Statutes, codes, and regulations
Maryland Administrative code
Title 26 - DEPARTMENT OF ENVIRONMENTPart 3 - SUBTITLES 13-18Subtitle 13 - DISPOSAL OF CONTROLLED HAZARDOUS SUBSTANCES
Chapter 26.13.02 - Identification and Listing of Hazardous Waste
Section 26.13.02.14 - Toxicity Characteristic

Md. Code Regs. 26.13.02.14

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Current through Register Vol. 51, No. 25, December 13, 2024
Section 26.13.02.14 - 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, which is incorporated by reference in COMAR 26.13.01.05 o A(4), 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. When the waste contains less than 0.5 percent filterable solids, the waste itself, after filtering using the methodology outlined in Test 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 the following Table 1, which corresponds to the toxic contaminant causing it to be hazardous:

EPAHW No.1ContaminantCAS No.2Regulatory Level (milligrams per liter)
D004Arsenic7440-38-25.0
D005Barium7440-39-3100.0
D018Benzene71-43-20.5
D006Cadmium7440-43-91.0
D019Carbon tetrachloride56-23-50.5
D020Chlordane57-74-90.03
D021Chlorobenzene108-90-7100.0
D022Chloroform67-66-36.0
D007Chromium7440-47-35.0
D023o-Cresol95-48-7200.04
D024m-Cresol108-39-4200.04
D025p-Cresol106-44-5200.04
D026Cresol200.04
D0162,4-D94-75-710.0
D0271,4-Dichlorobenzene106-46-77.5
D0281,2-Dichloroethane107-06-20.5
D0291,1-Dichloroethylene75-35-40.7
D0302,4-Dinitrotoluene121-14-20.133
D012Endrin72-20-80.02
D031Heptachlor (and its epoxide)76-44-80.008
D032Hexachlorobenzene118-74-10.133
D033Hexachlorobutadiene87-68-30.5
D034Hexachloroethane67-72-13.0
D008Lead7439-92-15.0
D013Lindane58-89-90.4
D009Mercury7439-97-60.2
D014Methoxychlor72-43-510.0
D035Methylethylketone78-93-3200.0
D036Nitrobenzene98-95-32.0
D037Pentachlorophenol87-86-5100.0
D038Pyridine110-86-15.03
D010Selenium7782-49-21.0
D011Silver7440-22-45.0
D039Tetrachloroethylene127-18-40.7
D015Toxaphene8001-35-20.5
D040Trichloroethylene79-01-60.5
D0412,4,5-Trichlorophenol95-95-4400.0
D0422,4,6-Trichlorophenol88-06-22.0
D0172,4,5-TP (Silvex)93-72-11.0
D043Vinyl chloride75-01-40.2

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 milligrams per liter.

C. Clarification Concerning Manufactured Gas Plant Waste. Manufactured gas plant waste that would exhibit the characteristic of toxicity in the absence of the exception provided in §A of this regulation may not be managed in a landfill that is permitted, licensed, or registered to manage municipal solid waste.

Md. Code Regs. 26.13.02.14

Regulations .14 adopted as an emergency provision effective November 18, 1980 (7:25 Md. R. S-1); adopted permanently effective April 3, 1981 (8:7 Md. R. 642)
Regulation .14E amended effective April 18, 1988 (15:8 Md. R. 1009)
Regulation .14 repealed and new Regulation .14 adopted effective December 23, 1991 (18:25 Md. R. 2759)
Regulation .14 amended effective May 1, 2008 (35:8 Md. R. 809)