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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter N - Effluent Guidelines and Standards |
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Part 425 - Leather Tanning and Finishing Point Source Category |
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Subpart C - Hair Save or Pulp, Non-Chrome Tan, Retan-Wet Finish Subcategory |
§ 425.35 - Pretreatment standards for existing sources (PSES).
Latest version.
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§ 425.35 Pretreatment standards for existing sources (PSES).
(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 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]