HomeMy WebLinkAboutDAQ-2025-0008721
DAQC-147-25
Site ID 16001 (B4)
MEMORANDUM
TO: STACK TEST FILE – KINDER MORGAN ALTAMONT LLC – Farm
Compressor Station
THROUGH: Rik Ombach, Minor Source Oil and Gas Section Manager
FROM: Paul Bushman, Environmental Scientist
DATE: February 6, 2025
SUBJECT: Source: Engines C-1, C-2, C-3, C-4, C-5, C-6, C-7, and C-8
Location: Remote location in Duchesne County, Utah
Contact: Brittany Brumley – 713-420-6314
Tester: Kinder Morgan Emissions Testing Group
Site ID #: 16001
Permit/AO #: DAQE-AN160010006-23, dated August 1, 2023
Subject: Review of Pretest Protocol dated February 4, 2025
On February 5, 2025, Utah Division of Air Quality (DAQ) received a test notification for the testing of
the above listed units located at the Farm Compressor Station in Duchesne County, Utah. Testing will be
performed during the weeks of March 17, 2025, and March 24, 2025, to determine compliance with the
emission limits found in condition II.B.2 of Approval Order DAQE-AN160010006-23 and 40 CFR Part
60, Subpart JJJJ.
PROTOCOL CONDITIONS:
1. RM 1 used to determine sample velocity traverses: OK
2. RM 3A used to determine dry molecular weight of the gas stream: OK
3. RM 4 used to determine moisture content: OK
4. RM 7E used to determine NOx emissions: OK
5. RM 10 used to determine CO emissions: OK
6. RM 19 used to determine exhaust effluent flows and mass emission rates: OK
7. ASTM D6348-03 used to determine VOC emissions: OK
DEVIATIONS: No deviations stated in the protocol.
CONCLUSION: The protocol appears to be acceptable.
RECOMMENDATION: Send protocol review and test date confirmation notice.
ATTACHMENTS: Kinder Morgan Altamont test notification letter and protocol.
_________________________________________________________________________________
Electronic Submittal
February 4, 2025
Rik Ombach, Manager
Minor Source Compliance Section
Utah Division of Air Quality
195 North 1950 West, 4th Floor
Salt Lake City, UT 84116
Re: Kinder Morgan Altamont LLC
Farm Compressor Station, Approval Order DAQE-AN160010006-23
Emission Test Notification and Protocol: Engines C-1, C-2, C-3. C-4. C-5, C-6, C-7 & C-8
Dear Mr. Ombach,
Kinder Morgan Altamont LLC (Kinder Morgan) is submitting this written notification to conduct
compliance testing on engines C-1, C-2, C-3. C-4. C-5, C-6, C-7, and C-8 at its Farm Compressor Station
(Farm) located in Duchesne County, Utah. Operation of the subject engines and associated air pollution
control equipment is authorized under Approval Order DAQE-AN160010006-23 (AO) on August 1, 2023,
by the Utah Division of Air Quality (UDAQ). The proposed emissions testing will be conducted to satisfy
the requirements of the AO, specifically Condition II.B.2 and 40 CFR part 60 subpart JJJJ, Standards of
Performance for Stationary Spark Ignition Internal Combustion Engines (NSPS JJJJ). Kinder Morgan
proposes to conduct emission tesing on these engines during the weeks of March 17, 2025 and March
24, 2025, if agreed upon by the UDAQ. The engines are subject to the emissions limits and standards,
listed in the table below.
Engine ID Engine
Description
Emission
Controls Pollutant Emission Limit Basis
C-1
C-2
C-3
C-4
C-5
C-6
Waukesha
L7044GSI S5
AFRC
NSCR
NOx
2.09 lb/hr AO
1.0 g/bhp-hr or
82 ppmvd @ 15% O2 NSPS JJJJ
CO
2.11 lb/hr AO
2.0 g/bhp-hr or 270 ppmvd
@ 15% O2 NSPS JJJJ
Total VOC 1.26 lb/hr AO
VOC 0.7 g/bhp-hr or 60 ppmvd
@ 15% O2 NSPS JJJJ
C-7
C-8
Waukesha
F3524GSI
AFRC
NSCR
NOx
1.3 lb/hr AO
1.0 g/hp-hr or 82 ppmvd
@15% O2 NSPS JJJJ
CO
2.23 lb/hr AO
2.0 g/bhp-hr or 270 ppmvd
@ 15% O2 NSPS JJJJ
Total VOC 0.56 lb/hr AO
VOC 0.7 g/hp-hr or 60 ppmvd
@ 15% O2 NSPS JJJJ
Notes:
1. AFRC stands for Air/Fuel Ratio Controller.
2. For the purpose of compliance with NSPS JJJJ, formaldehyde emissions will not be included when
calculating emissions of volatile organic compounds (VOC).
