Regulations last checked for updates: May 03, 2025

Title 40 - Protection of Environment last revised: Nov 03, 2025
All TitlesTitle 40Chapter IPart 440Subpart B - Subpart B—Aluminum Ore Subcategory
Collapse to view only § 440.20 - Applicability; description of the aluminum ore subcategory.
Table of Contents

§ 440.20 - Applicability; description of the aluminum ore subcategory.

§ 440.21 - [Reserved]

§ 440.22 -

§ 440.23 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

§ 440.24 - New Source performance standards (NSPS).

§ 440.25 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). [Reserved]

§ 440.20 - Applicability; description of the aluminum ore subcategory.

The provisions of this subpart B are applicable to discharges from facilities engaged in the mining of bauxite as an aluminum ore.

§ 440.21 - [Reserved]
§ 440.22 -

Except as provided in subpart L of this part and 40 CFR 125.30 through 125.32, any existing 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). The concentration of pollutants discharged in mine drainage from mines producing bauxite ores shall not exceed:

Effluent characteristic Effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Milligrams per liter
TSS3020
Fe1.0.5
A12.01.0
pH( 1)( 1)

1 Within the range of 6.0 to 9.0.

§ 440.23 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

Except as provided in subpart L of this part and 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). The concentration of pollutants discharged in mine drainage from mines producing bauxite ores shall not exceed:

Effluent characteristic Effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Milligrams per liter
Fe (total)1.00.5
Al2.01.0
§ 440.24 - New Source performance standards (NSPS).

Except as provided in subpart L of this part, any new source subject to this subpart must achieve the following NSPS representing the degree of effluent reduction attainable by the application of the best available demonstrated technology (BADT). The concentration of pollutants discharged in mine drainage from mines producting bauxite ores shall not exceed:

Effluent characteristic Effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Milligrams per liter
Fe (total)1.00.5
Al2.01.0
pH( 1)( 1)
TSS30.020.0

1 Within the range of 6.0 to 9.0.

§ 440.25 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). [Reserved]
authority: Secs. 301, 304(b), (c) and (e), 306, 307, 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,1316,1317,and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4
source: 47 FR 54609, Dec. 3, 1982, unless otherwise noted.
cite as: 40 CFR 440.20
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