40 CFR § 467.33 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
---
identifier: "/us/cfr/t40/s467.33"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 467.33 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable."
title_number: 40
title_name: "Protection of Environment"
section_number: "467.33"
section_name: "Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "467"
part_name: "ALUMINUM FORMING POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
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(b), (c), (e), and (g), 1316(b) and (c), 1317(b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4."
regulatory_source: "48 FR 49149, Oct. 24, 1983, unless otherwise noted."
cfr_part: "467"
---
# 467.33 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
(a) Except as provided in 40 CFR 125.30 through 125.32, 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 available technology economically achievable:
(b) There shall be no discharge allowance for wastewater pollutants from the degassing operation.
(c) The discharge of wastewater pollutants from the core and ancillary operation except those in (b) of this section, shall not exceed the values set forth below:
****Subpart C
****Core
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum extruded | |
| Chromium | 0.15 | 0.061 |
| Cyanide | 0.098 | 0.041 |
| Zinc | 0.49 | 0.21 |
| Aluminum | 2.19 | 1.09 |
****Subpart C
****Extrusion Press Leakage
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum extruded | |
| Chromium | 0.65 | 0.27 |
| Cyanide | 0.43 | 0.18 |
| Zinc | 2.16 | 0.90 |
| Aluminum | 9.51 | 4.73 |
****Subpart C
****Direct Chill Casting Contact Cooling Water
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cast | |
| Chromium | 0.59 | 0.24 |
| Cyanide | 0.39 | 0.16 |
| Zinc | 1.94 | 0.81 |
| Aluminum | 8.55 | 4.26 |
****Subpart C
****Press Heat Treatment Contact Cooling Water
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum quenched | |
| Chromium | 0.90 | 0.37 |
| Cyanide | 0.59 | 0.25 |
| Zinc | 2.98 | 1.25 |
| Aluminum | 13.10 | 6.52 |
****Subpart C
****Solution Heat Treatment Contact Cooling Water
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum quenched | |
| Chromium | 0.90 | 0.37 |
| Cyanide | 0.59 | 0.25 |
| Zinc | 2.98 | 1.25 |
| Aluminum | 13.10 | 6.52 |
****Subpart C
****Cleaning or Etching Bath
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | |
| Chromium | 0.079 | 0.032 |
| Cyanide | 0.052 | 0.022 |
| Zinc | 0.262 | 0.109 |
| Aluminum | 1.15 | 0.58 |
****Subpart C
****Cleaning or Etching Rinse
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | |
| Chromium | 1.7 | 0.7 |
| Cyanide | 1.2 | 0.5 |
| Zinc | 5.7 | 2.4 |
| Aluminum | 25 | 13 |
****Subpart C
****Cleaning or Etching Scrubber Liquor
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | |
| Chromium | 0.85 | 0.35 |
| Cyanide | 0.56 | 0.23 |
| Zinc | 2.82 | 1.18 |
| Aluminum | 12.43 | 6.19 |
[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, 11634, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]