Due to unforeseen circumstances, there could be changes to the proposed test dates. The UDAQ will be
notified about any schedule changes as soon as possible. During the emission testing, Kinder Morgan will utilize
the attached test protocol.
Please contact me at (713) 420-6314 or via email at Brittany_Brumley@KinderMorgan.com if you have any
questions regarding this letter. Please contact Jarrett Moran at (713) 420-4502 or via email at
Jarrett_Moran@KinderMorgan.com if you have any technical questions related to the attached emission test
protocol.
Sincerely,
Brittany Brumley
EHS Manager
Enclosures – Emissions Test Protocol
cc: Emissions Testing Group File # 25-042
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Emissions Testing Group 1001 Louisiana St., Suite 1000 Houston, TX 77002
Emissions Test Protocol
Six (6) Waukesha L7044 GSI S5 Natural Gas Fired Engines
Two (2) Waukesha F3524 GSI Natural Gas Fired Engines
Units C-1, C-2, C-3, C-4, C-5, C-6, C-7 & C-8
Approval Order Number: DAQE-AN160010006-23 Emissions Testing Group File # 25-042 Scheduled Test Date: Weeks of March 17, 2025 & March 24, 2025
Kinder Morgan Altamont LLC
Farm Compressor Station
Duchesne County, UT
Date: January 16, 2025
Prepared
for:
State of Utah Department of
Environmental Quality
Division of Air Quality
Prepared
by:
Jarrett Moran
Emissions Testing Group
(713) 420-4502
Reviewed
by:
Nathan Liebmann
Emissions Testing Group
(713) 420-3664
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Table of Contents
TABLE OF CONTENTS .............................................................................................................................................. I
INTRODUCTION ........................................................................................................................................................ 1
FACILITY INFORMATION .................................................................................................................................... 3 EMISSIONS GROUP INFORMATION .................................................................................................................. 3
EMISSIONS SAMPLING PROCESS ...................................................................................................................... 4
PROCESS DESCRIPTION ....................................................................................................................................... 4 EMISSIONS TEST VEHICLE.................................................................................................................................. 4 SAMPLING SYSTEM............................................................................................................................................... 4
GENERAL TESTING PROCEDURE ...................................................................................................................... 6
EPA REFERENCE AND ASTM METHODS ........................................................................................................ 6 METHOD 1 ............................................................................................................................................................... 6 METHOD 3A ............................................................................................................................................................ 6 METHOD 4 ............................................................................................................................................................... 7 METHOD 7E ............................................................................................................................................................. 7 METHOD 10 ............................................................................................................................................................. 7 METHOD 19 ............................................................................................................................................................. 7 ASTM D6348 ......................................................................................................................................................... 8 INSTRUMENT CHECKS AND CALIBRATIONS ............................................................................................... 8 EPA PROTOCOL GASES (40CFR60, APPENDIX A – M7E.7.1) .............................................................................. 8 INTERFERENCE RESPONSE (40CFR60, APPENDIX A – M7E.8.2.7) ....................................................................... 8 ANALYZER CALIBRATION ERROR TEST (40CFR60, APPENDIX A – M7E.8.2.3) ................................................. 8 NO2 TO NO CONVERSION EFFICIENCY (40CFR60, APPENDIX A – M7E.8.2.4) ................................................... 8 SAMPLE LINE LEAK CHECK .................................................................................................................................... 9 RESPONSE TIME TEST (40CFR60, APPENDIX A – M7E.8.2.6) .............................................................................. 9 SYSTEM BIAS CHECK (40CFR60, APPENDIX A – M7E.8.2.5 & M7E.8.5) ........................................................... 9 VOC AND CH2O DETERMINATION ...................................................................................................................... 10 EMISSIONS TESTING ........................................................................................................................................... 12 SAMPLE LOCATION AND SET-UP .......................................................................................................................... 12 DETERMINATION OF STRATIFICATION (40CFR60, APPENDIX A – M7E.8.1.2) .................................................. 12 FUEL GAS ANALYSIS ............................................................................................................................................ 12 COMPLIANCE TEST RUNS ..................................................................................................................................... 13 TEST REPORT ......................................................................................................................................................... 13
CALCULATIONS ...................................................................................................................................................... 14
