§ 464.14 — New Source Performance Standards

Any new source subject to this subpart must achieve the following new source performance standards (NSPS), except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/62.3 million Sm

3 or lb/billion SCF of air scrubbed) effluent standards for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass standards and maximum day and maximum for monthly average concentration (mg/l) standards shall apply. Concentration standards and annual average mass standards shall only apply to non-continuous dischargers.

(a) Casting Cleaning Operations.

NSPS

(b) Casting Quench Operations.

NSPS

(c) Die Casting Operations.

NSPS

(d) Dust Collection Scrubber Operations.

NSPS

(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.

(f) Investment Casting.

NSPS

(g) Melting Furnace Scrubber Operations.

NSPS

(h) Mold Cooling Operations.

NSPS