40 CFR § 415.64
Pretreatment standards for existing sources (PSES)
June 9, 2020
(a) [Reserved]
(b) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart and using the diaphragm cell process, 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 (PSES):
Subpart F—Chlor-Alkali-Diaphragm Cells
Open Table
| Pollutant or pollutant property | PSES effluent limitations | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Milligrams per liter (mq/1) | ||
| Copper (T) | 2.1 | 0.80 |
| Lead (T) | 2.9 | 1.1 |
| Nickel (T) | 1.6 | 0.64 |
In cases when POTWs find it necessary to impose mass limitations, the following equivalent mass limitations are provided as an alternate: The limitations for Copper (T), Lead(T) and Nickel (T) are the same as specified in §415.62(b).
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