PROPOSED TEMPORARY TURBIDITY INCREASE IN ARIZONA, PACIFIC, AND SPREAD CREEKS IN TETON COUNTY

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality

PROPOSED TEMPORARY TURBIDITY INCREASE IN ARIZONA, PACIFIC, AND SPREAD CREEKS IN TETON COUNTY

Grand Teton National Park has requested a waiver from the Wyoming Department of Environmental Quality, Water Quality Division (WDEQ/WQD) for a temporary increase in turbidity in Arizona Creek (Section 10, T46N, R115W), Pacific Creek (Section 23, T45N, R114W), and Spread Creek (Section 9, T44N, R114W) in Teton 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 76 working days, subject to monitoring and reporting. These three creeks in Teton County are designated Class 1 waters. Point source discharges to Class 1 waters are prohibited except for storm water and construction related discharges. 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 for this project. Proposed activities include repair of structural deficiencies on Pacific Creek Bridge, Spread Creek Bridge, and Arizona Creek Box Culvert where erosion threatens to undermine abutments and has damaged wingwalls.

Requests for related information and documents about the proposed temporary turbidity increase should be directed to Cathy Norris by email (cathy.norris@wyo.gov) or phone (307-777-6372).  Comments must be addressed to Cathy Norris, Wyoming DEQ/WQD, 200 West 17th  Street, 4th Floor, Cheyenne, WY 82002, and postmarked before 5:00 p.m. on April 3, 2018 (or faxed to 307-635-1784) to be considered.  Phone or email comments will not be accepted.