DAQ-2025-001335

1

DAQC-220-25
Site ID 13083 (B4)

MEMORANDUM

TO: STACK TEST FILE – MOUNTAINWEST PIPELINE, LLC – Thistle Creek
Compression Station – Utah County

THROUGH: Rik Ombach, Minor Source Compliance Section Manager

FROM: Kyle Greenberg, Environmental Scientist

DATE: February 26, 2025

SUBJECT: Source: Thistle Creek Compressor Station – Unit: Turbine T-2
Location: Remote Location Outside Indianola, Utah County, Utah
Contact: Jean Semborski: 435-216-6732
Tester: Oasis Emission Consultants, Inc.
Site ID #: 13083
Permit/AO #: DAQE-AN130830005-13, dated May 10, 2013
Subject: Review of Pretest Protocol dated February 25, 2025
On February 25, 2025, Utah Division of Air Quality (DAQ) received a protocol for testing of Turbine T-2
MountainWest Pipeline Thistle Creek Compressor Station in Utah County, Utah. Testing will be
performed on April 15, 2025, to determine compliance with the emission limits found in condition II.B.2
of DAQE-AN130830005-13 and 40 CFR Part 60, Subpart KKKK.

PROTOCOL CONDITIONS:

1. RM 1 used to determine sample velocity traverses: OK
2. RM 2 used to determine effluent gas velocity: OK
3. RM 3A used to determine O2 and CO2 concentrations: OK
4. RM 4 used to determine moisture content: OK
5. RM 7E used to determine NOx emissions: OK
6. RM 10 used to determine CO emissions: OK

DEVIATIONS: None

CONCLUSION: The protocol appears to be acceptable to determine the emission rates
and concentrations of CO and NOx.

RECOMMENDATION: The last stack test for Turbine T-2 was conducted April 20, 2023. The
proposed test date is in compliance with condition II.B.2.b to test the unit
every 2 years. It is recommended that this pretest protocol is accepted to
conduct testing April 15, 2025, to determine the emission limit
compliance of Turbine T-2.

ATTACHMENTS: MountainWest Pipeline Testing Protocol, Notice of Test Date
Confirmation
4 ' - ) - "

Via Electronic Submittal

February 25, 2025

Utah Division of Air Quality
Attn: Director, NSR Section
P.O. Box 144820
Salt Lake City, UT 84114-4820

RE: MountainWest Pipeline, LLC
Thistle Creek Compressor Station
Approval Order DAQE-AN130830005-13
Performance Test Protocol for Turbine T-2

Dear Mr. Bird:

The purpose of this correspondence is to provide notification that MountainWest Pipeline, LLC
will be conducting a performance test at the Thistle Creek Compressor Station on the Solar
Centaur 40-4700S, Turbine T-2. The T-2 turbine will be tested for nitrogen oxides (NOX) and
carbon monoxide (CO) emissions in accordance with the Approval Order DAQE-AN130830005-
13, Condition II.B.2.b and 40 Code of Federal Regulations Part 60 (NSPS), Subpart KKKK. The
performance test is scheduled for April 15, 2025, between the hours of 7:00 A.M. and 7:00 P.M.
However, in the event of unforeseen circumstances, or as operational conditions dictate, testing
may extend past 7:00 P.M. The performance test protocol is enclosed for your review.

Questions regarding this submittal should be referred to Jean Semborski at [phone] or
[e-mail].

Sincerely,

Jean Semborski

Jean Semborski
Environmental Specialist

Enclosure

MountainWest Pipeline, LLC
650 South Main Street, Floor 300
Salt Lake City, Utah 84101

Utah Department of Environmental Quality
Division of Air Quality
Source Test Protocol

Approval Order # DAQE-AN130830005-13
& EPA 40 CFR 60 (NSPS), Subpart KKKK

Turbine: Solar Centaur 40-4700S
Permit ID: T-2
Company ID: #2
Serial #: 5265C

MountainWest Pipeline, LLC
Thistle Creek Compressor Station,
Utah County, Utah

February 24, 2025

Prepared By:

Oasis Emission Consultants, Inc.
2730 Commercial Way
Rock Springs, WY 82901

CERTIFICATION STATEMENT
This statement certifies that “to the best of their knowledge,” based on State and Federal
regulations, operating permits, plan approvals applicable to each source or control device to be
tested, and reasonable inquiry, the statements and information presented in the attached
document are true, accurate, and complete. If the information herein is found to be inaccurate or
incomplete by any participant, the protocol will be reviewed and all reasonable measures will be
taken to make necessary changes.
SOLAR CENTAUR 40-4700S TURBINE
PERMIT ID: T-2 / COMPANY ID: #2
CONTINUOUS COMPLIANCE TEST PROTOCOL
MOUNTAINWEST PIPELINE, LLC
THISTLE CREEK COMPRESSOR STATION / UTAH COUNTY / UTAH
Name: Shawna O’Brien______ Date: February 24th, 2025
Title: Sr. Environmental Scientist Company: Oasis Emission Consultants, Inc.
Signature:
_______________
Jean Semborski
___2-25-2025______
Date
Environmental Specialist
MountainWest Pipeline, LLC Utah / Colorado
1
TABLE OF CONTENTS

