For the better part of a year, Tri-State has been working with the Colorado Department of Public Health and Environment (CDPHE) to obtain an air permit revision for the Collom Development Project at the Colowyo coal mine in northwest Colorado. Though Collom is already operational, securing this voluntary air permit revision will allow the mine to utilize more accurate, site-specific information to demonstrate its compliance with National Ambient Air Quality Standards and will allow us to operate more efficiently. This is a mine that supports some 200 jobs and $200 million in economic activity for the region, and the Collom project could keep us mining for another 25-30 years.
As part of this routine request for revision, CDPHE has released the draft air permit revision for public comments through Saturday, October 12. A draft letter that can be customized or simply sent as is linked. The document explains the issue further and includes instructions for how to submit. Colowyo Mine - DRAFT Letter of support to CDPHE (Aug 2019)