To dispose of hazardous waste legally, a business has to identify the waste, register for an EPA ID number, store it in labeled containers within the time limits for its generator category, hire a registered hazardous waste transporter, ship it under a Uniform Hazardous Waste Manifest to a disposal facility that holds a treatment, storage and disposal permit, and keep the signed records for at least three years.
- No trash, drain or dumpster - federal law (RCRA) and California law (DTSC, Title 22) make the generator responsible from the moment the waste is created until it is destroyed or recycled.
- Monthly volume sets your category - and the category sets how long you can store waste on site and what paperwork you need.
- Every shipment needs four things - an EPA ID number, a registered transporter, a permitted destination facility and a manifest signed by all three parties.
- The hauler does the paperwork - characterization, containers, labels, the manifest and the facility paperwork. Your job is to describe the waste honestly and keep the records.
What counts as hazardous waste for a business?
Hazardous waste is any discarded material that is either listed by the EPA or shows one of four characteristics: ignitability, corrosivity, reactivity or toxicity. The federal definition comes from RCRA, the Resource Conservation and Recovery Act, and the details are in 40 CFR Part 261. Listed wastes carry F, K, P or U codes. Characteristic wastes carry D codes.
In practice, the materials that trip up most businesses are ordinary: spent solvents and parts washer fluid, paints and coatings, acids and caustics, contaminated absorbent from a spill, used oil filters, lab chemicals, aerosol cans, fluorescent lamps and batteries. A machine shop, a school science lab, a property manager clearing out a tenant's storage unit and a city public works yard all generate it.
California goes further than the federal rules. The Department of Toxic Substances Control (DTSC) regulates some materials as hazardous even when the EPA does not, which is why you will hear the term non-RCRA or California-only hazardous waste. If a material is hazardous under either set of rules, it has to be handled as hazardous waste in this state. DTSC's generator overview is the starting point.
Responsibility for hazardous waste is cradle to grave. Handing it to a hauler does not end your liability. If the waste is dumped, mislabeled or sent to the wrong facility, the generator can still be held responsible, which is why the manifest and the choice of hauler matter so much.
Step 1: Identify and characterize what you have
Before anything can be scheduled, somebody has to answer one question for every container: what is in it? Federal rules require the generator to make a hazardous waste determination for each waste stream, using either knowledge of the process that produced it or laboratory testing (40 CFR 262.11).
For most businesses this is simpler than it sounds. The safety data sheet for the product, the process that created the waste and a look at the container usually tell a licensed hauler what the material is and which waste codes apply. The result is a waste profile, a one-time description of the stream that stays on file and is reused for every pickup of the same material.
When nobody knows what a drum holds, it gets sampled and tested before it moves. On HCI jobs, unknowns are the most common reason a cleanout takes an extra visit, so the fastest thing you can do is gather every label, SDS and purchase record you have before the first call.
- Know the source - what process or product created the waste, and when.
- Know the form - liquid, solid, sludge, gas cylinder, contaminated debris.
- Know the container - drum, tote, pail, carboy, loose material, and whether it is sealed.
- Know the quantity - even a rough gallon or pound estimate changes the quote and the paperwork.
Step 2: Know your generator category
The amount of hazardous waste you produce in a calendar month puts you in one of three federal categories, and the category decides how long you can store waste on site, what training and planning you need and how much reporting you owe. The EPA's generator categories page has the full table; the short version is below.
Federal hazardous waste generator categories (40 CFR 262.13). California applies its own, stricter limits in some cases, so confirm with DTSC.
| Category | Monthly volume | On-site storage limit | What it means for you |
|---|---|---|---|
| Very small quantity generator (VSQG) | 100 kg (about 220 lb) or less, and 1 kg or less of acute waste | No federal time limit while under 1,000 kg total | Lightest rules federally, but California still requires an ID number and proper disposal |
| Small quantity generator (SQG) | More than 100 kg and less than 1,000 kg | 180 days (270 if the facility is more than 200 miles away) | EPA ID required, basic emergency preparedness and training |
| Large quantity generator (LQG) | 1,000 kg (about 2,200 lb) or more, or more than 1 kg of acute waste | 90 days | Full contingency plan, formal training, biennial report |
Why the category matters before the first pickup
Most of the businesses we serve are small or very small quantity generators who hit a one-time event: a lab cleanout, a tenant leaving chemicals behind, a shop closing, a spill that produced several drums of contaminated absorbent. A single event can push a VSQG over the SQG line for that month. That is not a problem as long as the waste is counted, stored and shipped correctly, but it is why the hauler asks about volume before quoting.