CONCENTRATION CORRECTION .................................................................................................................... 14 EPA F-FACTOR ...................................................................................................................................................... 15 15% OXYGEN CORRECTION ............................................................................................................................. 15 MASS EMISSION CALCULATIONS, METHOD 19 ......................................................................................... 16 ASTM D6348 EQUATIONS .................................................................................................................................. 17 MINIMUM DETECTABLE CONCENTRATION .......................................................................................................... 17 REFERENCE CELL ABSORPTION PATH LENGTH ................................................................................................... 18 SAMPLE CELL ABSORPTION PATH LENGTH ......................................................................................................... 19 ANALYTE SPIKING ................................................................................................................................................ 19 WET – DRY POLLUTANT CONCENTRATION CORRECTION .................................................................................. 21 VOC CALCULATIONS BY RESPONSE FACTORS .................................................................................................... 21
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List of Figures
Figure 1: Sample System Schematic ........................................................................................................................... 5
List of Tables
Table 1: Engine Detail .................................................................................................................................................. 1 Table 2: Emission Units and Requirements .............................................................................................................. 2 Table 3: Available Instrumentation ............................................................................................................................ 5 Table 4: Unit Conversion Factors ............................................................................................................................. 16
List of Equations
Equation 1: Bias Correction Calculation ................................................................................................................. 14 Equation 2: EPA Fuel Specific Fd factor ................................................................................................................. 15 Equation 3: Emissions Corrected to 15% Oxygen ................................................................................................. 15 Equation 4: Mass Emission Rate (lb/hr) .................................................................................................................. 16 Equation 5: Mass Emission Rate (g/bhp-hr) ........................................................................................................... 16 Equation 6: Noise Limited Minimum Detectable Concentration #1 ................................................................... 17 Equation 7: Analytical Minimum Detectable Concentration #2 .......................................................................... 17 Equation 8: Analytical Minimum Detectable Concentration #3 .......................................................................... 18 Equation 9: Reference Cell Path Length ................................................................................................................. 18 Equation 10: Sample Cell Path Length .................................................................................................................... 19 Equation 11: Dilution Factor ..................................................................................................................................... 19 Equation 12: Expected Spike Concentration .......................................................................................................... 20 Equation 13: Spike Recovery, Percent ..................................................................................................................... 20 Equation 14: Moisture Corrected Concentration .................................................................................................. 21 Equation 15: VOC as Methane by Response Factors ............................................................................................ 21 Equation 16: VOC as Propane .................................................................................................................................. 21 Equation 17: Total VOC for Approval Order Permit Limits .............................................................................. 21
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Introduction
The Company’s Emissions Testing Group (ETG) will be conducting source emissions
testing at the Kinder Morgan Altamont LLC Farm Compressor Station in fulfillment of the
State of Utah Department of Environmental Quality (UDEQ) Approval Order Number
DAQE-AN160010006-23. The purpose of this test is to demonstrate compliance with
permitted emission limits and 40CFR60 Subpart JJJJ for the units listed below.
Table 1 and Table 2 present the emission units and species to be measured during the
testing along with applicable permit limits. All testing will be conducted in accordance with
Environmental Protection Agency (EPA) test methods as described in 40CFR60, Appendix
A, and this test protocol.
Concentrations of Volatile Organic Compounds (VOC) and Formaldehyde (CH2O) will be
determined using an FTIR following ASTM D6348 as allowed by 40CFR60 Subpart JJJJ.
Non-methane non-ethane VOC will be reported on a propane basis. Formaldehyde
emissions will be excluded for the purpose of compliance demonstration with 40CFR60
Subpart JJJJ standards (VOC) but will be included for the purpose of compliance with VOC
permit limits (Total VOC).
The testing is tentatively scheduled for the weeks of March 17, 2025 and March 24, 2025
if agreed upon by the UDEQ. The ETG will provide as much notice as possible to any
changes in this schedule.
