Land Disposal Restrictions (LDR)

Before 1984, hazardous waste could legally be buried in a landfill with no treatment requirement at all — which is exactly how a lot of groundwater contamination happened. The Hazardous and Solid Waste Amendments of 1984 added the Land Disposal Restrictions program (40 CFR Part 268) specifically to close that gap: a prohibited waste can only be land disposed once it meets a treatment standard, full stop.

The disposal prohibition (§268.40)

For every waste code, EPA's treatment standards table specifies one of three kinds of requirement:

• A concentration limit on the waste extract (TCLP) — mostly used for metals, and a few organics. The same leaching-simulation test used to determine toxicity characteristic waste in the first place, but now checked against a treatment threshold rather than a hazard threshold.
• A concentration limit on the total waste — mostly organics, measured as the actual amount present in the waste (not just what leaches out).
• A specified treatment technology — not a number at all. The waste must be treated using a named method (e.g. CMBST for combustion, DEACT for deactivation, RORGS for reactive organics treatment) — or an equivalent technology approved by EPA.

Many entries also require the result to separately meet the Universal Treatment Standards (40 CFR 268.48) for underlying hazardous constituents — other hazardous properties the waste might have beyond the one that got it its code in the first place.

Wastewater vs. nonwastewater

Treatment standards are frequently split by whether the waste is a wastewater or nonwastewater — nonwastewaters generally face stricter standards, since they're more concentrated. A common practical threshold: less than 1% total suspended solids and total organic carbon is treated as wastewater; anything above that is nonwastewater.

Subcategories change everything

The same waste code can have very different standards depending on its subcategory. D001 (ignitable waste) is the clearest example: general D001 waste has one standard, but the High-TOC Ignitable Liquids Subcategory (≥10% total organic carbon, nonwastewaters only) has a completely different one — combustion or an equivalent technology, not a deactivation standard. Several metal codes (D006, D008, D009, D011) have their own subcategories too, for batteries and radioactively contaminated materials specifically.

The generator's obligation: a notice, not a treatment

Under 40 CFR 268.7(a), the generator's job isn't to treat the waste themselves in most cases — it's to tell the receiving facility, in writing, what they're getting:

• The EPA hazardous waste code(s) and applicable treatment subcategory
• Whether it's a wastewater or nonwastewater
• The constituents of concern (for listed wastes) or the regulated constituent (for toxicity-characteristic wastes)
• Waste analysis data, when available

A small number of situations additionally require a signed certification — for example, if the waste has already been treated to meet its standard, or if it's a lab pack going to a combustion facility under the alternative standard at 40 CFR 268.42(c). Most notices don't require one at all.

One notice, not one per shipment

A genuinely useful detail that's easy to miss: the notice is required once per generator/waste-stream/receiving-facility combination — not regenerated for every shipment. A new one is only required if the waste or the receiving facility changes. In practice, many facilities still ask for a copy with every manifest anyway, but the underlying regulatory requirement is a standing notice, which is exactly how ManifestMate's LDR tool models it — it checks whether an active notice already exists for that combination before letting you file a duplicate.

Retain a copy of every LDR notice for at least 3 years from the date the waste was last shipped, same as manifest recordkeeping.