TITLE 40 - PROTECTION OF ENVIRONMENT

CHAPTER I - ENVIRONMENTAL PROTECTION AGENCY

SUBCHAPTER I - SOLID WASTES

PART 261 - IDENTIFICATION AND LISTING OF HAZARDOUS WASTE

subpart c - CHARACTERISTICS OF HAZARDOUS WASTE

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 SW846, 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]