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US remediation · 2026
By
, Research & Reference Desk
October 28, 2026
A diesel release at a former fuel depot and a crude-oil release across agricultural ground both create petroleum-impacted soil. They can require different treatment plans. Fuel composition, weathering, depth, moisture and groundwater conditions determine what has to be removed or managed. A useful US soil-treatment plan starts with that profile and the site's cleanup objectives, before equipment is selected.
Total petroleum hydrocarbons describe a measured range of petroleum compounds. Results depend on the analytical method and the carbon ranges reported. Gasoline-range, diesel-range and heavier oil-range results should retain their method names, reporting limits and sample locations when they are supplied to a contractor. A single total cannot describe volatility, mobility or every exposure concern.
BTEX and PAHs may need separate analysis. Site history also matters: fuels stored alongside solvents, metals or other industrial materials can leave co-contaminants that change treatment suitability and receiving-facility acceptance. Confirm the investigation scope with the environmental professional and the applicable state program.
Identify the product, release history and any recovered free product.
Supply TPH methods and ranges, BTEX and relevant PAHs with reporting limits.
Map sample depths and locations against the estimated affected soil volume.
Include groundwater and soil-vapor findings where those pathways matter.
For volatile petroleum constituents in permeable unsaturated soil, soil vapor extraction can be considered. Biological methods depend on contaminant biodegradability and conditions that support microbial activity. Chemical treatment depends on reagent delivery and site-specific demand. These approaches need their own design and monitoring evidence; a fuel label alone does not select the remedy.
For suitable excavated petroleum-impacted soils, thermal desorption heats the material to separate organic contaminants from the soil matrix. The vapor stream then needs capture and treatment. Soil moisture, particle size, organic content, debris and contaminant loading shape feed preparation and operating conditions. Metals are not destroyed by thermal desorption and require separate management.
Excavation and permitted disposal can also form part of the plan. Different zones may have different destinations, especially where soil, debris, water and residuals have distinct profiles. Compare each option against the same cleanup objective and material boundary.
At petroleum underground storage tank sites, the state or implementing agency's corrective-action process governs the cleanup decision. EPA's alternative cleanup technology guide is a useful technical starting point, not a substitute for the program's current requirements. Pipeline releases and industrial properties may enter different oversight processes.
Define the site-specific soil and groundwater objectives, intended land use and verification requirements separately from the operating approvals for a treatment plant. Air emissions, water management and waste handling can involve different authorities. The planning team should confirm which requirements apply to the actual material and proposed operation.
Nelson's Tioga project in North Dakota is a documented example of mobile thermal treatment of Bakken-crude-impacted soil. The project record reports approximately 1.2 million tons thermally treated. It establishes relevant petroleum-soil experience at industrial scale; it does not establish a temperature, throughput or cleanup target for every other US site.
For a diesel depot, terminal or pipeline project, ask how your feed differs from that reference: moisture, petroleum fractions, co-contaminants, available working area and final soil use. A credible proposal explains those differences rather than applying the reference project's results as a blanket guarantee.
Specify which contaminants will be tested in treated soil, the sampling units, analytical methods and reporting limits. Define how material will remain traceable from excavation or stockpile through treatment to its approved destination. Nonconforming material needs a documented hold, reassessment or retreatment pathway.
Soil chemistry and emissions compliance are separate evidence streams. A satisfactory treated-soil sample does not establish off-gas performance, and stack performance does not establish soil reuse suitability. Both should be connected to the agreed project scope and the relevant approval conditions.
Project records and technical reading
Tioga petroleum-soil project record
US thermal remediation and contractor selection
Compare soil remediation methods
US hydrocarbon remediation planning
US remediation library
Contaminated soil management in the US: from excavation to an accepted destination
US remediation project evidence: what Tioga and Honolulu tell a project owner
Discuss your US site and treatment scope
HOW WE KNOW THIS
Original Nelson guidance based on the linked public sources and approved project records. Confirm current federal, state and local requirements with qualified environmental professionals. Project references do not guarantee another site's performance, approvals or closure. Treatment and permitted disposal are site-specific options.
U.S. EPA. How to evaluate alternative cleanup technologies for underground storage tank sites. https://www.epa.gov/ust/how-evaluate-alternative-cleanup-technologies-underground-storage-tank-sites-guide-corrective
U.S. EPA. Cleaning up underground storage tank releases. https://www.epa.gov/ust/cleaning-underground-storage-tank-ust-releases
FAQ
Can diesel-contaminated soil be thermally treated?
Is a TPH result enough to select soil treatment?No. TPH results need their analytical methods and ranges, alongside relevant BTEX, PAHs, co-contaminants, sample locations and soil conditions. The cleanup program and conceptual site model determine which results are required.
US remediation library
Material managementIs all contaminated soil hazardous waste in the US?
Project evidenceWhich US soil remediation projects has Nelson documented?
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The Hub / Petroleum hydrocarbons
Public petroleum hydrocarbon records by jurisdiction, with the cleanup standard each regulator applies.
Plus 16,170 release events reported across the United States and Canada in the last 12 months, spills, pipeline and rail incidents, fires and AFFF discharges, updated to 2026-08-16.
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Thermal desorption can be assessed for suitable diesel-impacted soil. Selection depends on the full analytical profile, moisture, soil characteristics, operating approvals and cleanup objectives. Treatability and verification requirements should be defined for the actual material.