DAQ-2025-001943

1

DAQC-345-25
Site ID 14788 (B4)

MEMORANDUM

TO: STACK TEST FILE – WEXPRO COMPANY – Clay Basin Compressor Station

THROUGH: Rik Ombach, Minor Source Oil and Gas Section Manager

FROM: Paul Bushman, Environmental Scientist

DATE: April 4, 2025

SUBJECT: Sources: ICE-1 – Waukesha F3514GSI – SN:WAU-1711331
Location: Remote Location in Daggett County, Utah
Contact: Sean Warden: 804-389-2730.
Tester: Oasis Emission Consultants, Inc.
Site ID #: 14788
Permit/AO #: DAQE-AN147880007-23, dated July 31, 2023
Subject: Review of Pretest Protocol dated April 4, 2025

On April 4, 2025, Utah Division of Air Quality (DAQ) received the protocol for the testing of ICE-1 at
Wexpro Company Clay Basin Compressor Station in Daggett County, Utah. Testing will be performed on
May 14, 2025, to determine compliance with the emission limits found in Condition II.B.2.a of Approval
Order DAQE-AN147880007-23 and 40 CFR Part 60, Subpart JJJJ.

PROTOCOL CONDITIONS:

1. RM 1 used to determine sample velocity traverses: OK
2. RM 2 used to determine stack gas velocity and volumetric flow rate: OK
3. RM 3 used to determine dry molecular weight of the gas stream: OK
4. ASTM D6348-03 used to determine H2O content; NOx, CO, and VOC emissions: OK

DEVIATIONS: None.

CONCLUSION: The protocol appears to be acceptable.

RECOMMENDATION: Send protocol review and test date confirmation notice.

ATTACHMENTS: Wexpro Company pretest protocol and test notification.

1
Wexpro Company 333 South State Street Salt Lake City, Utah 84111 United States
By Electronic Submittal: Utah Department of Environmental Quality Division of Air Quality P.O. Box 144820 Salt Lake City, Utah 84114-4820 RE: Wexpro Company Clay Basin Compressor Station Initial Performance Test Protocol To whom it may concern: The purpose of this correspondence is to provide notification that Wexpro Company will be conducting an initial performance test at the Clay Basin Compressor Station
on the Waukesha F3514GSI engine, Unit ID: ICE-1. The ICE-1 engine will be tested
for nitrogen oxides (NOX), carbon monoxide (CO) and volatile organic compound (VOC) emissions in accordance with Approval Order # DAQE-AN147880007-23, Condition II.B.2.a. and 40 CFR 60, 40 CFR 60 Subpart JJJJ. The initial testing will be conducted between the hours of 7:00 A.M. and 7:00 P.M. on May 14, 2025.
However, in the event of unforeseen circumstances, or as operational conditions
dictate, testing may extend past 7:00 P.M. The initial performance test protocol is enclosed for your review. Dominion Energy is submitting this test report on behalf of Enbridge, Inc. during a transitional support period. If you have any questions or require any additional information, please contact Sean Warden at [phone] or via email at [e-mail]. Sincerely, L. Barry Goodrich Manager, Air
April 04, 2025

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

Approval Order # DAQE-AN147880007-23
& Federal Regulation: EPA 40 CFR 60, Subpart JJJJ

Engine: (1) Waukesha F3514GSI
Unit ID: ICE-1
Serial Number: WAU-1711331

Wexpro Company
Clay Basin Compressor Station
(Site ID: 14788),
Daggett County, Utah

March 25, 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.
(1) WAUKESHA F3514GSI
UNIT ID: ICE-1
INITIAL COMPLIANCE TEST PROTOCOL
WEXPRO COMPANY
CLAY BASIN COMPRESSOR STATION / DAGGETT COUNTY / UTAH
Name: Shawna O’Brien______ Date: March 25th, 2025
Title: Sr. Environmental Scientist Company: Oasis Emission Consultants, Inc.
Signature:
________________________________________________ __________________
R. Sean Warden Date
Environmental Consultant
Dominion Energy Services, Inc.
April 4, 2025
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 Standards and Limits...............................................................................................................6
3.1.1 UDEQ Approval Order # DAQE-AN147880007-23 Limits.......................................................6
3.1.2 EPA 40 CFR 60, Subpart JJJJ Standards......................................................................6
3.2 Sampling Matrix......................................................................................................................7
3.3 Stack Sampling Location..........................................................................................................7
3.4 Emission Measurement Methodologies.......................................................................................8
3.4.1 Measurement of VOC (NMNEHC C3)...........................................................................9
3.5 Equipment Utilization.............................................................................................................10
3.6 Test Quality Assurance Procedures..........................................................................................10
3.7 Engine Operating Parameters.................................................................................................11
3.8 Engine Load Approximation...................................................................................................11
3.9 Test Methods.........................................................................................................................11

