Regulations last checked for updates: May 20, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
§ 469.24 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

Except as provided in 40 CFR 125.30 through 32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

Subpart B—Electronic Crystals BPT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Average of daily values for 30 consecutive days
Milligrams per liter (mg/l)
TTO 11.37( 3)
Arsenic (T) 22.090.83
Fluoride (T)32.017.4
TSS61.023.0
pH( 4)( 4)

1 Total toxic organics.

2 The arsenic (T) limitation only applies to manufacturers of gallium or indium arsenide crystals.

3 Not applicable.

4 Within the range of 6.0 to 9.0.

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; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217, unless otherwise noted
source: 48 FR 15394, Apr. 8, 1983, unless otherwise noted.
cite as: 40 CFR 469.24