DAQ-2024-011330

i I lr. 333 W Center Street . North Salt Lake Utah 84054 . 801.296.7700. www.bigwestoit.corn
July 30,2024
CERTIFIED MAIL
RETIIRN RECETPT NO. 9s89 0710 5270 1318 3714 38
Bryce Bird, Director
Utah Division of Air Quality
195 North 1950 West
P.O. Box 144820
Salt Lake ciry, uT 84114-4820
RE: 40 CFR 60 Subparts J and Ja,
Dear Mr. Bird,
0'rnn orpnRTi\.4i r'JT oF
DIVISION OF AiR Q1JAL ITY
l't Semiannual Compliance Report of 2024
Attached is Big West Oil, LLC's (BWO) l't half of 2024 semi-annual report for 40 CFR 60 Subparts J
and Ja, as required by 40 CFR 60. 107(c) and 60. l08a(d) for the refinery located in North Salt Lake, Utah.
Equipment identified in this report is regulated by Utah Depaftment of Environmental Quality (UDEQ)
Approval Order DAQE-AN101220081-24,dated May 6, 2024.This report addresses operations from
January 1 through June 30, 2024, for the following sources:
. All affbcted refinery flares, consisting of the South Flare and West Flare. These sources are
subject to NSPS Subpart Ja in accordance with Utah PMro and PMz s State Implementation Plan
(SIP) Sections IX.H.l .g.v.A and IX.H.1 1 .g.v.A, respectively.o The refinery fuel gas system is subject to NSPS Subpart Ja for HzS in accordance with Utah
PMro and PMz s SIP Sections IX.H.l.g.ii.A and IX.H.l l.g.ii.A, respectively.. The Millisecond Catalyic Cracking Unit (MSCC) Regenerator is subject to NSPS Subpart J for
all regulated pollutants (CO, SOz, and PM) per the 2013 BWO Consent Decree.
Refinery Flares:
The South and West Flares serve all process units in the refinery and are subject to 40 CFR 60 Subpart Ja.
Each flare is subject to the following Work Practice Standards:
r $60. 1 03a(h): 162 ppm HzS on a 3-hour rolling average;. S60.103a(c)(1Xi): 500 lb SO2 emitted from aflare in any24-hour period;o $60. l03a(cX l Xii): Discharge to a flare in excess of 500,000 scf above the baseline in any Z4-hour
period.
This report addresses the standards at $60.103a(c)(1)(i) and (ii). During the reporting period, there was
one event that required the completion of a Root Cause Analysis and Corrective Actions Analysis per
$60.103(c)(1)(i) or (ii). Details of any exceedances of the HzS 3-hour rolling average limit are included in
the quarterly State Electronic Data Reports (SEDR) submitted to UDEQ for purposes of UAC R307- 170-
9 and are therefore not addressed in this report. Details of any exceedances of the emissions limits at
60.l02a(g)( I )(ii) are included in the quarterly SEDRs submitted to UDEQ for purposes of UAC R307-
170-9 and, therefore, are not addressed in this report.
B-2-10122
Amine Unit/Refinery FuelGas System:
BWO's Amine System/Refinery Fuel Gas System is subject to requirements within 40 CFR 60 Subpart
Ja. In accordance with Utah PMz s SIP Section IX.H.1 l(g)(ii)(A), BWO shall comply with specified
applicable requirements within 40 CFR 60 Subpart Ja for HzS content within refinery fuel gas. This
includes the following limits (within 60.102) and work practice standards (within 60.103):
$60.102a(g)(1)(ii): 162 ppmvd on a 3-hour rolling average basis;
$60.102a(g)(1Xii): 60 ppmvd on a 365-day rolling average basis (same citation as 3-hour rolling
average limit).
$60.103a(c)(2): each exceedance of the 162 ppmvd HzS limit if the SO2 discharge to the
atmosphere is 227 kg (500 lb) greater than the amount that would have been emitted if the
emissions limits had been met during one or more consecutive periods of excess emissions or any
24-hour period, whichever is shorter.
MSCC Regenerator:
BWO operates a MSCC Regenerator, which is subject to 40 CFR 60 Subpart J for PM, CO, and SOz.
