Sign Up to Receive Blog Emails



2015 National Emissions Standards for Hazardous Air Pollutants (NESHAP)

Posted by [email protected] on Nov. 18, 2020     

October 29, 2020, U.S. EPA Administrator Wheeler finalized amendments to the 2015 National Emissions Standards for Hazardous Air Pollutants (NESHAP) for Phosphoric Acid Manufacturing. On September 6, 2016, PCS Phosphate Company, Inc. (now a subsidiary of Nutrien Ltd.) petitioned EPA to review the 2015 NESHAP based on newly available data. Following analysis of the petitioner’s data, EPA is finalizing revisions to the mercury standard for calciners in the Phosphoric Acid Manufacturing NESHAP. The amendment revises the mercury maximum achievable control technology floor for existing calciners from 0.14 milligrams per dry standard cubic meter (mg/dscm) at 3-percent oxygen to 0.23 mg/dscm at 3-percent oxygen. This revision more accurately represents the current baseline emissions from the PCS Phosphate facility; therefore, we do not anticipate a change in actual mercury emissions as a result of this action. The amendment fulfills EPA’s statutory requirements under the Clean Air Act, while maintaining the intent of the emission and operational standards of the 2015 NESHAP.


You can read the press release for this action or visit for more information.

Return to list