List of Figures and Tables
Table 1 – Report Contents................................................................................................................................5 Table 2 – Source Summary and Permitted Limitations....................................................................................6 Table 3 – NSPS Subpart JJJJ Standards...........................................................................................................6 Table 4 – Sampling Matrix...............................................................................................................................7 Figure 1 – Sample Location Diagram...............................................................................................................8 Figure 2 – Schematic of FTIR Sampling System.............................................................................................9

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 initial emissions testing at Wexpro Company’s Clay Basin Compressor Station in Daggett County, Utah. Emission testing will be conducted in accordance with the Utah Department of Environmental Quality (UDEQ) Approval Order # DAQE-AN147880007-23 (Issuance Date: July 31, 2023) and the United States Environmental Protection Agency (U.S. EPA) 40 CFR 60,
Subpart JJJJ (NSPS Subpart JJJJ). Testing will be conducted by Oasis Emission Consultants, Inc.
1.1 Test Program Organization

Approval Order No.: DAQE-AN147880007-23

Federal Regulation: EPA 40 CFR 60, Subpart JJJJ

Facility / Location: Clay Basin Compressor Station (Site ID: 14788) The facility is located in the NWSW of Section 16, Township 3N, Range 24E, in Daggett County, Utah. UTM Coordinates: 650,270 m Easting, 4,539,450 m Northing, UTM Zone 12
Emission Source(s): Unit ID: ICE-1 – Waukesha F3514GSI One (1) natural gas fired 4-Stroke Rich-Burn (4SRB) Waukesha F3514GSI reciprocating internal combustion engine (RICE) rated at 740 horsepower (hp). The engine is used to power a compressor and is equipped with a Non-Selective Catalytic Reduction (NSCR) catalyst and an air-fuel ratio control (AFRC). The engine was manufactured in 2024 and is subject to the requirements listed in NSPS Subpart JJJJ. The 4SRB engine is a non-emergency, remote stationary RICE at an area source of HAP under EPA 40 CFR 63, Subpart ZZZZ (NESHAP Subpart ZZZZ). Client Owner / Operator: Wexpro Company Dominion Energy Address: 120 Tredegar Street, Clearinghouse Building, 3rd Floor Richmond, VA 23219 Contact: R. Sean Warden, QSTI, Environmental Consultant 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 emissions compliance demonstration is to satisfy the initial test requirements of the UDEQ Approval Order # DAQE-AN147880007-23 (Issuance Date: July 31, 2023) and NSPS Subpart JJJJ. As required by Approval Order # DAQE-AN147880007-23 Condition II.B.2.a and NSPS
Subpart JJJJ, testing will be conducted on the Waukesha F3514GSI engine (Unit ID: ICE-1) to demonstrate compliance with permitted limits and NSPS JJJJ standards for nitrogen oxides (NOx), carbon monoxide (CO) and Volatile Organic Compounds (VOC), defined as non-methane, non-ethane hydrocarbons as propane (NMNEHC C3). Three, one hour tests will be
conducted at the outlet of the NSCR catalyst according to EPA Reference Methods 1-3 and
ASTM D 6348-03. Testing to demonstrate compliance with the permitted limits and the NSPS JJJJ standards will be conducted concurrently. The test report will show results in accordance with EPA 40 CFR 60, Subpart JJJJ Table 1 and
Table 1 Footnote a. Footnote a allows owners and operators of stationary non-certified SI
engines to choose to comply with the NSPS Subpart JJJJ standards in units of either grams per brake-horsepower hour (g/Bhp-hr) or units of parts per million dry volume standardized to 15% oxygen (ppmdv at 15% O2). Results from the initial NSPS Subpart JJJJ compliance test will be reported in ppmdv at 15% O2 and g/Bhp-hr. Results to show compliance with the Approval
Order # DAQE-AN147880007-23 limits will be reported in units of g/BHp-hr and lb/hr.
The Waukesha F3514GSI engine has a rating of 740 hp. It is expected that the performance test will be conducted within ±10% of 100% peak, or the highest achievable load. Process parameters expected to be collected during the performance testing include, but are not limited to: atmospheric pressure, atmospheric temperature, engine RPM, manifold pressure, manifold temperature, air/fuel ratio setting(s), suction/discharge pressures, ignition timing, O2% and CO2%. The process parameters will be recorded on the engine test sheet and provided in the test report.
1.3 Facility Description
Wexpro Company operates the Clay Basin Compressor Station located remotely in Daggett County, Utah. The natural gas compressor station includes a natural gas fueled compressor that is powered by a Waukesha F3514GSI.
The initial test will be conducted on the 740 hp Waukesha F3514GSI compressor engine (Unit ID: ICE-1; Serial Number: WAU-1711331).
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 May 14, 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 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.
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.
Equipment Utilization The equipment utilization provides a list of the test
equipment employed in conjunction with the sampling test methods.
6
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 shall be included in the emission source
test report.
Appendices The report’s appendices will contain test data, quality assurance/calibration data, load calculations,
example equations and field notes.
3.0 Testing Methodology and Procedures
3.1 Standards and Limits

