NSPS for Phosphate Rock Plants (40 CFR Part 60, Subpart NN) (Renewal)

The New Source Performance Standards (NSPS) for Phosphate Rock Plants (40 CFR part 60, subpart NN) apply to the following existing facilities and new facilities at phosphate rock plants with capacities greater than 4 tons per hour: dryers, calciners, grinders, and ground rock handling and storage facilities, except those facilities producing or preparing phosphate rock solely for consumption in elemental phosphorus production. New facilities include those that commenced construction, modification or reconstruction after the date of proposal. This information is being collected to assure compliance with 40 CFR Part 60, Subpart NN. In general, all NSPS standards require initial notifications, performance tests, and periodic reports by the owners/operators of the affected facilities. They are also required to maintain records of the occurrence and duration of any startup, shutdown, or malfunction in the operation of an affected facility, or any period during which the monitoring system is inoperative. These notifications, reports, and records are essential in determining compliance, and are required of all affected facilities subject to NSPS.

The latest form for NSPS for Phosphate Rock Plants (40 CFR Part 60, Subpart NN) (Renewal) expires 2023-03-31 and can be found here.