General Information

Government Type

State Agency

Entity

Department of Environmental Quality

Public Body

Division of Water Quality

Notice Information

Add Notice to Calendar

Notice Title

DIVISION OF WATER QUALITY UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY PUBLIC NOTICE OF INTENT TO RENEW A UPDES PERMIT

Notice Type(s)

Notice

Event Start Date & Time

October 22, 2025 03:40 PM

Event End Date & Time

November 21, 2025 05:00 PM

Description/Agenda

DIVISION OF WATER QUALITY UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY PUBLIC NOTICE OF INTENT TO RENEW A UPDES PERMIT PURPOSE OF PUBLIC NOTICE The purpose of this public notice is to declare the Director of the Division of Water Quality's intention to renew a Utah Pollutant Discharge Elimination System (UPDES) Permit under the authority of the Utah Water Quality Act, Utah Code § 19-5-106(2)(g). The draft Permit and the Fact Sheet (collectively, the draft Permit documents) are available for review and comment. PERMIT INFORMATION PERMITTEE NAME: City of St. George FACILITY NAME: Gunlock Water Treatment Facility MAILING ADDRESS: 175 East 200 North, St. George, UT 84770 TELEPHONE NUMBER: (435) 627-4850 FACILITY LOCATION: Off Gunlock Drive, Dammeron Valley, UT 84783 UPDES PERMIT NO.: UT0026123 PERMITTED OUTFALLS: 001 OUTFALL LOCATION: Latitude 37 13' 46' N and longitude 113 46' RECEIVING WATER: Santa Clara River BACKGROUND The Gunlock Water Treatment Facility (Facility) is a water treatment facility designed primarily to treat arsenic in groundwater. The Facility supplies clean drinking water to the City of St. George (Permittee) and surrounding areas. Arsenic and other contaminants will be removed through filter media. The main treatment process involves pre-oxidation with chlorine, coagulation (ferric chloride) and pressure filtration with sand and anthracite media and air scour capabilities, followed by post-chlorination. Backwash waste flows is pumped to one of two backwash clarifiers. Water within the clarifiers is decanted and returned to the front of the plant. Periodically, the sludge in the tank bottom is removed through a blowdown process and pumped to drying beds for further processing. Water within the drying beds is removed through evaporation. However, in the event that the water production exceeds the evaporation rate, decanted water is sent to a detention pond, which eventually runs to the Santa Clara River. The discharge is not anticipated to be year-round, only during periods of low evaporation and high-water production. See Permit and Fact Sheet for more information. PUBLIC COMMENTS Pursuant to Utah Admin. Code R317-8-6(6.6), any interested person may submit written comments on the draft permit documents and may request a public hearing if no hearing has already been scheduled. A request for a public hearing shall be in writing and shall state the nature of the issues proposed to be raised in the hearing. All comments will be considered in making the final decision and shall be answered as provided in Utah Admin. Code R317-8-6(6.12). Commenters have an affirmative obligation to raise all reasonably ascertainable issues and submit all reasonably available arguments and factual grounds supporting their position, including all supporting material. Supporting material must be included in full and may not be incorporated by reference, unless the material is already part of the administrative record. Public comments are invited any time prior to the deadline of the close of business on November 21st, 2025. Written public comments can be submitted to: Lindsay Cowles, UPDES Individual Permits Section, Utah Division of Water Quality, PO Box 144870, Salt Lake City, Utah 84114-4870 or by email at: lcowles@utah.gov . After considering public comments, the Director of the Division of Water Quality will issue a final Permit decision. The draft Permit documents are available for public review under 'Public Participation' at www.waterquality.utah.gov/. Additionally, If internet access is not available, a copy may be obtained by calling Lindsay Cowles at (385) 414-0311.

Notice of Special Accommodations (ADA)

In compliance with the Americans with Disabilities Act, individuals needing special accommodations (including auxiliary communicative aids and services) during this meeting should notify Emily Canton at 801-536-4342.

Notice of Electronic or Telephone Participation

NA

Meeting Information

Meeting Location

195 N 1950 W
Floor 3
Salt Lake City, UT 84116
Show in Apple Maps Show in Google Maps

Contact Name

Emily Canton

Contact Email

ercanton@utah.gov

Contact Phone

(801)536-4342

Notice Posting Details

Notice Posted On

October 22, 2025 03:40 PM

Notice Last Edited On

October 22, 2025 03:40 PM

Subscribe by Email

Subscription options will send you alerts regarding future notices posted by this Body.