40 C.F.R. § 417.50
Applicability; description of the glycerine distillation subcategory.
Cite as 40 C.F.R. § 417.50 (2026)
The provisions of this subpart are applicable to discharges resulting from the production of finished glycerine of various grades (e.g., USP) through concentration from crude glycerine by means of distillation.