The ground limited quantity label is a plain black-and-white diamond mark, at least 100 millimeters on each side, that you place on the outside of a package containing small amounts of certain hazardous materials moving by highway or rail. When the package qualifies, the label replaces the standard hazard class labels and, in most cases, removes the need for hazmat shipping papers. It has been the only accepted mark for these shipments since January 1, 2021, when the older ORM-D marking was retired.1Pipeline and Hazardous Materials Safety Administration. ORM-D Phase-out Ends Dec 31 2020
What the Label Looks Like
The mark is a square set on one of its corners so it reads as a diamond. The top and bottom triangles are solid black; the center is white or another contrasting color and stays blank. Each side must measure at least 100 millimeters (about 3.9 inches) from the outside of the border, and the border itself must be at least 2 millimeters thick.2eCFR. 49 CFR 172.315 – Limited Quantities
A reduced version at 50 millimeters per side with a 1-millimeter border is allowed only when the package is physically too small for the full-size mark. PHMSA has confirmed in interpretation letters that using the reduced mark on a package large enough for the standard size is noncompliant.3Pipeline and Hazardous Materials Safety Administration. Interpretation Response 13-0163
One boundary worth flagging: the air-transport version of this label looks identical except it carries a bold letter “Y” in the center. A package marked with the “Y” can move by ground, but a package with a blank center cannot be tendered as a limited quantity for air transport.2eCFR. 49 CFR 172.315 – Limited Quantities
Whichever size you use, the mark must be printed on or affixed with material durable enough to survive moisture, temperature swings, and handling without fading or peeling.
Which Shipments Qualify
Two conditions govern eligibility. First, the Hazardous Materials Table at 49 CFR 172.101 must reference a limited quantity exception for the specific material you are shipping. Column 8A of the table points to the packaging exception section for each entry. If no exception is listed there, the material cannot ship under this label.4eCFR. 49 CFR 172.101 – Purpose and Use of Hazardous Materials Table
Second, the inner packaging volumes have to stay within the limits set for that material’s class and packing group. Classes that commonly qualify include Class 3 flammable liquids, Class 8 corrosives, Class 9 miscellaneous, some Division 2.2 compressed gases, Class 5 oxidizers, and Division 6.1 toxics. The volume caps differ. A Class 3 flammable liquid in Packing Group II is limited to inner containers of 1.0 liter each, Packing Group III allows up to 5.0 liters, and Packing Group I is held to 0.5 liters per inner container.5eCFR. 49 CFR 173.150 – Exceptions for Class 3 (Flammable and Combustible Liquids)
The completed package, including inner containers, cushioning, and the outer box, must not exceed 30 kilograms gross (about 66 pounds).6eCFR. 49 CFR 173.156 – Exceptions for Limited Quantity Materials Miss the inner container volume or the total package weight, and the shipment doesn’t qualify at all. It has to be prepared, labeled, and documented as fully regulated hazmat.
What the Label Lets You Skip
A qualifying package with the ground limited quantity mark is exempt from the standard hazard class labeling and from the marking rules that would normally require the proper shipping name and UN identification number on the outside of the box.2eCFR. 49 CFR 172.315 – Limited Quantities
For highway and rail transport, these packages are also exempt from shipping paper requirements, unless the material is separately classified as a hazardous substance or a hazardous waste.5eCFR. 49 CFR 173.150 – Exceptions for Class 3 (Flammable and Combustible Liquids) Without that exemption, every package would ride with a hazmat shipping paper listing the proper shipping name, hazard class, ID number, packing group, and emergency contact.
The exemptions don’t touch packaging integrity. Inner containers still have to sit within the class volume limits, the outer packaging still has to survive normal handling, and the general packaging standards in 49 CFR Part 173 Subpart B still apply.
