PART 422—PHOSPHATE MANUFACTURING POINT SOURCE CATEGORY
- SUBPART A—Phosphorus Production Subcategory (§422.10 to §422.10)
- SUBPART B—Phosphorus Consuming Subcategory (§422.20 to §422.20)
- SUBPART C—Phosphate Subcategory (§422.30 to §422.30)
- SUBPART D—Defluorinated Phosphate Rock Subcategory (§422.40 to §422.47)
- SUBPART E—Defluorinated Phosphoric Acid Subcategory (§422.50 to §422.57)
- SUBPART F—Sodium Phosphates Subcategory (§422.60 to §422.67)