1.0 Introduction........................................................................................................................................2
1.1 Test Program Organization.......................................................................................................2
1.2 Test Project Objective(s)...........................................................................................................4
1.3 Facility Description..................................................................................................................4
2.0 Source Test Program Description.......................................................................................................5
2.1 Test Contractor........................................................................................................................5
2.2 Test Date.................................................................................................................................5
2.3 Time........................................................................................................................................5
2.4 Report Date.............................................................................................................................5
2.5 Test Report Format..................................................................................................................5
3.0 Testing Methodology and Procedures................................................................................................6
3.1 Permitted Limits and Standards................................................................................................6
3.1.1 UDEQ AO # DAQE-AN130830005-13 Limits...........................................................................6
3.1.2 NSPS Subpart KKKK Standard...................................................................................6
3.2 Sampling Matrix......................................................................................................................7
3.3 Stack Sampling Location..........................................................................................................8
3.4 Emission Measurement Methodologies.......................................................................................8
3.5 Equipment Utilization.............................................................................................................11
3.6 Test Quality Assurance Procedures..........................................................................................11
3.6.1 Sampling Protocol...................................................................................................11
3.6.2 Equipment Calibration and Measurement....................................................................11
3.7 Turbine Load Approximation.................................................................................................12
3.8 Test Methods.........................................................................................................................12

List of Figures and Tables
Table 1 – Report Contents................................................................................................................................5 Table 2 – Source Summary and Permitted Limitations....................................................................................6 Table 3 – NSPS Subpart KKKK NOx Standard...............................................................................................6 Table 4 – Sampling Matrix...............................................................................................................................7 Figure 1 – Sample Location Diagram...............................................................................................................8 Figure 2 – EPA Methods 1, 2 and 4 Sampling Train Schematic......................................................................9 Figure 3 – EPA Method 3A, 7E and 10 Sampling Train Schematic..............................................................10

Appendices

APPENDIX A: Example Calculations

APPENDIX B: Sample Calibration Sheets

2
1.0 Introduction
The purpose of this document is to provide relevant information pertaining to proposed periodic emissions testing at MountainWest Pipeline, LLC’s Thistle Creek Compressor Station in Utah County, Utah. Emissions testing will be conducted in accordance with the Utah Department of Environmental Quality (UDEQ) Approval Order # DAQE-AN130830005-13 (Issuance Date: May 10, 2013) and in accordance with EPA 40 CFR 60 (NSPS), Subpart KKKK. Testing will be conducted by Oasis
Emission Consultants, Inc.
1.1 Test Program Organization

Approval Order No.: DAQE-AN130830005-13
Federal Regulation: NSPS Subpart KKKK
Facility / Location: Thistle Creek Compressor Station
The Thistle Creek Compressor Station is located on BLM land along Main Line 104, near Indianola in Utah County, Utah. UTM Coordinates: 460,148 m Easting, 4,407,802 m Northing, UTM Zone 12
Source: Natural Gas Turbine Compressor, Solar Centaur 40-4700S
UDEQ Approval Order #DAQEAN130830005-13, Permit ID: T-2, Company ID: #2 (SN: 5265C)

Client Owner / Operator: MountainWest Pipeline, LLC Address: 322 West, 1100 North Price, UT 84501 Contact: Jean Semborski, Environmental Specialist Email: [e-mail] Cell.: [phone]
Test Company: Oasis Emission Consultants, Inc.

Address: 2730 Commercial Way Rock Springs, WY 82901 Contact: Chris Knott, P.Eng., Director, Engineering & Operations Phone: [phone]
Fax: [phone]

3
State Authority: Utah Department Of Environmental Quality
Address: PO Box 144820 Salt Lake City, UT 84114-4820 Contact: Rik Ombach, Minor Source Compliance Manager Email: [e-mail] Phone: [phone] Stack Test Report Submission: https://utahgov.co1.qualtrics.com/jfe/form/SV_3dSxf7JSzy4jwGh
4
1.2 Test Project Objective(s)
The purpose of the periodic (every two years) emissions compliance demonstration is to satisfy the requirements of the UDEQ AO # DAQE-AN130830005-13 (Issuance Date: May 10, 2013) and NSPS Subpart KKKK. As required by the UDEQ AO # DAQE-AN130830005-13 Conditions II.B.2.a and
II.B.2.b, testing to demonstrate periodic compliance will be conducted for nitrogen oxides (NOx) and carbon monoxide (CO) according to EPA Test Methods 1-4, 7E and 10. NOx ongoing compliance testing will be conducted in accordance with 40 CFR 60.4400. Oxygen will be measured to allow for NOx emission levels to be corrected to 15% O2.

Three, one hour test runs will be conducted on the Solar Centaur 40-4700S turbine (Permit ID: T-2; Company ID: #2) to demonstrate ongoing compliance with NOx and CO permitted limits and the NSPS Subpart KKKK standard for NOx. The Solar Centaur 40-4700S turbine has a rated output of 3,637 horsepower (hp) at base load. In accordance with 40 CFR 60.4400(b), testing will be conducted while the turbine is operating at 100 percent of peak load, plus or minus 25 percent. If at least 75 percent of
peak load cannot be achieved in practice, testing will be conducted at the highest
achievable load. As stipulated by UDEQ AO # DAQE-AN130830005-13 Condition II.B.2.b(H), testing will be conducted at no less than 90% of the production rate to date. Process parameters expected to be collected during the performance testing include, but are not limited to: atmospheric pressure, atmospheric temperature, fuel flow, humidity, O2% and CO2%. The process parameters will be recorded on the turbine test sheets and provided in the test report.
1.3 Facility Description
MountainWest Pipeline, LLC operates the Thistle Creek Compressor Station in Utah County, Utah. The Thistle Creek Compressor Station consists of two natural gas fired
turbines and an emergency generator. The turbines power natural gas compressors, which
are utilized in the transmission of natural gas. The purpose of this compressor station is to increase the pressure in a natural gas pipeline and move the natural gas further downstream via transmission pipelines to other facilities. The emergency generator provides back up power to support station equipment as needed, during periods when
electric power from electric utilities is interrupted.
The periodic compliance emission test will be conducted on the natural gas fired Solar Centaur 40-4700S turbine (Serial Number: 5265C) identified as T-2 in UDEQ AO # DAQE-AN130830005-13 Section II.A.3.
5
2.0 Source Test Program Description
2.1 Test Contractor

