Wis. Admin. Code Department of Natural Resources NR 264.21

Current through August 26, 2024

Section NR 264.21 - Specialized definitions

The following definitions apply to the terms used in this subchapter:

(1) "Electronic crystals" means crystals or crystalline materials, such as crystals comprised of quartz, ceramic silicon, gallium arsenide, and indium arsenide, which, because of their unique structural and electrical properties, are used in electronic devices.

(2) "TTO" means the sum of the concentrations of each of the following toxic organic compounds which is found in the discharge at a concentration greater than 10 micrograms per liter:

1, 2, 4 trichlorobenzene	2, 4 dichlorophenol
chloroform	4 nitrophenol
1, 2 dichlorobenzene	pentachlorophenol
1, 3 dichlorobenzene	di-n-butyl phthalate
1, 4 dichlorobenzene	anthracene
ethylbenzene	1, 2 diphenylhydrazine
1, 1, 1 trichloroethane	isophorone
methylene chloride	butyl benzyl phthalate
naphthalene	1, 1 dichloroethylene
2 nitrophenol	2, 4, 6 trichlorophenol
bis (2-ethylhexyl) phthalate	carbon tetrachloride
tetrachloroethylene	1, 2 dichloroethane
toluene	1,1,2 trichloroethane
trichloroethylene	dichlorobromomethane
2 chlorophenol

Wis. Admin. Code Department of Natural Resources NR 264.21

Cr. Register, May, 1990, No. 413, eff. 6-1-90.