PROPOSED DISCHARGE OF DREDGED OR FILL MATERIAL TO WETLANDS ADJACENT TO OBSIDIAN AND GLEN CREEKS

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Wyoming Department of Environmental Quality

PROPOSED DISCHARGE OF DREDGED OR FILL MATERIAL TO WETLANDS ADJACENT TO OBSIDIAN AND GLEN CREEKS

The Wyoming Department of Environmental Quality (WDEQ) has received a request from the Western Federal Lands Highway Division for State certification of U.S. Army Corps of Engineers (USACE) Nationwide Permits #6, for discharge of dredged or fill material to wetlands adjacent to Obsidian and Glen Creeks in Yellowstone National Park, Wyoming. The purpose of this project is to conduct a geotechnical investigation in preparation for reconstruction of the Phase 3 portion of the Grand Loop Road. All waters within Yellowstone National Park are designated Class 1 waters where point source discharges are prohibited except for storm water and construction related discharges. This certification will require meeting the provisions in Chapter 1, Section 7(b) of the WDEQ Water Quality Rules and Regulations, which allows these discharges under certain circumstances. Proposed activities includes drilling 27 holes to investigate subsurface conditions. The project will result in temporary fill of approximately 0.005 acre of wetland adjacent to Obsidian Creek and 0.005 acre of wetland adjacent to Glen Creek.

Requests for information about the proposed water quality certification should be directed to Eric Hargett by email (eric.hargett@wyo.gov) or phone (307-777-6701). 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 December 31, 2019 to be considered. Phone or email comments will not be accepted.