Step 3: Get an EPA ID number
An EPA identification number is the twelve-character ID that ties your site to every manifest, transporter and facility that handles your waste. Small and large quantity generators must have one before shipping waste off site (40 CFR 262.18). You apply with EPA Form 8700-12, the Site Identification Form, which the EPA explains on its notification page.
In California the number comes through DTSC. Generators of federally regulated waste get a federal EPA ID number that starts with CA; generators of California-only waste can get a state ID number instead. DTSC's ID number page walks through both, and the state also charges a generator fee tied to the ID. If you do not have a number, a licensed hauler will usually help you apply as part of setting up the first pickup. HCI does this as a standard part of the hazardous waste disposal paperwork.
The ID number belongs to the physical location, not the company. A business with two yards needs two numbers, and a number does not move with you when you relocate.
Step 4: Store it safely while it accumulates
Between the day a waste is generated and the day it ships, it has to sit somewhere, and the rules for that somewhere are specific. The 2016 Hazardous Waste Generator Improvements Rule tightened container and labeling requirements across every category.
- Closed, compatible containers - lids on except when adding or removing waste. The container material has to be compatible with the contents, so no acids in a steel drum that will corrode.
- Satellite accumulation areas - you may keep up to 55 gallons of hazardous waste (or one quart of acutely hazardous liquid) at or near the point where it is generated, under the control of the operator, before the accumulation clock starts.
- The clock - once a container moves to the central storage area, or fills past the satellite limit, the accumulation start date goes on the label and your category's time limit applies.
- Weekly inspections - central accumulation areas are inspected at least weekly for leaks and container condition, and the inspection is logged.
- Secondary containment and separation - keep incompatible wastes apart, keep ignitables away from ignition sources and keep the area clear enough that a crew can reach every container.
Step 5: Label every container correctly
Labeling is the most common citation inspectors write, and it is the easiest one to avoid. Under the current federal rule every container in a central accumulation area needs three things on it: the words Hazardous Waste, a note on what makes the contents dangerous (the characteristic, the DOT hazard class or a pictogram), and the accumulation start date. California's Title 22 adds the generator's name and address, the composition and physical state of the waste, and the ID number, so a California label carries more than the federal minimum.
A licensed hauler brings pre-printed labels that satisfy both sets of rules and fills them in on site. If you are labeling yourself before the pickup, write what you know and do not guess at waste codes; the hauler assigns the codes when the profile is finalized.
Step 6: Hire a registered transporter and a permitted facility
Hazardous waste can only be moved by a transporter with its own EPA ID number and, in California, a current DTSC hazardous waste transporter registration. It can only be delivered to a facility permitted to receive that specific waste: a treatment, storage and disposal facility (TSDF) or an authorized recycler. You cannot drive it to a landfill or a household drop-off event in a company truck.
This is the step where choosing the right vendor protects you. Some companies that advertise disposal are brokers who subcontract the pickup and the transport; the manifest will show you who actually carried the load. Ask any company you are considering for three things and check them: their EPA ID number, their state transporter registration and their USDOT number. HCI's are on every page of this site, and our hazardous waste transportation page explains what happens on the road.
Transport also brings the Department of Transportation into the picture. Shipments must be packaged, marked and placarded under DOT hazardous materials regulations (49 CFR), the driver needs hazmat training, and the truck needs the right placards for the hazard classes on board.
HCI Environmental
Have drums, totes or containers that need to go?HCI Environmental picks up, transports and disposes of hazardous waste under its own EPA identification, USDOT registration and California hazardous materials transportation license. Tell us what you have and you will get a written quote, usually within 24 hours.
Step 7: Ship it under a manifest and keep the records
The Uniform Hazardous Waste Manifest (EPA Form 8700-22) is the shipping document that travels with every off-site load of hazardous waste and is signed by the generator, each transporter and the receiving facility. It lists the waste codes, the quantity, the containers and the destination, and it is the proof that your waste went where it was supposed to go.