All source emission tests will be performed by Oasis Emission Consultants, Inc., based out of Rock Springs and Sheridan, Wyoming. Processed test results and all raw data captured during the tests are forwarded to Chris Knott, P.Eng., Director of Engineering and Operations and/or Charles Chapman, Manager of Technical Services, for quality
control and data checking. Once approved, tests are forwarded to the client.
2.2 Test Date
Emissions testing is currently scheduled to be conducted and completed on April 15, 2025.
2.3 Time

Testing is currently scheduled to be conducted between the hours of 7:00 A.M. and 7:00 P.M. However, in the event of unforeseen circumstances, or as operational conditions dictate, testing may extend past 7:00 P.M.
2.4 Report Date
The compliance test report will be submitted to the UDEQ no later than 60 days
following the periodic compliance test.
2.5 Test Report Format
The following table illustrates the format used for reports submitted.

Table 1: Report Contents.
Content Description Cover The cover will contain the air testing company information, facility name and source summary.
Introduction The introduction will include the test objective and descriptions of the source and control equipment (as applicable).
Stack Sampling Location The stack sampling location details the sampling site location.
Discussion of Test Results The test results provide the results for each test run.
Stack Sampling Methods and Procedures The stack sampling methods and procedures will include a detailed description of the methods utilized in the testing process and any deviations from the submitted protocol.
6
Equipment Utilization The equipment utilization provides a list of the test equipment employed in conjunction with the sampling test methods.
Process Parameters Process parameters summarizes the source parameters recorded during the test runs.
Quality Assurances Quality assurance and quality control procedures pertaining to the methods and equipment calibrations will be included in the emission source
test report.
Appendices The report’s appendices will contain test data, quality assurance/calibration data, example
equations and field notes.
3.0 Testing Methodology and Procedures
3.1 Permitted Limits and Standards

The purpose of the compliance test on the Solar Centaur 40-4700S turbine is to demonstrate continuing compliance for NOx and CO with permit limits and the NSPS Subpart KKKK standard for NOx. Permitted limits and the Subpart KKKK standard can be found in the following tables.
3.1.1 UDEQ AO # DAQE-AN130830005-13 Limits

Table 2: Source Summary and Permitted Limitations.
* Oasis Emission Consultants, Inc. will approximate the turbine load using process parameters measured, such as gas throughput, suction/discharge pressure/temperature, manufacturer’s BSFC, panel reading or fuel measurement (if available).
3.1.2 NSPS Subpart KKKK Standard
Table 3: NSPS Subpart KKKK NOx Standard.

Permit
ID
Source Serial
Number
Rated
Output*
Rated Heat Rate Permit NOx Permit CO
T-2 Solar Centaur 40-4700S turbine 5265C 3,637 hp @ base load 9,574 BTU/HP-hr @ base load 3.48 lb/hr, 25 ppmvd @ 15% O2
4.24 lb/hr
Permit ID Source NOx Standard
T-2 Solar Centaur 40-4700S turbine 25 ppmvd @ 15% O2
7
3.2 Sampling Matrix

Table 4: Sampling Matrix.
Method Title Parameter Reference Number of Tests
EPA 40 CFR 60 Appendix A, Method 1
Sample and Velocity
Traverses for Stationary
Sources
Sampling Point Determination https://www.epa.gov/system/files/documents/2023-09/2023%20Final%20MS%20%20Method%201_0.pdf

EPA 40 CFR 60 Appendix A, Method 2
Determination of Stack
Gas Velocity and
Volumetric Flow Rate
Stack Gas Flow Rate https://www.epa.gov/sites/default/files/2017-08/documents/method_2.pdf

EPA 40 CFR 60 Appendix A, Method 3A
Determination of
Oxygen and Carbon
Dioxide Concentrations
in Emissions From
Stationary Sources
(Instrumental Analyzer
Procedure)
O2, Dry Volumetric Flow Rate https://www.epa.gov/sites/default/files/2017-08/documents/method_3a.pdf

EPA 40 CFR 60 Appendix A, Method 4
Determination Of
Moisture Content
In Stack Gases
Moisture Content https://www.epa.gov/sites/default/files/2020-12/documents/method_4.pdf
3 x 1 hr
EPA 40 CFR 60 Appendix A, Method 7E
Determination of
Nitrogen Oxides
Emissions From
Stationary Sources
(Instrumental Analyzer
Procedure)

