DAQ-2025-002466

1
DAQC-431-25
Site ID 10556 (B5)

MEMORANDUM

TO: FILE – CHEVRON PRODUCTS COMPANY MARKETING TERMINAL

THROUGH: Harold Burge, Major Source Compliance Section Manager

FROM: Rob Leishman, Environmental Scientist

DATE: May 6, 2025

SUBJECT: Chevron Products Company (Chevron Marketing), Major, NSPS, Title V, MACT,
Salt Lake County – FRS # UT00000049003500240

INSPECTION TYPE: State Electronic Data Report (SEDR) Review

REVIEW DATE: May 6, 2025

SOURCE LOCATION: North Salt Lake/Davis County

SOURCE CONTACT: Shane Partain – 503-221-7855

APPLICABLE
REGULATIONS: AO DAQE-AN105560017-18 dated May 18, 2018
Only conditions pertaining to the monitoring program will be addressed
in this memorandum.

SOURCE INSPECTION
EVALUATION: With the exception of sources that only monitor for opacity, quarterly
report memoranda will only address the findings of the quarterly report.
Approval Order and Title V permit conditions addressing continuous
emission monitoring requirements will be addressed in Chevron’s
relative accuracy performance specification test review memorandum.

SOURCE REVIEW EVALUATION:

First Quarter 2025
% Monitor Availability (MA) Performance Test Dates
(N/A to Opacity)
Summary of Excess Emissions During Point
Source Operation
Point
Source
Op.
hrs. Channel MA CGA Lin RATA Point
Source Channel Hrs. Limitation
VRU 2208 VOC 100% 02/20/25 12/26/24 VRU VOC 0.00 0 Hrs -

1 8 2

2
Excess Emission Report - Hourly Summary
Point
Source Channel
Startup
&
Shutdown
Control
Equipment
Problems
Process
Problems
Other
Known
Causes
Unknown
Causes
Emission
Limit
VRU VOC 0 0 0 0 0 0 Hrs -

CMS Performance Summary - Hourly Summary
Point
Source Channel Monitor
Malfunction
Non-monitor
Malfunction
QA
Calibrations
Other
Known
Causes
Unknown
Causes
VRU VOC 0 0 1 0 0

Pollutant Concentration
Exceeded Span of CEM
Monitor Outage During
Point Source Operation
Alternate
Sampling CEM Modifications
0 Hours 0 Hours 0 Hours 0 Events

SOURCE INSPECTION
SUMMARY EVALUATION: Chevron Marketing maintains its CEMS as required in R307-170 and 40
CFR 60.13.

CURRENT
RECOMMENDATIONS: All deviations appear to be a result of breakdown or process related
problems that do not warrant issuing a violation.

Chevron Marketing was in compliance during this reporting period. No
further enforcement actions should be taken.

Chevron Marketing’s NSPS monitoring system meets the performance
standards of 40 CFR 60, Appendix B Performance Specifications.

HIGH PRIORITY
VIOLATOR (HPV): No

RECOMMENDATION
FOR NEXT INSPECTION: Check DAS for daily zero and span drift.

