Contaminated soil disposal cost lands between $50 and $200 per ton at licensed facilities. Legally, contaminated soil means soil testing above your state's petroleum action level, and that classification changes everything about where a load can go. The tank pit spoil that fails a lab test costs three to five times more to get rid of than the clean fill sitting beside it, and the gap widens every time a load gets misclassified.
That spread is wide for a reason. A lightly impacted load heading to a nearby Subtitle D landfill might clear the gate for $25 a ton, while heavily impacted soil routed to thermal treatment can pass $150 before trucking. According to EPA's mid year fiscal 2026 performance report, 530,454 UST cleanups have been completed nationwide since 1984, and nearly every one generated soil that somebody had to weigh, document, and pay to dispose of. The same report counts 52,859 releases still awaiting cleanup, so this market is not running out of work.
This guide covers what triggers the contaminated label, how facilities set their rates, and what each treatment path costs in 2026. It also walks through the tonnage math, because most surprise disposal bills are volume estimation errors rather than price gouging. The numbers come from published facility rate sheets, federal remediation cost surveys, and peer-reviewed treatment studies, with the key sources listed at the end.
The scale ticket, not the excavator bucket, decides what you pay.
What Makes Soil Legally Contaminated?
No federal number makes soil contaminated. The trigger lives in state action levels, and the same load can be regulated waste in one state and reusable fill across the river. Most states set either a fixed total petroleum hydrocarbon (TPH) number or a risk-based standard calculated from site conditions, and knowing which type your state runs decides whether one lab number settles the argument. The Interstate Technology and Regulatory Council notes that many legacy triggers near 100 ppm were set decades ago on thin science, which is why newer programs lean risk-based.
Minnesota treats soil under 100 mg/kg of gasoline or diesel range organics as unregulated fill, which is what lets it go back into the excavation or off site. Virginia allows 50 to 500 mg/kg TPH into lined landfills when total BTEX stays under 10 mg/kg, and bars anything above 500 mg/kg without express permit language. Washington sets 30 mg/kg for gasoline range TPH and allows 100 mg/kg only where benzene is absent and the ethylbenzene, toluene, and xylene total stays under 1 percent, with no interpolating between the two. Those three examples bracket the national pattern: a fixed statewide number, a tiered range with conditions, and a calculated site-specific standard.
Nearly all petroleum soil from tank work stays non-hazardous under RCRA. The exception is a load that fails a TCLP test, most often on benzene or on lead from old leaded gasoline, which reclassifies it as characteristic hazardous waste. That single lab result moves disposal from roughly $50 a ton to the $140 to $450 range at a Subtitle C facility. Used oil sites add a second wrinkle, since several states require testing for RCRA metals and PCBs before any used-oil-impacted load moves.
Get the lab package before anyone quotes disposal. An analytical suite of TPH, BTEX, and RCRA metals is what separates a priced load from a guessed one, and it belongs in the closure scope from the start rather than bolted on later. Washington listings sit under site assessment in Washington. Budget a few hundred dollars per sampling round and turn it around early, because a facility cannot quote what a lab has not measured.
| State | Standard type | The number | What it permits |
|---|---|---|---|
| Minnesota | Fixed statewide | Under 100 mg/kg gasoline or diesel range organics | Counts as unregulated fill, so it can go back into the excavation or off site |
| Virginia | Tiered with conditions | 50 to 500 mg/kg TPH with total BTEX under 10 mg/kg | Lined landfill. Above 500 mg/kg needs express permit language |
| Washington | Risk based | 30 mg/kg for gasoline range TPH, or 100 mg/kg only where benzene is absent | Site cleanup level. No interpolating between the two figures |
How Licensed Facilities Price Contaminated Soil
Every facility prices from the same three inputs: what is in the soil, how much of it there is, and the paperwork that proves both. Acceptance starts with a waste profile, a lab-backed form describing the load before the first truck rolls. Expect it to ask for site history, release source, lab data, and estimated tonnage, and expect the facility to hold trucks until it is approved. A complete submittal package usually clears review in days, while a thin one sits in a queue.
Virginia formalizes this as a Soil Profile Sheet under 9VAC20-81-660, with sampling records attached. One public landfill in New Jersey publishes a $22 per ton contaminated soil rate and waives full TCLP testing for homeowner loads under 5,000 ppm TPH. Facilities pre-approve each generator, then bill against certified scale weights on the way in. Public rate sheets like that one are useful ammunition in negotiations even when you never haul a single load there.
