Regulations last checked for updates: May 19, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
§ 421.186 - Pretreatment standards for new sources.

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary and secondary germanium and gallium process wastewater introduced into a POTW shall not exceed the following values:

(a) Still Liquor.

PSNS for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds of germanium chlorinated
Arsenic131.7058.59
Lead26.4612.60
Zinc91.9838.43
Fluoride2,205.001,254.00

(b) Chlorinator Wet Air Pollution Control.

PSNS for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds of germanium chlorinated
Arsenic27.53012.250
Lead5.5312.634
Zinc19.2308.034
Fluoride461.000262.100

(c) Germanium Hydrolysis Filtrate.

PSNS for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds of germanium hydrolyzed
Arsenic39.44017.550
Lead7.9253.774
Zinc27.55011.510
Fluoride660.500375.500

(d) Acid Wash and Rinse Water.

PSNS for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds of germanium washed
Arsenic325.50144.80
Lead65.4031.14
Zinc227.4094.99
Fluoride5,450.003,099.00

(e) Gallium Hydrolysis Filtrate.

PSNS for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of gallium hydrolyzed
Arsenic70.45031.350
Lead14.1606.742
Zinc49.22020.560
Fluoride1,180.000670.800

(f) Solvent Extraction Raffinate.

PSNS for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of gallium produced by solvent extraction
Arsenic39.33017.500
Lead7.9043.764
Zinc27.48011.480
Fluoride658.700374.500
authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 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) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311,1314,c,e,and, 1316 (b) andc, 1317 (b) andc,1318; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.
cite as: 40 CFR 421.186