DAQ-2025-002407

Troy Tortorich
Refinery Manager
Salt Lake Refinery
Chevron Products Company
685 South Chevron Way
North Salt Lake, UT 84054
Tel [phone]OO
Fax [phone]
DEPARTMENT OF
ENVIRONMENTAL OUAUTY
MAR 25 2025
DIVISION OF AIR OUAIITY
March 17,2025
CERTIFIED MAIL
RETURN RECEIPT NO. 7019 0700 0001 5349 7986
Mr. Bryce Bird, Director
Division of Air Quality
Utah Department of Environmental Quality
195 North 1950 West
PO Box 144820
Salt Lake ciry, uT 84114-4820
MACT CC Periodic Report -2d H^lf 2024
Dear Mr. Bird,
In compliance with the reporting requirements of 40 CFR Part 63 Subpart CC, the following constitutes
the periodic report required by $63.655(9) applicable to the Chevron Salt Lake Refinery. This submittal
covers the period from July 19,2024 to January 18,2025.
The following sections include the applicable reporting requirements.
I. Internal Floating Roofs - $63.655(9)(2)
This requirement is not applicable as there are no IFR tanks subject to $63.646 or $63.660 at
the Refinery.
II. External Floating Roofs - $63.655(gX3)
The requirements of $63.655(g)(3Xi) do not apply as there are no EFR tanks subject to
$63.646 at the Refinery. For purposes of $63.655(gX3Xii), there were no EFR tank inspection
failures or extension requests utilized during the reporting period.
III. Miscellaneous Process Vents - $63.655(gX6)
There were no deviations during the reporting period.
IV. Performance Test Results - $63.655(gX7)
Not applicable for the reporting period. No performance tests for purposes of 40 CFR 63
Subpart CC were conducted during the reporting period.
V. Heat Exchange Systems - $63.655(g)(9)
(i) The number of heat exchange systems at the plant site subject to the monitoring
requirements in $63.654: four
. The number of heat exchange systems at the plant site found to be leaking: zero
Monitoring is conducted monthly in accordance with $63.65a(c)(a)(i), therefore the
total strippable hydrocarbon leak action level is 6.2 ppmv.
REVIEWEDInitials:Date: May 1, 2025Compliance Status:OKFile #: 10119 (B2)
(iv)
(v)
Not applicable for the reporting period
Not applicable for the reporting period
VI.Pressure Relief Devices (PRD) - $63.655(gX10)
During the reporting period, there were no instrument readings of 500 ppm or greater as
detected by Method 21 of 40 CFR Part 60. All required PRD monitoring was conducted
during the reporting period.
VII. Flares - $63.655(gXll)
(i) For purposes of $63.655(gX I I Xi), there were no instrument readings of at least one
minute of regulated material being routed to the flare with no pilot flame present
during the reporting period.
(ii) For purposes of $63.655(eX I I )(ii), there were instances of visible emissions that
exceeded a total of 5 minutes in a 2-hour period during the reporting period. Each
instance is shown in the table below.
Flare 3
Date 2-hour period Total minutes
8t3t2024 4:00-6:00 ll
8^212024 l4:00-16:00 5.25
( iii)During the reporting period, for purposes of $63.655(gX I I Xiii), there were no flare
tip velocity deviations from the limits at $63.670(dXl)-(2).The net heating value in
the combustion zone (NHVcz) for Flares 1,2 and 3 periodically dropped below the
threshold at $63.670(e)( I ) of 270 Btu/scf. Each I 5-minute block below the threshold
is shown in the tables below.
