Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 264 - Electrical and electronic components
Subchapter II - Electronic Crystals Subcategory
Section NR 264.21 - Specialized definitions

Universal Citation: WI Admin Code ยง NR 264.21

Current through August 26, 2024

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

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