The purpose of the initial compliance test on the Waukesha F3514GSI compressor engine is to
demonstrate compliance for NOx, CO and VOC (as NMNEHC C3), with the limits listed by UDEQ Approval Order # DAQE-AN147880007-23 Condition II.B.2.a and the standards listed by Table 1 to EPA 40 CFR 60, Subpart JJJJ. Permitted limits for each constituent and the EPA NSPS Subpart JJJJ standards can be found in the following tables.

3.1.1 UDEQ Approval Order # DAQE-AN147880007-23 Limits
Table 2: Source Summary and Permitted Limitations.

3.1.2 EPA 40 CFR 60, Subpart JJJJ Standards
Table 3: NSPS Subpart JJJJ Standards.
EPA 40 CFR 60, Subpart JJJJ Table 1 Footnote a allows owners and operators to choose to
comply with the emission standards in units of either g/BHp-hr or ppmdv at 15 percent O2. Results from the initial compliance test will be reported in ppmdv at 15% O2 and g/Bhp-hr.
Unit ID Engine Engine S/N HP Max.
Allowable
NOx
Max.
Allowable
CO
Max.
Allowable
VOC
ICE-1 Waukesha F3514GSI
WAU-1711331 740 1.0 g/BHP-hr, 3.30 lb/hr 0.7 g/BHP-hr, 2.30 lb/hr 0.3 g/BHP-hr, 1.00 lb/hr
Unit ID Engine Engine S/N HP Manufacture
Date
EPA
Standard
NOx
EPA
Standard
CO
EPA
Standard
VOC
ICE-1 Waukesha F3514GSI
WAU-1711331 740 2024 1.0 g/BHP-hr, 82 ppmdv @ 15% O2
2.0 g/BHP-hr, 270 ppmdv @ 15% O2
0.7 g/BHP-hr, 60 ppmdv @ 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 3 Gas Analysis for the
Determination of Dry
Molecular Weight
O2, CO2, Dry Volumetric Flow Rate
https://www.epa.gov/sites/default/files/2017-08/documents/method_3.pdf

ASTM D 6348-03 Standard Test Method
For Determination Of
Gaseous Compounds By
Extractive Direct
Interface Fourier
Transform Infrared
(FTIR) Spectroscopy
Nitrogen Oxides, Carbon Monoxide, Non-Methane Non-Ethane Hydrocarbons on a Propane Basis and Moisture Content
https://www.astm.org/Standards/D6348.htm 3 x 1 hr
ASTM Standard D 6348, 2003, “Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy.” ASTM International, West Conshohocken, PA, 2003, DOI: 10.1520/D6348-03. PDF. <www.astm.org>. U.S. Environmental Protection Agency. “EMC Promulgated Test Methods.” Air Emission Measurement Center (EMC). 19 March 2025. Web. 25 March 2025. <https://www.epa.gov/ emc/emc-promulgated-test-methods>.
3.3 Stack Sampling Location
The inner exhaust stack diameter for the Waukesha F3514GSI compressor engine will be measured by the Oasis Emission Consultants, Inc. Compliance Specialist during the compliance
test and will be verified to meet the minimum specifications of a sampling location as defined by
EPA Method 1 / EPA 40 CFR 60, Subpart JJJJ. An aerial lift will be utilized, if needed, to conduct sampling. The 740 hp Waukesha F3514GSI natural gas fired, rich burn engine (Unit ID: ICE-1) employs a
NSCR catalyst and AFRC to regulate NOx, CO and VOC emission levels.