Table 1: Engine Detail
Unit Name (Permit ID) Serial Number Manufacturer Model Catalyst Type Type Horsepower MFG Date
C-1 3191150 Waukesha L7044GSI S5 NSCR 4SRB 1900 @ 1200 RPM 19-Aug
C-2 3191146 Waukesha L7044GSI S5 NSCR 4SRB 1900 @ 1200 RPM 19-Jul
C-3 5283706047 Waukesha L7044GSI S5 NSCR 4SRB 1900 @ 1200 RPM 19-Jun
C-4 5283706049 Waukesha L7044GSI S5 NSCR 4SRB 1900 @ 1200 RPM 19-Jun
C-5 5283706048 Waukesha L7044GSI S5 NSCR 4SRB 1900 @ 1200 RPM 19-Jun
C-6 3271473 Waukesha L7044GSI S5 NSCR 4SRB 1900 @ 1200 RPM 19-Jun
C-7 5283706056 Waukesha F3524 GSI NSCR 4SRB 829 19-Jun
C-8 5283706082 Waukesha F3524 GSI NSCR 4SRB 829 19-Jul
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Table 2: Emission Units and Requirements
Unit Name (Permit ID) Emission Species Applicable Test Method Applicable Limits Permit Basis
C-1 C-2 C-3 C-4 C-5 C-6
NOX EPA Method 7E
2.09 lb/hr Approval Order No. DAQE-AN160010006-23
1.0 g/bhp-hr or 82 ppmvd @ 15% O2 40CFR60 Subpart JJJJ
CO EPA Method 10
2.11 lb/hr Approval Order No. DAQE-AN160010006-23
2.0 g/bhp-hr or 270 ppmvd @ 15% O2 40CFR60 Subpart JJJJ
VOC ASTM D6348 0.7 g/bhp-hr or 60 ppmvd @ 15% O2 40CFR60 Subpart JJJJ
Total VOC ASTM D6348 1.26 lb/hr Approval Order No. DAQE-AN160010006-23
C-7 C-8
NOX EPA Method 7E
1.3 lb/hr Approval Order No. DAQE-AN160010006-23
1.0 g/bhp-hr or 82 ppmvd @ 15% O2 40CFR60 Subpart JJJJ
CO EPA Method 10
2.23 lb/hr Approval Order No. DAQE-AN160010006-23
2.0 g/bhp-hr or 270 ppmvd @ 15% O2 40CFR60 Subpart JJJJ
VOC ASTM D6348 0.7 g/bhp-hr or 60 ppmvd @ 15% O2 40CFR60 Subpart JJJJ
Total VOC ASTM D6348 0.56 lb/hr Approval Order No. DAQE-AN160010006-23
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FACILITY INFORMATION
Facility: Kinder Morgan Altamont LLC Farm Compressor Station Township 3S Range 2W Section 17 Duchesne County, UT GPS Coordinates: LAT 40.22197 LONG -110.13076
Contact: Erin Dunman Air Compliance 1667 Cole Blvd Suite 300 Lakewood, CO 80401 Erin_Dunman@kindermorgan.com (303) 914-7605
EMISSIONS GROUP INFORMATION
Facility: Emissions Testing Group 1001 Louisiana St., Suite 1000 Houston, TX 77002
Contact: Jarrett Moran Emissions Testing Group Jarrett_Moran@kindermorgan.com (713) 420-4502
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Emissions Sampling Process
PROCESS DESCRIPTION
The Waukesha L7044 GSI S5 (1,900 hp) and F3524 GSI (829 hp) reciprocating compressor engines are four stroke, rich burn, natural gas fired internal combustion engines, equipped with an NSCR catalyst, driving gas compressors. The energy released during the combustion process drives gas compressors, raising the pressure of the incoming gas from an initial “suction” state to a more compressed “discharge” state. EMISSIONS TEST VEHICLE
The ETG has conducted emission tests on reciprocating engines and turbines for many
years. This testing experience has enabled the ETG to design and assemble an accurate
and versatile emissions test vehicle (ETV). The ETV is one of three environmentally
controlled box trailers housing all analyzers, computers and auxiliary equipment.
A Data Acquisition Control System (DACS) scans instrument outputs and the data is
transferred to a computer for analysis and storage. The computer monitors the readings in
real-time and outputs the data averages to a video monitor and the hard drive. The readings
are recorded and represented in Central Standard Time (CST) due to our headquarters
located in Houston, Texas.
SAMPLING SYSTEM
Continuous analyzers will be used to determine the oxides of nitrogen (NOx), carbon monoxide (CO), non-methane, non-ethane, excluding formaldehyde volatile organic compounds (VOC), formaldehyde (CH2O) and oxygen (O2) emission concentrations. Available instrumentation and analyzers are listed in Table 3. Brand names and specific models are for reference only and instruments of equal nominal performance may be substituted from time to time.
Exhaust gas enters the system through a stainless steel probe and a 3-way sample valve assembly. The sample is transported via a heat-traced Teflon sample line through a stainless steel sample pump and into a minimum contact condenser specially designed to dry the sample. The sample is then passed through 3/8" Teflon tubing to a Balston Microfiber coalescing filter and then to the sample manifold. The sample manifold is maintained at a constant pressure by means of a pressure bypass regulator. Stainless steel needle valves control the sample flow to each analyzer. See Figure 1 for the flow schematic.