The MSCC is subject to the following emissions limits and work practice standards:o $60.102(a)(1): 1.0 lb PM/1000-lb coke burn;o $60.102(a)(2): 30%o opacity on a six-minute average, except for one 6-minute reading per hour;o $60. I 03(a): 500 ppmvd CO on a one-hour average;
. $60. l0a@)( I ): 50 ppmvd SOz on a 7 -day rolling average;o $60.104(d): A minimum of 22valid days of data shall be obtained per 30 rolling successive
calendar days when complying with $60.104(bX1).o $60.105(a)( 13): Additional monitoring requirements if insufficient valid monitoring data is
available for purposes of $60. 1 0 (d).
This report addresses any deviations for the SOz limit at $60.104(b)( I ) and to the monitoring work
practice standards at $60.104(d) and $60.105(a)(13).
Evaluation for compliance with PM limit established in $60.102(a)(1) is determined via performance
testing. This performance test was conducted on December 15,2023, and was included in the
corresponding Consent Decree (CD) report submitted to UDEQ and EPA. Details of any exceedances of
the limits at $60.102(a)(2), $60.103(a), and $60.104(b)(1) are included in quarterly SEDRs submitted to
UDEQ for purposes of UAC R307-170-9 and are excluded from this report unless noted otherwise.
Alignment with State Ouarterllz Reports:
Monitoring system performance for all regulated continuous emission monitoring systems (CEMS) and
continuous opacity monitoring systems (COMS) for the following sources and pollutants are reported per
$60.7(c) and R307-170-9 as part of the SEDRs submitted to UDEQ:o South Flare (HzS, Total Reduced Sulfur);o West Flare (HzS, Total Reduced Sulfur);. MSCC Regenerator (SO2, CO, Oz, and Opacity);. Amine System/Refinery Fuel Gas System (H2S).
These SEDR reports also address all CEMS and COMS downtime, cylinder gas audits (CGAs), and
relative accuracy test audits (RATAs). BWO has submitted a report for the first quarter of 2024 and will
submit the second quarter 2024 report on or before luly 30,2024.
a
a
Certifi cation Statement:
I certifo that this information was prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submitted. Based
on my directions and my inquiry of the person(s) who manage the system, or the person(s) directly
responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief true, accurate, and complete.
#rb
Please call Brady Miller at [phone] should any questions arise.
Sincerely,
Brady Miller
Environmental Engineer
CC: Director, Air and Toxics Technical Enforcement Program
Office of Enforcement, Compliance and Environmental Justice
MailCode 8ENF-AT
1595 Wynkoop Street
Denver, CO 80202-1129
CERTIFIED MAIL
RETURN RECETPT NO. 9s89 0710 5270 1318 371278
Alec Klinghoffer
Refinery Manager
Attachment One:
40 CFR 60 Subpart Ja: Summary Report
40 CFR 60 Subpart Ja Summary Report
40 CFR 60 Subpart Ja Flare RCA and CAA Summary per $$60.108a(d)(5) and (c)(6)
Section l: Event Description and Release Information
Complete Section I lor each 24-hcrur o€nod of'drsc
Reoortins Element Resnonse
Emission Source (flare)West Flare
Description of flaring event
40 CFR 60.108a(cX6Xi)
Butamer outage
Incident Start Date
40 CFR 60. l08a(c)(6Xii
513U2024
Incident Staft Time
(24-hour clock)
40 CFR 60. I 08a(c)(6)(ii
0l :00
Incident End Date
40 CFR 60.108a(cX6Xii)
s13112024
Incident End Time
(24-hour clock)
40 CFR 60. I 08a(cX6Xii
23:00
If Planned Startup/Shutdown,
were Flare Management Plan
(FMP) procedures followed?
(YesAllo)
(lf incident was due to a planned
startup/shutdorvn and FMP procedures
were followed, no Root Cause Analysis
or Corrective Action description is
necessary, do not complete Sections 2
and 3 of this report form.)
40 CFR 60. I 08a(c)(6Xxi)
N/A - This was not a planned shutdown.
If incident was not due to planned
startup or shutdown, provide a
brief explanation of event.
40 CFR 60.108a(c)(6)(xi)
The Butamer stabilizer tower level was reading incorrectly,
causing its relief valve to lift several times. Operations attempted
to get the level to start working without success, which eventually
led to the unit beine shut down.
Cumulative quantity of gas
discharged during this 24-hour
period (scf), or if duration
exceeds 24 hours, the quantity
sent to flare for each 24-hour
period.
