DAQ-2025-000436

ClEvlonv Lauren Vander Werff
Environmental Team Lead
Salt Lakc Refinery
Chevron Products Company
685 South Chevron Way
North Salt Lake, UT 84054
Tel [phone]
Fax [phone]
May 8,2024
Certified Mail: 7021 272000014083 6531
Mr. Bryce Bird, Director ([e-mail])
Utah Division of Air Quality
195 North 1950 West
P.O. Box 144820
Salt Lake city, Utah 84114-4820
Attn: Joe Rockwell
2024 T ank Seal Inspections
Dear Mr. Bird,
UTAH DEPABruENT OF
ENVIRONMENTAL QUALITY
MAY 1 5 2l,24
DIVISION OF AIH QUALITV
In compliance with 40 CFR 60.1l5b(bx2) and (4), Chevron submits the results of the annual primary and
secondary tank seal inspections conducted in2024. The seal gap measurements are included in
Attachment l.
The table below lists tanks where a requirement in $60.1l3b(b) was not met, the repair date or date of
emptying, and the nature of repair.
Please contact Derek Rees at [phone] or [e-mail] if you have any questions.
Sincerely,
Tank Date of
Inspection
Date of Repair
or Emptying of
Tank
Failure Cause Nature of Repair
20015 April,22 Expected
lune 6,2023
Exceeded maximum
gap width and area
per diameter
limitations on primary
seal
This tank will be emptied before
the 45-day deadline. Repairs will
be made once the tank is empty.
Lauren Vander Werff
REVIEWEDInitials:Date: August 16, 2024Compliance Status:OKFile #: 10119 (B2)
Attachment l:2024 Tank Seal Gap Measurements
Attachment 1
Seal Gap Measurements lnformation Specified in 40 CFR 50.11sb(bx2)
Tank Number Date
Measured Seal Gap Width
(ln)
€ag Length
linl
GapArea
lnz
Total Area
lln2l
MarWidth
linl
Gap (in'perft
diamets]
T 50078 4/L7/2024
Primary 0.5 L2 6
62 7 0.77
Primary o.25 6 1.5
Primary 0.25 6 1.5
Primarv 0.75 8 6
Primary 0.5 15 8
Primarv 1 18 18
Primary 0.5 6 3
Primary 0.5 35 18
Secondary none
T 60077 4177/2024 Primary none
Secondarv none
T 40073 4/78/2024
Primarv 0.25 6 1.5
11 0.s0 0.14
Primarv 0.25 10 2.5
Primary o.2s 10 2.5
Primarv 0.25 6 1.5
Primary 0.5 5 3
Secondary none
f $075 4/78/2024 Primarv none 6 0.0125 0.125 0.01 0.08
Secondary none
T 2171 412212024
Primary 0.5 8 4 5 0.s0 0.44Primary0.5 6 1
Secondary none
T 3350 4/2212024
Primary o.25 18 4.5
31.5 0.50 0.79
Primary 0.5 6 3
Primarv 0.5 72 6
Primary 0.5 72 6
Primary 0.5 12 6
Primary 0.5 t2 5
Secondary none
T 15703 412212024
Primarv o.25 18 4.5
28 0.50 0.51
Primary 0.5 8 4
Primary 0.25 18 4.5
Primarv 0.5 L2 5
Primary 0.5 18 9
Secondary none
T 15104 412212024 Primarv none
Secondary none
T 25708 4/2212024
Primarv 0.2s 2 0.5 0.75 0.50 0.01Primary0.25 1 0.25
Secondary none
T 25109 4122/2024 Primary none
Seconday none
T 30107 4123/2024 Primary none
Secondary none
T 35770 4/1712024
Primary 0.25 4 1
21.75 0.50 0.25
Primarv 0.25 3 0.075
Primary 0.5 t2 5
Primary 0.25 3 0.075
Primarv 0.25 8 2
Page 1 of 5
Attachment 1
Seal Gap Measurements lnformation Specified in 40 CFR 60.115b(bx2)
Tank Number Date
lieasured Seal Gap Width
(inl
€ap Length
{ial
Gap666
ln2
Total Area
fin2l
MaxWldth
linl
Gap (in'pel ft
diameter)
Primary 0.5 24 L2
Secondary none
T 90777 4117/2024 Primary 0.5 4 t 't 0.50 0.02
Secondarv none
T 90776 4/1712024 Primary none
Secondarv none
r 5038 4he/2024 Primary 0.5 18 9 9 0.50 0.30
Secondary none
T 7539 4lt9/2024
Primary 0.5 20 10
L2 0.50 0.33Primarv0.25 4 1
Primarv 0.2s 4 7
Secondarv none
T 20015 4122/2024
Primary 1 5 5
161 2.00 2.93
Primary L 18 18
Primary 7 36 35
Primary 7 24 24
Primary 1.5 18 27
Primary 0.5 10 5
Primary 2 20 40
Primary 0.5 72 6
Seconda rv none
T 20016 417912024
Primary 1 24 24
131 1.00 2.38
Primarv 1 18 18
Primary 0.5 18 9
Primary 0.5 t2 6
Primary 0.5 24 t2
Primary L 9 9
Primary 0.5 10 5
Primary L 36 35
PrimarV 0.5 24 72
Secondary none
T 7577 4/2212024
Primarv 0.25 72 3
8 0.50 0.35Primarv0.25 8 2
Primary 0.5 6 3
Secondarv none
f 7572 4122/2024
Primarv 0.25 6 1.5
13 0.50 0.s9
Primary 0.5 10 5
Primary 0.5 8 4
Primary 0.2s 6 1.5
Primary 0.25 4 1
Secondary none
T 7513 412212024
Primary 0.5 5 3
37 1.00 1.00
Primary 0.5 10 5
Primary 0.5 18 9
Primary 0.5 24 t2
Primarv t 8 8
Secondary none
T 20017 4/1912024 Primarv none 0.2s 4 1 0.2s 0.02
Secondary none
Page 2 of 5
Attachment 1
Seal Gap Measurements lnformation Specified in 40 CFR 60.115b(bx2)
Tank Number : Date
Measured Seal Gap Width
(inl
Gap teqth
{inl
Gap Area
in?