Nitrogen Oxides https://www.epa.gov/sites/default/files/2020-12/documents/method_7e_2.pdf
3 x 1 hr
EPA 40 CFR 60 Appendix A, Method 10
Determination Of
Carbon Monoxide
Emissions From
Stationary Sources
(Instrumental Analyzer
Procedure)
Carbon Monoxide https://www.epa.gov/sites/default/files/2017-08/documents/method_10.pdf
3 x 1 hr
EPA 40 CFR 60 Subpart KKKK §60.4400
Subpart KKKK-
Standards of
Performance for
Stationary Combustion
Turbines
Nitrogen Oxides https://www.ecfr.gov/cgi-bin/text-idx?node=sp40.7.60.kkkk#se40.8.60_14400

U.S. Environmental Protection Agency. “EMC Promulgated Test Methods.” Air Emission Measurement Center (EMC). 9 July 2024. Web. 24 February 2025. <https://www.epa.gov/ emc/emc-promulgated-test-methods>. U.S. Environmental Protection Agency. “Subpart KKKK–Standards of Performance for Stationary Combustion Turbines.” Code of Federal Regulation. Title 40. Chapter 1. Subchapter C. Part 60. Subpart KKKK. 71 FR 38497, July 2006. 20 February 2025. Web. 24 February 2025. <https://ecfr.federalregister.gov/current/title-40/chapter-I/subchapter-C/part-60/subpart-KKK>.

8
3.3 Stack Sampling Location

The inner exhaust stack diameter for the Solar Centaur 40-4700S turbine (Unit T-2(#2)) was previously measured as 45 inches. The sampling ports for moisture, flow, NOx and CO measurements are approximately 2.7 pipe diameters downstream from the nearest flow disturbance and 0.8 pipe diameters upstream from the nearest disturbance. The test location will be verified during the test program to meet the minimum specifications of a
sampling location as defined by EPA Method 1. An aerial lift will be utilized, if needed, to conduct sampling.

Figure 1: Sample Location Diagram.
3.4 Emission Measurement Methodologies

Testing will be performed and calculated in accordance with EPA Test Methods 1-4, 7E and 10, in addition to the procedures found in 40 CFR 60.4400 (Subpart KKKK). Oxygen will be measured to allow for NOx emission levels to be corrected to 15% O2. Turbine horsepower and other operating conditions will be recorded for each test run and
submitted in the test report.
Three, one hour test runs will be conducted on the Solar Centaur 40-4700S turbine (Unit T-2(#2)) for NOx and CO.
The schematics for our sampling system are shown on the following pages.

9
Figure 3: EPA Methods 1, 2 and 4 Sampling Train Schematic.
10

Figure 4: EPA Methods 3A, 7E and 10 Sampling Train Schematic.

11
3.5 Equipment Utilization

Oasis Emission Consultants Inc. will utilize the following gas analyzers and associated equipment for this testing:
 API 300M CO NDIR Analyzer
 API 200AH NOx/O2 Chemiluminescent/Paramagnetic Analyzer
 75 ft. Heated Sample Line
 Universal Analyzer 3040SSP Sample Gas Conditioner
 Standard or S-Type Pitot Tube c/w 20 ft. Heated Sample Line
 Method 4 Impinger System c/w Ice Box Tray
 Fyrite Analyzer for Carbon Dioxide Measurement
 Apex MC-170 Meter Box
 EPA G1 Protocol Calibration Gas
 Laptop Computer To Download Raw Analyzer Data

3.6 Test Quality Assurance Procedures
3.6.1 Sampling Protocol
Precautions are taken to keep the gas analyzer in a clean, thermally stable, vibration free environment to minimize analyzer drift and associated errors. Pre test calibrations and post test operations are performed within the testing trailer environment. Samples are taken according to EPA Methods 1-4, 7E, 10 and applicable NSPS Subpart KKKK procedures. The data from the samples are converted directly into computer language and recorded in the Compliance Specialist’s laptop computer. This eliminates the need for sample labeling and secures the preservation of the data while reducing human error. In addition, parameters associated with the turbine are recorded on test sheets at the time of the tests. Linearity checks are performed using certified calibration gases to ensure that the zero, mid, and upscale calibrations are within the certified calibration level and zero. Pre-test calibrations are then conducted on the zero and selected mid or upscale calibration gas determined by observing the native concentration of the target analytes in the sampled. exhaust. After each test run the same zero and selected mid or upscale calibration gas are analyzed to verify they are within the required specifications. Sample times for stratification will be determined by observing the sample response time for the oxygen to reach a stable level for low and upscale calibration gas concentrations. The time will then be doubled and during stratification, each sample point will use this dwell time to determine the concentration.

3.6.2 Equipment Calibration and Measurement Preventive diagnostic functions are built directly into the equipment utilized for the
testing. This diagnostic function provides the Compliance Specialist with failure
warnings allowing the determination of when repairs are necessary without performing
12
painstaking preventative maintenance procedures. However, equipment is inspected
regularly by the Compliance Specialists to guarantee maximum operational status. The process involved with equipment calibration ensures that there is no divergence from the manufacturer’s specifications.
3.7 Turbine Load Approximation
Oasis Emission Consultants Inc. will approximate the turbine load using process parameters measured, such as gas throughput, suction/discharge pressure/temperature,
manufacturer’s BSFC, panel reading or fuel measurement (if available).
The Solar Centaur 40-4700S turbine has a rated output of 3,637 hp at base load. In accordance with 40 CFR 60.4400(b), testing will be conducted while the turbine is operating at 100 percent of peak load, plus or minus 25 percent. If at least 75 percent of
peak load cannot be achieved in practice, testing will be conducted at the highest
achievable load. As stipulated by UDEQ AO # DAQE-AN130830005-13 Condition II.B.2.b(H), testing will be conducted at no less than 90% of the production rate to date.