40 CFR 60.108a(c)(6) and (6)(iii)
24,1'15,003 scf
Was the cumulative quantity of
gas discharged >500,000 scfover
baseline during 24-hour
period(s)? (Yes/Irtro)
Primary South Flare
Baseline - 323,000 scf/24-hr.
RCA Trigger : 823,000 scf/24-hr
Primary West Flare
Baseline - 323,000 sc//24-hr
RCA Trigger : 823,000 sc//24-hr
See NSPS Ja FMP for Alt. Baselines.
40 CFR 60. I 08a(c)(6)&(6)(iii)
Yes
; -i ri;,; i ;it.r',rr . .;'rl it r
*Or'__
I J : "i {t.1, )'|:i.'}:i J7i.l (,llAL ll-YI 'r ------- - Iiil
Ii:l:i Irlilr
I t-.., -- ---- J
' i,t,.1,1,1 ;6rl Or Aili Olr/rl ITY
40 CFR 60 Subpart Ja Summary Report
Renortins Element Resnonse
Did SOz emissions exceed 500 lb
during this 24-hour period?
40 CFR 60. 108a(c)(6)(iv)
40 CFR 60. l08a(cX6)(vii)
No
If yes:
List cumulative quantity of
SOz emissions during each24-
hour period (lb, assuming99%
sulfur conversion):
40 CFR 60. l08a(cX6Xvii)
N/A - No exceedances during the reporting period
AND
List cumulative quantity of
HzS emissions during each24-
hour period (lb, assuming 1%
uncombusted):
40 CFR 60. l08a(c)(6)(vii)
N/A - No exceedances during the reporting period
AND
List total sulfur concentration
(ppmvd) or HzS and estimated
total sulfur in fuel during each
24-hour period that exceeded
that threshold (ppmv/ppmv):
40 CFR 60. I 08a(cX6)(iv)
N/A - No exceedances during the reporting period
Describe steps taken to limit the
emissions during the discharge
40 CFR 60. l08a(cX6Xviii)
Operations followed the unit's SSM plan.
Section 2: Root Cause Analysis - 40 CFR 60.108a(c)(6)(ix)
Com Section 2 within 4 o nng evenl
Reportins Element Response
Description of root cause analysis The Butamer stabilizer tower level was reading incorrectly,
causing its relief valve to lift several times. Operations attempted
to get the level to start working without success, which eventually
led to the unit beins shut down.
Was cause same as that identified
in a previous flaring incident?
(YesA.lo)
No
Section 3: Corrective Action Analysis - 40 CFR 60.108a(c)(6)(x)
Com Section 3 within 45 days ol t rng event
Renortins Element Response
Description of corrective
action(s) completed within the 45
davs followins the discharse
Replace level transmitter on stabilizer tower.
For corrective action(s) not
already completed, a description
of proposed corrective action(s), a
schedule for implementation,
including proposed
commencement and completion
dates
N/A - No further corrective actions are required.
Attachment Two:
40 CFR 60 Subpart J: Summary Report
40 CFR 60 Subpart J Summary Report
Section 1: Excess Emissions Event Description and Corrective Action - 40 CFR 60.107(c)(3)
For each 7-day period during which an exceedance has occurred as defined in 40 CFR 60.1Oa(c)(1)(i)
NOTE: Any exceedance that requires repofting in accordance with 40 CFR 60.107(3)(c)(i)-(iii) is
reported in the State Electronic Data Reports as identified in the cover letter, but for clarification purposes
is also identified here.
Section 2: Reporting Requirements for SOz Continuous Emissions Monitoring Systems - 40 CFR
60.107(c)(a)
i.e.. 50 pomv SOz tiom the MSCC Reqenerator on a 7-dav rollins averaqe basis
Reportins Element Response
The date that the exceedance
occurred;
40 CFR 60.107(c)(3)(i)
N/A - No exceedances during the reporting period.
An explanation of the
exceedance;
40 CFR 60.107(cX3Xii)
N/A - No exceedances during the reporting period.
Whether the exceedance was
concurrent with a startup,
shutdown, or malfunction of the
fluid catalytic cracking unit or
control system; and
40 CFR 60. I 07(c)(3Xiii)
N/A - No exceedances during the reporting period.
