40 CFR § 437.25
Pretreatment standards for existing sources (PSES)
June 9, 2020
Except as provided in 40 CFR 403.7, 403.13 or §437.20(b), and no later than December 22, 2003, any existing source subject to this subpart must achieve the following pretreatment standards:
Pretreatment Standards (PSES)
Open Table
| Regulated parameter |
Maximum daily1 | Maximum monthly avg.1 |
|---|---|---|
| Metal Parameters | ||
| Chromium | 0.947 | 0.487 |
| Cobalt | 56.4 | 18.8 |
| Copper | 0.405 | 0.301 |
| Lead | 0.222 | 0.172 |
| Tin | 0.249 | 0.146 |
| Zinc | 6.95 | 4.46 |
| Organic Parameters | ||
| Bis(2-ethylhexyl) phthalate | 0.267 | 0.158 |
| Carbazole | 0.392 | 0.233 |
| n-Decane | 5.79 | 3.31 |
| Fluoranthene | 0.787 | 0.393 |
| n-Octadecane | 1.22 | 0.925 |
1mg/L (ppm).
[65 FR 81300, Dec. 22, 2000, as amended at 68 FR 71023, Dec. 22, 2003]
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