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DEQ announces public hearing and extends comment opportunity on application to modify a permit to construct and Tier 1 operating permit for J.R. Simplot Company – Don Siding Plant 

November 18, 2022 

Contact: Aaron Hoberg, Air Quality Engineer, aaron.hoberg@deq.idaho.gov

POCATELLO – The Idaho Department of Environmental Quality (DEQ) is announcing a public hearing and extending the public comment period on an application to modify a permit to construct and Tier 1 operating permit for J.R. Simplot Company – Don Siding Plant. 

J.R. Simplot Company – Don Siding Pocatello manufactures integrated phosphate fertilizer in Pocatello, Idaho. The facility is classified as a major facility because it emits or has the potential to emit PM10, PM2.5, CO, NOx, and SO2 above the major source threshold of 100 tons per year. The facility is also classified as a major facility because it emits or has the potential to emit hydrofluoric acid above the major source thresholds of 10 tons-per-year for any single hazardous air pollutant. 

The company submitted an application to modify an existing permit to construct and Tier 1 operating permit. This action would allow the facility to remove the cooling towers and expand the gypsum stack ponds. 

Public comment extension and public hearing 

The public now has until December 23, 2022, to submit public comments. The application materials are available for public review at DEQ’s State Office (1410 North Hilton Street), DEQ’s Pocatello Regional Office (444 Hospital Way #300 Pocatello, Idaho 83201), and on DEQ’s Public Comment Opportunities page.  

A public informational meeting is scheduled for December 22, 2022, at 6 pm MDT to address questions about the project. A formal public hearing will take place immediately after at 7 pm. Both events will take place at the Pocatello City Council Chambers (911 N 7 Ave, Pocatello, Idaho).  

Requests for accommodations can be made up to five days prior to the hearing. For arrangements, contact Dianne Hobbs at (208) 373-0440 or dianne.hobbs@deq.idaho.gov

For technical assistance on questions concerning this project or the permitting process, please contact Aaron Hoberg at (208) 373-0257 or aaron.hoberg@deq.idaho.gov 

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