§469.22. Specialized definitions.
40 C.F.R. § 469.22
The definitions in 40 CFR part 401 and the chemical analysis methods in 40 CFR part 136 apply to this subpart. In addition,
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:
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 idium arsenide.
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.
Notes, amendments, and revision history
Amendments
[48 FR 15394, Apr. 8, 1983, as amended at 48 FR 45250, Oct. 4, 1983]
Authority
Authority: Secs. 301, 304, 306, 307, 308, and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977, 33 U.S.C. 1311, 1314, 1316, 1317, 1318, and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217, unless otherwise noted.
Source
Source: 48 FR 15394, Apr. 8, 1983, unless otherwise noted.
Amendments
[48 FR 15394, Apr. 8, 1983, as amended at 48 FR 45250, Oct. 4, 1983]