A description of the corrective
action taken, if any.
40 CFR 60.107(cX3Xiv)
N/A - No exceedances during the reporting period.
ect to 40 CFR 60.104(b)( I e 50 v SOz from the MSCC
Reoortine Element Resoonse/Aool icabilitv
The dates for which and brief
explanations as to why fewer than
I 8 valid hours of data were
obtained for the inlet continuous
monitoring system;
40 CFR 60.107(c)(4)(i)
Not applicable. BWO is subject to the 50 ppmv SOz limit and does
not utilize an inlet continuous monitoring system.
The dates for which and brief
explanations as to why fewer than
I 8 valid hours of data were
obtained for the outlet continuous
monitoring system;
40 CFR 60.107(cX4Xii)
See submitted SEDRs as identified in the cover letter.
Identification of times when
hourly averages have been
obtained based on manual
sampling methods;
40 CFR 60.107(cX4Xiii)
See submitted SEDRs as identified in the cover letter.
Identification of the times when
the pollutant concentration
exceeded full span ofthe
continuous monitoring system;
and
40 CFR 60.107(cX4Xiv)
See submitted SEDRs as identified in the cover letter.
40 CFR 60 Subpart J Summary Report
Reportine Element Resoonse/Aonl icabi litv
Description of any modifications
to the continuous monitoring
system that could affect the
ability of the continuous
monitoring system to comply
with Performance Specifications
2or3.
40 CFR 60.107(cX4Xv)
No modifications were made during the reporting period.
Results of daily drift tests and
quarterly accuracy assessments as
required under appendix F,
Procedure l.
40 CFR 60.107(cX4Xvi)
See Attachment 3 for all daily drift checks completed during
reporting period. Results of quarterly/annual accuracy assessments
are included in the submitted SEDRs as identified in the cover
letter.
Section 3: Reporting Requirements for Sources Subject to Valid Data Requirement at 40 CFR
60.1 - 40 CFR 60.107(c &d
Renortins Element Response
Any 30-day period in which the
minimum data requirements
specified in $60.104(d) are not
obtained. (i.e., any 30-day
periods without 22valid days of
data per 30 rolling successive
calendar days period).
40 CFR 60. I 07(c)(2)
No deviations from work practice standard during reporting period.
Section 4: Evaluation of Changes to SOz Control System during CEMS Downtime- 40 CFR
60.r07(d
Renortins Element Response
For any periods for which sulfur
oxides emissions data are not
available, the owner or operator
of the affected facility shall
submit a signed statement
indicating if any changes were
made in operation of the emission
control system during the period
of data unavailability which could
affect the ability of the system to
meet the applicable emission
limit. Operations of the control
system and affected facility
during periods of data
unavailability are to be compared
with operation of the control
system and affected facility
before and following the period
of data unavailability.
40 cFR 60. I 07(d)
No changes were made in operation of the emission control system
during the periods of data unavailability identified within the State
Electronic Data Reports submiued to UDEQ. See cover letter for
certification.
Attachment Three:
Results of all daily Drift Checks completed during reporting period for MSCC Regenerator
SOz CEMS
MSCC Regenerator SO2 CEMS
Daily Calibration Drift Check Results
\nalvzer: AT-178C
Date SO, Zero Time
Zero Cylinder
Value
(PPM SOr)
Zero Result
(PPM SO2)
Zeto
Difference
loA Errorl
SO2 Span Timc
Span Cylinder
Value
(PPM SOrl
Span Result
(PPM SO2)
Span
Difference
l%Errorl
11112024 5:'18 AM 0.00 0.00 0.00o/o 5:23 AM 83.59 84.14 0.36%
1t2t2024 5:18 AM 0.00 0.00 0.00o/o 5:23 AM 83.59 83.95 0.24o/o
11312024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 83.90 0.21o/o
114t2024 5:'18 AM 0.00 0.00 0.00%5:23 AM 83.5S 83.03 -0.37o/o
1t4t2024 8:16 AM 0.00 1.14 0.57%8:18 AM 83_59 82.55 -O.52o/o
115t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 83.16 -o.29y.