ATTACHMENT: Excel spreadsheet review
Chevron Products
Company5531 NW Doane AvePortland OR 97210Tel [phone]
Cell 503-939-1197
[e-mail]
Shane Partain
HSE Field Specialist Portland ORSalt Lake City UTEureka CA
This message and any documents accompanying it are intended for the use of the addressee and may contain information that
Is privileged, confidential and exempt from disclosure under applicable law. If you are not the intended recipient, or the personresponsible for delivering it to the intended recipient, you are hereby notified that any dissemination, distribution or copying of
It, or the taking of any action in reliance on it, is strictly prohibited. If you have received this communication in error, please callUs immediately to arrange for its return to us.
April 24, 2025
Division of Air Quality
Utah State Dept of Env Quality
Attn: Mr Rob Leishman
195 North 1950 West
Salt Lake City, Utah 84114
Director,
Mr Leishman
Enclosed is a copy of the quarterly Excess Emissions Report for the Chevron Salt
Lake City Marketing Terminal. Electronic and editable copies of the UDEQ format EER will be
submitted to you via email at [e-mail]. Please note that due to the use of methane
subtracting analyzers (CEMs) at the terminal, the term VOC used in the report is referring to
non-methane hydrocarbon (NMHC) parameters which were monitored during the quarter. Both
units are IR 8400D methane compensating analyzers.
The serial numbers on the CEMs cabinets are as follows:
Primary VRU (CEM-1) date of installation 5/15/2014 Cabinet SIN is 4303
Backup VRU (CEM-2) date of installation 6/30/20 13 Cabinet S/N is 5235
Upon review of data logging software and therefore to the best of my knowledge. all information
contained in the report is accurate and is a complete record of monitoring related events which
occurred during the reporting period.
If you have any questions regarding this report, please contact me at 503.221.7855
Respectfully,
Shane Partain
OE/HES Specialist
Chevron Marketing EER 1Q2025
Point Source Information Late Expired Cal. Gas Valid Cal. Gas Days Yes No
1 Type Code 100
(Company Information)Type Code Company Manager Company Name AIRS # Phone Number
Environmental
Contact
1 100 Jerry Henderson 03500240 503.221.7714 Shane Partain 503.221.7855
1 100 0 0 0 0
1 Type Code 110
(Point Source Identification)Type Code Point Source
Quarter
1 - 4 Year
Point Source
Operating Hrs. in
Quarter
1 110 1 2025 2208
1 110 0 0 0
1 Type Code 200
(Monitor Identification)Type Code Point Source Channel Manufacturer Model No. Monitor SN Low Span High Span Installation Date
Monitor
Location
1 200 VOC IR Tech 8400 DC 4303 0 2 5/15/2014 Outlet vent
1 200 VOC IR Tech 8400 DC 5235 0 2 6/30/2013 Outlet vent
1 200 0 0 0 0 0 0 1/0/1900 0
1
Type Code310
(Excess Emissions)
SUMMARY REPORT
Type Code Channel
Total Hours of Excess
Emissions
Excess Emissions -
% of Total
Operating Hours
RC 701 Hours -
start
up/Shutdown
RC 702 Hours-
Control Equipment
Problems
RC 703 Hours -
Process Problems
RC 704, 706, 707
Hours -Other Known
Causes
RC 705 Hours -
Unknown
Causes
Emission
Limitation
Emission
Limitation
Units
Emission
Limitation
Averaging
Period
1 TRUE 310 VOC 0 0.00% 0 0 0 0 0 0 Hrs 0
1 310 0 0 0 0 0 0 0 0 0
1 Type Code 300 (CMS
Performance Summary) Type Code Channel
Point Source Operating
Hours
Downtime - % of
Total Operating
Hours
Total CMS
Downtime
RC 721 Hours -
Monitor
Malfunction
RC 722 Hours -
Non-monitor
Malfunction
RC 723 Hours -
QA Calibrations
RC 724 Hours -
Other Known
Causes
RC 725
Hours -
Unknown
Causes
1 TRUE 300 VOC 2208 0.05% 1 0 0 1 0 0
1 300 0 0 0 0 0 0
1
Type Code 250
(Performance Specification
RATA Results)
Type Code Channel
Date of Most Current
RATA
Date of Preceding
RATA
Months Between
RATA's
Units of
Measurement CEM Value Reference Method
Value
Relative
accuracy Pass/ Fail
1 379 Days 250 VOC 12/26/24 12/13/23 9 ppmvw 762.33 1047.77 4.28% Pass
1 379 Days 250 VOC 12/26/24 12/13/23 9 ppmvw 68.89 308.48 3.78% Pass
1 0 Days 250 0 01/00/00 01/00/00 0 0 0 0 0.00% 0
1 Type Code 260
(CGA Results)Type Code Channel Date Audit Point No. Cylinder ID
Cylinder
Expiration Date
Type of
Certification
Units of
Measurement CEM Value Cylinder
Value
Precision
