GroundRules
40 CFR 425.15: Pretreatment standards for existing sources (PSES).
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
- PART 425—LEATHER TANNING AND FINISHING POINT SOURCE CATEGORY
- Subpart A—Hair Pulp, Chrome Tan, Retan-Wet Finish Subcategory
(a) Except as provided in § 425.04 and 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 achieve the following pretreatment standards:
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthly average
Milligrams per liter (mg/l)
Sulfide 24
Total chromium 12 8
pH (1) (1)
1 Not less than 7.0.
(b) Any existing source subject to this subpart which processes less than 275 hides/day shall comply with § 425.15(a), except that the total chromium limitations contained in § 425.15(a) do not apply.
Collected 2026-08-27T02:26:04Z. Source file · JSON