40 CFR 418.35: Standards of performance for new sources.

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:

(a) The following limitations constitute the maximum permissible discharge for urea manufacturing operations in which urea is produced as a solution product:

Effluent characteristics Effluent limitations (mg/l)

Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed—

Ammonia (as N) 0.53 0.27

Organic nitrogen (as N) .45 .24

Note: Metric units: Kilogram/1,000 kg of product; English units: Pound/1,000 lb of product.

(b) The following limitations constitute the maximum permissible discharge for urea manufacturing operations in which urea is prilled or granulated:

Effluent characteristics Effluent limitations (mg/l)

Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed—

Ammonia (as N) 0.53 0.27

Organic nitrogen (as N) .86 .46

Note: Metric units: Kilogram/1,000 kg of product; English units: Pound/1,000 lb of product.