PROPOSED ANNUAL (2019) WAIVER FOR TEMPORARY TURBIDITY INCREASE DURING EMERGENCY ROAD MAINTENANCE PROJECTS

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality

PROPOSED ANNUAL (2019) WAIVER FOR TEMPORARY TURBIDITY INCREASE DURING EMERGENCY ROAD MAINTENANCE PROJECTS

The Wyoming Department of Environmental Quality (DEQ), Water Quality Division (WQD) has received a request from the U.S. Forest Service for an annual turbidity waiver. This authorization would allow temporary increases in turbidity to include road, culvert, and other minor maintenance or repairs to address force majeure impacts in or adjacent to surface waters. Increases in turbidity resulting from activities occurring in cold water fisheries and drinking water supplies are typically limited to a ten nephelometric turbidity unit (NTU) increase, and warm water and non-game fisheries are allowed only a 15 NTU increase. Approval of this request would allow for an exceedance of this limit for up to 10 days on individual projects. This request will follow the procedures of Section 23(c)(ii) of Chapter 1 of the Wyoming Water Quality Rules and Regulations and Surface Water Standards which states that the WQD administrator can grant short-term increases of turbidity that have been determined by the administrator to have only a minimal effect on water uses.

This turbidity waiver will only cover projects for the U.S. Forest Service or by contractors employed by this entity that are initiated in the 2019 calendar year. This authorization applies to all such projects covering multiple Nationwide 404 Permits from the U.S. Army Corps of Engineers.

Questions or comments should 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 December 31, 2018 (or faxed to 307-635-1784) to be considered. Phone or email comments will not be accepted.