What the LDR program does

The Land Disposal Restrictions prohibit land disposal of hazardous waste unless treatment standards and other conditions are met. The standards can be concentration-based or require a specified treatment technology. The generator’s role begins before shipment by identifying which standards apply and communicating the required information.

An approved waste profile or a receiving facility’s acceptance does not replace the generator’s LDR determination. A manifest also does not contain every item required for an LDR notice.

Follow the LDR decision sequence

1. Confirm the waste and codes. Start with the current hazardous waste determination, including all applicable federal and state codes.
2. Identify the waste category. Determine whether the waste is wastewater or nonwastewater for the applicable treatment table and whether special standards or alternative provisions apply.
3. Find the treatment standards. Use 40 CFR 268.40 and related sections to identify constituent concentrations or required technologies.
4. Evaluate underlying hazardous constituents. Characteristic wastes may require treatment of underlying hazardous constituents under the universal treatment standards, subject to the precise rule and exceptions.
5. Determine treatment status. Decide whether the waste meets the applicable standard at the point addressed by the rule and what evidence supports that conclusion.
6. Prepare the notice or certification. Provide the required information to the treatment or disposal facility and update it when the waste or process changes as required.

Use knowledge and testing for the LDR question

The LDR determination may use knowledge of the waste or testing as allowed by the rule. The evidence must answer the treatment-standard question, not merely repeat the hazardous waste determination. For variable wastes, define how sampling represents the stream and how often data are refreshed.

Coordinate with the treatment facility about data needs, but distinguish regulatory treatment standards from the facility’s acceptance limits and analytical methods. Both can matter operationally; they have different sources.

Worked example: characteristic metal-bearing sludge

Simplified example. A generator determines that a sludge exhibits a toxicity characteristic for a metal. The LDR review identifies the applicable code and nonwastewater treatment standard, then evaluates whether underlying hazardous constituents must also be addressed. Representative data and process knowledge support the analysis.

The generator prepares the required notice for the receiving facility, keeps it with the determination and profile, and sets review triggers for process chemistry, raw-material, or treatment changes. The manifest identifies the shipment, while the LDR notice communicates the treatment-standard information.

Control notices, certifications, and retention

Use a controlled template that captures the manifest number when applicable, waste codes, wastewater or nonwastewater status, applicable treatment standards, underlying hazardous constituent information, certification language when required, treatment or exclusion basis, and receiving facility.

Generators retain copies of notices, certifications, demonstrations, waste analyses, and other records required by 40 CFR 268.7 for at least three years from the date the waste that is the subject of the records was last sent to onsite or offsite treatment, storage, or disposal. The period can be extended automatically during unresolved enforcement or as requested by EPA.

Common LDR mistakes

• Assuming the manifest or profile is the LDR notice.
• Leaving out an applicable waste code.
• Using the wrong wastewater or nonwastewater standard.
• Overlooking underlying hazardous constituents for characteristic waste.
• Copying a prior notice after the process or waste changed.
• Treating a receiving-facility limit as the federal treatment standard.
• Signing a certification without supporting knowledge or analysis.
• Filing the LDR record where it cannot be linked to the waste and shipment.