§261.24 Toxicity characteristic.

(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 I which corresponds to the toxic contaminant causing it to be hazardous.

     Table 1_Maximum Concentration of Contaminants for the Toxicity
                             Characteristic
------------------------------------------------------------------------
                                                              Regulatory
   EPA HW No. \1\            Contaminant         CAS No. \2\  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
D007                 Chromium..................    7440-47-3        5.0
D023                 o-Cresol..................      95-48-7  \4\ 200.0
D024                 m-Cresol..................     108-39-4  \4\ 200.0
D025                 p-Cresol..................     106-44-5  \4\ 200.0
D026                 Cresol....................  ...........  \4\ 200.0
D016                 2,4-D.....................      94-75-7       10.0
D027                 1,4-Dichlorobenzene.......     106-46-7        7.5
D028                 1,2-Dichloroethane........     107-06-2        0.5
D029                 1,1-Dichloroethylene......      75-35-4        0.7
D030                 2,4-Dinitrotoluene........     121-14-2   \3\ 0.13
D012                 Endrin....................      72-20-8       0.02
D031                 Heptachlor (and its             76-44-8      0.008
                      epoxide).
D032                 Hexachlorobenzene.........     118-74-1   \3\ 0.13
D033                 Hexachlorobutadiene.......      87-68-3        0.5
D034                 Hexachloroethane..........      67-72-1        3.0
D008                 Lead......................    7439-92-1        5.0
D013                 Lindane...................      58-89-9        0.4
D009                 Mercury...................    7439-97-6        0.2
D014                 Methoxychlor..............      72-43-5       10.0
D035                  Methyl ethyl ketone......      78-93-3      200.0
D036                 Nitrobenzene..............      98-95-3        2.0
D037                 Pentrachlorophenol........      87-86-5      100.0
D038                 Pyridine..................     110-86-1    \3\ 5.0
D010                 Selenium..................    7782-49-2        1.0
D011                 Silver....................    7440-22-4        5.0
D039                 Tetrachloroethylene.......     127-18-4        0.7
D015                 Toxaphene.................    8001-35-2        0.5
D040                 Trichloroethylene.........      79-01-6        0.5
D041                 2,4,5-Trichlorophenol.....      95-95-4      400.0
D042                 2,4,6-Trichlorophenol.....      88-06-2        2.0
D017                 2,4,5-TP (Silvex).........      93-72-1        1.0
D043                 Vinyl chloride............      75-01-4        0.2
------------------------------------------------------------------------
\1\ Hazardous waste number.
\2\ Chemical abstracts service number.
\3\ Quantitation limit is greater than the calculated regulatory level.
  The quantitation limit therefore becomes the regulatory level.
\4\ If o-, m-, and p-Cresol concentrations cannot be differentiated, the
  total cresol (D026) concentration is used. The regulatory level of
  total cresol is 200 mg/l.

[55 FR 11862, Mar. 29, 1990, as amended at 55 FR 22684, June 1, 1990; 55 FR 26987, June 29, 1990; 58 FR 46049, Aug. 31, 1993; 67 FR 11254, Mar. 13, 2002]