The definitions in 40 CFR part 401 and the chemical analysis methods in 40 CFR part 136 apply to this subpart. In addition,
(a) The term “total toxic organics (TTO)” means the sum of the concentrations for each
of the following toxic organic compounds which is found in the discharge at a concentration
greater than ten (10) micrograms per liter:
(b) The term “electronic crystals” means crystals or crystalline material which because
of their unique structural and electronic properties are used in electronic devices. Examples of these crystals are crystals comprised of quartz, ceramic, silicon, gallium
arsenide, and indium arsenide.
(c) The term “manufacture of electronic crystals” means the growing of crystals and/or
the production of crystal wafers for use in the manufacture of electronic devices.
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