3.8 Test Methods Oasis Emission Consultants, Inc. will employ EPA 40 CFR 60 (A) methods as required
by UDEQ AO # DAQE-AN130830005-13 and in accordance with 40 CFR 60.4400
(Subpart KKKK). These methods are described below.
 EPA 40 CFR 60 Appendix A, Method 1: Method 1 requires measurement of the various physical attributes of a stack to establish appropriate sampling locations.
 EPA 40 CFR 60 Appendix A, Method 2: Method 2 provides the means to calculate the average wet velocity for the exhaust effluent gas. This method employs the use of a standard or S-type pitot tube, a thermometer and an inclined manometer. The
temperature, static and differential pressures are all used to calculate the average wet
velocity. This value may be used in conjunction with the known stack diameter, and measured moisture content (Method 4), to approximate the average dry volumetric flow rate.
 EPA 40 CFR 60 Appendix A, Method 3A: Method 3A provides the means to
calculate the dry molecular weight of the effluent gas. After passing through a gas condenser, O2 gas concentrations from the effluent stream are measured by an instrumental analyzer. Measurements will be taken in conjunction with those from Method 2. The dry molecular weight will be calculated for each of the test runs. The O2 levels will also be used to allow for the correction to ppmvd @ 15% O2 for NOx.
 EPA 40 CFR 60 Appendix A, Method 4: Method 4 allows for the evaluation of the moisture content within the effluent stream. A sample of the effluent stream is extracted at a constant rate. The water is condensed from the stream through a series of impingers surrounded by an ice bath. The total mass of the water condensed and the total volume
of gas measured are used to calculate the moisture content within the exhaust effluent
stream. Moisture content will be calculated for each of the test runs.
13
 EPA 40 CFR 60 Appendix A, Method 7E: Method 7E is the instrumental method for measuring the NOx concentration in the effluent stream. After passing through a sample conditioning system, NOx concentration is measured by a chemiluminescent gas analyzer. The analyzer is calibrated using EPA Protocol G1 gas before and after each one hour test run.
 EPA 40 CFR 60 Appendix A, Method 10: Method 10 is the instrumental method for measuring the CO concentration in the effluent stream. After passing through a sample conditioning system, CO concentration is measured by an NDIR gas analyzer. The analyzer is calibrated using EPA Protocol G1 gas before and after each one hour test
run.
 EPA 40 CFR 60 Subpart KKKK § 60.4400: Subpart KKKK regulates the Nitrogen Oxide (NOx) and Sulfur Dioxide (SO2) pollutants. NOx will be measured using Method 7E. A stratification check will be performed prior to testing to determine sampling
location according to EPA 40 CFR 60 Subpart KKKK § 60.4400(a)(3)(ii)(B).

APPENDIX A

Example Calculations: The following is a step-by-step example of the calculations that will be utilized for the test runs.
Test Parameters
 Stack Diameter  Traverse Points  Ports  Barometric Pressure  Average O2  Average CO2  Load Approximation
EPA Methods 1-4: Determination of Stack Gas Velocity and Flow Rate

Absolute Temperature at Meter (°R) = (Tmi(start) + Tmi(final) + Tmo(start) + Tmo(final)) / 4 Where:
Tmi(start) – Gas meter inlet start temperature
Tmi(final) – Gas meter inlet final temperature
Tmo(start) – Gas meter outlet start temperature
Tmo(final) – Gas meter outlet final temperature

Dry Gas Volume (dcf) = DMFLC - DMILC Where: DMFLC – Final Volume indicated on dry gas meter (dcf) DMILC – Initial Volume indicated on dry gas meter (dcf)

Dry Gas Volume corrected to standard conditions (dscf) = K4 * Y * ((Vm * Pm) / Tm) Where:
K4 – Gas volume constant Y – Gas meter constant
Vm – Dry gas volume measured by dry gas meter
Pm – Absolute pressure at the dry gas meter
Tm – Absolute temperature at meter
Moisture Volume (scf) = (0.04715) * VLC + (0.04715) * VSG
Where: VLC – Volume indicated by mass liquid condensed H2O (g): (Final Mass Liquid H2O – Initial Liquid H2O) VSG – Volume indicated by mass liquid collected in silica gel H2O (g): (Final Mass Silica Gel – Initial Mass Silica Gel) 0.04715 – Correction factor to standard conditions for mass liquid

Moisture Content (%) = VW(STD) / (VW(STD) + VM(STD)) * 100 Where: VW(STD) – Volume of moisture collected as a gas at standard conditions (scf) VM(STD) – Volume of gas through dry gas meter (corrected dry scf)
Dry Molecular Weight (lb/lbmol) = (0.44 * %CO2) + (0.32 * %O2) + ((0.28 * (%N2 + %CO)) Where: %CO2 – Carbon Dioxide Content Of The Gas %O2 – Oxygen Content Of The Gas %N2 – Nitrogen Content Of The Gas %CO – Carbon Monoxide Content Of The Gas Wet Molecular Weight (lb/lbmol) = MD * (1-BWS) + (18) * BWS Where: MD – Molecular Weight Of The Dry Gas (lb/lbmol) BWS – Moisture Content Of The Gas (%/100)