Petroleum soil that stays non-hazardous does not ride on the federal Uniform Hazardous Waste Manifest. It moves on state non-hazardous manifests, bills of lading, or disposal receipts, and Minnesota's petroleum program expects generators to keep those records with the cleanup file. The paper trail matters later, because a missing receipt is the fastest way to reopen a closed site. Virginia pairs its profile with a clearance number system, and facilities elsewhere run the same gatekeeping under different names.
Weight times rate is the whole invoice. Everything else on the quote is trucking, testing, or margin.
Disposal Cost by Treatment Path: Landfill, Thermal, Recycling
Landfill disposal is the default path and usually the cheapest. Gate fees for petroleum soil at Subtitle D facilities run from about $25 a ton at some public landfills to $75 or more where capacity is tight. For scale, an annual survey of 351 landfills put the national average tipping fee for ordinary municipal waste at $62 a ton in 2024, up 10 percent in a single year. Dedicated soil cells and monofills at private facilities price at the expensive end of that spread, and tight regional capacity can push past it.
Thermal desorption cost
Thermal desorption bakes the hydrocarbons out of the soil instead of burying them. Treatment pricing in published remediation studies lands between $52 and $69 a ton for average jobs, with quotes from $30 to well over $300 once contamination level, moisture, and job size are factored in. Wet clay costs more than dry sand for one blunt reason: the burner has to boil the water off first. Job size matters nearly as much as chemistry, since mobilizing a treatment unit for a small load spreads fixed costs over too few tons. The payoff is that treated soil often returns to commerce as clean fill instead of occupying landfill space.
Soil recycling and beneficial reuse
Recycling paths take petroleum soil into hot-mix asphalt, cold-mix asphalt, cement kilns, or brick plants where a state allows the beneficial use. New York's DEC guidance routes qualifying loads to approved asphalt plants, and Arizona attaches a $4.50 a ton state fee to shipments received at treatment facilities, capped at $45,000 per generator site per year under A.A.C. R18-13-1606. Recycling rates are quote-based, so treat any published number as a starting point for negotiation. Recyclers still demand the same lab package as landfills, meaning the profiling cost does not disappear, it just buys a cheaper destination.
Stack the full project on top of the gate fee. Excavation, trucking, lab work, and restoration push complete removal projects toward $270 to $460 per ton all in. Trucking is the line that moves most with geography, because a facility an hour farther out adds drive time and fuel to every single load rather than to the job once. The gate fee is often less than half the real number, and quotes that show only the gate fee are hiding the bigger half.
| Disposal path | Typical cost per ton | What drives it |
|---|---|---|
| Subtitle D landfill | $25 to $75 | Regional capacity. Public landfills sit at the low end, private at the high end |
| Dedicated soil cell or monofill | Top of the $25 to $75 band and above | Private facility pricing, and tight regional capacity can push past it |
| Thermal desorption | $52 to $69 typical, quoted $30 to over $300 | Moisture first, then contamination level and job size. Wet clay costs more than dry sand |
| Asphalt or cement recycling | Quote based | Whether the state allows the beneficial use, plant demand, and the same lab package |
| Subtitle C hazardous | $140 to $450 | A failed TCLP test, usually on benzene or on lead from old leaded gasoline |
How Many Tons Are You Actually Paying For?
Disposal quotes are priced by the ton, but excavators think in cubic yards. Typical excavated soil weighs about 1.4 to 1.6 tons per bank cubic yard. On oil tank removal jobs in New Jersey and elsewhere, a residential tank grave of 5 to 15 yards becomes roughly 8 to 24 tons on the scale. Commercial sites scale the same math into the hundreds, and a station pit dug for four tanks routinely crosses 200 tons once over-excavation chases the plume. Weigh the first few loads against the estimate and recalibrate early if they disagree.
Two conversions decide the bill. Density turns yards into tons, and swell turns in-ground yards into the larger loose volume that fills trucks, up to 35 percent more for clay. Estimate with the wrong density and a $6,000 budget quietly becomes $9,000 at the scale house. Swell also inflates trucking counts, because a truck fills on loose yards while the facility bills on tons, and the two can disagree about which limit binds.
