DAQ-2025-002500

1

DAQC-461-25
Site ID 13079 (B4)

MEMORANDUM

TO: STACK TEST FILE – MOUNTAINWEST PIPELINE, LLC – Blind Canyon
Compressor Station – Duchesne County

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

FROM: Kyle Greenberg, Environmental Scientist

DATE: May 14, 2025

SUBJECT: Source: Turbine T-1
Location: Remote Location on West Tavaputs Plateau, Myton, UT
Contact: Dani Baldwin: 801-201-0595
Tester: Oasis Emission Consultants, Inc.
Site ID #: 13079
Permit/AO #: DAQE-AN130790006-12, dated April 2, 2012
Subject: Review of Pretest Protocol dated May 13, 2025
On May 14, 2025, Utah Division of Air Quality (DAQ) received a protocol for testing of Turbine T-1 at
Blind Canyon Compressor Station in Duchesne County, Utah. Testing will be performed on July 8, 2025,
to determine compliance with the emission limits found in condition II.B.2 of DAQE-AN130790006-12
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 stack gas velocity and volumetric flow rate: 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
7. RM 19 used to determine exhaust effluent flows and mass emission rates: OK

DEVIATIONS: None

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

RECOMMENDATION: The methods proposed in the protocol are applicable to determine
compliance with the AO and KKKK emission limits.

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

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

Approval Order # DAQE-AN130790006-12
& EPA 40 CFR 60 (NSPS), Subpart KKKK

Turbine: Solar Centaur 50
Unit ID: T-1

MountainWest Pipeline, LLC
Blind Canyon Compressor Station,
Duchesne County, Utah

May 13, 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 50 TURBINE
UNIT ID: T-1
COMPLIANCE TEST PROTOCOL
MOUNTAINWEST PIPELINE, LLC
BLIND CANYON COMPRESSOR STATION / DUCHESNE COUNTY / UTAH

Name: Shawna O’Brien______ Date: May 13th, 2025
Title: Sr. Environmental Scientist Company: Oasis Emission Consultants, Inc.
Signature:

________________________________________________ __________________
Jean Semborski Date
Environmental Specialist
MountainWest Pipeline, LLC Utah / Colorado

Jean Semborski 05/13/2025
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 Permitted Limits and Standards................................................................................................6
3.1.1 UDEQ AO # DAQE-AN130790006-12 Limits...........................................................................6
3.1.2 NSPS Subpart KKKK Standard....................................................................................7
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...............................................................................................7
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

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1.0 Introduction

The purpose of this document is to provide relevant information pertaining to proposed source
emissions testing at MountainWest Pipeline, LLC’s Blind Canyon Compressor Station in Duchesne
County, Utah. Emissions testing will be conducted in accordance with the Utah Department of
Environmental Quality (UDEQ) Approval Order # DAQE-AN130790006-12 (Issuance Date: April 2,
2012) and in accordance with EPA 40 CFR 60 (NSPS), Subpart KKKK.

The emission test is being conducted following a permanent like-kind turbine core replacement on the
Solar Centaur 50 turbine (Unit ID: T-1). Testing will be conducted by Oasis Emission Consultants, Inc.
1.1 Test Program Organization

Approval Order No.: DAQE-AN130790006-12
Federal Regulation: NSPS Subpart KKKK

Facility / Location: Blind Canyon Compressor Station (Site ID: 13079) The Blind Canyon Compressor Station is located north of Price
in Duchesne County, Utah.
UTM Coordinates: 641,178 m Easting, 4,492,171 m Northing, UTM Zone 12

Unit IDs: T-1: Solar Centaur 50 The Blind Canyon Compressor Station Unit T-1 is identified as
Turbine T-1 in UDEQ Approval Order (AO) # DAQE-AN130790006-12
Section II.A.2. The turbine is subject to the requirements of NSPS
Subpart KKKK.

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

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1.2 Test Project Objective(s)

The purpose of the source emissions compliance demonstration is to satisfy the
requirements of the UDEQ AO # DAQE-AN130790006-12 (Issuance Date: April 2,
2012) and NSPS Subpart KKKK. The Solar Centaur 50 turbine (Unit ID: T-1) is being
tested following a permanent like-kind turbine core replacement.

