Substances subject to additional requirements for air transport to, from or within the United States are described below. The additional requirements in III also apply to U.S. carriers operating outside the U.S.

1. Hazardous substances. When a substance, including its mixtures and solutions, listed in Appendix A to 49 CFR 172.101 is offered for transport in a package in which the net quantity of the substance equals or exceeds the reportable quantity (RQ) indicated for the substance in Appendix A, the substance, mixture or solution is considered a hazardous substance unless:

   - it is a petroleum product that is a lubricant or fuel; or
   - it is in a concentration less than that shown in the following table based on the RQ specified for the material:

   RQ Kilograms | Concentration Per cent | by weight PPM
   45.4 | 0.2 | 2 000
   4.54 | 0.02 | 200
   0.45 | 0.002 | 20

   For mixtures of radionuclides, see Note 7 to Appendix A to 49 CFR 172.101.

   Hazardous substances, except for those that are hazardous wastes as defined in Section II below, must comply with the following requirements:

   1. For a hazardous substance that is a dangerous good according to these Technical Instructions other than under the proper shipping names "ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S." or "ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.":

      1. unless already included in the required shipping name, and except for radioactive material in Class 7, the name of the hazardous substance shall be shown in parentheses, in association with the dangerous goods description on the transport document and in association with the proper shipping name on package marking. If the material contains two or more hazardous substances, at least two hazardous substances, including the two with the lowest reportable quantities (RQs), must be identified; and

      2. the letters "RQ" shall be entered on the transport document either before or after the basic description and in association with the proper shipping name required to be marked on the package.

   2. For hazardous substances that do not meet any other definition of dangerous goods according to these Technical Instructions:

      1. the hazardous substance shall be shipped under the basic dangerous goods description "UN 3082, ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S., Class 9, III" or "UN 3077, ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S., Class 9, III", as appropriate, and in accordance with the requirements of these Technical Instructions applying to the shipment of goods under this description;

      2. except for 4;1.1.6, the package must meet all applicable General Packing Requirements of Part 4, Chapter 1 of these Instructions that would apply to dangerous goods of Packing Group III;

      3. the letters "RQ" shall be entered on the transport document either before or after the basic description and in association with the proper shipping name required to be marked on the package; and

      4. the name of the hazardous substance shall be shown in parentheses, in association with the dangerous goods description on the transport document and in association with the proper shipping name on package marking. If the material contains two or more hazardous substances, at least two hazardous substances, including the two with the lowest reportable quantities (RQs), must be identified.

   - Note.- The list of Hazardous Substances and the applicable RQ as shown in Appendix A to 49 CFR 172.101 is available via the internet at:

     http://www.phmsa.dot.gov/hazmat/regs/international/icao

2. Hazardous waste.A hazardous waste is any material that is subject to the hazardous waste manifest requirements of the United States Environmental Protection Agency (EPA) specified in 40 CFR Part 262. The following requirements apply to the transport of hazardous wastes:

   1. For a hazardous waste that is a dangerous good according to these Technical Instructions other than under the proper shipping names "ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S." or "ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.":

      1. the word "WASTE" must precede the proper shipping name in the transport document and package markings; and

      2. the requirements of 49 CFR 172.205, with respect to the hazardous waste manifest apply.

   2. For hazardous wastes that do not meet any other definition of dangerous goods according to these Technical Instructions:

      1. the hazardous wastes shall be shipped under the basic dangerous goods description "UN 3082, WASTE ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S., Class 9, III" or "UN 3077, WASTE ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S., Class 9, III", as appropriate, and in accordance with the requirements of these Technical Instructions applying to the shipment of goods under this description;

      2. the package must meet all applicable General Packing Requirements of Part 4, Chapter 1 that would apply to dangerous goods of Packing Group III;

      3. the requirements of 49 CFR 172.205 with respect to the hazardous waste manifest apply; and

      4. for those hazardous wastes that meet the definition of a hazardous substance, the letters "Q" and the name of the hazardous substance in parentheses shall be shown in association with the basic description on transport documents and package markings. association with the basic description on transport documents and package markings. If the material contains two or more hazardous substances, at least two hazardous substances, including the two with the lowest reportable quantities (RQs), must be identified.

   - Note 1.- Hazardous wastes can only be transported within the United States by carriers who have obtained a Waste Transporter Identification Number from the Environmental Protection Agency (EPA).

   - Note 2.- The assignment of substances described in I and II above to UN 3077 and UN 3082 is in accordance with special provision A97 of these Technical Instructions.

   - Note 3.- The list of Hazardous Substances and the applicable RQ as shown in Appendix A to 49 CFR 172.101 is available via the internet at:

     http://www.phmsa.dot.gov/hazmat/regs/international/icao

3. Other materials. Materials which are not subject to the requirements of these Technical Instructions but meet the definition of a hazard class in 49 CFR Parts 171-180 must be transported in accordance with those regulations.