Federal Toxicity Characteristics

A waste is considered toxic per Federal toxicity characteristics¹ when:

• it is analyzed by the Toxic Characteristic Leaching Procedure (TCLP) method
• contains any of the chemicals listed below in concentrations that equal or exceed the regulatory threshold (RT)

EPA HW number	Toxic Substance	Regulatory Threshold Mg/L
D004	Arsenic	5.0
D005	Barium	100.0
D018	Benzene	0.5
D006	Cadmium	1.0
D019	Carbon Tetrachloride	0.5
D020	Chlordane	0.03
D021	Chlorobenzene	100.0
D022	Chloroform	6.0
D007	Chromium	5.0
D023	o-Cresol	200.0*
D025	m-Cresol	200.0*
D025	p-Cresol	200.0*
D026	Cresol	200.0*
D016	2,4-D	10.0
D027	1,4-Dichlorobenzene	7.5
D028	1,2-Dichloroethane	0.5
D029	1,1-Dichloroethylene	0.7
D030	2,4-Dinitrotoluene	0.13
D012	Endrin	0.02
D031	Heptachlor(and its epoxide)	0.008
D032	Hexachlorobenzene	0.13
D033	Hexachlorobutadiene	0.5
D034	Hexachloroethane	3.0
D008	Lead	5.0
D013	Lindane	0.4
D009	Mercury	0.2
D014	Methoxychlor	10.0
D035	Methyl ethyl ketone	200.0
D036	Nitrobenzene	2.0
D037	Pentachlorophenol	100.0
D038	Pyridine	5.0**
D010	Selinium	1.0
D011	Silver	5.0
D039	Tetrachlorethylene	0.7
D015	Toxaphene	0.5
D040	Trichloroethylene	0.5
D041	2,4,5-Trichlorophenol	400.0
D042	2,4,6-Trichlorophenol	2.0
D017	2,4,5-TP(Silver)	1.0
D043	Vinyl chloride	0.2

^*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.
^**Quantitation limit is greater than the calculated regulatory level. The quantitation limit therefore becomes the regulatory level.

References

¹ 22 CCR Section 66261.24(a)(1)