It's easy to think of the manifest as purely a RCRA paperwork requirement. It's actually doing double duty: DOT (the Department of Transportation) separately requires shipping papers for any hazardous material in transport, describing what's being shipped and how much. Rather than making generators fill out two different documents, EPA designed the manifest to satisfy both requirements in one form.
Two questions, answered by one document
- DOT's question: what material is being shipped, and how much of it? — answered by each waste line's DOT description: proper shipping name, hazard class, UN/NA ID number, packing group, and quantity/container information.
- RCRA's question: who has had possession of this waste, and when was it transferred? — answered by the generator/transporter/facility signature chain, each with a date.
What's actually on the form
The manifest (EPA Form 8700-22) has three main parts:
- Parties — the generator, one or more transporters (in the order they'll handle the shipment), and the designated (receiving) facility. Each is identified by name, address, and EPA ID number.
- Waste line items — one row per distinct waste stream, each with its DOT shipping description, quantity and container info, and its EPA hazardous waste code(s) (the D/F/K/P/U codes covered in the waste determination article).
- Certifications — the generator's signature (certifying the shipment is properly described, classified, and packaged — and, for large/small quantity generators, that the waste minimization statement under 40 CFR 262.27 is true), each transporter's acknowledgment of receipt, and the designated facility's certification of receipt.
In ManifestMate, this is exactly what Create a manifest builds, and what each "Sign as…" button on the lookup page certifies — the signature order (generator → transporter(s) → facility) is enforced by RCRAInfo itself, not just by ManifestMate's UI.
Net weight or gross weight?
DOT lets a shipper report either the net weight (the waste itself) or the gross weight (waste plus its container/packaging) on a shipping paper — a PHMSA interpretation letter (Ref. No. 22-0022) confirms either is acceptable. In practice, many experienced preparers default to gross weight anyway, since that's what a roadside inspection is more likely to check against.
The tricky case is a lab pack containing a small amount of acutely hazardous (P-listed) waste packed alongside other materials. Reporting the whole lab pack's gross weight under the acute waste code can make it look like the entire weight is acutely hazardous, when only a fraction of it actually is — which can distort a generator's monthly hazardous-waste-generator status determination if that number gets reused elsewhere. (That monthly status determination is calculated independently, from actual waste weight — it doesn't pull from manifest data — but an inflated number on the manifest itself can still cause confusion later.)
- Where practical, list the acute waste on its own waste line, separate from the rest of the lab pack's contents.
- Use Box 14 (Special Handling Instructions) to note the actual acute-waste weight, if it's not obvious from the waste line itself — this is exactly what that field is for.
- Keep your own packing list or inventory sheet for each lab pack — it's not a manifest requirement, but it's what you'll need if anyone ever asks how you arrived at a quantity.
In ManifestMate, every waste line has a Special Handling Instructions field that prints directly into Box 14 — use it for this kind of clarifying detail whenever a single quantity number doesn't tell the whole story.
If a signed copy doesn't come back — exception reports
The generator's copy of the manifest is supposed to come back signed by the designated facility once the shipment actually arrives and is accepted. If it doesn't, 40 CFR 262.42 requires action on a clock:
- At 35 days after shipment, contact the designated facility to find out what happened.
- At 45 days, if you still don't have a signed copy, submit an exception report to your state/EPA regional office — a letter describing the efforts made to locate the waste, plus a copy of the manifest.
Keep records
Generators must keep signed manifest copies for at least 3 years from the date of shipment. ManifestMate's dashboard and stored-document history exist specifically to make that easy — every manifest you create or sign through the app stays retrievable long after the fact.