PROPOSED DISCHARGE OF DREDGED OR FILL MATERIAL TO THE ENTERPRISE DITCH

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality

PROPOSED DISCHARGE OF DREDGED OR FILL MATERIAL TO THE ENTERPRISE DITCH

 The Wyoming Department of Environmental Quality (WDEQ) has received a request from Short Elliott Hendricks, Inc. on behalf of Jackson Hole Airport for State certification of U.S. Army Corps of Engineers (USACE) Nationwide Permit #46, for discharge of dredged or fill material to the Enterprise Ditch within Grand Teton National Park, Wyoming. The purpose of this project is to relocate a segment of the Enterprise Ditch to better utilize the Jackson Hole Airport developable property. All waters within Grand Teton National Park are designated Class 1 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 will consist of modifying the Enterprise Ditch from an open channel to a set of underground culverts that will extend from the easternmost airport boundary and connect to the existing ditch culverts under airport runway. The ditch will be conveyed within 285 linear feet of 2’ X 9’ concrete box culverts sized to maintain existing ditch capacity.

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 May 1, 2018 to be considered.  Phone or email comments will not be accepted.