8

Figure 1: Sample Location Diagram.
3.4 Emission Measurement Methodologies

Testing will be performed and emissions calculated on the Waukesha F3514GSI engine (Unit
ID: ICE-1), in accordance with EPA Test Methods 1-3 and ASTM D 6348-03 for NOx, CO, VOC (as NMNEHC C3) and H2O. Three, one hour test runs will be conducted for NOx, CO and VOC.
The MKS Multigas 2030 FTIR system inherently converts the wet levels of NOx, CO and VOC
(as NMNEHC C3) to dry levels and displays the dry levels to the Compliance Specialist(s) via a computer display. The system is able to perform this conversion due to the FTIR also measuring the moisture content of the effluent stream. Therefore, it is the dry levels that are typically logged.

9
The schematic for our sampling system is shown below.
Figure 2: Schematic of FTIR Sampling System.
The sampling system is used to draw the sample from the stack at an elevated temperature, remove particulates and push the gas through a secondary heated line into the MKS 2030 analyzer to maintain correct pressure and temperature. There is no reduction in water concentration or any other component.
3.4.1 Measurement of VOC (NMNEHC C3)

The algorithm currently used for NMNEHC C3 and developed for natural gas fired applications by MKS instruments in accordance with EPA standards, is the following:
(2.4*c8/(1+exp((2-c8)/0.2))+1.9*c11/(1+exp((2-c11)/0.2))+6*c12/(1+exp((0.5-c12) /0.2))+2.85*c13/(1+exp((2-c13)/0.2))+3*c14/(1+exp((1-c14)/0.2)))/3
c8= acetylene
c11= ethylene c12= hexane c13= propylene c14= propane
Note: The constants in front of each of the compounds listed represents the FID response factor when calibrated with Propane. As with any CEMS analyzer, the FTIR may demonstrate a negative zero bias. The “exp”
functions listed in the algorithm above are intended to mathematically filter out any negative
biases and set them to approach zero.
10
3.5 Equipment Utilization

Oasis Emission Consultants Inc. will utilize the following gas analyzers and associated equipment for this testing:

• MKS MultiGas 2030 FTIR Continuous Gas Analyzer
• Laptop Computer for the FTIR Analyzer using MKS MG2000 Software
• 75ft or 100ft Heated Teflon Line w/ Heated Sample Probe and Spike Bypass Line
• Standard or S-Type Pitot Tube c/w 20 ft. Heated Sample Line • Fyrite Analyzer for O2/CO2 Measurement • EPA Protocol G1 Calibration Gas
3.6 Test Quality Assurance Procedures

Calibration Transfer Standards (CTS) procedures will be conducted according to ASTM requirements for both pre and post testing. Similarly, QA spiking procedures will be followed for pre and/or post testing. Various factors often make determining the exact concentrations for spiking procedures indiscernible prior to testing, even if the engine has been previously tested.
Furthermore, it is infeasible to obtain and transport a multitude of gas concentrations for varying
analytes. Therefore, a mixed gas bottle with a high enough concentration for multiple engines may be utilized during the spiking procedures. A summary of all spiking procedures/results will be provided in the test report.
Analysis of the CO2 exhaust effluent will be used to determine the dilution factor. Per the ASTM
requirements, steady levels of CO2 will be observed over a sufficient period of time to allow for a representative average. The CO2 present in the native sample will be used as the tracer. There are two components that
make up the spike: 90% native and 10% spike. Both the native and spike are being added to the
gas cell and measured simultaneously. Since the CO2 concentration for most engines is very stable during testing, the reduction in its concentration when a spike is applied can provide very accurate prediction on the ratio of spike gas to engine emission.
Calibration gases will be spiked into the effluent stream using a bypass line at approximately
10% of the sampling rate. We will obtain the dilution factor through observations of the stack CO2 behavior using the following equation: CO2AVG – CO2SPIKE
DF = ------------------------
CO2 AVG Where: CO2AVG = The average undiluted CO2 stack gas concentration of pre and post spike measurements
CO2SPIKE = The average diluted CO2 stack gas concentration when spiked with NO2
gas
11
The sample recovery of the calibration gases will then be obtained from the following equation:

% REC = (Spike MEAS – Stack MEAS)* (1 – DF)
---------------------------------------------------------
CS * DF
Where: Spike MEAS = The average diluted stack gas concentration when spiked
Stack MEAS = The average undiluted stack gas concentration
DF = Dilution factor
CS = Certified concentration of calibration standards
The Sample Recovery average will be calculated to determine compliancy with the QA standard of 70% to 130%. A summary of all spiking procedures/results will be provided in the test report.
3.7 Engine Operating Parameters

Engine operating parameters, where applicable, will be recorded for each test which may
include: engine RPM, manifold pressure, manifold temperature, fuel flow, air flow, O2% and CO2%.
3.8 Engine Load Approximation

Oasis Emission Consultants Inc. will approximate the engine load using the measured process
parameters, such as gas throughput, suction/discharge pressure/temperature; by correlating the intake manifold conditions with the engine manufacture heat balance data; by correlating the measured engine speed with the manufacturer’s performance curve; the engine load; or, the readings obtained from the panel.

The Waukesha F3514GSI engine has a rating of 740 hp. It is expected that the performance test will be conducted within ±10% of 100% peak, or the highest achievable load.

3.9 Test Methods
Oasis Emission Consultants, Inc. will employ ASTM D 6348-03 for NOx, CO, VOC and H2O concentration measurement. All test methods that we intend to utilize are listed 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. An O2 stratification check will be performed according to 8.1.2 of Method 7E prior to testing to determine sampling location for engines with stack diameters greater than 6 inches, but less than 12 inches. For stacks equal to or greater than 12 inches in diameter, if the sampling port locations meet the minimum Method 1 criterion for distance from disturbances, sampling may be conducted at three points. If sampling ports do not meet Method 1
criterion for distance from disturbances, stacks equal to or greater than 12 inches in diameter will have an O2 stratification check performed to determine sampling locations. An O2 stratification is not required for engines with a stack diameter less than 4 inches.
12
 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, to approximate the average dry volumetric flow rate.
 EPA 40 CFR 60 Appendix A, Method 3: Method 3 provides the means to calculate the dry molecular weight of the effluent gas. After passing through a gas condenser, O2 and CO2 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.
 ASTM D 6348-03: NOx, CO, VOC and H2O concentrations are obtained by running the engine exhaust through a heated sample line (191 deg C) to an MKS 2030 FTIR analyzer.
When a gas sample is introduced in the gas cell, the infrared beam is partially absorbed by
the gas species present. The spectral frequencies absorbed and their intensity are due to the atoms associated with the chemical bond and the strength of that bond. The absorption spectrum is unique for each infrared-active gas. The MKS FTIR analyzer measures the absorption spectrum, and its analysis algorithm measures the concentration of each gas
using pre-loaded calibrations. The MG2000 software allows for the continuous
measurement, display and recording of the sample stream.

APPENDIX A

Example Calculations:

The following is a step-by-step example of the calculations that will be utilized for each test run.

Test Parameters  Stack Diameter  Traverse Points  Ports
 Barometric Pressure  Average O2  Average CO2  Load Approximation  Moisture Content

EPA 40 CFR 60(A) Methods 1-3: Determination of Stack Gas Velocity and Flow Rate 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)

Conversion of Dry Flowrate to m3/hr= Q * 60 * 2.83168*10 -2
Where:
Q – Volumetric Flowrate
2.83168*10 -2 – Conversion factor for cubic feet to cubic meter 60 – Minutes in an hour

ASTM D 6348-03: Determination of NOx, CO & VOC Emissions From Stationary Sources

NOx Emission Rate (g/Bhp-hr) = (Cd * 1.912*10 -3 * Q * T) / HP-hr
Where:
NOx – Nitrogen Oxides Cd – Measured NOx concentration in ppm
1.92*10 -3 - Conversion constant for ppm to g/m3 NOx
Q – Volumetric Flowrate
T – Time in Hours of Test Run = 1 hr
HP-hr – Unit Brake Horsepower
NOx Emission Rate (lbs/hr) = g/Bhp-hr / 454 * Bhp
Where:
NOx – Nitrogen Oxides
g/Bhp-hr – Grams per brake horsepower-hour 454 – Conversion factor for g to lbs
Bhp - Unit Brake Horsepower
NOx Correction to 15% O2 = PPMO * (20.9 – 15) / (20.9 – O2)
Where:
NOx – Nitrogen Oxides
PPMO – Average concentration of corrected pollutant at outlet (ppm) O2 – Average oxygen concentration in exhaust stream (%)