Average Stack Gas Velocity (ft/sec) = Cp * (85.49) * ∆PAVG * (TS / (((PS / 13.6) + PB) * MA)) Where: CP – Pitot tube constant (unitless) ∆PAVG – Average square root of the stack gas pitot DP (inches water) TS – Average stack temperature (R) PB – Barometric pressure (in Hg) PS – Stack pressure relative to barometric pressure (inches water) MA – Molecular weight of the wet gas (lb/lbmol)
Average Dry Flowrate (dscfm) = 60 * (1-BWS) * VS *  * (((DS / 2) / 12)2) * TSTD / TS * (PB + (PS / 13.6)) / 29.92 Where: DS – Diameter of the stack (inches) BWS – Moisture content of the gas (%) TSTD – Standard temperature (528R) TS – Average stack temperature (R) PB – Barometric pressure (in Hg) PS – Stack pressure relative to barometric pressure (inches water) VS– Average Stack gas velocity (ft/sec)

EPA Method 7E & 10: Determination of NOx and CO Emissions From Stationary Sources
Corrected Flue Gas Concentration (PPM) = (CR - CO) * CMa / (CM – CO) Where: CR – Average flue gas concentration indicated by gas analyzer (ppm) CO – Average of initial and final zero system bias checks (ppm) CM – Average of initial and final span system bias checks (ppm) CMa – Actual concentration of span gas (ppm)

NOx Emission Rate (lb/hr) = PPMO * QO * MW * 60 / (385.3 * 1000000) Where: NOx – Nitrogen Oxides PPMO – Average Concentration Of Corrected Pollutant At Outlet QO – Volumetric Flow Rate At Outlet (dscfm) MW – Molecular Weight = 46.01 60– Conversion Factor (Minutes per Hour) 385.3 – Volume Occupied By One Pound Of Gas At Standard Condition (dscf/lb-mole) 1000000 – Conversion Factor (PPM To Mole Fraction) NOx Correction to 15% O2 = PPMO * (20.9 – 15) / *(20.9 – O2%) Where: NOx – Nitrogen Oxides PPMO – Average Concentration Of Corrected Pollutant At Outlet O2 – Oxygen Concentration in Exhaust Stream (%)
CO Emission Rate (lbs/hr) = PPMO * QO * MW * 60 / (385.3 * 1000000) Where: CO – Carbon Monoxide PPMO – Average Concentration Of Corrected Pollutant At Outlet QO – Volumetric Flow Rate At Outlet (dscfm) MW – Molecular Weight = 28.01 60– Conversion Factor (Minutes per Hour) 385.3 – Volume Occupied By One Pound Of Gas At Standard Condition (dscf/lb-mole) 1000000 – Conversion Factor (PPM To Mole Fraction)