1t6t2024 5:18 AM 0.00 0.00 0.00o/o 5:23 AM 83.59 84.08 0.33%
1nt2024 5:18 AM 0.00 0.00 0.00o/o 5:23 AM 83.59 83.29 -0.20y"
118t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.5S 84.85 o.84%
1t9t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 85.73 '|..430/,
1t10t2024 5:18 AM 0.00 0.99 0.66%5:22 AM 83.59 86.58 1.990/o
1t1112024 5: 18 AM 0.00 2.56 1 .71o/o 5:23 AM 83.59 B9.75 4.11%
1t11t2024 8:49 AM 0.00 0.00 0.00%8:55 AM 83.59 82.76 -O.41o/.
1t12t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 84.24 0.43%
111312024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 84.69 o.73%
111412024 5:18 AM 0.00 0.60 0.40o/o 5:23 AM 83.59 85.80 1.48o/o
1t15t2024 5:18 AM 0.00 0.60 0.40o/o 5:23 AM 83.59 85.07 0.990/o
1t16t2024 5: 18 AM 0.00 0.00 0.00o/o 5:23 AM 83.59 84.42 0.55%
111712024 5:18 AM 0.00 0.68 0.45%5:23 AM 83.59 85.81 1.48Yo
1t18t2024 5:18 AM 0.00 0.36 O.24Yo 5:23 AM 83.59 86.75 2.1Oo/"
1t19t2024 5:'18 AM 0.00 0.00 0.00%5:23 AM 83.59 82.95 -0.43%
1t20t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 80.2S -2.20y"
112112024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 81.56 1.35o/o
1122t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 80.85 -1.8304
1t23t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 80.28 -2.20y.
112412024 5: 18 AM 0.00 0.00 0.00%5:23 AM 83.59 77.85 -3.83%
1124t2024 2:16 PM 0.00 0.00 0.00olo 2:18 PM 83.59 42.87 -0.36%
'U25t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 82.76 -0.55%
1t26t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.s9 80.29 -2.2Oo/"
1127t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.59 80.75 1.89%
1128t2024 5:18 AM 0.00 0.00 0.00%5:23 AM 83.5S 81.38 1.47%
1129t2024 5:8AM 0.00 0.00 0.00%5:23 AM 83.59 81 .51 1.39o/.
'13012024 5:8AM 0.00 0.00 0.00%5:23 AM 83.59 80.83 1.84o/o
1t31t2024 5:8AM 0.00 0.00 0.00o/o 5:22 AM 83.59 80.58 -2.0Oo/o
2t1t2024 5:8AM 0.00 0.00 0.00o/o 5:22 AM 83.59 79.96 -2.42o/o
2t2t2024 5:BAM 0.00 0.00 0.00o/o 5:22 AM 83.59 80.08 -2.34Yo
21312024 5:8AM 0.00 0.00 0.00%5:22 AM 83.59 80.82 1.84Yo
21412024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.59 80.85 1.83%
2t5t2024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.5S 81.40 1.46%
2t612024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.59 82.03 1.O4o/.
217t2024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.59 83.03 -0.37o/o
2t812024 5:18 AM 0.00 0.00 0.00o/o 5:22 AM 83.sS 81.84 1.17Yo
2t8t2024 8:22 AM 0.00 0.41 O.21o/o B:24 AM 83.59 81.54 1.03yo
2t9t2024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.59 83.26 -0.22%
2t10t2024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.59 82.48 -O.744/"
2t1112024 5:18 AM 0.00 0.00 0.00%5:22 AM 83.59 83.58 -0.010h
2t12t2024 5:18 AM 0.00 1.29 0.86%5:22 AM 83.59 84.37 0.52o/o
211312024 5: 18 AM 0.00 2.52 1.680/o 5:22 AM 83.59 86.61 2.01o/o
2t14t2024 5:20 AM 0.00 3.69 2.460/o 5:22 AM 83.59 86.56 1.SB%
2115t2024 5:20 AM 0.00 6.96 4.640/o 5:23 AM 83.59 90.72 4.75%
2t16t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.10 85.98 -0.08%
2117t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.77 O.45o/o
Page 1 of 4
\nalvzer: AT-178C
Date SO2 Zero Time
Zero Cylinder
Value
(PPM SOr)
Zero Result
(PPM SOr)
Zero
Difference
l%Erorl
iO, Span Time
Span Cylinder
Value
(PPM SO,)
Span Result
(PPM SOr)
Span
Difference
l% Errorl
2t18t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.17 0.05%
2t19t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.98 1.25o/o
2t20t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.23 0.75o/o
212112024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.64 0.36%
2t2212024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.1 0 85.49 -0.41y.
