General Information

Government Type

State Agency

Entity

Department of Environmental Quality

Public Body

Division of Water Quality

Notice Information

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Notice Title

Public Notice - Gunlock Water Treatment Plant

Notice Tags

Water Quality

Notice Type(s)

Notice

Event Start Date & Time

December 14, 2020 08:00 AM

Event End Date & Time

January 14, 2021 05:00 PM

Description/Agenda

DIVISION OF WATER QUALITY UTAH DEPARTMENT OF ENVIRONMENTAL QUALITY PUBLIC NOTICE OF NEW UPDES PERMIT PURPOSE OF PUBLIC NOTICE The purpose of this public notice is to declare the State of Utah's intention to issue a Utah Pollutant Discharge Elimination System (UPDES) Permit under the authority of the Utah Water Pollution Control Act, Section 19-5-104 and 107, Utah Code Annotated 1953, as amended. Said 'Permit' refers to UPDES Permit and the Fact Sheet Statement Of Basis (including the Total Maximum Daily Loads (TMDL's)) if applicable, as per Section 303 (d) of the Federal Clean Water Act (CWA). PERMIT INFORMATION PERMITTEE NAME: Gunlock Water Treatment Plant MAILING ADDRESS 175 East 200 North St. George, UT 84770 TELEPHONE NUMBER: (435) 627- 4854 FACILITY LOCATION: Off Gunlock Drive, Dammeron Valley, UT 84783 UPDES PERMIT NO.: UT0026123 OUTFALLS: 001 RECEIVING WATERS: Santa Clara River BACKGROUND The Gunlock Water Treatment Facility will be a newly constructed facility designed to primarily treat arsenic in groundwater. Arsenic and other contaminants will be removed through filter media. The main treatment process involves a 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 will be pumped to one of two backwash clarifiers. Water within the clarifiers will be decanted and returned to the front of the plant. Periodically, the sludge in the tank bottom will be removed through a blowdown process and will be pumped to drying beds for further processing. Water within the drying beds will be removed through evaporation. However, in the event that the water production exceeds the evaporation rate, decanted water will be sent to a detention pond, which eventually runs to the Santa Clara River. Dried Sludge will be removed and hauled to a local landfill. The discharge is not anticipated to be year-round, but only during periods of low evaporation and high water production. PUBLIC COMMENTS Public comments are invited any time prior to the deadline of the close of business on January 14, 2020. Written public comments can be submitted to Leanna Littler, UPDES Surface Water Section, Utah Division of Water Quality, PO Box 144870, Salt Lake City, Utah 84114-4870 or by email at lnlittler@utah.gov. After considering public comment, the Utah Division of Water Quality may execute the permit issuance, revise it, or abandon it. The permit is available for public review under https://deq.utah.gov/water-quality/water-quality-public-notices. If internet access is not available, a copy may be obtained by calling Leanna Littler at (801) 536-4397.

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

PO Box 144870
Salt Lake City, UT 84114-4870
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Contact Name

Emily Canton

Contact Email

ercanton@utah.gov

Contact Phone

(801)536-4342

Notice Posting Details

Notice Posted On

December 14, 2020 02:54 PM

Notice Last Edited On

December 14, 2020 03:15 PM

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