(a) 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.
Subpart A - PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
|---|---|---|
| Milligrams per liter (mg/l) | ||
| Chromium | 0.42 | 0.17 |
| Lead | 0.15 | 0.13 |
| Nickel | 1.41 | 1.00 |
| Zinc | 1.33 | 0.56 |
(b) In cases where POTW find it necessary to impose mass effluent pretreatment standards the following equivalent mass standards are provided:
Subpart A - PSES
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average | ||
|---|---|---|---|---|
| Metal preparation | Coating operation | Metal preparation | Coating operation | |
| Metric units - mg/m2 of area processed or coated | ||||
| Chromium | 16.82 | 0.53 | 6.81 | 0.22 |
| Lead | 6.01 | 0.19 | 5.21 | 0.16 |
| Nickel | 56.5 | 1.78 | 40.1 | 1.26 |
| Zinc | 53.3 | 1.68 | 22.5 | 0.71 |
| English units - lbs/1 million ft2 of area processed or coated | ||||
| Chromium | 3.45 | 0.11 | 1.4 | 0.05 |
| Lead | 1.23 | 0.04 | 1.07 | 0.03 |
| Nickel | 11.6 | 0.37 | 8.20 | 0.26 |
| Zinc | 10.9 | 0.35 | 4.6 | 0.15 |
[47 FR 53184, Nov. 24, 1982, as amended at 50 FR 36543, Sept. 6, 1985]