40 C.F.R. § 418.25
Standards of performance for new sources.
Cite as 40 C.F.R. § 418.25 (2026)
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: Effluent characteristic Effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed— Metric units (kilograms per 1,000 kg of product) Ammonia (as N) 0.11 0.055 pH ( 1 ) ( 1 ) English units (pounds per 1,000 lb of product) Ammonia (as N) 0.11 0.055 pH ( 1 ) ( 1 ) 1 Within the range 6.0 to 9.0.