DAQ-2025-002376

Troy Tortorach
Refinery Manager
Salt Lake Refinery
Chevron ProducG Company
685 South Chevron Way
North Salt Lake, UT 84054
Tel [phone]
Fax [phone]
April24b,2025
CERTIFIED MAIL
RETURN RECEIPT NO. 7019 0700 0001 s349 7573
Mr. Bryce Bird, Director ([e-mail])
Utah Division of Air Quality
195 North 1950 West
PO Box 144820
salt Lake city, Utah 84114-4820
Benzene Waste Operations NESHAP
Quarterly Report -l't Quarter 2025
Dear Mr. Bird:
In accordance with the requirements specified in 40 CFR 61.357(dX6) and (7), Chevron is submitting the
following Benzene Waste Operations NESHAP (BWON) documents:
o 2025 I't Quarter Reporto 2025 I't Quarter Inspection Certification
Ouarterlv Report [40 CfR 61.357(dx7)l
Of the information required in a quarterly report, the information requested under 61.357(dx7)(iv)(A),
6l.357(dx7)(iv)(D) and 61.357(d)(7)(iv)(l) is applicable to the Salt Lake Refinery.
(iv)(A) Each 3-hour period of operation during which the average temperature of the gas stream
in the combustion zone of a thermal vapor incinerator, as measured by the temperature
device, is more than 28 "C below the design combustion zone temperature.
All 3-hour periods during which the average Regenerative Thermal Oxidizer (RTO) gas stream
temperature in the combustion zone was below 1350 "F are listed in Table I .
(iv)(D) Each 3-hour period of operation during which the average concentration of organics or the
average concentration of benzene in the exhaust gas from a carbon adsorber, condenser, or other
vapor recovery system is more than 20 percent greater than the design concentration level of
organics or benzene in the exhaust gas.
The Chevron Marketing Terminal uses a Vapor Recovery Unit (VRU) to control BWON streams. During
the reporting period, there were no 3-hour periods in which the average concentration of organics or
benzene in the exhaust gas was more than 20 percent greater than the design concentration level oforganics
or benzene in the exhaust gas.
EI'|V|RONUEITITAL Otxuil
APR 3 0 ZoZS
Drusffcil oF Ah otntw
REVIEWEDInitials:Date: May 6, 2025Compliance Status:OKFile #: 10119 (B2)
(iv)(I) Each occurrence when the carbon in a carbon adsorber system that is not regenerated
directly onsite in the control device is not replaced at the predetermined interval specified in
61.354(d) of this subpart.
During the reporting period, one set of carbon canisters were on site, utilizing dual carbon canisters in
series. Breakthrough monitoring is performed between the two canisters on a weekly basis; the secondary
canister is monitored monthly.
During the reporting period there were no occurences when carbon canisters were not replaced at the
predetermined interval.
Ouarterlv Inspection Certilication I40 CFR 61.357(dx6)l
I certifo that, to the best of my knowledge and belief, based upon reasonable inquiry, that the inspections
required between Jan l, 2025 and March 31, 2025 have been carried out in accordance with the
requirements of 40 CFR 61, Subpart FF.
Please contact Joseph Moore via email at [e-mail] or [phone] if you have any
questions regarding this report.
Sincerely,-64
Troy Tortorich
725.1
Attachment: Table l: 3-hour periods during which the average RTO gas stream temperature
in the combustion zone was below 1350' F
CERTIFIED MAIL NO. 7019 0700 0001 5349 7580
Bob Gallagher
U.S. EPA Region 8 - Montana Office
l0 West l5th Street, Suite 3200
Helenq MT 59626
Phone: [phone]
Fax: [phone]
Gal lagher. Bob@epa. eov
Table l: 3-hour periods during which the average RTO gas stream temperature
in the combustion zone was below 1350" F
3-hour period average temp < l350oF (Start time of3 hr. period)
7/2512025 6:00
215/2025 9:o0
215/202512:OO
21512025 LS:OO
21512025 L8:00
21512025 ZL:oo
216/2025 o:OO
21612025 3:oo
216/2025 6:00
2/512a25 9:00
217/2025 3:OO
217/2025 6:00
217 /2025 9:00
UlAI-i IJEPN R]'MFN I OF
E I']VI ROI,IMENTAL QUALITY
i)lVls^lON OF AIR OUALITY