§ 464.45 Pretreatment standards for existing sources.
Current through Aug 22, 2025 · Read all of Part 464
Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources.
(a) Casting Quench Operations.
PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| kg/1,000 kkg (pounds per million pounds) of metal poured | ||
| Copper (T) | 0.0344 | 0.0187 |
| Lead (T) | 0.0237 | 0.0116 |
| Zinc (T) | 0.0339 | 0.0129 |
| TTO | 0.093 | 0.0304 |
| Oil and grease (for alternate monitoring) | 1.34 | 0.446 |
(b) Die Casting Operations.
PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| kg/1,000 kkg (pounds per million pounds of metal poured) | ||
| Copper (T) | 0.0066 | 0.0036 |
| Lead (T) | 0.0046 | 0.0022 |
| Zinc (T) | 0.0066 | 0.0025 |
| Total phenols | 0.0074 | 0.0026 |
| TTO | 0.0196 | 0.0064 |
| Oil and grease for alternate monitoring) | 0.259 | 0.0864 |
(c) Melting Furnace Scrubber Operations.
PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed | ||
| Copper (T) | 1.56 | 0.852 |
| Lead (T) | 1.07 | 0.527 |
| Zinc (T) | 1.54 | 0.588 |
| Total phenols | 1.74 | 0.608 |
| TTO | 3.95 | 1.29 |
| Oil and grease for alternate monitoring) | 60.8 | 20.3 |
(d) Mold Cooling Operations.
PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| kg/1,000 kkg (pounds per million pounds) of metal poured | ||
| Copper (T) | 0.304 | 0.166 |
| Lead (T) | 0.209 | 0.103 |
| Zinc (T) | 0.3 | 0.114 |
| TTO | 0.821 | 0.268 |
| Oil and grease for alternate monitoring) | 11.8 | 3.94 |