DAQ-2025-000071

,.tttF$nctor
March L3,2023
Mr. Bryce Bird, Director Certified Mail: 7019 1120 0000 0079 9796
Division of Air Quality
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, Utah 84116
RE:NSPS QqQ Semi-Annual Report - September t, 2022 through February 28,2023
Director Bird:
HF Slnclair Woods Cross Refining LLC has conducted all the required inspections of the refinery
systems in accordance with 40 CFR 60 Subpart QQQ. Per 40 CFR 60.698(c), HF Sinclair is notifoing you of
the following findings and corrective actions for the following semi-annual period:
urAii il[ D'\iiT i\,lEhi]' LrF*Yj$i rjl::Ii ! riil'{ilui i, I Ir
I uan 1t 2023 ii!L-__.__-'
D;r'/lSfC,\ 3F i'ij ai.i,: i-ii{
September 3,5,L2,L4 Low water levels in drains,
drain plugged 29
lmmediately added water
which restored seals,
WO#10055190 written to
unolup.
October 4'6 Low water levels in drains. 20 lmmediately added water
which restored seals.
November 3,4,6,7 Low water levels in drains.11 lmmediately added water,
which restored seals
December 3,4 No issues found.11 lmmediately added water,
which restored seals.
January 74,L5 Low water levels in drains 7 lmmediately added water,
which restored seals
February 2,5,6 Low water levels in drains 4 lmmediately added water,
which restored seals.
HF Sinclair Woods Cross Refining LLC
1070 W. 500 S, West Bountitul, UT 84087
801-299-6600 | HFSinclair.com
REVIEWEDInitials: Date: Jan 8, 2025Compliance Status: OKFile #: 10123 (B2)
lf you have any questions or commentg please contact AlVargas at [phone], or by email
(Jose.Va rgas@ hollyfrontier.com ).
Environmenta! Specialist
cc: E Benson (r) File 2.2.7.1
REVIEWEDInitials: Date: Jan 8, 2025Compliance Status: OKFile #: 10123 (B2)