For the FTIR analyzer, the exhaust gas is brought into the trailer through the same stainless steel probe and 3-way sample valve, however, it is next directed through a heated sample line to the FTIR hotbox where the temperature, pressure and flow rate are kept constant by way of a pressure regulator, temperature controller and needle-valve flow meter until the sample enters the analyzer. After the sample has passed through the analyzer, it is purged outside of the trailer. See Figure 1 for the flow schematic.
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Figure 1: Sample System Schematic
Table 3: Available Instrumentation
Parameters Manufacturer Model Detection Principle Range
NOx Thermo Fisher Scientific / Teledyne 42i / T200H Thermal reduction of NO2 to NO. Chemiluminescent reaction of NO with O3 Variable to 10,000 ppm
CO Thermo Fisher Scientific / Teledyne 48i / T300M NDIR with Gas Filter Correlation Variable to 10,000 ppm
VOC / CH2O MAX iR Fourier Transform Infrared Spectroscopy
O2 Servomex 1440 / 4900 Paramagnetic 0 to 25%
Barometric Pressure Rosemount 3051 20 – 31 “Hg
Wet/Dry Temperature Humidity Vaisala Model HMP 233 -40 °F to 140 °F
0% - 100%
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General Testing Procedure
EPA Reference methods as described in 40CFR60, Appendix A, and ASTM D6348
designations will be followed in the conduct of this testing. Calibration and test
procedures are detailed under their respective sections of this protocol. All emission
species will be measured post-catalyst.
Concentrations of NOx will be determined by the procedure described in 40CFR60,
Appendix A, Method 7E. Concentrations of CO will be determined by the procedure
described in 40CFR60, Appendix A, Method 10. Dilution concentration of exhaust
oxygen will be determined by the procedure described in 40CFR60, Appendix A,
Method 3A. Determination of exhaust effluent flow and mass emission rates will be
determined by the procedure in 40CFR60, Appendix A, Method 19.
Concentrations of VOC and CH2O will be determined using an FTIR following ASTM
D6348 as allowed by 40CFR60 Subpart JJJJ.
As with any field-based laboratory procedures, circumstances or complications may
from time to time require unforeseen adjustments or accommodations which will affect
the data collection process, but not materially affect the quantified data – any changes
so required shall employ best possible engineering judgment to conform as closely to
the letter of the Reference Methods as possible. Additionally, any substantial deviation
from the protocol which might materially affect the quantified outcome of the test shall
be discussed with the UDEQ prior to completion of any affected test and shall be
documented in the ensuing report.
EPA REFERENCE AND ASTM METHODS
METHOD 1
“Sample and Velocity Traverses for Stationary Sources” The objective of Method 1 is
to determine the selection of sampling ports and traverse points for a representative velocity
measurement. Method 1 entails selecting sampling ports at least two stack diameters
downstream and a half diameter upstream from any flow disturbance. Based on the
upstream and downstream measurements of a flow disturbance, a selection of minimum
traverse points will be selected. Method 1 will be performed on each engine. Diagrams will
be found in the test report APPENDIX.
METHOD 3A
“Determination of Oxygen and Carbon Dioxide Concentrations in Emissions from
Stationary Sources (Instrumental Analyzer Procedure)” The objective of Method 3A is to determine the O2 concentrations from the source. Method 3A entails extraction of a gas sample from a stationary source and routing the sample through a conditioning system to an analyzer for the measurement of O2 in percent. Method 3A testing will be performed on each engine for the determination of O2. The calibration error, system bias and system drift data will be within the tolerances of the method. The previously mentioned data and the testing data will be recorded on a DACS. Calibrations and test results will be found in the test report APPENDIX.
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METHOD 4
“Determination of Moisture Content in Stack Gases” The objective of Method 4 is to determine the moisture content of stack gas. Section 16.3 of this method allows the use of an FTIR as an acceptable alternative to determine stack gas moisture.
METHOD 7E
“Determination of Nitrogen Oxides Emissions from Stationary Sources (Instrumental
Analyzer Procedure)” The objective of Method 7E testing is to determine the NOx
concentration from the source. Method 7E entails extraction of a gas sample from a
stationary source and routing the sample through a conditioning system to an analyzer for
the measurement of NOx (NO and NO2) in ppmvd. Method 7E testing will be performed on
each engine for the determination of NOx. The calibration error, system bias and system
drift data will be within the tolerances of the method. The previously mentioned data and
the testing data will be recorded on a DACS. This data and test results will be found in the
test report APPENDIX along with NOx converter check results and calibration gas
certificates.
