Accepting comments from March 6, 2026, through May 5, 2026.
The Idaho Department of Environmental Quality (DEQ) is seeking comment on a proposed Class 2 modification for PacificCorp’s Idaho Falls Pole Yard Facility.
PacifiCorp is the parent company of Rocky Mountain Power, which serves power grid customers in eastern and southeastern Idaho. Under Idaho’s Hazardous Waste Management Act (HWMA), PacifiCorp operates a pole yard facility in Idaho Falls with a Post Closure HWMA permit (EPA#IDD000602631) administered by DEQ. The modifications proposed would do the following:
- Replace a point of compliance well from the Corrective Action, Compliance, and Detection Monitoring Programs due to drought issues
- Reduce groundwater monitoring frequency from semiannual to annual
- Eliminate requirements to calculate groundwater flow
- Identify chemical and site specific thresholds
- Clarify statistical methods used and update toxicity factors for calculating groundwater protective standards
- Update parts of the permit, including forms, figures, tables, formatting errors, and the process for submittals
The draft modification and supporting documents are available for public review at DEQ’s State Office (1410 N. Hilton Street, Boise, Idaho), DEQ’s Idaho Falls Regional Office (900 North Skyline Suite B, Idaho Falls, Idaho), and below under Related Documents.
A public meeting regarding this request is scheduled for April 1, 2026, at 7 p.m. at the Holiday Inn (3005 South Fork Boulevard, Idaho Falls, Idaho) to discuss the proposed modifications.
Written comments on the draft permit will be accepted through May 5, 2026, by 5 p.m. MT. Submit comments electronically on DEQ’s website or by mail or email to:
Andrew Ramsey
Idaho Department of Environmental Quality
Waste and Remediation Division
1410 North Hilton
Boise, ID 83706
(208) 373-0163
andrew.ramsey@deq.idaho.gov
Related Documents
Public Notice
Permit Modification
Accessibility Services: The Idaho Department of Environmental Quality will provide reasonable language access services and/or disability services for documents at no charge. To request an accommodation under Title VI of the Civil Rights Act of 1964 or Americans with Disabilities Act, contact DEQ’s nondiscrimination coordinator at (208) 373-0271 or accessibility@deq.idaho.gov. Para obtener información en español, visite https://www.deq.idaho.gov/about-us/accessibility/.
Official Government Website
DEQ announces public comment period on Class 2 permit modification for PacifiCorp
Accepting comments from March 6, 2026, through May 5, 2026.
The Idaho Department of Environmental Quality (DEQ) is seeking comment on a proposed Class 2 modification for PacificCorp’s Idaho Falls Pole Yard Facility.
PacifiCorp is the parent company of Rocky Mountain Power, which serves power grid customers in eastern and southeastern Idaho. Under Idaho’s Hazardous Waste Management Act (HWMA), PacifiCorp operates a pole yard facility in Idaho Falls with a Post Closure HWMA permit (EPA#IDD000602631) administered by DEQ. The modifications proposed would do the following:
The draft modification and supporting documents are available for public review at DEQ’s State Office (1410 N. Hilton Street, Boise, Idaho), DEQ’s Idaho Falls Regional Office (900 North Skyline Suite B, Idaho Falls, Idaho), and below under Related Documents.
A public meeting regarding this request is scheduled for April 1, 2026, at 7 p.m. at the Holiday Inn (3005 South Fork Boulevard, Idaho Falls, Idaho) to discuss the proposed modifications.
Written comments on the draft permit will be accepted through May 5, 2026, by 5 p.m. MT. Submit comments electronically on DEQ’s website or by mail or email to:
Andrew Ramsey
Idaho Department of Environmental Quality
Waste and Remediation Division
1410 North Hilton
Boise, ID 83706
(208) 373-0163
andrew.ramsey@deq.idaho.gov
Related Documents
Public Notice
Permit Modification
Accessibility Services: The Idaho Department of Environmental Quality will provide reasonable language access services and/or disability services for documents at no charge. To request an accommodation under Title VI of the Civil Rights Act of 1964 or Americans with Disabilities Act, contact DEQ’s nondiscrimination coordinator at (208) 373-0271 or accessibility@deq.idaho.gov. Para obtener información en español, visite https://www.deq.idaho.gov/about-us/accessibility/.
Public Comment Form