PROPOSED TEMPORARY TURBIDITY INCREASE IN THE TONGUE RIVER IN SHERIDAN COUNTY

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality

PROPOSED TEMPORARY TURBIDITY INCREASE IN THE TONGUE RIVER IN SHERIDAN COUNTY

Sheridan County Conservation District has requested a waiver from the Wyoming Department of Environmental Quality, Water Quality Division (WDEQ/WQD) for a temporary increase in turbidity in the Tongue River (Section 31; T57N, R86W) in Sheridan County.  Activity in cold water streams is normally limited to a ten NTU increase over background.  Approval of this request would allow an exceedance of this limit for up to 14 working days, subject to monitoring and reporting. This activity will follow the procedures in Chapter 1, Section 23(c)(ii), of the WDEQ Water Quality Rules and Regulations, which allow for temporary elevated levels of turbidity in certain circumstances. An application for a 404 Permit from the U.S. Army Corps of Engineers has been submitted for this project. The Town of Ranchester, responsible for the public water supply intake downstream of this project, has been notified. Proposed activities include replacement of a diversion structure with a permanent cross-vane to maintain fish passage and stabilize adjacent stream segments.

Requests for related information and documents about the proposed temporary turbidity increase should be directed to Cathy Norris by email (cathy.norris@wyo.gov) or phone (307-777-6372).  Comments must be addressed to Cathy Norris, Wyoming DEQ/WQD, 200 West 17th  Street, 4th Floor, Cheyenne, WY 82002, and postmarked before 5:00 p.m. on May 7, 2018 (or faxed to 307-635-1784) to be considered.  Phone or email comments will not be accepted.