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§ 421.75 Pretreatment standards for existing sources.
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 mut comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary lead process wastewater introduced into a POTW shall not exceed the following values:
(a) Subpart G—Sinter Plant Materials Handling Wet Air Pollution Control.
PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| mg/kkg (pounds per billion pounds) of sinter production | ||
| Lead | 100.800 | 46.800 |
| Zinc | 367.200 | 151.200 |
(b) Subpart G—Blast Furnace Wet Air Pollution Control.