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The Wyoming Department of Environmental Quality (WDEQ) has received a request from the U.S. Army Corps of Engineers for a temporary increase in turbidity in the Snake River near Jackson, Wyoming. The temporary increase in turbidity is associated with the replacement or removal of deteriorated or overbuilt culverts along the Snake River levee system.
Activity in cold water streams like the Snake River 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 forty (40) total 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, which allow for temporary elevated levels of turbidity in certain circumstances. Measures that include temporary cofferdams, sandbags, or eco-blocks will be used to contain turbid water from construction activities. The contained turbid water would then be pumped to an upland location for percolation into the ground.
Requests for information about the proposed temporary turbidity increase should be directed to Eric Hargett by email ([email protected]) or phone (307-777-6701). Written comments must be addressed to Eric Hargett, Wyoming DEQ/WQD, 200 W. 17th Street ? 4TH floor, Cheyenne, WY, 82002, and be postmarked on or before 5:00 p.m. on April 24, 2024, to be considered. Electronic comments may only be submitted through and accepted by the Wyoming DEQ comment portal provided at http://wq.wyomingdeq.commentinput.com./ Phone comments will not be accepted.
Para espa?ol, visite deq.wyoming.gov. Americans with Disabilities Act: special assistance or alternative formats will be made available upon request for individuals with disabilities. Please provide at least fourteen (14) days before the close of public comment period for such requests.
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