Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and meet the following pretreatment standards for existing sources (PSES):
Subpart H
[PSES Effluent Limitations]
| Pollutant or pollutant property
| Maximum for any 1 day (mg/l)
|
|---|
| Oil and grease | 100
|
| Copper | 5
|
| Chromium | 4
|
| Arsenic | 4 |
In cases where POTWs find it necessary to impose mass limitations, the following equivalent mass limitations are provided as guidance.
Subpart H
[PSES Effluent Limitations; grams per cu m of production]
| Pollutant or pollutant property
| Maximum for any 1 day
|
|---|
| Oil and grease | 20.5
|
| Copper | .62
|
| Chromium | .41
|
| Arsenic | .41 |
source: 46 FR 8285, Jan. 26, 1981, unless otherwise noted.
cite as: 40 CFR 429.95