As with contaminated soil, debris is very different in physical form from the process wastes that EPA evaluated when establishing LDR treatment standards. The definition of debris in §268.2(g) is:
"Debris means solid material exceeding a 60 mm particle size that is intended for disposal and that is: a manufactured object; or plant or animal matter; or natural geologic material. However, the following materials are not debris: any material for which a specific treatment standard is provided in Subpart D, Part 268, namely lead-acid batteries, cadmium batteries, and radioactive lead solids; process residuals such as smelter slag and residues from the treatment of waste, wastewater, sludges, or air emission residues; and intact containers of hazardous waste that are not ruptured and that retain at least 75% of their original volume. A mixture of debris that has not been treated to the standards provided by §268.45 and other material is subject to regulation as debris if the mixture is comprised primarily of debris, by volume, based on visual inspection."
Several aspects of the debris definition warrant discussion:
"Debris means solid material exceeding a 60 mm particle size that is intended for disposal and that is: a manufactured object; or plant or animal matter; or natural geologic material. However, the following materials are not debris: any material for which a specific treatment standard is provided in Subpart D, Part 268, namely lead-acid batteries, cadmium batteries, and radioactive lead solids; process residuals such as smelter slag and residues from the treatment of waste, wastewater, sludges, or air emission residues; and intact containers of hazardous waste that are not ruptured and that retain at least 75% of their original volume. A mixture of debris that has not been treated to the standards provided by §268.45 and other material is subject to regulation as debris if the mixture is comprised primarily of debris, by volume, based on visual inspection."
Several aspects of the debris definition warrant discussion:
- Debris is material that is bigger in one dimension than 2.5 inches (60 mm).
- Debris is material that is intended for disposal. When manufacturing operations are shut down, a very common material that is encountered is metallic equipment and components that might be contaminated with hazardous constituents. If this material is recycled instead of disposed, it is not "debris" subject to the LDR debris standards. In other words, recycling rather than disposing material may eliminate the need to comply with the debris standards.
- Examples of manufactured objects that are "debris" are gloves and other personal protective equipment, solder paste wipes, pipes, pumps, valves, etc. that will be disposed (perhaps due to radioactive contamination that makes them nonrecyclable). [RO 14660]
- An example of plant material that would be "debris" is a tree stump.
- An example of geologic material that would be "debris" is a rock.
- The language about intact containers addresses drums that might be dug up as part of a remediation project. If the drums contain hazardous waste and are intact, the contents of the drums must be treated to meet §268.40 standards for whatever waste codes are associated with the contained wastes. In other words, intact drums of hazardous waste are not eligible for the more lenient alternative treatment standards for debris. On the other hand, if a ruptured drum is excavated, it may be managed under the debris standards.
- The language about material being primarily debris based on visual inspection implies that it is not necessary to run a sieve analysis to determine if a waste is mostly debris, as opposed to something else (e.g., soil). A visual assessment is all that is required.
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