Any new source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, in addition to the limitations set forth in paragraphs (a) and (b) of this section.
(a) The following pretreatment standard establishes the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged to a publicly owned treatment works by a new point source subject to the provisions of this subpart:
| Pollutant or pollutant property | Pretreatment standard |
|---|---|
| pH | No limitation. |
| BOD5 | Do. |
| TSS | Do. |
| Oil and grease | 100 mg/l daily maximum. |
(b) The following pretreatment standard establishes the quantity or quality of pollutant properties controlled by this section and attributable to plants employing the chromic acid form-cleaning operation, which may be discharged to a publicly owned treatment works by a new point source subject to the provisions of this subpart, in addition to the limitations set forth by § 428.106(a):
| Pollutant or pollutant property | Pretreatment standards | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days shall not exceed - | |
| Metric units (kg/kkg of raw material) | ||
| Chromium | 0.0086 | 0.0036 |
| English units (lb/1,000 lb of raw material) | ||
| Chromium | 0.0086 | 0.0036 |
[40 FR 2344, Jan. 10, 1975, as amended at 60 FR 33964, June 29, 1995]