procedure?
- Are broken covers, stains, leaks or storm-drain concerns passed to property management promptly?