DAQ-2024-004865

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January 24,2024
Mr. Bryce Bird, Director
Attn: Jeremy Marsigli
Utah Division of Air Quality
195 North 1950 West
P.O. Box 144820
Tesoro Refining &
Marketing Company LLC
474 West 900 North
salt Lake city, uT 84103-1494
UTAH DEPABTMENT OF
ENVIRONMENTAL OUAUTY
JAN 2 ii ?l?4
DIVISION OF AIR QUALITY
Salt Lake City, Utah 84114-4820
Hq.nd Peliuered
Re: Tank Seal Insnections - Tesoro Refinins and Marketins Companv
This letter is notification that the Salt Lake City Refinery will be performing inspections on its
floating roof tanks during the months of March, April, and May 2024. This letter provides UDAQ
30-day notification of tank inspections conducted pursuant to NSPS Subpart Kb and MACT
Subpart CC. While tank inspections conducted pursuant to R307-327 do not require formal
notification, Tesoro is also notifring UDAQ of these inspections. The following lists which tanks
will be inspected:
External Floating Roof Tanks:
Tanks 243,307,325,326,423,421,405,308, 432,424,324,242,328,252,327,298,330,431,
and422.
Internal Floating Roof Tanks:
Tanks L03,241,186,412,503,245,402,331,244,321,190,248,188,413,414and504.
Please contact me at [phone] if you have any questions or comments.
Sincerely,
Brian A. Mitchell
Advanced Environmental Engineer
Salt Lake City Refinery
B-2-10335