METHOD 10
“Determination of Carbon Monoxide Emissions from Stationary Sources
(Instrumental Analyzer Procedure)” The objective of Method 10 is to determine the CO
concentrations from the source. Method 10 entails extraction of a gas sample from a
stationary source and routing the sample through a conditioning system to an analyzer for
the measurement of CO in ppmvd. Method 10 testing will be performed on each engine for
the determination of CO. The calibration error, system bias and system drift data will be
within the tolerances of the method. The previously mentioned data and the testing data
will be recorded on a DACS. Calibrations and test results will be found in the test report
APPENDIX.
METHOD 19
“Determination of Sulfur Dioxide Removal Efficiency and Particulate Matter, Sulfur
Dioxide, and Nitrogen Oxide Emission Rates” The objective of Method 19 testing is to
determine the emissions exhaust flow. Method 19 entails a NOx emission rate determined
by an Oxygen-Based F-Factor on a dry basis. An F-Factor is the ratio of gas volume of the
products of combustion to the heat content of the fuel. Method 19 testing will be performed
on each engine for the determination of NOx emission rates if a calibrated fuel meter is
used. The NOx pollutant concentration, dry F-Factor and percent of dry Oxygen
concentration will be collected and calculated for the method. Test results will be found in
the test report APPENDIX along with the emission rate formulas found in Equation 4 and
Equation 5 1
1 The same exhaust flow calculation will be used for CO, VOC and Total VOC.
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ASTM D6348
“Determination of Gaseous Compounds by Extractive Direct Interface Fourier
Transform Infrared (FTIR) Spectroscopy” The objective of ASTM D6348 is to determine the VOC and CH2O concentrations from the source. ASTM D6348 entails extraction of a gas sample from a stationary source and routing the sample through a heated system to an FTIR for measurement. ASTM D6348 testing will be performed on each engine for the determination of VOC and CH2O in ppmvw. The acetaldehyde/tracer or ethylene/tracer spike, recovery analysis and minimum detectible concentration for VOC and CH2O will be within the tolerances of the method. The previously mentioned data and the testing data will be recorded on FTIR software. Calibrations and test results will be found in the test report APPENDIX.
INSTRUMENT CHECKS AND CALIBRATIONS
The following instrument checks and calibrations guarantee the integrity of our sampling
system and the accuracy of our data.
EPA PROTOCOL GASES (40CFR60, APPENDIX A – M7E.7.1)
Calibration sheets for EPA Protocol 1 calibration gases will be available at the test site and will be included in the test report APPENDIX.
INTERFERENCE RESPONSE (40CFR60, APPENDIX A – M7E.8.2.7)
Vendor instrument data concerning interference response in the NOx, CO and O2 analyzers
will be included in the test report APPENDIX.
ANALYZER CALIBRATION ERROR TEST (40CFR60, APPENDIX A – M7E.8.2.3)
The measurement system will be first prepared for use. Each analyzer will be set to the correct response and that response will be recorded by the data acquisition system. A calibration curve will then be established to convert each analyzer’s response to equivalent gas concentrations as introduced to each analyzer. Then zero, mid and high calibration gases will be introduced without adjustment to the analyzers and their responses will be recorded. These linearity checks will be performed daily, and these responses will be considered acceptable if they are within +/- 2 percent of the span. This curve will remain unchanged throughout the test. The analyzer calibration checks (linearity) sheets will be included in the test report APPENDIX.
NO2 TO NO CONVERSION EFFICIENCY (40CFR60, APPENDIX A – M7E.8.2.4)
An NO2 to NO conversion efficiency test will be performed on each day of testing following
the procedure described in 40CFR60, Appendix A, Method 7E Section 8.2.4.1. The results
of the conversion efficiency test will be included in the test report APPENDIX.
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SAMPLE LINE LEAK CHECK
The sample line is leak checked before and after the test by closing the calibration valve assembly while the sample pump is operating. Once the maximum vacuum is reached (approximately 12 - 15 inches of mercury) the valve on the pressure side of the pump is closed (See Figure 1) thus sealing off the vacuum section of the sampling system. The leak tests for each unit will be considered acceptable if the vacuum gauge reading drops by an amount less than 1 inch of mercury over a period of 1 minute. The results of the sample line leak checks will be included in the test report APPENDIX.