APPENDIX B

SAMPLE
SAMPLE
Airgas
an Air Liquide company
Part Number:
Cylinder Number:
Laboratory:
pc;vp Number:
Gas Code:
Airgas Specialty Gases
Airgas USA LLC
525 North Industrial Loop Road
Tooele,UT 84074
Airgas.com
CERTIFICATE OF ANALYSIS
Grade of Product:EPA PROTOCOL STANDARD
E02N199E15A0497
CC93412
124 -Tooele (SAP)-UT
B72023
CO,BALN
Reference Number:
Cylinder Volume:
Cylinder Pressure:
Valve Outlet:
Certification Date:
153-402750636-1
144.0 CF
2015 PSIG
350
May 22,2023
Expiration Date:Ma 22 2031
Certificationperformed in accordance with "EPA Traceability Protocol for Assay and Certificationof Gaseous Calibration Standards (May 2012)"documentEPA
600/R-12/531,using the assay procedures listed.Analytical Methodology does not require correction for analytical interference,This cylinder has a total analytical
uncertainty as stated below with a confidencelevel of 95%.There are no significantimpurities which affect the use of this calibrationmixture.All concentrations are on a
mole/mole basis unless otherwise noted.The results relate only to the iterns tested. The report shall not be reproduced exceptin full without approval of the laboratory.Do
Not Use This Cylinder below 100 psig, i.e.0.7 megapascals.
ANALYTICAL RESULTS
Component
CARBON MONOXIDE
RequestedConcentration
30.00 PPM
Balance
Cylinder No
CC714889
19060528
Actual
Concentration
29.94 PPM
Protocol
Method
Gl
NITROGEN
Type
NTRM
NTRM
Lot ID
20060920
190605
CALIBRATION STANDARDS
Concentration
26.54 PPM CARBON MONOXIDE-INITROGEN
495.2 PPM SULFUR DIOXIDE/NITROGEN
Total Relative
Uncertainty
+/-0.5%NIST Traceable
Uncertainty
0.4%
0.5%
AssayDates
05/22/2023
Expiration Date
Jun 28,2027
Aug 02,2025
The SRM,NTRM,PRM,or RGM noted above is only in reference to the GMIS used in the assay and not part of the analysis.
ANALYTICAL EQUIPMENT
Instrument/Make/ModeI
Thermo 48i-TLE 1163640031 CO
Triad Data Available Upon Request
Approve
Analytical Principle
CO NDIR (Mason)
for Rele se
Last Multipoint Calibration
Apr 26,2023
11
Page 1 of 1
SAMPLE
SAMPLE
Airgas
an Air Liquide company
Part Number:
Cylinder Number:
Laboratory
PGVP Number:
Gas Code:
Airgas Specialty Gases
Airgas USA LLC
525 North Industrial Loop Road
Tooele,UT 84074
Airgas.com
CERTIFICATE OF ANALYSIS
Grade of Product:EPA PROTOCOL STANDARD
E03N180E15A0138
CC349454
124 -Tooele (SAP)-UT
B72022
Reference Number:
Cylinder Volume:
Cylinder Pressure:
Valve Outlet:
Certification Date:
153-402554387-1
141.0 CF
2015 PSIG
590
sep 27,2022
Expiration Date:Se 27 2030
Certificationperformed in accordance with 'EPA Traceability Protocol for Assay and Certificationof Gaseous Calibration Standards (May 2012)"document EPA
600/R-12/531,using the assay procedures listed.Analytical Methodology does not require correction for analytical interference.This cylinder has a total analytical
uncertainty as stated below with a confidence level of 95%.There are no significantimpurities Which affect the use Of this calibration mixture.All concentrations are on amole/mole basis unless otherwise noted.
Do Not Use This C linder below 100 si ,i.e.0.7 me a ascaiS.
ANALYTICAL RESULTS
Component
CARBON DIOXIDE
OXYGEN
NITROGEN
RequestedConcentration
10.00 %
10.00 %
Balance
Cylinder No
CC411744
SG9161286BAL
ActualConcentration
9.924 %10.09 %
ProtocolMethod
Gl
Type
NTRM
NTRM
Lot ID
13060405
98051010
CALIBRATION STANDARDS
Concentration
7.489 %CARBON DIOXIDE-INITROGEN
12.05 %OXYGEN/NITROGEN
ANALYTICAL EQUIPMENT
Analytical Principle
C02 NDIR (Dixon)
02 Paramagnetic (Mason)
Total Relative
Uncertainty
+1-1.2%NIST Traceable
+1-0.7%NIST Traceable
Uncertainty
0.6%
0.7%
AssayDates
09/27/2022
09/27/2022
Expiration Date
May 14,2025
Dec 14,2023
Instrument/Make/ModeI
Horiba VIA-510 SV4MEUTJ C02
Horiba MPA-510 W603MM58 02
Triad Data Available Upon Request
Last Multipoint Calibration
sep 14,2022
Sep 14,2022
Approved for Relea Page 1 of •i
SAMPLE
Airgas
an Air Liquidecompany
Part Number:
Cylinder Number:
Laboratory:
PGVP Number:
Gas Code:
Airgas Specialty Gases
AirgasUSA LLC
525 North Industrial Loop Road
Tooele,UT 84074
Airgas.cnm
CERTIFICATE OF ANALYSIS
Grade of Product:EPA PROTOCOL STANDARD
E03N160E15A0286
CC504994
124 -Tooele (SAP)-UT
B72023
Reference Number:
Cylinder Volume:
Cylinder Pressure:
Valve Outlet:
Certification Date:
153-402803016-1
159.6 CF2015PSIG
590
Jul 25,2023
Expiration Date:Jul 25 2031
Certificationperformed in accordance with "EPA Traceability Protocol for Assay and Certificationof Gaseous Calibration Standards (May 2012)"document EPA
600/R-12/531,using the assay procedures listed.Analytical Methodology does not require correction for analytical interferenæ.This cylinder has a total analytical
uncertainty as stated below with a confidencelevel of 95%.There are no significantimpurities which affect the use of this calibration mixture.All concentrations are on a
mole/mole basis unless otherwisenoted.The results relate only to the items tested.The report shall not be reproduced exæpt in full without approval of the laboratory.Do
Not Use This Cylinder below 100 psig, i.e.0.7
ANALYTICAL RESULTS
Component
CARBON DIOXIDE
OXYGEN
RequestedConcentration
20.00 %
20.00 %Balance
Cylinder No
CC415397
CC282492
ActualConcentration
19.75 %20.02 %
Protocol
Method
Gl
NITROGEN
Type
NTRM
NTRM
Lot ID
13060802
09061434
Instrument]Make/Model
Horiba VIA-510 SV4MEUTJ C02
Horiba MPA-510 W603MM58 02
Triad Data Available Upon Request
CALIBRATION STANDARDS
Concentration
24.04 %CARBON DIOX!DE/NITROGEN
22.53 %OXYGEN/NITROGEN
ANALYTICAL EQUIPMENTAnalytical Principle
C02 NDIR (Dixon)
02 Paramagnetic (DIXON)
Total Relative
Uncertainty
+1-0.7%NIST Traceable
+1-0.5%NIST Traceable
Uncertainty
0.6%
0.4%
Last Multipoint
Jun 26,2C23
Jun 29,2023
Approved for Relea
Assay
Dates
07/25/2023
07/25/2023
Expiration Date
Dec 11,2025
May 13,2025
Page I of I
SAMPLE
'For valid test results, the Actual Vacuum should be 1 to 2 in. Hg greater than the Theoretical Critical Vacuum shown above.
'The Critical Orifice Coefficient. K'. must be entered in English units, (fl3,oR1J2)I(in.Hg'min),
Meter Thermocouple Calibration
Reference Temp (deg
F) 120 Meter Temp (deg F) 120
Calibration Data
Run Time Metering Console
DGMOrifice Volume Volume Outlet Temp Outlet Temp
Elapsed IlH Initial Final Initial Final
(e) (Pm) (Vm;) (Vm,) (tm,) (tm,)
min in H2O cubic feet cubic feet of of
Serial
Number
Critical Orifice
Coefficient AmbTemp
Initial
K' (!"mb)
see above2 of
AmbTemp
Final
(I,mb)
of
Actual
Vacuum
in Hg
7.0 1.2 676.101 681.607 71 72 00-63 0.6025 75 76 13
9.0 0.6 681.607 687.001 72 73 00-55 0.4498 76 78 15
12.0 0.4 687001 692.408 -73 74 00-48 0.3470 78 79 17
Results
Standardized Data I
Calibration Factor -­Dry Gas Meter Critical Orifice Value Variation
(Vm{,,,) (Qm'''d) (Vcr'''d) (Q'""d) (Y) (1lY)
cubic feet cfm cubic feet cfm
Dry Gas Meter
Flowrate
Sid & Corr
(Qm'''d)',",,)
cfm
IlH@
I0.75SCFM Variation
(LlH@) I (MH@)
in H2O
4.420 0.631 4.390 0.627 0.993 0.003 0.627 1.384 0.048
4.314 0.479 4.208 0.468 0.975 -0.015 0.468 1.238 -0.098
4.314 0.359 4.323 0.360 1.002 0.012 0.360 1.386 0.050
0.990 Y Average 1.336 LlH@Average
Note: For Calibration Factor Y, the ratio of the reading of the calibration meter to thejry gas meter, acceptable tolerance of individual values from the average is +-0.02.
Meter Console Information
Console Model Number 522-T17
Console Serial Number 1412041
DGM Model Number S110
DGM Serial Number 1234705
APEX INSTRUMENTS METHOD 5 POST-TEST CONSOLE CALIBRATION

