Wyoming Department of Environmental Quality ?| view as a webpage [ [link removed] ]

Wyoming Department of Environmental Quality
Public Notice: PROPOSED DISCHARGE OF DREDGED OR FILL MATERIAL TO THE FIREHOLE RIVER

PROPOSED DISCHARGE OF DREDGED OR FILL MATERIAL TO THE FIREHOLE RIVER

The Wyoming Department of Environmental Quality (WDEQ) has received a request from the United States National Park Service for State certification of U.S. Army Corps of Engineers (USACE) Nationwide Permit #3, for discharge of dredged or fill material to the Firehole River in Yellowstone National Park, Wyoming. The purpose of the project is to rehabilitate the raw water intake for the Old Faithful Water Treatment Plant. All waters within Yellowstone National Park are designated Class 1 where point source discharges are prohibited except for storm water and construction related discharges. This certification will require meeting the provisions in Chapter 1, Section 7(b) of the WDEQ Water Quality Rules and Regulations, which allows these discharges under certain circumstances. Proposed rehabilitation activities at the raw water intake on the Firehole River include replacement of aging components such as gates, the trashrack, booms, concrete structures, and steel embeds. Two temporary cofferdams will be installed to allow work to be completed in the dry with installation of a temporary diversion to maintain the raw water supply to the treatment plant. Approximately 101 cubic yards of imported and native material will be used to construct the temporary cofferdams and diversion. No wetlands will be impacted.

Requests for information about the proposed water quality certification should be directed to Eric Hargett by email ([email protected]) or phone (307-777-6701). Written comments must be addressed to Eric Hargett, Wyoming DEQ/WQD, 200 W. 17th Street ? 4TH floor, Cheyenne, WY, 82002, and be postmarked on or before 5:00 p.m. on Aug 1, 2023 to be considered. Electronic comments may only be submitted through and accepted by the Wyoming DEQ comment portal provided at [link removed] [ [link removed] ]. Phone comments will not be accepted. Para espa?ol, visite deq.wyoming.gov [ [link removed] ].


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