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DEQ seeks comment on draft 401 certification for I-84 Franklin Interchange to Karcher Interchange

Accepting comments from April 22, 2021, through May 13, 2021.

The Idaho Department of Environmental Quality (DEQ) seeks comment on a draft 401 water quality certification for the I-84 Franklin Interchange to Karcher Interchange

The project proposes to reconstruct and expand a 5-mile long segment of interstate roadway along I-84 between Caldwell and Nampa. The project will eliminate numerous direct stormwater discharges from I-84 into Indian Creek. While eliminating the direct discharges to Indian Creek the project would redirect and convey stormwater into ponds or swales that would treat stormwater runoff prior to entering Indian Creek.

Based upon its review of the joint application for permit, received on April 16, 2021, DEQ certifies that if the permittee complies with the terms and conditions imposed by the permit along with the conditions set forth in this water quality certification, then there is reasonable assurance the activity will comply with the applicable requirements of Sections 301, 302, 303, 306, and 307 of the Clean Water Act, the Idaho Water Quality Standards (WQS) (IDAPA 58.01.02), and other appropriate water quality requirements of state law.

Staff Contact
Kati Carberry
Water Quality Analyst

Related Documents
Draft Certification

Public Comment Form

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