§ 439.26 Pretreatment standards for existing sources (PSES).
Current through Aug 22, 2025 · Read all of Part 439
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart must achieve the following standards by September 21, 2001:
Pretreatment Standards (PSES)
| Regulated parameter | Maximum daily 1 | Maximum monthly average 1 |
|---|---|---|
| Acetone | 20.7 | 8.2 |
| n-Amyl acetate | 20.7 | 8.2 |
| Ethyl acetate | 20.7 | 8.2 |
| Isopropyl acetate | 20.7 | 8.2 |
| Methylene chloride | 3.0 | 0.7 |
1 mg/L (ppm).
[68 FR 12273, Mar. 13, 2003]