USING CALIBRATED CRITICAL ORIFICES

3·POINT ENGLISH UNITS

Calibration Conditions
Date ITime 15-Jul-24 11:08
Barometric Pressure 24.1 in Hg
Theoretical Critical Vacuum1 11.4 in Hg
Calibration Technician Oavid Rosette
Std Temp

Std Press

K,
Factors/Conversions
528 OR
29.92 in Hg
17.647 oR"n Hg
PA M~~, CFR 40 Part 60, using the Precision Wet Test Meter # 11AE6,
~ich is traceable to the National Bureau of Standards (N.I.S.T.).
Date
SA
M
P
L
E
Meter Console Information
APEX INSTRUMENTS METHOD 5 PRE-TEST CONSOLE CALIBRATION
USING CALIBRATED CRITICAL ORIFICES
5-POINT ENGLISH UNITS
Calibration Conditions
Console Model Number
Console Serial Number
DGM Model Number
DGM Serial Number
522
1412041
Silo
234705
Date Time
Barometric Pressure
Theoretical Critical Vacuum
Calibration Technician
27-Se 23
24.2
11.4
David Rosette
in H
Hg
IFor valid test results,theActual Vacuum should be I to 2 in.Hg greater than the Theoretical Critical Vacuum shown above.
2The Critical Orifice Coefficient,K',must be entered in English units,*min).
Run Time
Elapsed
(0)
6.0
7.0
9.0
12.0
17.0
D
(V m(std))
cubicfeet
5.232
4.624
4.514
4.595
4.337
DGM Orifice
(Prn)
in H20
2.2
1.2
0.6
0.4
0.2
Volume
Initial
cubic feet
110.800
116.900
122.307
127.605
133.002
Meterin Console
Volume
Final
cubic feet
116.900
122.307
127.605
133.002
138.104
Outlet Temp
Initial
(tmi)
63
64
64
64
Results
Calibration Data
Outlet Temp
Final
(tmf)
63
63
64
65
Serial
Number
QD-73
QD-63
QD-55
QD-48
QD-40
D Gas Meter
Flowrate
std &corr
0.830
0.636
0.474
0.366
0.244
10:14
in Hg
in Hg
Coefficient
K'
see above2
0.7866
0.6025
0.4498
0.3470
0.2315
0.75 SCFM
in H20
1.620
1.497
1.337
I.497
1.678
1.526
Critical Orifice
Amb Temp
Initial
(tam5)
66
66
66
67
67
Variation
(AAH@)
0.094
-0.029
-0.189
-0.029
0.152
Average
Date
Std Tem
Std Press
Amb Temp
Final
(tarnb)
66
66
67
67
67
Factors/Conversions
534
29.00
18.414
Actual
Vacuum
in Hg
11
13
14
16
17
Standardized Data
Calibration Factor
Gas Meter
(Qrn(std))
cfm
0.872
0.661
0.502
0.333
0.255
Critical Orifice
(Vcqst<D
cubicfeet
4.980
4.450
4.270
4.390
4.149
(Qcr(std))
0.830
0.636
0.474
0.366
0.244
Value
0.952
0.962
0.946
0.955
0.957
0.954
Variation
-0.003
0.008
-0.008
0.001
0.002
Y Avera e
Note:For Calibration Factor Y,the ratio Of the readin Of the calibration meter to the d
I certify thatthe above Dry Gas Meter was calibrated i ccor nc with U
as meter,acceptable tolerance Of individual values from the avera e is +-0.02.
Methods, CFR 40 Part60,using the Precision Wet Test Meter #1 IAE6,
107,which is traæable to the National Bureau of Standards (N.I.S.T.).which in tum wascalibrated using
Signatu
n Bell #7 ,certifi
SA
M
P
L
E
SAMPLE