40 CFR § 467.34 - New source performance standards.
---
identifier: "/us/cfr/t40/s467.34"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 467.34 - New source performance standards."
title_number: 40
title_name: "Protection of Environment"
section_number: "467.34"
section_name: "New source performance standards."
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"
---
# 467.34 New source performance standards.
Any new source subject to this subpart must achieve the following performance standards.
(a) There shall be no discharge allowance for wastewater pollutants from the degassing operation.
(b) The discharge of wastewater pollutants from the core and ancillary operations except those listed in paragraph (a) shall not exceed the values set forth below:
****Subpart C
****Core
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum extruded | |
| Chromium | 0.13 | 0.051 |
| Cyanide | 0.068 | 0.027 |
| Zinc | 0.35 | 0.14 |
| Aluminum | 2.07 | 0.92 |
| Oil and grease | 3.39 | 3.39 |
| Suspended solids | 5.10 | 4.07 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
****Subpart C
****Extrusion Press Leakage
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum extruded | |
| Chromium | 0.11 | 0.045 |
| Cyanide | 0.060 | 0.024 |
| Zinc | 0.31 | 0.126 |
| Aluminum | 1.82 | 0.81 |
| Oil and grease | 2.98 | 2.98 |
| Suspended solids | 4.47 | 3.58 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
****Subpart C
****Direct Chill Casting Contact Cooling Water
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cast by semicontinuous methods | |
| Chromium | 0.49 | 0.20 |
| Cyanide | 0.27 | 0.11 |
| Zinc | 1.36 | 0.56 |
| Aluminum | 8.12 | 3.60 |
| Oil and grease | 13.29 | 13.29 |
| Suspended solids | 19.94 | 15.95 |
| pH | () | () |
| The pH shall be maintained within the range of 7.0 to 10.0 at all times except for those situations when this waste stream is discharged separately and without commingling with any other wastewater in which case the pH shall be within the range of 6.0 to 10.0 at all times. | | |
****Subpart C
****Press Heat Treatment Contact Cooling Water
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum quenched | |
| Chromium | 0.76 | 0.31 |
| Cyanide | 0.41 | 0.17 |
| Zinc | 2.08 | 0.86 |
| Aluminum | 12.45 | 5.52 |
| Oil and grease | 20.37 | 20.37 |
| Suspended solids | 30.56 | 24.45 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
| | | |
****Subpart C
****Solution Heat Treatment Contact Cooling Water
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum quenched | |
| Chromium | 0.76 | 0.31 |
| Cyanide | 0.41 | 0.17 |
| Zinc | 2.08 | 0.86 |
| Aluminum | 12.45 | 5.52 |
| Oil and grease | 20.37 | 20.37 |
| Suspended solids | 30.56 | 24.45 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
| | | |
****Subpart C
****Cleaning or Etching Bath
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | |
| Chromium | 0.067 | 0.027 |
| Cyanide | 0.036 | 0.015 |
| Zinc | 0.183 | 0.075 |
| Aluminum | 1.094 | 0.485 |
| Oil and grease | 1.79 | 1.79 |
| Suspended solids | 2.69 | 2.15 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
| | | |
****Subpart C
****Cleaning or Etching Rinse
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | |
| Chromium | 0.52 | 0.21 |
| Cyanide | 0.28 | 0.11 |
| Zinc | 1.42 | 0.59 |
| Aluminum | 8.50 | 3.77 |
| Oil and grease | 13.91 | 13.91 |
| Suspended solids | 20.87 | 16.70 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
| | | |
****Subpart C
****Cleaning or Etching Scrubber Liquor
| | | |
| --- | --- | --- |
| | mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | |
| Chromium | 0.72 | 0.29 |
| Cyanide | 0.39 | 0.16 |
| Zinc | 1.97 | 0.81 |
| Aluminum | 11.81 | 5.24 |
| Oil and grease | 19.33 | 19.33 |
| Suspended solids | 29.00 | 23.20 |
| pH | () | () |
| Within the range of 7.0 to 10.0 at all times. | | |
| | | |
[48 FR 49149, Oct. 24, 1983; 49 FR 11633, 11634, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]