Flare 3
Date l5-min Block(s)NHVcz (Btu/scf)NHVvg (Btu/scf)
8t7 t2024 3:45-4:15 225 513
812212024 4: I 5-5:00 218 416
9t3t2024 9:00-9:15 209 627
9t412024 4:45-5:00 233 392
91812024 4:15-4:45
6:30-6:45
178
255
s04
669
9t9t2024 22:15-22:45 217 619
9n212024 l:45-2:00 232 474
9fi3n2024 2:15-2:30 207 281
912012024 21:15-21:45 103 206
9t2312024 l2:15-12:45 243 971
9t24t2024 7 :15-7 :30 220 274
9t25t2024 5:00-5:30 t62 404
912712024 2:00-2:15 234 348
10t2t2024 I 8:30- I 8:45 255 57s
Flare 3
Date 15-min Block(s)NHVcz (Btu/scf)NHVvg (Btu/sct)
t0t3t2024 l8:30-9:15
l9:45-20:45
22:15-22:45
8l
23
75
264
258
223
t0t4t2024 5:30-5:45
2l:15-21:45
22:15-22:30
41
86
03
550
312
169
t0tst2024 6:15- I 5:30
l6:00-23:00
23:45-l:15 ( l0/6)
l5l
78
175
218
83
206
10t6t2024 2:45-5:30
6:30-7:30
l0:00-10:30
l7:30-18:45
48
105
216
178
94
247
49s
295
10t7t2024 3:30-5:15
6:15-20:00
95
45
r08
56
t01812024 4:00-4:l 5
5:00-5: I 5
6:l 5- l0:45
254
150lll
368
213lll
10t9t2024 23:30-23:45 96 r38
10n0t2024 4:45-5:15
8:15-9:00
226
206
754
1.016
t0128t2024 l5-15:15 204 222
1012912024 I 8:00- l 9:30 193 207
12t17t2024 8: I 5-8:30 77 39
IX.
(iv)There were no flaring events that met the criteria in $63.670(o)(3) during the
reporting period.
VIII. Delayed Coking Units - S63.655(gXl2)
For purposes of $63.655(g)(12)(i), there were no deviations from the limits at $63.657(a)(l)
during the reporting period. For purposes of $63.655(gX I 2Xiii), there were no double-
quenching events performed during the reporting period.
Maintenance Vents - $63.655(9)(13)
There were no deviations from the limits at 63.655(g)(6Xi) during the reporting period.
Changes in Information Provided in a Notification of Compliance Status (NOCS)
Report - $63.655($(14)
The following table serves as an update to applicability for certain "storage vessels," as
defined within 40 CFR 63.641, at the refinery and classifies each either as a Group I storage
vessel or Group 2 storage vessel. It also serves as updated documentation of regulatory
applicability. This list supersedes previously-identified Group I or Group 2 storage vessel
applicability for the tanks identified below.
Tank ID Groun Number
0085 Groun 2
0086 Group 2
0095 Group I
5088 Groun 2
s090 Grouo 2
s093 Groun I
s098 Group 2
5099 Groun 2
20017 Groun I
2001 8 Group I
20019 Grouo I
20030 Grouo 2
20031 Group 2
20032 Grouo 2
20033 Groun 2
20040 Group 2
30020 Group I
3002 I Groun I
30022 Grouo I
30023 Group I
30024 Groun I
30041 Grouo 2
30042 Group 2
30043 Group 2
30069 Grouo 2
30074 Group 2
30080 Grouo 2
3008 I Grouo 2
30082 Group 2
30091 Grouo I
30092 Group I
30096 Group 1
30097 Grouo I
3sr 10 Group I
40050 Group 2
4005 1 Grouo 2
40052 Group 2
40070 Group 2
40071 Grouo 2
40072 Group 2
40073 Group 2
40075 Grouo I
40076 Group I
401 00 Group I
40n2 Group 2
50078 Grouo I
s0079 Group I
s0l l3 Group 2
5083 Grouo 2
Tank ID Group Number
5084 Group 2
60059 Group
60060 Grouo
60061 Group
60062 Group
60063 Grouo
60077 Group
601 4 Group 2
601 8 Groun 2
80r 5 Group 1
901 6 Group I
901 7 Group I
D6l0l4 Groun 2
If there are any questions regarding this report, please contact Lauren Vander Werffat [phone] or
LVanderWe rff@ c hevron. com.
I certifu, based on information and belief formed after reasonable inquiry, the statements and information
in this document are true, accurate, and complete.
Sincerely,
Troy Tortorich
cc: CERTIFIED MAIL NO 7018 0680 0001 4890 9287
U.S. EPA Region 8 - Montana Office
l0 West l5th Street, Suite 3200
Helena, MT 59626
REVIEWEDInitials:Date: May 1, 2025Compliance Status:OKFile #: 10119 (B2)