PROPOSED TEMPORARY TURBIDITY INCREASE IN THE LITTLE MEDICINE BOW RIVER IN CARBON COUNTY

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Wyoming Department of Environmental Quality

PROPOSED TEMPORARY TURBIDITY INCREASE IN THE LITTLE MEDICINE BOW RIVER IN CARBON COUNTY

The Wyoming Department of Environmental Quality (WDEQ) Abandoned Mine Land Program has requested a waiver from the WDEQ, Water Quality Division (WDEQ/WQD) for a temporary increase in turbidity in the Little Medicine Bow River (Sections 11, 14, 15, 22 & 23; T27N, R78W) in Carbon 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 sixteen (16) 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. The applicant has submitted an application for a 404 permit from the U.S. Army Corps of Engineers for the project. Proposed activities include the installation of four grade control structures.

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 May 8, 2019 (or faxed to 307-635-1784) to be considered. Phone or email comments will not be accepted.