AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3
11 DECEMBER 2001
A4.5. Hazardous Substances. Table A4.3 identifies materials that are designated hazardous substances under
Section 101 (14) of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). See
attachment 1 for a detailed definition of a hazardous substance. Ensure review of table A4.3 to determine if a
material is a hazardous substance.
Determine if the material is a hazardous substance by identifying the reportable quantity (RQ) in table
A4.3. The RQ is used to determine if material is a hazardous substance. The material is a hazardous
substance if the amount in one package equal or exceeds the RQ quantity. Table A4.3 specifies, in pounds
and kilograms, the minimum quantity of the material that constitutes an RQ. For example: sodium
arsenate (RQ-1.0/0.454) means the RQ is 1.0 pounds or 0.454 kilograms.
A substance or solution is a "hazardous substance" when the concentration by weight equals or exceeds the
concentration listed in figure A1.1.
If the technical name of the hazardous substance appears in table A4.1, then the technical name is the PSN.
If the hazardous substance does not appear in table A4.1 and is not a forbidden material, select an
appropriate generic (N.O.S.) PSN. Specify the technical name in parenthesis after the PSN. See
attachment 17 for certification requirements.
For Radionuclides, see 49 CFR 172.101, Appendix A.