2t22t2024 8:21 AM 0.00 0.08 0.04o/o 8:24 AM 86.10 87.51 0.70o/o
2t23t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 82.69 -2.270/
2t24t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 83.59 -'t.67%
212512024 5:20 AM 0_00 0.00 0.00%5:23 AM 86.10 83.48 -1-75o/.
2t26t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.'10 82.49 -2.410h
2t27t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 83.91 1.460/"
2128t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.05 1.360/o
212912024 5:20 AM 0.00 0.98 0.65%5:23 AM 86.10 85.'11 -0.66%
2t29t2024 8:49 AM 0.00 0.00 0.00%B:55 AM 86.10 81.40 -2.35%
3t112024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.10 83.04 -2.O40/o
3t2t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 82.21 -2.59Yo
3t3t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.'10 85.66 -0.30%
314t2024 5:20 AM 0.00 1.25 0.83%5:23 AM 86.'10 83.54 1.71o/"
31512024 5:20 AM 0.00 1.62 1.0804 5:23 AM 86.10 84.S3 -0.78o/o
316t2024 5:20 AM 0.00 3.00 2.O0o/o 5:23 AM 86.10 85.18 -0.610/o
3t7t2024 5:20 AM 0.00 3.30 2.20o/o 5:23 AM 86.10 86.54 0.30%
3t7t2024 7:46 AM 0.00 0.00 0.00%7:55 AM 86.10 82.45 -1.820/0
31812024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 82.40 -2.47o/"
3t9t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.'10 83.67 1.620/o
3t10t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.93 -O.78o/"
311112024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 83.45 1.77o/o
311212024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.22 o.75%
3t13t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.78 O.460/"
3t14t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.94 -0.77%
3t't5t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86 0 84.31 1.19o/"
3116t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.0 84.63 -0.98%
3t17t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 83.46 1.76%
311812024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 83.71 1.600/.
311912024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 84.55 1.03Yo
3t20t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 84.70 -0.940k
3t21t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 83.53 1 .71o/"
3t21t2024 8:50 AM 0.00 0.00 0.00o/o 8:52 AM 86.0 87.27 0.58%
312212024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 84.65 -O.97Y"
3t23t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.0 85.18 -0.61%
312412024 5:20 AM 0.00 0.00 0.00%5:23 AM 86 0 83.44 1.77yo
3t2st2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86 U 84.16 1.29o/o
3t26t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86 0 83.25 1.90%
312712024 5:20 AM 0.00 0.00 0.00%5:23 AM 86 0 82.30 -2.54o/"
312812024 5:20 AM 0.00 0.00 0.00%5:23 AM 86 0 85.01 -O.73o/o
3129t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.38 -1.15o/o
3t30t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 83.84 '1.50%
3t31t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.'10 82.63 -232%
4t1t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 82.96 -2.10o/"
4t2t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 82.43 -2.44o/o
4t3t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.1 0 82.15 -2.630/0
41412024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.1 0 82.90 -2.13o/o
41412024 8:01 AM 0.00 0.00 0.00%8:03 AM 86.10 87.94 O.92o/o
4t5t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86. t0 85.44 -0.44o/^
4t6t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.10 84.41 1.13%
4t7 t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 85.26 -0.56%
Page 2 of 4
{nalvzer: AT-178C
Date SO2 Zero Time
Zero Cylinder
Value
(PPM SO,)
Zero Result
(PPM SOrl
Zero
Difference
l%Errorl
SO, Span Time
Span Cylinder
Value
(PPM SOr)
Span Result
(PPM SO2)
Span
Difference
l%Errorl
41812024 5:20 AM 0.00 0.22 O.15o/o 5:23 AM 86.10 86.36 O.17Yo
419t2024 5:20 AM 0.00 3.49 2.33Yo 5:23 AM 86.10 88.61 1.680/0
4t10t2024 5:20 AM 0.00 1.02 0.68%5:23 AM 86.10 87.37 0.85%
411112024 5:20 AM 0.00 3.48 2.32%5:23 AM 86.10 88.22 'l .410/o
411112024 7:59 AM 0.00 0.00 0.00%B:01 AM 86.10 84.25 -0.93%
4t12t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.30 0.13o/o
4t13t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.1 0 87.25 O.77o/o
411412024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.88 1.19o/o
411512024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.10 87.78 1 .12o/o
4116t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.'10 88.4S 1.60%
4t17t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.1 0 86.79 O.460/"
4118t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.S0 -0.80%
411812024 8:15 AM 0.00 1.23 o.61y"8:16 AM 86.10 86.'t6 0.03%
4t19t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 85.46 -0.42o/o
4120t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.33 0.16yo
412112024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.3s 0.83%
4t22t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.89 1.19o/o
4t23t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.10 85.13 -0.65%
412412024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 87.77 1.110/"
4125t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.1 0 84.'16 1.29%
4t25t2024 8:41 AM 0.00 0.00 0.00%B:43 AM 86.10 BB.O6 0.98%
412612024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.1 0 83.32 -1.85%
4t27t2024 5:20 AM 0.00 0.00 0.00%5:24 AM 86.10 83.39 1.81o/.