Run your own numbers before the first quote arrives. The cubic yards to tons calculator below converts pit volume to tonnage, flags whether trucking is weight-limited or volume-limited, and applies the $50 to $200 per ton disposal band when the contaminated toggle is on. Set the material to match your soil, since clay, sand, and mixed fill each carry different densities and swell factors.
An estimate within 10 percent of the scale ticket is a good estimate.
Truck loads
Volume-limited: 1 load by weight, 2 by volume. Plan 2 trucks.
Petroleum-impacted soil from a tank excavation is a regulated waste stream, and nearly all of it stays non-hazardous under RCRA. That means the usual destination is a Subtitle D landfill permitted to accept it, not a hazardous waste facility. It still has to be profiled (lab-tested), hauled by a licensed transporter under the paperwork your state requires, and accepted by a permitted facility. Soil only moves to the far more expensive Subtitle C hazardous path when it fails a characteristic test, usually on benzene or on lead from old leaded gasoline. Facilities charge by the ton on certified scales, which is why the tonnage above, not the yardage, drives disposal cost. Stockpile suspect soil on and under poly sheeting until results are back, and expect the $/ton rate to vary with contamination level, facility distance, and state requirements.
How to Cut Disposal Costs Without Cutting Corners
Segregation saves more money than negotiation. Clean overburden stockpiled separately from impacted pit soil stops you from paying contaminated rates on dirt that never touched fuel, and it can cut billable tonnage by a third on a typical tank job. Silt fence, poly sheeting, and fifty feet of separation are cheap insurance against cross-contamination questions at the facility gate, and marked stockpiles keep equipment operators from blending them on a busy day.
Test early and test smart. Composite samples that average a hot spot across a big stockpile can push a borderline load over a threshold, while discrete sampling under your state's protocol keeps clean soil classified as clean. The state's own listings sit under Minnesota contractors. The lab bill for doing this right is small against a misclassified 100 ton stockpile billed at contaminated rates.
Shop the facility as hard as the hauler. Contaminated soil disposal rates for the same load range from $22 to $75 per ton within a single region. Haul distance is the counterweight, since a farther facility with a lower gate fee can still lose once you count drive time on every load. Ask each facility for its rate card in writing, including surcharges for moisture, debris, and odor, which is where list prices quietly grow.
Ask about reuse before disposal. States with beneficial use programs let lightly impacted soil go to asphalt plants or back into the excavation under remediation oversight in Minnesota and similar programs, which converts a disposal line item into a much smaller handling one. Reuse approvals take lead time, so raise the question during assessment, not after the stockpile is already sitting on plastic.
When to Bring In a Remediation Contractor
Hire remediation help the moment a load fails a test you did not expect. Petroleum releases trigger corrective action under 40 CFR 280 Subpart F, and the reporting, delineation, and closure steps that follow are not do-it-yourself paperwork. Reporting deadlines run in days rather than weeks in most states, and the cleanup is tracked by the same agency that will eventually sign your closure. Most states post their corrective action steps online, which makes checking a contractor's plan against the official sequence easy.
A qualified contractor earns the fee in three places. First, sampling design that keeps clean soil out of the contaminated bin. Second, facility relationships that shave $10 to $30 per ton off list rates. Third, closure documentation that produces the NFA letter future buyers and lenders will ask for. Interview for all three before price, because the cheapest per-ton bid loses money fast when the sampling plan is sloppy.
Most states run petroleum funds that repay eligible costs, and the federal LUST Trust Fund backs state programs where responsible parties cannot pay. Fund eligibility comes with procedural strings, so ask a bidder directly whether they have billed the fund before. For Virginia work, start at remediation in Virginia. Keep every scale ticket and disposal receipt in the reimbursement file, because funds audit tonnage line items against them. Ask the fund program for its claim checklist up front rather than reconstructing records at reimbursement time.
Get the tonnage estimate, then get three bids against it. Compare contaminated soil disposal rates, trucking, and lab line items separately, and request a free quote to reach remediation contractors who handle petroleum soil in your state. Written scopes make the three bids comparable, and comparable bids are what keep per-ton pricing honest. If the tank itself still needs to come out or close, the decommissioning vs removal guide covers that decision.