CO Emission Rate (g/Bhp-hr) = (Cd * 1.164*10 -3 * Q * T) / HP-hr
Where:
CO – Carbon Monoxide
Cd – Measured CO concentration in ppm 1.164*10 -3 - Conversion constant for ppm to g/m3 CO
Q – Volumetric Flowrate
T – Time in Hours of Test Run = 1 hr HP-hr – Unit Brake Horsepower
CO Emission Rate (lbs/hr) = g/Bhp-hr / 454 * Bhp

Where: CO – Carbon Monoxide
g/Bhp-hr – Grams per brake horsepower-hour
454 – Conversion factor for g to lbs Bhp - Unit Brake Horsepower

CO Emission Rate to 15% O2 = PPMO * (20.9 – 15) / (20.9 – O2)
Where:
CO – Carbon Monoxide PPMO – Average concentration of corrected pollutant at outlet (ppm)
O2 – Average oxygen concentration in exhaust stream (%)
VOC Emission Rate (g/Bhp-hr) = (Cd * 1.833*10 -3 * Q * T) / HP-hr
Where:
VOC – Volatile Organic Compounds
Cd – Measured VOC concentration in ppm 1.833*10 -3 - Conversion constant for ppm to g/m3 VOC
Q – Volumetric Flowrate
T – Time in Hours of Test Run HP-hr – Unit Brake Horsepower
VOC Emission Rate (lbs/hr) = g/Bhp-hr / 454 * Bhp

Where: VOC – Volatile Organic Compounds
g/Bhp-hr – Grams per brake horsepower-hour
454 – Conversion factor for g to lbs Bhp - Unit Brake Horsepower
VOC Emission Rate to 15% O2 = PPMO * (20.9 – 15) / (20.9 – O2)

Where: VOC – Volatile Organic Compounds (NMNEHC C3)
PPMO – Average concentration of corrected pollutant at outlet (ppm)
O2 – Average oxygen concentration in exhaust stream (%)

