DWQ-2025-004880

June 13, 2025DIVISION OF WATER QUALITYUTAH DEPARTMENT OF ENVIRONMENTAL QUALITYPUBLIC NOTICE OF INTENT TORENEW A UPDES PERMITPURPOSE 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 INFORMATIONPERMITTEE NAME: Cargill SaltFACILITY NAME:Cargill Salt, Grantsville Facility. MAILING ADDRESS: 15100 West Rowley RoadSkull Valley, Utah 84029TELEPHONE
NUMBER:[phone]FACILITY LOCATION:15100 West Rowley RoadSkull Valley, Utah 84029UPDES PERMIT NO.:UT0000639PERMITTED OUTFALLS:002OUTFALL LOCATION:Latitude 40o 46.963’ N, Longitude
112o 38.093’ WRECEIVING WATER: Return of bitterns for consumptive use to the Magnesium Cooperation of America or to the Great Salt Lake. BACKGROUND
Cargill Salt (Cargill) receives water from U.S. Magnesium LLC, which has water rights to the Great Salt Lake. After receiving this feed water, it is sent to concentration ponds where
the water is allowed to evaporate to reach a specific salt concentration. The concentrated water or “brine” is then moved into crystallizer ponds where salt crystallizes on the bottom
of the beds. The liquid remaining after much of the salt has crystallized out of solution (“bitterns”) is then moved to U.S. Magnesium LLC. U.S. Magnesium LLC uses the heavy brine supplied
from the Cargill to further process and extract additional minerals in their own solar pond complex. Cargill Salt does not have the ability to discharge bitterns directly back to the
Great Salt Lake. Cargill has not discharged bitterns directly to the Great Salt Lake since operations began at the Timpie location.PUBLIC COMMENTSPursuant 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 July XX, 2025. Written public comments can be submitted
to: Lonnie Shull, UPDES Individual Permits Section, Utah Division of Water Quality, PO Box 144870, Salt Lake City, Utah 84114-4870 or by email at: [e-mail] considering
public comments, the Director of the Division of Water Quality will issuea finalPermit 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 Lonnie Shull at [phone].
DWQ-2023-118754