40 CFR §408.75
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart: No pollutants may be discharged which exceed 1.27 cm (0.5 inch) in any dimension.