40 CFR § 415.534
Pretreatment standards for existing sources (PSES)
June 9, 2020
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 (PSES):
Subpart BA—Silver Nitrate
Open Table
| Pollution or pollutant property | PSES limitations | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Milligram per liter (mg/l) | ||
| Silver | 1.0 | 0.5 |
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