4128t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.'10 81.24 -3.240k
4t29t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86. t0 78.90 4.80%
4t29t2024 12:53 PM 0.00 0.00 0.00%1:02 PM 86.10 84.94 -0.580/.
413012024 5:20 AM 0.00 0.00 0.00%5:24 AM 86.0 84.70 -0.94Yo
5t1t2024 5:20 AM 0.00 0.00 0.00%5:24 AM 86.0 86.56 O.31o/"
51212024 5:20 AM 0.00 0.00 0.00%5:24 AM 86 0 86.53 O.28o/"
5t3t2024 5:20 AM 0.00 0.00 0.00%5:24 AM 86.0 88.03 1.29%
5t4t2024 5:20 AM 0.00 0.38 0.260/0 5:24 AM 86.10 89.43 2.22o/o
5t5t2024 5:20 AM 0.00 '1 .85 1.23o/o 5:23 AM 86.0 88.73 1 .760/o
51612024 5:20 AM 0.00 2.52 1.68%5:23 AM 86.0 89.47 2.24%
51712024 5:20 AM 0.00 2.O1 1.Uo/o 5:23 AM 86.1 0 91.42 3.54o/"
5t7t2024 10:29 AM 0.00 0.00 0.00o/o 10:39 AM 86.0 83.17 1.47%
5t8t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.10 84.71 -0.92o/o
5t9t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 86.29 0.13o/.
511012024 5:20 AM 0.00 0.00 o.00%5:23 AM 86 0 82.68 -2.28o/o
5t11t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86 0 84.64 -O.97o/"
511212024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 85.26 -0.56%
511312024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 83.8s 1.50o/o
5t14t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.67 -0.s5%
5115t2024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.10 84.',t6 1.29o/o
511612024 5:20 AM 0.00 0.00 0.00%5:23 AM 86.'10 82.81 -2.19o/"
5t17 t2024 5:20 AM 0.00 0.00 0.00o/o 5:23 AM 86.1 0 83.93 1.450/"
5t18t2024 5:'17 AM 0.00 0.00 0.00%5:24 AM 86.10 84.42 1.120
5t1912024 5:17 AM 0.00 0.00 0.00%5:24 AM 86.10 85.03 -0.72y.
512012024 5:17 AM 0.00 0.00 0.00%5:24 AM 86.10 85.66 -0.30o/o
512112024 5:17 AM 0.00 0.62 0.42Ya 5:24 AM 86 10 83.94 -1.44Yo
5t22t2024 5:17 AM 0.00 0.16 O.11o/o 5:24 AM 86.10 85.1 3 -0.640/0
5t23t2024 5:'17 AM 0.00 2.98 1.99%5:24 AM 86.10 86.53 0.28o/o
5t23t2024 8:10 AM 0.00 0.00 0.00%8:12 AM 86.10 83.62 -1.24o/o
5t24t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 86.10 87.31 0.81o/o
512512024 5:17 AM 0.00 1.51 1.01o/o 5:24 AM 86.10 89.13 2.O2%
512612024 5:17 AM 0.00 3.12 2.O8o/"5:24 AM 86.10 88.51 1 .610/o
Page 3 of 4
\nalvzer: AT-178C
Date SO2 Zero Time
Zero Cylinder
Value
(PPM SOrl
Zero Result
(PPM SOr)
Zero
Difference
(%"Erorl
iO2 Span Tim€
Span Cylinder
Value
(PPM SOr)
Span Result
(PPM SOr)
Span
Difference
lY" Errorl
5t27t2024 5:17 AM 0.00 2.11 1.41o/.5:24 AM 86.10 89.45 2.23V.
