PROPOSED TEMPORARY TURBIDITY INCREASE IN THE LARAMIE RIVER IN GOSHEN COUNTY

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Wyoming Department of Environmental Quality

PROPOSED TEMPORARY TURBIDITY INCREASE IN THE LARAMIE RIVER IN GOSHEN COUNTY

The Fort Laramie National Historic Site has requested a waiver from the Wyoming Department of Environmental Quality, Water Quality Division (WDEQ/WQD) for a temporary increase in turbidity in the Laramie River (Section 30; T26N, R64W) in Goshen 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 three 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. Proposed activities include renovation of an existing irrigation diversion dam structure and dredging 900 yards of the diversion ditch behind the dam with an excavator. 

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 August 9, 2018 (or faxed to 307-635-1784) to be considered. Phone or email comments will not be accepted.