Total Area
(in2l
MaxW'idth
{inl
Gap (in2 per ft
dlameterl
T 20018 4/1912024
Primarv 0.5 10 5
t7 0.50 0.31
Primarv 0.2s t2 3
Primarv 0.5 8 4
Primarv 0.25 10 2.5
Primary 0.2s 10 2.5
Seconda rv none
T 20019 4ltel2024
Primarv 0.5 72 6
26 1.00 o.47Primary77212
Primary 0.5 6 3
Primary 0.5 10 5
Secondary none
T 30020 4/22/2024
Primary 0.5 10 5 9 0.50 0.13Primary0.5 8 4
Seconda ry none
T 70094 4lt8l2024 Primary 0.25 3 o.75 o.75 0.25 0.01
Secondarv none
f 70095 4lt8/2024
Primary L 12 t2
22 1.00 0.55Primary0.5 9 4.5
Primarv 0.25 5 1.5
Primarv L 4 4
Secondary none
T 30021 4lt9/2024
Primary 0.5 5 3
10 0.50 0.15Primaryo.25 72 3
Primary 0.5 4 2
Primary 0.5 4 2
Seconday none
T 30022 4/t912024
Primary o.2s 4 t 3 0.25 0.04Primary0.25 8 2
Seconda rv none
T 30023 41L912024
Primary 0.25 6 1.5
7 0.s0 0.10Primarv0.5 8 4
Primary 0.25 5 1.5
Secondary none
T 30024 4/7s12024
Primarv o.25 4 2 0.25 0.02Primary0.125 8 I
Secondary none
T 600s9 417612024 Primary none
Secondarv none
T 60060 4/16/2024 Primarv none
Secondary none
T 40076 4h812024
Primarv 0.25 6 1.5
15.5 1.00 0.20Primary0.25 8 2
Primary 7 8 8
Primary 0.5 8 A
Seconda rv none
T 30096 41t812024 Primarv o.2s 9 2.25 2.25 o.25 0.03
Secondarv none
T 30097 417812024 Primary 0.25 2 0.5 0.5 0.25 0.08
Secondary none
Page 3 of 5
Seal Gap Measurements
Attachment 1
lnformation Specified in 40 CFR 60.115b(b[2)
Tank Number Date
Measured Seal Gap Width
(inl
Gap leltstrr
{ln}
GapAraa
inl
Total Area
lin2l
MaxWidth
linl
Gap {in'pe:ft
diamete*
T t$100 4h8/2024
Primarv 0.5 5 3
29.25 1.00 0.04
Primary 1 72 t2
Primary 0.5 8 4
Primarv 0.25 6 1.5
Primary 0.25 7 1.75
Primarv 0.5 12 6
Primary 0.5 2 7
Secondary none
T 15093 4lt8/2024
Primarv o.25 10 2.s
77.5 1.00 1.55
Primary 0.75 24 18
Primary 0.25 72 3
Primary 0.5 6 3
Primarv 0.75 12 9
Primary 7 36 35
Primary 0.5 t2 5
Secon da ry none
t 60062 417612024
Primary 0.5 4 2
8 1.00 0.14Primary0.5 4 2
Primary 7 8 8
Primary 0.5 4 2
Secondary none
T 60063 4h6/2024
Primary 0.25 6 1.5
10.5 0.50 0.10Primary0.25 5 1.5
Primary 0.25 6 1.5
Primary 0.5 72 6
Secondary none
T 80115 4177 12024
Primary 0.25 6 1.5
28.25 0.75 o.24
Primary 0.5 72 6
PrimarV 0.5 10 5
Primarv 0.5 9 4.5
Primary 0.75 L2 9
Primarv 0.25 9 2.25
Secondary none
T 30092 4hel2024
Primary t 10 10 15 1.00 o.22Primarv0.5 10 5
Seconda rv none
T 30091 4/79/2024 Primary none
Seconda ry none
T 50079 4/7812024 Primary none
Secondary none
T 60778 4/1612024
Primarv 7 4 4
24.75 1.00 o.27
Primarv 0.5 72 6
Primary 0.25 4 1
Primarv 0.5 6 3
Primarv 0.25 4 1
Primarv 0.5 4 2
Primary o.25 3 o.75
Primary 0.75 4 3
Primarv 1 4 4
Page 4 of 5
Attachment 1
Sea! Gap Measurements lnformation Specified in tO CFR 60.115b(bx2l
AffiEPARTMENT o.E
DIVISION OF AIR OUALITY
MAY 1 5 2024
Page 5 of 5
REVIEWEDInitials:Date: August 16, 2024Compliance Status:OKFile #: 10119 (B2)