CFR > Title 40 > Chapter I > Subchapter N > Part 434 > Subpart F CFR > Title 40 > Chapter I > Subchapter N > Part 434 > Subpart F – Miscellaneous Provisions Current as of: 2024 | Check for updates | Other versions § 434.60 Applicability § 434.61 Commingling of waste streams § 434.62 Alternate effluent limitation for pH § 434.63 Effluent limitations for precipitation events § 434.64 Procedure and method detection limit for measurement of settleable solids § 434.65 Modification of NPDES permits for new sources