EPA Rescinds SIMCOE Treating Site PSD Permit

The EPA has officially rescinded the Prevention of Significant Deterioration (PSD) permit for the SIMCOE Treating Site, with an effective date of March 19, 2026. This action means the permit, which would have governed air emissions for the site, will no longer be in effect.

Entities associated with the SIMCOE Treating Site should be aware that the previously issued PSD permit has been withdrawn. This rescission may necessitate a review of current or planned operations to ensure compliance with applicable air quality regulations in the absence of this specific permit. No immediate compliance actions are detailed, but the removal of the permit implies that operations must adhere to general air quality standards or any other relevant permits.