RESPONSE TIME TEST (40CFR60, APPENDIX A – M7E.8.2.6)
Before sampling begins, it will be determined if the high-level or mid-level calibration gas
best approximates the emissions and the more appropriate gas will be used as the upscale
gas. A response time test will be performed by first introducing the zero gas into the sample
system at the outlet of the probe until all readings are stable. The calibration valve will then
be switched to sample the upscale gas at the outlet of the probe until a stable reading is
obtained, within 95% of the certified value of the upscale gas. The upscale response time
will be recorded. Next, the low-level gas will be introduced in the same manner as the
upscale gas. Once a stable reading is noted, within 5% of the certified value of the upscale
gas, the downscale response time will be recorded.
This process will be completed once per analyzer to determine upscale and downscale
responses. The greater of the upscale or downscale response will be classified as the
response time and all test points will be monitored for a period of time at least twice the
response time. The results of the response time tests will be included in the test report
APPENDIX.
SYSTEM BIAS CHECK (40CFR60, APPENDIX A – M7E.8.2.5 & M7E.8.5)
Before sampling begins, the upscale gas is determined as mentioned in the Response Time
Test section. The system bias check is conducted once prior to and once following the test
runs of the series and consists of first introducing the NOx analyzer’s upscale gas directly
at the analyzer. The analyzer is allowed to stabilize and the reading noted. The same gas
is introduced at the probe, passing through the entire sample train to the analyzer and the
reading noted. The resulting readings indicate any bias attributed to the sample train. This
process is repeated with the NOX analyzer’s low gas. The bias check is acceptable if the
direct gas reading of the analyzer is within +/- 5% of the complete sample train reading of
the analyzer [per 7E.13.2].
This same procedure is repeated for CO and the O2 analyzers. Sample system bias check
forms will be included in the test report APPENDIX.
Bias checks before and after each test run of the series will be used to determine a low and
upscale drift for the NOx, CO and O2 analyzers. The zero and upscale drift for the test run
period is less than +/- 3 percent of the span value for each of the analyzers [per 7E.13.3].
The system bias (drift) checks sheet for each test will be included in the test report
APPENDIX.
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VOC AND CH2O DETERMINATION
VOC and CH2O concentrations will be determined using ASTM D6348. The
instrumentation for this test program is an MAX-iR FTIR analyzer. To determine compliance with the emission standard, the FTIR will be used to measure the pollutant concentration on
a wet basis then convert the concentration and exhaust flow to a dry basis using the FTIR moisture determined during the run. Target Analytes include but are not limited to:
Acetaldehyde (CH3CHO)2
Carbon Tetraflouride (CF4)3
Water (H2O)
Carbon Dioxide (CO2)
Ethylene (Ethene) (C2H4)4
Acetylene (Ethyne) (C2H2)
Propylene (Propene) (C3H8O2)
Propane (C3H8)
Butane (C4H10)
Formaldehyde (CH2O) Data Quality Objectives Accuracy: The accuracy of the measurements will be ensured by performing analyte spiking, prior to the test series, in which spike recoveries will meet +/- 30% of predicted value (see ASTM D6348 EQUATIONS section below). Precision: The precision of the measurements will be ensured by consecutive
Calibration Transfer Standard (CTS) analysis, performed prior to and following the test series, in which measured values will meet +/- 5% of certified value. Test Runs: Three test runs, each 60 minutes in duration will be collected The QA/QC checks outlined below will be performed on the analyzer.
2 Acetaldehyde will be used as a surrogate for VOC and CH2O during spike and recoveries. 3CF4 will be used as a tracer gas for spiking.
4 Ethylene will be utilized as a Calibration Transfer Standard (CTS).
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Pre-test Analysis:
Minimum Detectable Concentration (MDC) will be determined bycalculating the parameters outlined in Annex A-2 of Method ASTM D6348.
Instrument noise-limited (MDC#1)
Analytical algorithm error (MDC#2)
Analytical algorithm error (MDC#3)
Response time will be determined as required in Section 11 of MethodASTM D6348.
The time required for the residual gases to fall to 5% of their original valuewill be determined.
Analyte spiking will be employed for determining the effectiveness of the
sampling and analytical system for transporting and quantifying the targetanalytes. This technique will follow procedures outlined in Annex A-5 ofMethod ASTM D6348.
System performance parameters will be determined following procedures
outlined in Annex A-6 of Method ASTM D6348.