When You Still Need Orientation Arrows
The limited quantity mark replaces hazard class labels, but it does not automatically eliminate the orientation arrows required for liquid hazmat. Under 49 CFR 172.312, non-bulk combination packages containing liquid inner containers must show upward-pointing arrows on two opposite vertical sides and must be transported closures-up.7eCFR. 49 CFR 172.312 – Liquid Hazardous Materials in Non-Bulk Packagings
Ground shipments get one carve-out: packages holding flammable liquids in inner containers of 1 liter or less, prepared under the limited quantity provisions of 49 CFR 173.150(b), do not need arrows when moving by highway or rail. If your inner containers exceed 1 liter, or the liquid falls under a different hazard class, the arrows are still required.7eCFR. 49 CFR 172.312 – Liquid Hazardous Materials in Non-Bulk Packagings
The Palletized Shipment Weight Exception
The 30-kilogram per-package cap has one meaningful exception. When packages move by highway or rail between a manufacturer, distribution center, and retail outlet, and they are organized into corrugated fiberboard trays, placed in a fiberboard box, and banded to a pallet with metal, fabric, or plastic straps to form a single palletized unit, the individual 30-kilogram limit doesn’t apply. The maximum net quantity of hazardous material for the entire palletized unit is 250 kilograms (550 pounds) instead.6eCFR. 49 CFR 173.156 – Exceptions for Limited Quantity Materials
This is the exception retail supply chains rely on to move pallets of aerosols, cleaning products, and similar goods to warehouse distribution points. The per-class inner packaging volume limits still apply, and each individual package on the pallet still needs the limited quantity mark. Only the weight threshold changes.
How To Place the Label on the Package
The mark must appear on at least one side or one end of the outer packaging and be readily visible. Apply it to a clean, flat surface with the diamond resting on one corner, not lying flat on a side. If you’re using an adhesive label, press it down so there are no wrinkles or bubbles that could obscure the black tips.
Keep tape, stretch wrap, strapping, and other markings clear of the label. The regulation requires it to be readily visible and legible, so anything that covers even part of the diamond undermines compliance.2eCFR. 49 CFR 172.315 – Limited Quantities Placing the mark on the same face as the shipping label works well in practice, since carriers keep that side facing out. The full mark needs to sit on a single flat surface; wrapping it around an edge distorts the shape and defeats the visibility requirement.
Training You Must Have
Anyone who prepares, packages, marks, or offers a limited quantity shipment is a hazmat employee under federal law and must be trained before performing those tasks unsupervised. Training covers four areas: general awareness of hazmat regulations, function-specific instruction for the actual job, safety training on emergency response and exposure, and security awareness on recognizing threats during transport.8eCFR. 49 CFR 172.704 – Training Requirements
A new hire can perform hazmat functions before finishing training only under direct supervision of a properly trained employee. Security awareness training must be completed within 90 days of hire. Training has to be refreshed on a recurring basis, and the employer must keep records for each hazmat employee for the previous three years, plus 90 days after the employee leaves or stops handling hazmat.8eCFR. 49 CFR 172.704 – Training Requirements
This trips up small businesses. A warehouse worker who applies the limited quantity label is a hazmat employee, even when the products are everyday items like hand sanitizer or spray paint. The training doesn’t need to be elaborate, but it does need to exist and be documented. The minimum civil penalty for a training violation alone is $617.9eCFR. 49 CFR 107.329 – Maximum Penalties
Penalties for Getting It Wrong
A knowing violation of the federal hazardous materials transportation law carries a civil penalty of up to $102,348 per violation. If the violation results in death, serious injury, or substantial property destruction, the maximum rises to $238,809. Each day a violation continues counts as a separate offense, so a recurring packaging error at a busy shipping operation adds up quickly.9eCFR. 49 CFR 107.329 – Maximum Penalties
These penalties reach anyone who offers the package for transport, not just the carrier. Hand a mislabeled box to a courier and you are the offeror. Common violations include applying the mark to a package that exceeds the inner container volume limits, exceeding the 30-kilogram gross weight without meeting the palletized-unit exception, and failing to keep training records for the required period. Responsibility for correct classification and marking sits entirely with the person who prepares and offers the shipment.