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40 CFR 421.336

§ 421.336 Pretreatment standards for new sources.

United States · 40 CFR — Protection of Environment · Status: effective

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40 CFR 421.336, § 421.336 Pretreatment standards for new sources, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/189162
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Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in primary zirconium and hafnium process wastewater introduced into a POTW shall not exceed the following values: (a) Sand drying wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (b) Sand chlorination off-gas wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (c) Sand chlorination area vent wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (d) SiCl4 purification wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (e) Feed makeup wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (f) Iron extraction (MIBK) steam stripper bottoms. PSNS for the Primary Zirconium and Hafnium Subcategory (g) Zirconium filtrate. PSNS for the Primary Zirconium and Hafnium Subcategory (h) Hafnium filtrate. PSNS for the Primary Zirconium and Hafnium Subcategory (i) Calcining caustic wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (j) Pure chlorination wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (k) Reduction area-vent wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (l) Magnesium recovery off-gas wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (m) Magnesium recovery area-vent wet air pollution control. PSNS Limitations for the Primary Zirconium and Hafnium Subcategory (n) Zirconium chip crushing wet air pollution control. PSNS for the Primary Zirconium and Hafnium Subcategory (o) Acid leachate from zirconium metal production. PSNS for the Primary Zirconium and Hafnium Subcategory (p) Acid leachate from zirconium alloy production. PSNS for the Primary Zirconium and Hafnium Subcategory (q) Leaching rinse water from zirconium metal production. PSNS Limitations for the Primary Zirconium and Hafnium Subcategory (r) Leaching rinse water from zirconium alloy production. PSNS for the Primary Zirconium and Hafnium 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.