Proposed Temporary Turbidity Increase in Hoback River in Sublette County

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SUBLETTE COUNTY — Nelson Engineering has requested a waiver from the Wyoming Department of Environmental Quality, Water Quality Division (WDEQ/WQD) for a temporary increase in turbidity in the Hoback River (Section 10, T37N, R113W) in Sublette County.

Activity in cold water streams is normally limited to a 10 NTU increase over background.

Approval of this request would allow an exceedance of this limit for up to 30 working days, subject to monitoring and reporting.

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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.

Proposed activities include streambank stabilization, replacing existing riprap and gabions with new riprap along 565 linear feet of the river.

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 March 6, 2018 (or faxed to 307-635-1784) to be considered.  Phone or email comments will not be accepted.