Since 2018 the manifest process has run through the EPA's e-Manifest system. The receiving facility submits the final signed copy electronically, and the generator can see it in the system once the load is accepted. Generators have to keep a signed copy of every manifest for at least three years from the shipment date (40 CFR 262.40), and most keep them longer.
The manifest is also where the Land Disposal Restrictions notification rides along. Certain wastes have to be treated before they can be land disposed, and the generator certifies which treatment standard applies. The EPA's LDR overview covers the details; in practice the hauler prepares this notice with the manifest.
What a closed job looks like
On an HCI pickup the crew arrives with the containers, labels and placards the profile calls for, packages what needs packaging, manifests the load at your dock and hauls it under our own identification numbers. When the facility accepts the load, you receive the signed manifest copies and a certificate of disposal or recycling for your file. That packet is what an inspector will ask to see, and it is what proves you met your obligation.
How much does hazardous waste disposal cost?
Cost depends on four things: the waste stream (a drum of spent solvent costs less to dispose of than a drum of reactive lab chemicals), the quantity and container type, how much packaging and characterization the job needs, and which facility can accept the material. Transport distance and whether the pickup is routine or urgent also move the number.
Because of that spread, any company that quotes a flat per-drum price without asking what is in the drum is guessing. A legitimate quote comes after the waste is described. At HCI the quote is written, usually back within 24 hours, and there is no charge for it. Lab packs, small drum counts and routine pickups sit at the low end; large cleanouts, unknowns and reactive or acutely hazardous materials sit at the high end.
Mistakes that turn a routine pickup into a problem
- Mixing waste streams - pouring different wastes into one drum to save space can create a reaction and always makes the drum more expensive to dispose of, because the whole volume takes on the strictest code.
- Letting containers sit past the limit - the accumulation date on the label is a deadline. Missing it is a violation even if the waste is otherwise handled perfectly.
- Evaporating, diluting or draining - leaving a lid off so solvent evaporates, diluting a corrosive to bring it under the pH limit or rinsing residue down a floor drain are all treated as illegal disposal.
- Using an unregistered hauler - if the company picking up your waste cannot show you an EPA ID and a state transporter registration, the manifest cannot be completed correctly and your liability does not end at the curb.
- Throwing out universal waste with the trash - lamps, batteries, aerosols and some electronics have their own streamlined rules, but they still cannot go in the dumpster. See our universal waste page for what qualifies.
Federal RCRA rules set the generator's record retention at three years, the satellite accumulation limit at 55 gallons, and the on-site storage clock at 90 days for large quantity generators and 180 days for small quantity generators. Those four numbers cover most of what an inspector checks first.
What to do if the waste is already a spill
Everything above assumes the waste is in a container. If it is on the floor, in the soil or in a storm drain, the order changes: contain it, keep people away from it, and call a response contractor before you call anyone about disposal. Spill cleanup produces its own hazardous waste (contaminated absorbent, soil, PPE and wash water) and that waste goes through the same seven steps once the emergency is over. Our emergency spill response crews run 24 hours a day across the region, and the dispatcher will tell you what to do in the first ten minutes.
Frequently asked questions
Can a small business take hazardous waste to a household hazardous waste collection site?
How long can a business keep hazardous waste on site before it has to be shipped?
Do I need an EPA ID number for a one-time cleanout?
What is the difference between a hazardous waste hauler and a broker?
What happens if hazardous waste is thrown in the regular trash?
Is used oil considered hazardous waste?
Sources and further reading
- EPA: Hazardous Waste Generators Overview of generator obligations
- EPA: Categories of Hazardous Waste Generators
- EPA: Defining Hazardous Waste (listed, characteristic and mixed wastes)
- 40 CFR Part 262: Standards Applicable to Generators of Hazardous Waste
- EPA: Hazardous Waste Electronic Manifest System (e-Manifest)
- EPA: Hazardous Waste Generator Improvements Rule (2016)
- EPA: Land Disposal Restrictions
- DTSC: Hazardous Waste Generator requirements (California)
- DTSC: EPA and California ID Numbers
Written and reviewed by
the HCI Environmental teamLicensed hazardous waste hauler and general engineering contractor, Corona, CaliforniaHCI Environmental & Engineering Service has handled hazardous waste, emergency spill response and industrial cleaning across California since 2000. Our articles are written and reviewed by the people who dispatch the trucks, sign the manifests and run the jobs, and every rule we cite links to the regulator that wrote it.
