DWQ-2025-004719

May 29, 2025DIVISION OF WATER QUALITYUTAH DEPARTMENT OF ENVIRONMENTAL QUALITYPUBLIC NOTICE OF INTENT TOMODIFY 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 modify 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 OWNER: Big West Oil LLCPERMITTEE NAME: Big West OilMAILING ADDRESS: 333 West Center Street, North Salt Lake, Utah 84054TELEPHONE NUMBER: [phone]FACILITY
LOCATION: 333 West Center StreetUPDES PERMIT NO.: UT0026174PERMITTED OUTFALLS 001RECEIVING WATER: Salt Lake Sewage CanalBACKGROUND
Big West Oil LLC operates an oil refinery in North Salt Lake, Utah. The refinery has a facility onsite thattreats groundwater using a reverse osmosis (RO) treatment system. The treated
water is used onsite at therefinery for cooling water make up, fire suppression, engine cooling, and in other processes onsite. Untilrecently, this water was supplied by the local municipality
(North Salt Lake), and all process water wasdischarged to the local sewer district (North Davis Sewer District).
The discharge and permit are for the process at the refinery which located in the South West portion ofthe property. The source for water is a groundwater well. The water is pumped up
to the surface and sent tothe reverse osmosis (RO) treatment system. The RO filtrate goes to Outfall 001 and the permeate is sent toutility water system. A portion of the utility water
from the RO system is directed to a larger reservoir onsite.Water in the reservoir is used in in the fire suppression system. When the fire water (FW) pumps are activatedduring a fire,
they take water from the tank and pump it into the fire suppression system. A portion of thisflow is circulated back through the engines as cooling water which will then be discharged
through Outfall001. If there is no fire, but the engines are being tested to ensure their operation, or if they are being operateddue to engine maintenance, the fire suppression water
is piped back to the reservoir onsite. The modification is to increase the effluent flow limits from and average of 0.33 million gallon per day (MGD) and a maximum of 0.55 MGD. 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 MONTHXX, 202X. Written public comments can be submitted to: Daniel Griffin, 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 Daniel
Griffin at [phone].
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