
Diesel fuel is widely used in industry and is considered more efficient than gasoline. However, spills are inevitable and can lead to questions about whether diesel fuel is a hazardous waste under RCRA (Resource Conservation and Recovery Act) regulations. While diesel fuel is not specifically listed as a hazardous substance in Appendix A of 49 CFR 172.101, certain components of diesel fuel, such as naphthalene, are identified as hazardous substances. In most cases, diesel fuel meets the criteria for a Class 3 Combustible liquid, but it is not RCRA ignitable. When disposing of diesel spill cleanup residues, facilities must determine if the waste is exempt, listed, or characteristic of hazardous waste. If the diesel fuel can be reclaimed or recycled, it is not considered solid or hazardous waste.
| Characteristics | Values |
|---|---|
| Diesel fuel listed as a hazardous substance | No |
| Diesel fuel considered a hazardous material | Yes |
| Diesel fuel RCRA ignitable | No |
| Diesel fuel spills considered solid waste | Yes |
| Diesel fuel spills considered hazardous waste | Maybe |
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What You'll Learn
- Diesel fuel is not a hazardous substance, but it is a hazardous material
- Diesel spills must be cleaned up and disposed of like other waste
- Diesel is exempt from RCRA ignitability regulations
- Diesel fuel components are listed in the hazardous substances table
- Diesel spills are evaluated for toxicity and ignitability

Diesel fuel is not a hazardous substance, but it is a hazardous material
Diesel fuel is not a hazardous substance, but it is classified as a hazardous material. This is because, according to the Hazardous Materials Regulations (HMR), the term "hazardous material" includes "hazardous substances". However, diesel fuel is not specifically listed or designated as a hazardous substance in the Hazardous Substances Table (Appendix A to 49 CFR 172.101). It is important to note that while diesel fuel itself is not a hazardous substance, some of its components, such as naphthalene, are identified by name in the hazardous substances table and may be considered hazardous substances.
When it comes to spills and disposal, diesel fuel is not considered RCRA (Resource Conservation and Recovery Act) ignitable, which is a benefit compared to gasoline. However, in the event of a diesel fuel spill, the same RCRA questions need to be asked and answered as for any other discarded material. If the spilled diesel is to be disposed of, it is considered solid waste, and the facility must evaluate its characteristics, such as ignitability and toxicity, to determine its hazardous nature.
It is important to distinguish between "hazardous substance" and "hazardous waste" in the context of diesel fuel. If the diesel fuel can still be used for its intended purpose or reclaimed, it is not considered solid waste and, therefore, not hazardous waste. Off-specification commercial chemical products, such as contaminated diesel, that are destined for reclamation are also not considered solid or hazardous waste. However, if the diesel fuel spill residue is to be disposed of, it may be classified as hazardous waste depending on its characteristics.
In summary, while diesel fuel is not a hazardous substance, it is considered a hazardous material due to its inclusion in the Hazardous Materials Table and its flammable nature. The classification of diesel fuel as hazardous waste depends on various factors, including its intended use, reclamation potential, and the characteristics of any spill residue that may require disposal. It is important to refer to the specific regulations and guidelines, such as the HMR and RCRA, to determine the appropriate handling and disposal procedures for diesel fuel.
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Diesel spills must be cleaned up and disposed of like other waste
Diesel fuel is widely used in industry and is more efficient than gasoline. However, spills are inevitable and must be cleaned up. While diesel fuel is not specifically listed as a hazardous substance, its components (e.g. naphthalene) are considered hazardous materials and may be regulated as such.
When disposing of diesel spill cleanup residues, it is important to determine if the material is exempt from regulation. If the spill is from an underground storage tank, it may be exempt under certain conditions. If the diesel can still be used for its intended purpose, it is not considered solid waste and is therefore not subject to hazardous waste regulations.
However, if the diesel fuel is contaminated and cannot be reclaimed, it may be considered solid waste. In this case, the facility must evaluate the waste to determine if it exhibits any hazardous characteristics, such as ignitability or toxicity. If the waste is determined to be hazardous, it must be disposed of in accordance with hazardous waste regulations.
It is important to note that diesel fuel is not RCRA ignitable, which means it does not meet the criteria for being a hazardous waste due to its ignitability. However, it is still important to properly clean up and dispose of diesel spills to prevent any potential environmental or health risks.
Overall, while diesel fuel itself may not be classified as a hazardous waste, the decision to dispose of diesel spill cleanup residues requires a careful evaluation of the specific circumstances and applicable regulations. Proper procedures must be followed to ensure compliance with waste management guidelines.
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Diesel is exempt from RCRA ignitability regulations
Diesel fuel is not considered a hazardous substance in the US. However, it is classified as a hazardous material. This distinction is important as it means diesel has some regulatory exemptions, including being exempt from RCRA ignitability regulations.