As required by the UDEQ AO # DAQE-AN130790006-12 Condition II.B.2.a.1, testing to
demonstrate compliance will be conducted for nitrogen oxides (NOx) and carbon
monoxide (CO) according to EPA Test Methods 1-4, 7E and 10. Oxygen will be
measured to allow for NOx emission levels to be corrected to 15% O2. NOx compliance
testing will be conducted in accordance with 40 CFR 60.4400.

Three, one hour test runs will be conducted on the Solar Centaur 50 turbine (T-1) to
demonstrate compliance with NOx and CO permitted limits and the NSPS Subpart
KKKK standard for NOx.

The Solar Centaur 50 turbine has a manufacture rating of 4,540 horsepower (hp) and a
site rating range of 3,817 hp to 4,822 hp. The manufacturer's rating and the site rating
range are permitted in the UDEQ AO # DAQE-AN130790006-12. In accordance with 40
CFR 60.4400(b), emissions 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.

Process parameters expected to be collected during the performance testing include, but
are not limited to: atmospheric pressure, atmospheric temperature, fuel pressure,
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 Blind Canyon Compressor Station in
Duchesne County, Utah. The Blind Canyon Compressor Station is utilized to boost the
line pressure to accommodate additional gas flow through the pipeline. The natural gas
enters the station through a valve on the main pipeline and flows through various filters
and vortex separators to remove liquids and other impurities (slugs) prior to compression.
The filtered and separated impurities from the pipeline are pumped to one of the on-site
condensate storage tanks. After filtering, the natural gas flows to the compressor engines
where it is compressed to increase the pressure of the gas. The temperature of the gas also
increases upon compression. Therefore, after compression the gas flows through an after
cooler to be cooled to pipeline temperate prior to being reintroduced to the main pipeline.
Natural gas from the main pipeline is used to power the on-site compressors and
generators. The generators provide power for the facility and as such, are not considered
emergency backup generators.

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The compliance emission test will be conducted on Solar Centaur 50 turbine identified as
T-1 in UDEQ AO # DAQE-AN130790006-12 Section II.A.2.
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 July 8, 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 (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.

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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.
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 50 turbine is to demonstrate
compliance for NOx and CO with permit limits and the NSPS Subpart KKKK standard
for NOx. The permitted limits and Subpart KKKK standard can be found in the following
tables.
3.1.1 UDEQ AO # DAQE-AN130790006-12 Limits

Table 2: Source Summary and Permitted Limitations.
*The serial number will be provided in the test report if currently unavailable.
**The site rating range is derived from UDEQ AO # DAQE-AN130790006-12 and is determined based on
the altitude and site conditions. Therefore, this is the approved range for the turbine load. 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).

Unit ID Source* Size
Manufacture
Rating
Site
Rating*
Annual
Consumption
Permit NOx Permit CO
T-1 Solar Centaur
50 turbine
4,540 hp 3,817 hp to
4,822 hp
314.32 MMSCF 3.97 lb/hr 4.83 lb/hr
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3.1.2 NSPS Subpart KKKK Standard

Table 3: NSPS Subpart KKKK NOx Standard.

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/syste
m/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/curr
ent/title-40/chapter-
I/subchapter-C/part-
60/subpart-KKKK

Unit ID Source NOx Standard
T-1 Solar Centaur 50
turbine
25 ppmvd @ 15% O2
8

U.S. Environmental Protection Agency. “EMC Promulgated Test Methods.” Air Emission
Measurement Center (EMC). 22 April 2025. Web. 13 May 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. 9 May 2025. Web. 13 May 2025.
<https://ecfr.federalregister.gov/current/title-40/chapter-I/subchapter-C/part-60/subpart-KKK>.
3.3 Stack Sampling Location

The inner exhaust stack diameter for the Solar Centaur 50 turbine (T-1) was previously
measured as 36 inches. The sampling ports moisture, flow, NOx and CO measurements
are approximately 3.3 pipe diameters downstream from the nearest flow disturbance and
1.0 pipe diameter 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. The final measurements/dimensions will be
included in the test report. 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 50 turbine (T-1) 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.

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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 test.

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
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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 50 turbine (T-1) has a size manufacture rating of 4,540 hp and an
approved site rating range of 3,817 hp to 4,822 hp. 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.

3.8 Test Methods

Oasis Emission Consultants, Inc. will employ EPA 40 CFR 60 (A) methods as required
by UDEQ AO # DAQE-AN130790006-12 and in accordance with 40 CFR 60.4400.
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.

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 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
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