U.S. Code of Federal Regulations
Regulations most recently checked for updates: Sep 24, 2023
(a) This subpart applies to process wastewater directly discharged from facilities specified at § 438.1.
(b) This subpart applies to process wastewater discharges from oily operations (as defined at § 438.2(f) and appendix B of this part).
(c) This subpart does not apply to process wastewater discharges from metal-bearing operations (as defined at § 438.2(d) and appendix C of this part).
