['Water Programs']
['Water Quality', 'Point Sources', 'Toxic Water Pollutants', 'Water Programs', 'Total Maximum Daily Loads']
02/03/2025
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(a) Except as provided in §425.04 and 40 CFR 403.7 and §403.13, any existing sources subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, and achieve the following pretreatment standards:
Pollutant or pollutant property | PSES limitations | |
---|---|---|
Maximum for any 1 day | Maximum for monthly average | |
1 Not less than 7.0. | ||
Milligrams per liter (mg/l) | ||
Sulfide | 24 | -- |
Total Chromium | 12 | 8 |
pH | ( 1) | ( 1) |
(b) Any existing source subject to this subpart which processes less than 350 hides/day shall comply with §425.35(a), except that the Total Chromium limitations contained in §425.35(a) do not apply.
[47 FR 52870, Nov. 23, 1982; 48 FR 36116, June 30, 1983, as amended at 53 FR 9182, Mar. 21, 1988]
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['Water Programs']
['Water Quality', 'Point Sources', 'Toxic Water Pollutants', 'Water Programs', 'Total Maximum Daily Loads']
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