%Pass/ Fail Range - High or
Low
1 Valid Cal. Gas 260 VOC 02/20/25 1 FF16012 04/01/26 NIST 20142559 % 0.52 0.5 9600.00% Pass Low
1 Valid Cal. Gas 260 VOC 02/20/25 1 FF16012 04/01/26 NIST 20142559 % 0.53 0.5 9200.00% Pass Low
1 Valid Cal. Gas 260 VOC 02/20/25 1 FF16012 04/01/26 NIST 20142559 % 1.03 1 10300.00% Pass High
1 Valid Cal. Gas 260 VOC 02/20/25 1 FF16012 04/01/26 NIST 20142559 % 1.02 1 10200.00% Pass High
1 260 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
1 Type Code 270
(Linearity Test Results)Type Code Channel Date Audit Point No. Cylinder ID
Cylinder
Expiration Date
Type of
Certification
Units of
Measurement CEM Value Cylinder
Value
Precision
%Pass/ Fail Range - High or
Low
1 270 0 01/00/00 0 0 01/00/00 0 0 0 0 0.00% 0 0
1 Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code Channel Start Date Start Time End Date End Time Hours
1 0 0 0 1/0/00 0:00 1/0/00 0:00
1
1 None Reported
1 0 TC 220 Hours 0.00 TC 220 Hours 0.00 TC 230 Hours 0.00 Events 0.00 Hours 0.00 Events 0.00 0.00
1 1.00 TC 300 Hours 1.00 FALSE
None Reported None Reported None Reported None Reported None Reported None Reported
Point Source
Point Source
Point Source
Point Source
Point Source
Point Source
None Reported
VRU
0
VRU
VRU
VRU
0
Type Code 550
(Changes in Operation in
Control Equipment When
CEM Data Not Available)
Type Code 500
(Boiler Operating Days
w/o 18 Hours of Data)
Chevron USA Inc
0
Type Code 450
(Data Excluded)
VRU
VRU
0
VRU
0
Type Code 210
(Pollutant Concentration
Exceeded Span of CEM)
Type Code 220
(Monitor Outage
During Point Source Operation)
Type Code 230
(Manual Sample - Alternate
Sampling During Monitor
Outage)
Type Code 240
(CEM Modifications)
Type Code 530
(Excess Emissions During
Emergency Conditions)
VRU
0
VRU
VRU
VRU
0
0
0
Chevron Marketing EER 1Q2025
Relative Accuracy Overview
Point Source Channel
Date of Most
Current
RATA
Date of
Preceding
RATA
Months Between
RATA's
Units
Measured CEM Value Reference Method
Value
Relative
Accuracy Pass/ Fail
VRU VOC 12/26/24 12/13/23 9 ppmvw 762.33 1047.77 4.28% Pass
VRU VOC 12/26/24 12/13/23 9 ppmvw 68.89 308.48 3.78% Pass
*
NSPS CGA First 2025
Audit Gas Ranges Audit Gas Ranges
AP1 Low AP2 Low AP1 High AP2 High
VRU VOC 2/20/25 2 0.5 0.4 to 0.6
VRU VOC 2/20/25 2 0.5 0.4 to 0.6
VRU VOC 2/20/25 2 1 0.4 to 0.6
VRU VOC 2/20/25 2 1 0.4 to 0.6
Point Source Channel Audit Date Low Span Audit Gas Used High Span Audit Gas Used
Chevron Marketing EER 1Q2025
Monitoring Information TC 210, 230, & 240
Type Code 210
(Pollutant Concentration Exceeded Span of CEM) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)0 0
Grand Total 0 0
*
Type Code 230
(Manual Sample - Alternate Sampling During Monitor Outage) - 500 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)0 0
Grand Total 0 0
*
Type Code 240
(CEM Modifications) - 100 (All)
*
Count of Channel Column Labels
Row Labels (blank) Grand Total
(blank)
(blank)
Grand Total
Chevron Marketing EER 1Q2025
Type Code 220
(Monitor Outage During Point Source Operation) - 600 (All)
*
Sum of Hours Column Labels
Row Labels (blank) Grand Total
(blank)
(blank)
0 0
Grand Total 0 0
Chevron Marketing EER 1Q2025
VOC/THC *
VOC/THC Type Code 460 (VOC/THC) - 6000 (All)
VOC/THC *
VOC/THC Count of Magnitude of Emissions Column Labels
VOC/THC Row Labels Grand Total
VOC/THC Grand Total
Chevron Marketing EER 1Q2025
Type Code 500
Before February 28, 2005 (Boiler Operating Days w/o 18 Hours of
Data) After February 28, 2005 (90% Operating Hours For each 30 BOD)
- 500
(All)
*
Count of Channel Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 510
(F-factor, Equations & Conversion Factors) - 500 (All)
Count of F-factor Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 520
(Minimum Data Not
Obtained <22/30 BODs) - 500
(All)
Count of Channel Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 530
(Excess Emissions During Emergency Conditions) - 500 (All)
Count of Date Column Labels
Row Labels Grand Total
Grand Total
*
Type Code 540
(Fuel Pre-treatment Credit SO2) - 500 (All)
Count of Date Column Labels
Row Labels Grand Total
Grand Total
*
TypeCode 550
(Changes in Operation in Control Equipment When CEM Data Not
Available) - 500
(All)
Column Labels
Row Labels Grand Total
Grand Total