40 C.F.R. § 439.4

Current through October 31, 2024
Section 439.4 - General limitation or standard for pH

The pH must remain within the range 6.0 to 9.0 in any discharge subject to BPT, BCT or NSPS limitations or standards in this part.

40 C.F.R. §439.4

68 FR 12271 , Mar. 13, 2003