RCRA stands for the Resource Conservation and Recovery Act, which is the principal federal legislation dealing with solid and hazardous waste in the US. The act gives the US Environmental Protection Agency (EPA) the authority to regulate the handling of hazardous waste "from cradle to grave".
While diesel fuel is not considered a hazardous substance, some of its components are. For example, naphthalene, a component of diesel fuel, is listed as a hazardous substance. However, diesel fuel itself is not specifically listed or designated as a hazardous substance in Appendix A of 49 CFR 172.101. Therefore, it does not have a reportable quantity (RQ) and is not subject to the same regulations as hazardous substances.
Diesel fuel is also not considered a solid waste, which further contributes to its exemption from certain RCRA regulations. According to McCoy and Associates, if diesel can still be used for its intended purpose after a spill, it is not considered a solid waste and is therefore not regulated as a hazardous waste. This is also true for contaminated diesel that is destined for reclamation.
However, it's important to note that while diesel fuel itself may be exempt from certain RCRA regulations, spills and cleanup residues may still be subject to regulatory requirements. Facilities must evaluate the solid waste from a diesel spill to determine if it exhibits any characteristics, such as ignitability or toxicity, that would classify it as a hazardous waste.
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Diesel fuel components are listed in the hazardous substances table
While diesel fuel is not listed as a hazardous substance, its components are. Diesel fuel is widely used in industry and is considered more efficient and less ignitable than gasoline. However, when spills occur, the resulting cleanup residue is considered solid waste. To determine if this solid waste is hazardous, facilities must evaluate it for characteristics such as ignitability and toxicity.
Diesel fuel and gasoline are considered "petroleum, including crude oil or any fraction thereof". While they are not specifically listed or designated as hazardous substances, they are typically classified as hazardous materials. This distinction is important, as hazardous materials are defined as including hazardous substances, but not all hazardous materials are hazardous substances.
The Hazardous Materials Compliance Pocketbook, while a good source of information, is a guidance document and not a substitute for the Hazardous Materials Regulations. According to the Pocketbook, diesel fuel and gasoline are not identified as hazardous substances in Appendix A to 49 CFR 172.101. However, components of diesel fuel, such as naphthalene, and components of gasoline, such as benzene, are listed in the hazardous substances table. These components may be hazardous by themselves or in other solutions.
In summary, while diesel fuel itself may not be listed as a hazardous substance, its components are. This distinction is important in understanding the regulatory framework surrounding diesel fuel and its potential hazards. When dealing with diesel fuel spills and their cleanup, it is crucial to refer to the relevant regulations and guidelines to ensure proper handling and disposal.
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Diesel spills are evaluated for toxicity and ignitability
Diesel fuel is widely used in industry and is more efficient than gasoline. However, spills are inevitable. If a facility decides not to clean up a spill, the diesel is considered discarded material and classified as solid waste. A hazardous waste determination must be made per §262.11. The facility must evaluate the solid waste to determine if it exhibits any characteristics, such as ignitability or toxicity.
Diesel fuel is not considered a hazardous substance under RCRA regulations. However, it is classified as a hazardous material and will usually meet the criteria for a Class 3 Flammable or Combustible liquid. If a decision is made to dispose of the spill cleanup residue, the facility must assess whether it is exempt, listed, or characteristic. There are no exemptions or listed codes for diesel, but it may be considered characteristic if it exhibits ignitability or toxicity.
The evaluation of toxicity and ignitability in diesel spills is crucial for determining the proper classification and disposal methods. If the diesel spill residue exhibits ignitability or toxicity characteristics, it may be classified as hazardous waste and subject to RCRA permitting requirements. The facility must also consider federal, state, and local regulations when assessing the impact of a diesel spill.
While diesel fuel itself is not considered a hazardous substance, its components, such as naphthalene, are listed in the hazardous substances table. These components may be hazardous by themselves or in other solutions. Therefore, the evaluation of toxicity and ignitability in diesel spills involves assessing the presence and concentration of these hazardous components. The determination of hazardous waste is based on the specific characteristics and composition of the diesel spill residue.
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Frequently asked questions
Diesel fuel is not considered a hazardous substance, but it is usually considered a hazardous material. It is not RCRA ignitable, unlike gasoline.
If there is a diesel spill, the same RCRA questions need to be asked and answered as for any other discarded material. If the spilled diesel is being disposed of, it is considered solid waste and is subject to further evaluation.
Diesel fuel is not RCRA-regulated hazardous waste. If the diesel can still be used for its intended purpose, it is not considered solid or hazardous waste.









































