40 CFR §438.15
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
New point sources subject to this subpart must achieve the new source performance standards (NSPS) for TSS, O&G (as HEM), and pH, which are the same as the corresponding limitation specified at § 438.12. The performance standards apply with respect to each new point source that commences discharge after June 12, 2003.