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Title 40: Protection of Environment
CHAPTER I: ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
SUBCHAPTER N: EFFLUENT GUIDELINES AND STANDARDS
PART 467: ALUMINUM FORMING POINT SOURCE CATEGORY
Subpart D: Forging Subcategory
467.44 - New source performance standards.
Any new source subject to this subpart must achieve the following performance standards. The discharge of wastewater pollutants from the core shall not exceed the values set forth below:
Subpart D
Core
| Pollutant or pollutant property | NSPS | Maximum for any 1 day | Maximum for monthly average |
| mg/off-kg (lb/million off-lbs) of aluminum forged | ||
| Chromium | 0.019 | 0.008 |
| Cyanide | 0.010 | 0.004 |
| Zinc | 0.051 | 0.021 |
| Aluminum | 0.305 | 0.135 |
| Oil and grease | 0.50 | 0.50 |
| Suspended solids | 0.75 | 0.60 |
| pH | (1) | (1) |
Subpart D
Forging Scrubber Liquor
| Pollutant or pollutant property | NSPS | Maximum for any 1 day | Maximum for monthly average |
| mg/off-kg (lb/million off-lbs) of aluminum forged | ||
| Chromium | 0.035 | 0.014 |
| Cyanide | 0.019 | 0.008 |
| Zinc | 0.096 | 0.04 |
| Aluminum | 0.576 | 0.256 |
| Oil and grease | 0.943 | 0.95 |
| Suspended solids | 1.42 | 1.13 |
| pH | (1) | (1) |
Subpart D
Solution Heat Treatment Contact Cooling Water
| Pollutant or pollutant property | NSPS | Maximum for any 1 day | Maximum for monthly average |
| mg/off-kg (lb/million off-lbs) of aluminum quenched | ||
| Chromium | 0.76 | 0.31 |
| Cyanide | 0.41 | 0.163 |
| Zinc | 2.08 | 0.86 |
| Aluminum | 12.45 | 5.52 |
| Oil and grease | 20.37 | 20.37 |
| Suspended solids | 30.56 | 24.45 |
| pH | (1) | (1) |
Subpart D
Cleaning or Etching Bath
| Pollutant or pollutant property | NSPS | Maximum for any 1 day | Maximum for monthly average |
| mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | ||
| Chromium | 0.066 | 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 | (1) | (1) |
Subpart D
Cleaning or Etching Rinse
| Pollutant or pollutant property | NSPS | Maximum for any 1 day | Maximum for monthly average |
| 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 | 8.5 | 3.77 |
| Oil and grease | 13.91 | 13.91 |
| Suspended solids | 20.87 | 16.69 |
| pH | (1) | (1) |
Subpart D
Cleaning or Etching Scrubber Liquor
| Pollutant or pollutant property | NSPS | Maximum for any 1 day | Maximum for monthly average |
| mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | ||
| Chromium | 0.72 | 0.29 |
| Cyanide | 0.39 | 0.155 |
| Zinc | 1.97 | 0.812 |
| Aluminum | 11.81 | 5.24 |
| Oil and grease | 19.33 | 19.33 |
| Suspended solids | 29.00 | 23.20 |
| pH | (1) | (1) |
[48 FR 49149, Oct. 24, 1983; 49 FR 11633 and 11635, Mar. 27, 1984]
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