Federal Register Notice
• Military Munitions Rule
62 FR 6622, February 12, 1997
General Resources for the Reactivity Characteristic
• Background document for the Reactivity characteristic
Toxicity
The regulations for the hazardous characteristic of toxicity can be found at 40 CFR 261.24.
Regulations for Toxicity
§261.24
(a) A solid waste (except manufactured gas plant waste) exhibits the characteristic of toxicity if,
using the Toxicity Characteristic Leaching Procedure, test Method 1311 in "Test Methods for
Evaluating Solid Waste, Physical/Chemical Methods," EPA Publication SW–846, as
incorporated by reference in §260.11 of this chapter, the extract from a representative sample of
the waste contains any of the contaminants listed in table 1 at the concentration equal to or
greater than the respective value given in that table. Where the waste contains less than 0.5
percent filterable solids, the waste itself, after filtering using the methodology outlined in
Method 1311, is considered to be the extract for the purpose of this section.
(b) A solid waste that exhibits the characteristic of toxicity has the EPA Hazardous Waste
Number specified in Table 1 which corresponds to the toxic contaminant causing it to be
hazardous.
Table 1 —Maximum Concentration of Contaminants for the Toxicity Characteristic
EPA HW No.
1
Contaminant CAS No.
2
Regulatory Level (mg/L)
D004 Arsenic 7440–38–2 5.0
D005 Barium 7440–39–3 100.0
D018 Benzene 71–43–2 0.5
D006 Cadmium 7440–43–9 1.0
D019 Carbon tetrachloride 56–23–5 0.5
D020 Chlordane 57–74–9 0.03
D021 Chlorobenzene 108–90–7 100.0
D022 Chloroform 67–66–3 6.0
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