PROPOSED TEMPORARY TURBIDITY INCREASE IN THE SNAKE RIVER IN TETON COUNTY

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Wyoming Department of Environmental Quality

PROPOSED TEMPORARY TURBIDITY INCREASE IN THE SNAKE RIVER IN TETON COUNTY

Alder Environmental has requested a waiver from the Wyoming Department of Environmental Quality, Water Quality Division (WDEQ/WQD) for a temporary increase in turbidity in the Snake River (Section 29; T42N, R116W) in Teton County. Activity in cold water streams is normally limited to a ten (10) NTU increase over background. Approval of this request would allow an exceedance of this limit for up to ten (10) 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 has been submitted to the U.S. Army Corps of Engineers for a 404 Permit for the project. Proposed activities include the installation of a toe boulder bank, boulder trench, and gravel fill to restore uplands.

Requests for related information and documents about the proposed temporary turbidity increase should be directed to Bret Callaway by email (bret.callaway@wyo.gov) or phone (307-777-5802). Comments must be addressed to Bret Callaway, Wyoming DEQ/WQD, 200 West 17th Street, 4th Floor, Cheyenne, WY 82002, and postmarked before 5:00 p.m. on January 2, 2019 (or faxed to 307-635-1784) to be considered. Phone or email comments will not be accepted.