DAQ-2025-000073

,.tttf$nctor
September 29,2023
Mr. Bryce Bird, Director Certified Mail: 7022 0410 0002 3551 6745
Division of Air Quality
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, Utah 84116
RE:NSPS QQQ Semi-Annual Report - March 1,2023 through August ,1,2023
Director Bird:
HF Sinclair Woods Cross Refining LLC (HFSWCR) has conducted all of the required inspections of the
refinery systems in accordance with 40 CFR 50 Subpart QQQ. Per 40 CFR 60.698(c), HFSWCR is notifoing
you of the following findings and corrective actions for the following semi-annual period:
UTAH DEPARTMENT OF
ENVIRONMENTAL QUALITY
DIVISION OFAIR OUALITY
March 7, t3, t4 Low water levels in drains 5 lmmediately added water
which restored seals,
April t4, t5,20 Low water levels in drains,
drain plugged 18
lmmediately added water
which restored seals, WO
written to unoluc.
May L,7,12, t3 Low water levels in drains.1 lmmediately added water,
which restored seals
June 29,29,30
Extensive review
conducted, Low water
level in drains, plugged
drains, degradation of
water seal system
83
lmmediately added water,
work orders written to
unplug drains and repair
degraded drains
July t3,L9,25,27,29
Low water levels in drains,
degradation of water seal
system
57
lmmediately added water,
which restored seals,
Continued repair work from
previous month
August 77
lnternal observation
identified additional
applicable drains.
Degradation of water seal
svstem
55
Work orders written to
repair new drains, continued
repair work from previous
months
HF Sinclair Woods Cross Refining LLC
1070 W. 500 S, West Bountiful, UT 84087
801 -299-6600 | HFSinclair.com
REVIEWEDInitials: Date: Jan 8, 2025Complinace Status: OKFile #: 10123 (B2)
lf you have any questions or commenfs, please contact Matt Howes at (801) 299-7L24, or by emal!
(Matthew. Howes@H FSinclair.com).
Sincerely,
("r*- h"*r*'
uatt xo6r
Environmental Engineer
cc E Benson (r) File 2.2.7.1
REVIEWEDInitials: Date: Jan 8, 2025Complinace Status: File #: 10123 (B2)