DAQ-2025-002226

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Dean P. Anderson
Vice President
Tesoro Refining & Marketing Company LLC
Tesoro Refining &Marketing Company LLC
A subsidiary of Marathon Petroloum Corporation
474 W 900 N
salt Lake city, UT 84103
January 27,2025
Bryce Bird, Director
Attn: Jeremy Marsigli
Utah Division of Air Quality
195 North 1950 West
P.O. Box 144820
Salt Lake City, UT 84114-4820
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JAN 24.2025
OF AR
Suerrrrrlr- rx pensoH
Second Half of 2024 Semiannual40 CFR 60 Subpart OOO Renort
60.698(c) VOC Monitorine Renort
Dear Mr. Bird,
This is the NSPS Subpart QQQ report covering the period of July 1,2024, to December3l,2024
for Tesoro Refining & Marketing Company LLC's Salt Lake City Refinery and Tesoro Logistics
Operations, LLC.
This report includes information required by ApprovalOrder DAQE-AN103350075-18, and Title V
Operating Permit 3500008002, conditions II.B.5.a-f.
This report summarizes inspections for the semi-annual period when a water seal was dry or
otherwise breached, or when a drain cap or plug was missing or improperly installed, or when
cracks, gaps, or other problems were identified that could result in VOC emissions, and includes the
corrective actions taken.
Drain No.Inspection
Date
Inspection
Technioue
Dry Seal Cap/Plug
Missins
Corrective
Action
H-1 711812024 Method 21 (not
regulatory
required)
N/A N/A Removed old
sealant, cleaned
area, and used
new sealant
H-2 7/1812024 Method 2l (not
regulatory
required)
N/A N/A Removed old
sealant, cleaned
area, and used
new sealant
M-l 7118t2024 Method 21 (not
regulatory
required)
N/A N/A Removed old
sealant, cleaned
area, and used
new sealant
M-8 7n8t2024 Method 21 (not
regulatory
required)
N/A N/A Removed old
sealant, cleaned
area, and used
new sealant
B-2-10335B-2-15659
3
Mr. Bryce Bird, Director
January 27,2025
Other Inspection ltems
o A routine inspection of the oily drain S-2 (laboratory sink) identified a missing water seal
due to a leak in the under-sink p-trap. The water faucet was opened to immediately
reestablish a water seal, a leak pan was placed under the p-trap, and the sink was removed
from hydrocarbon service until a maintenance work order was executed and the leaking p-
trap was repaired.
r During an inspection of the Flare Gas Recovery Unit area drains, the water seal for drain
hub DH-5 could not be visually verified. A Method 2l inspection was performed, and VOC
emissions did not exceed 500 ppm. In an abundance of caution, a drop-in vertical pipe trap
was subsequently installed to ensure ease of visual inspection.
If you have any questions regarding this report, please contact James Beardall 801-521-4914.
Based on information and reasonable inquiry, I certifr the information provided in this report is
true, accurate, and complete.
t^"yo-O)=----
Dean P. Anderson
Vice President
Tesoro Refining & Marketing Company LLC
cc: Mr. Scott H. Patefield, Branch Chief Vrt USPS
US EPA Region 8
Enforcement and Compliance Assurance Division
8ENF-AT- Air and Toxics Enforcement Branch
1595 Wynkoop Street
Denver, Colorado 80202-1 129