Listed Hazardous Wastes

The F-list (40 CFR Part 261.31) identifies seven major categories of wastes from common manufacturing and industrial processes as hazardous.^1,2,9 Because the processes generating these wastes occur in different sectors of industry, F-listed wastes are considered non-source specific wastes. With the possible exception of non-halogenated solvents such as acetone or xylene (EPA code F003 [I and T]), F-listed wastes are not likely to be found in oral healthcare facilities.^1,2,9

The K-list identifies hazardous wastes from specific sectors of industry and manufacturing and, therefore, K-listed wastes are considered source-specific wastes.^1,2,9 To qualify as a K-listed hazardous waste, the waste must fit into one of the 13 major categories on the list and the waste must match one of the detailed K-list waste descriptions (40 CFR Part 261.32).^1,2,9 K-listed wastes are not likely to be found in oral healthcare facilities.

The P- and U-lists designate as hazardous waste pure and commercial grade formulations of certain chemicals.^1,2,9 For a waste to be considered a P- or U-listed waste it must meet the following three criteria: (1) it must contain one of the chemicals listed on the P or U list; (2) the chemical in the waste must be unused; and (3) the chemical in the waste must be 100 percent pure, commercial grade, or the sole active ingredient in a formulation.

The P-list (40 CFR Part 261.33) identifies over 235 acutely toxic hazardous wastes from discarded commercial chemical products.  Examples of P-listed chemicals found in oral healthcare facilities include epinephrine (P042[H]) and nitroglycerin (P081[H and R]).^1,2,9 The U-list (40 CFR Part 261.33) identifies over 470 hazardous wastes. Examples of U-listed chemicals that may be found in oral healthcare facilities include formaldehyde (U122[T]) and phenol (U188[T]).^1,2,9