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Phosphate Fertilizer Industry: New Source Performance Standards - 40 CFR 60 Subparts T, U, V, W & X

Rule Summary

This action finalizes an 8-year review of the current new source performance standards (NSPS) for five phosphate fertilizer industry source categories- 40 CFR Subparts T, U, V, W, & X. Based on the 8-year review of the current NSPS for these source categories, the EPA determined that no revisions to the numeric emission limits in those rules are warranted.

Subpart T covers Wet-Process Phosphoric Acid (WPPA) plants, which are defined in the standards as any facility manufacturing phosphoric acid by reacting phosphate rock and acid. These standards limit emission of total fluorides from WPPA plants to 10.0g/Mg of equivalent P2O5 feed (0.020 lb/ton).

Subpart U cover Superphosphoric Acid (SPA) plants, which are defined in the standard as a facility that concentrates wet process phosphoric acid to 66 percent or greater P2O5 content by weight for eventual consumption as a fertilizer. These standards limit emissions of total fluorides from SPA plants to 5.0g/megagram (Mg) of equivalent P2O5 feed (0.010 lb/ton).

Subpart V covers Diammonium Phosphate (DAP) plants, which are defined in the standard as any plant manufacturing granular diammonium phosphate by reacting phosphoric acid with ammonia. These standards limit emission of total fluorides from DAP plants to 30 g/megagram (Mg) of equivalent P2O5 feed (0.060 lb/ton).

Subpart W covers Triple Superphosphate (TSP) plants, which are defined in the standards as any facility manufacturing triple superphosphate by reacting phosphate rock with phosphoric acid. These standards limit emissions of total fluorides from TSP plants to 100 g/megagram (Mg) of equivalent P2O5 feed (0.20 lb/ton).

Subpart X cover Granular Triple Superphosphate (GTSP) storage facilities, which are defined in the standards as any facility curing or storing fresh granular triple superphosphate. These standards limit emissions of total fluorides from GTSP storage facilities to 0.25g/hr/megagram (Mg) of equivalent P2O5 stored (5.0 × 10)^4 lb/hr/ton of equivalent P2O5 stored).

Rule History

08/19/2015 – Final Rule

11/07/2014 – Proposed Rule

02/17/1983 - Final rule

11/21/1980 - Review of Standards

08/06/1975 - Final rule

10/22/1974 - Proposed rule

Additional Resources

Review of New Source Performance Standards for Phosphate Fertilizer Industry

Review of New Source Performance Standards for Phosphate Fertilizer Industry - Revised

Related Rules

Phosphate Rock Plants: New Source Performance Standards

Phosphate Fertilizer Production Plants and Phosphoric Acid Manufacturing Plants: National Emission Standards for Hazardous Air Pollutants

Compliance

Applicability Determination Index (ADI).  The ADI is maintained by EPA's Office of Enforcement and Compliance Assurance (OECA) and provides a data base of memoranda dealing with applicability issues.  The database is searchable by Subpart.