U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 415Subpart E - Subpart E—Calcium Oxide Production Subcategory
§ 415.50 - Applicability; description of the calcium oxide production subcategory.
§ 415.51 - Specialized definitions. [Reserved]
§ 415.52 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
§ 415.53 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
§ 415.54 - [Reserved]
§ 415.55 - New source performance standards (NSPS).
§ 415.56 - Pretreatment standards for new sources (PSNS).
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