5t28t2024 5:17 AM 0.00 1.56 1.04%5:24 AM 86.10 89.40 2.20o/o
st29t2024 5:17 AM 0.00 1.31 O.87o/.5:24 AM 86.1 0 89.24 2.O9o/"
5t30t2024 5: 17 AM 0.00 1.17 o.780/o 5:24 AM 86.10 87.73 1.08%
5t31t2024 5: 17 AM 0.00 0.00 0 00%5:24 AM 86.10 83.05 -2.040
6t1t2024 5:17 AM 0.00 0.02 0.01o/o 5:24 AM 86.10 85.62 -0.32o/o
6t2t2024 5:17 AM 0.00 0.00 0.007o 5:24 AM 86.10 86.04 -0.04o/o
6t3t2024 5:17 AM 0.00 o.32 0.21yo 5:24 AM 86.10 84.85 -0.83%
6t412024 5:'17 AM 0.00 0.00 0.00%5:24 AM 86.10 84.32 1.19o/o
6t5t2024 5: 17 AM 0.00 0.00 0.00o/o 5:24 AM B6.10 83.57 1.69%
61612024 5:17 AM 0.00 0.00 0.00%5:24 AM 86.1 0 82.17 -2.62to
616t2024 1:44 PM 0.00 0.00 0.00%1:45 PM 84.96 82.53 1.21o/"
6t7t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.S6 81.'t0 -2.58%o
6t7t2024 10:36 AM 0.00 0.00 0.00%10:40 AM 84.96 83.78 -0.59%
6t812024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 81.66 -2.2oo/o
6t912024 5:17 AM 0.00 0.00 0.00o/o 5:24 AM 84.96 82.86 1.40%
6t10t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 79.97 -3.337o
6t10t2024 10:47 AM 0.00 0.00 0.00%10:56 AM 84.96 82.00 1.48%
611112024 5:'17 AM 0.00 0.00 0.00%5:24 AM 84.96 81.67 -2.19o/o
6t12t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 82.41 1.70o/o
6t13t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 81.32 -2.43o/"
6t14t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 85.38 0.28o/o
611512024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 85.9'1 O.640/0
6t1612024 5:'17 AM 0.00 0.63 0.4204 5:24 AM 84.96 84.17 -0.520/
6117t2024 5:17 AM 0.00 2.18 1.45yo 5:24 AM 84.96 90.10 3.42%
6t18t2024 5:17 AM 0.00 1.49 0.99%5:24 AM 84.96 89.76 3.200/0
6t18t2024 '11:10 AM 0.00 0.00 0.00%11:19 AM 84.96 83.82 -0.57o/o
6t19t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 84.00 -0.640/o
612012024 5:17 AM 0.00 1 .18 0.79o/o 5:24 AM 84.96 86.07 0.74Yo
6t20t2024 9:13 AM 0.00 1.22 0.61%9:18 AM 84.96 84.58 -0.'l90lo
6t21t2024 5:17 AM 0.00 2.33 1 .55o/o 5:24 AM 84.96 84.47 -0.33o/o
6t2212024 5:7AM 0.00 1.13 0.75o/o 5:24 AM 84.96 86.00 0.69%
6t23t2024 5:7AM 0.00 1.55 1.03%5:24 AM 84.96 86.05 o.73%
6t24t2024 5:7AM 0.00 0.00 0.00o/o 5:24 AM 84.96 83.84 -o.740/
6t2st2024 5:7AM 0.00 0.00 0.00%5:24 AM 84.96 85.00 0.03%
6t26t2024 5:7AM 0.00 0.00 0.00%5:24 AM 84.96 83.17 -1.2oo/o
6t27t2024 5:7AM 0.00 0.00 0.00%5:24 AM 84.96 81.37 -2.39%
6t28t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 83.23 1j5%
6t29t2024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 82.U 1.610
613012024 5:17 AM 0.00 0.00 0.00%5:24 AM 84.96 B3.5't -0.97o/o
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Page 4 of 4
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