APPENDIX B

CERTIFICATE OF ANALYSIS
Grade of Product: EPA PROTOCOL STANDARD
Part Number: E05NI99E15A0000 Reference Number: 153-402929684-1
Cylinder Number: CC476336 Cylinder Volume: 144.0 CF
Laboratory: 124 - Tooele (SAP) - UT Cylinder Pressure: 2015 PSIG
PGVP Number: B72024 Valve Outlet: 660
Gas Code:CH4,CO,NO,NOX,PPN,BALN Certification Date: Jan 11, 2024
Expiration Date:Jan 11, 2032
Certification performed in accordance with “EPA Traceability Protocol for Assay and Certification of 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 significant impurities which affect the use of this calibration mixture. All concentrations are on a
mole/mole basis unless otherwise noted. The results relate only to the items tested. The report shall not be reproduced except in full without approval of the laboratory. Do
Not Use This Cylinder below 100 psig, i.e. 0.7 megapascals.
ANALYTICAL RESULTS
Component Requested Actual Protocol Total Relative Assay
Concentration Concentration Method Uncertainty Dates
NOX 500.0 PPM 512.1 PPM G1 +/- 1.0% NIST Traceable 01/04/2024, 01/11/2024
CARBON MONOXIDE 500.0 PPM 503.4 PPM G1 +/- 0.7% NIST Traceable 01/04/2024
METHANE 500.0 PPM 502.4 PPM G1 +/- 0.7% NIST Traceable 01/04/2024
NITRIC OXIDE 500.0 PPM 511.8 PPM G1 +/- 1.0% NIST Traceable 01/04/2024, 01/11/2024
PROPANE 500.0 PPM 499.3 PPM G1 +/- 0.7% NIST Traceable 01/05/2024
NITROGEN Balance
CALIBRATION STANDARDS
Type Lot ID Cylinder No Concentration Uncertainty Expiration Date
NTRM 15060543 CC453965 491.9 PPM CARBON MONOXIDE/NITROGEN 0.6 Mar 05, 2027
PRM 12409 D913660 15.01 PPM NITROGEN DIOXIDE/AIR 1.5%Feb 17, 2023
NTRM 08011609 K020818 496.5 PPM METHANE/NITROGEN 0.6%Aug 08, 2024
NTRM 22060727 CC745222 495.3 PPM NITRIC OXIDE/NITROGEN 0.9%Apr 26, 2026
GMIS 1534012021103 ND73012 4.956 PPM NITROGEN DIOXIDE/NITROGEN 1.6%Jun 15, 2025
NTRM 12010921 ND46380 487 PPM PROPANE/AIR 0.6%Apr 24, 2024
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/Model Analytical Principle Last Multipoint Calibration
Nicolet iS50 AUP2110269 CO MCO FTIR Dec 14, 2023
Nicolet iS50 AUP2110269 CH4 M1CH4 FTIR Dec 20, 2023
Nicolet iS50 AUP2110269 NO MNO FTIR Dec 28, 2023
Nicolet iS50 AUP2110269 NO2 impurity FTIR NO2 impurity Jan 02, 2024
MKS FTIR C3H8 018143349 FTIR Dec 13, 2023
Triad Data Available Upon Request
Airgas Specialty Gases
Airgas USA LLC
525 North Industrial Loop Road
Tooele, UT 84074
Airgas.com
Signature on file
Approved for Release Page 1 of 1
SAMPLE
CERTIFICATE OF ANALYSIS
Grade of Product: EPA PROTOCOL STANDARD
Part Number: E02AI99E15W0077 Reference Number: 153-403129510-1
Cylinder Number: CC511432 Cylinder Volume: 146.0 CF
Laboratory: 124 - Tooele (SAP) - UT Cylinder Pressure: 2015 PSIG
PGVP Number: B72024 Valve Outlet: 660
Gas Code:NO2,O2,BALN Certification Date: Sep 12, 2024
Expiration Date:Sep 12, 2027
Certification performed in accordance with “EPA Traceability Protocol for Assay and Certification of 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 significant impurities which affect the use of this calibration mixture. All concentrations are on a
mole/mole basis unless otherwise noted. The results relate only to the items tested. The report shall not be reproduced except in full without approval of the laboratory. Do
Not Use This Cylinder below 100 psig, i.e. 0.7 megapascals.
ANALYTICAL RESULTS
Component Requested Actual Protocol Total Relative Assay
Concentration Concentration Method Uncertainty Dates
NITROGEN DIOXIDE 150.0 PPM 147.5 PPM G1 +/- 2.0% NIST Traceable 09/05/2024, 09/12/2024
AIR Balance
CALIBRATION STANDARDS
Type Lot ID Cylinder No Concentration Uncertainty Expiration Date
GMIS 1534022022604 CC517948 102.2 PPM NITROGEN DIOXIDE/NITROGEN 1.1%Nov 21, 2026
PRM 12436 D153567 197.5 PPM NITROGEN DIOXIDE/AIR 0.9%Nov 15, 2025
GMIS 1534022022705 CC517985 193.7 PPM NITROGEN DIOXIDE/NITROGEN 1.0%Nov 15, 2026
PRM 12437 D153544 98.8 PPM NITROGEN DIOXIDE/AIR 1.0%Nov 21, 2024
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/Model Analytical Principle Last Multipoint Calibration
MKS FTIR NO2 018143349 FTIR Sep 11, 2024
Triad Data Available Upon Request
Airgas Specialty Gases
Airgas USA LLC
525 North Industrial Loop Road
Tooele, UT 84074
Airgas.com
Signature on file
Approved for Release Page 1 of 1
SAMPLE
CERTIFICATE OF ANALYSIS
Grade of Product: PRIMARY STANDARD
Part Number:X02NI99P15AD524 Reference Number: 153-403066999-1
Cylinder Number: ALM033690 Cylinder Volume:144.4 CF
Laboratory:124 - Tooele (SAP) - UT Cylinder Pressure:2015 PSIG
Analysis Date:Jun 17, 2024 Valve Outlet:350
Lot Number:153-403066999-1
Expiration Date: Jun 17, 2027
Primary Standard Gas Mixtures are traceable to N.I.S.T. weights and/or N.I.S.T. Gas Mixture reference materials.
ANALYTICAL RESULTS
Component Req Conc Actual Concentration Analytical
(Mole %)Uncertainty
ETHYLENE 100.0 PPM 99.28 PPM +/- 1%
NITROGEN Balance
Airgas Specialty Gases
Airgas USA LLC
525 North Industrial Loop Road
Tooele, UT 84074
Airgas.com
Signature on file
Approved for Release Page 1 of 1
SAMPLE