40 CFR 421.275
§ 421.275 Pretreatment standards for existing sources.
United States · 40 CFR — Protection of Environment · Status: effective
Cite this
- Citation
- 40 CFR 421.275, § 421.275 Pretreatment standards for existing sources, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/189107
- Permanent ID
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Full text
Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary rare earth metals process wastewater introduced into a POTW must not exceed the following values:
(a) Dryer vent water quench scrubber.
PSES for the Primary Rare Earth Metals Subcategory
(b) Dryer vent caustic wet air pollution control.
PSES for the Primary Rare Earth Metals Subcategory
(c) Electrolytic cell water quench and scrubber.
PSES for the Primary Rare Earth Metals Subcategory
(d) Electrolytic cell caustic wet air pollution control.
PSES for the Primary Rare Earth Metals Subcategory
(e) Sodium hypochlorite filter backwash.
PSES for the Primary Rare Earth Metals Subcategory
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.