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40 CFR §469.12

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The definitions in 40 CFR part 401 and the chemical analysis methods in 40 CFR part 136 apply to this subpart.
  1. (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:
  2. (b)The term “semiconductors” means solid state electrical devices which perform functions such as information processing and display, power handling, and interconversion between light energy and electrical energy.
  3. (c)The term “manufacture of semiconductors” means those processes, beginning with the use of crystal wafers, which lead to or are associated with the manufacture of semiconductor devices.