[Code of Federal Regulations] [Title 40, Volume 23] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR261.24] [Page 59-60] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 261--IDENTIFICATION AND LISTING OF HAZARDOUS WASTE--Table of Contents Subpart C--Characteristics of Hazardous Waste Sec. 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 Sec. 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 [[Page 60]] 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]