Noise Equivalent Analysis (NEA)
Line Position
Resolution
Linearity
A commercially prepared spectral library will be utilized for quantification
of collected sample spectra. As such, the resolution, line position andapodization function used for the reference spectra will be the same for
field spectral data.
Field Sampling & Analysis
One pre-test spike recovery analysis will be performed.
A sample system flow schematic is included in Figure 1.
Post-test Analysis
Following data collection, the following checks will be performed again for verification against pre-test values:
NEA
Line Position
Resolution
Additional, a spectral comparison will be performed, for each test run, asidentified in Annex A-8 of Method ASTM D6348
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EMISSIONS TESTING
SAMPLE LOCATION AND SET-UP
A single point probe consisting of 3/8 inch stainless tubing open at one end will be used
to collect the sample. The sampling point in the exhaust stack will be at least eight
stack diameters downstream from any disturbance and at least two stack diameters
upstream from any disturbances as specified in Method 1, 40CFR60, Appendix A. If
these criteria cannot be met, the sample probe will be placed at least two stack
diameters downstream and a half diameter upstream from any flow disturbance
(40CFR60, Appendix A, Mtd 1, 11.1.1) or as needed to ensure a high integrity sample
from each engine’s exhaust.
DETERMINATION OF STRATIFICATION (40CFR60, APPENDIX A – M7E.8.1.2)
A stratification check will be performed on units C-1 through C-8 using the sample probe. Three points on a line passing through the centroidal area will be used, spaced at 16.7%, 50.0% and 83.3% of the measurement line or a matrix system will be set up. The sampling time will be at least twice the system response time at each traverse point.
Engines with Circular Stacks
In order to ascertain the presence or absence of stratification on engines with circular stacks, exhaust concentrations of O2 will be measured at three points on a line passing through the centroidal area of the exhaust duct. If the criterion for a three point stratification test is not met, twelve traverse points will be utilized for the test. The mean concentrations will be used to determine the amount of stratification. If each of the individual traverse point NOx concentrations is within ±5 percent of the mean concentration for all traverse points, or the individual traverse point diluent concentrations differs by no more than ±3ppm or ±0.3 percent CO2 (or O2) from the mean for all traverse points, the gas stream will be considered unstratified and samples will be collected from a single point that most closely matches the mean. If the 0.3% criterion is not met, but the concentration at each traverse point differs from the mean concentration for all traverse points by no more than: ± 0.5% difference of mean concentration, the gas stream will be considered minimally stratified, and samples will be taken from three points, spaced at 16.7%, 50.0% and 83.3% of the measurement line. If the gas stream is found to be stratified because the 0.5% criterion for a 3-point test is not met, twelve traverse points will be utilized for the test, in accordance with Table 1-1 or Table 1-2 of 40CFR60 Appendix A, Method 1.
FUEL GAS ANALYSIS
A fuel gas sample will be taken during the testing. The sample will be analyzed by a
pipeline gas chromatograph. This analysis will give the actual specific gravity and BTU
so that fuel flow and mass emissions can be accurately calculated. The analysis will
be included in the test report APPENDIX.
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COMPLIANCE TEST RUNS
The exhaust gas from the engines will be sampled continuously to determine NOx, CO, VOC, CH2O and O2 concentrations for three (3) individual sixty (60) minute test runs @ 90% of rated (or highest achievable) load. It would be inaccurate to estimate the anticipated production capacity of the engines prior to the day of testing due to the variability in daily pipeline conditions.
Other important parameters such as compressor suction and discharge pressures, engine speed and ambient conditions will be monitored during the test. Catalyst measurements such as inlet catalyst temperature and the pressure drop across the catalyst will be obtained during the test if available.
The data acquisition system will scan the analyzers every second during the test run. The computer will average the outputs every ten seconds and the raw data will be included in the report. A summary of the data, with each test run averaged will be given in the test report APPENDIX.
Any emissions limit exceedance will be reported in accordance with permit and applicable regulatory requirements. If there is an emission limit exceedance, a twenty (20) minute run will be recorded in as found state. After the twenty minute run, corrective actions will take place to resolve the issue. If the issue can’t be resolved, the unit will be shut down and the test will be re-scheduled.
TEST REPORT
The compliance test report will be submitted to the UDEQ within 60 days of test completion.
The ETG will express test results with the same level of precision (values past the decimal
place) as the permit limits are expressed. The test report will follow the general outline of
this test protocol. Data summaries, raw data, calibration sheets, gas analysis, operating
parameters and other relevant information will be contained in the test report APPENDIX.
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Calculations
CONCENTRATION CORRECTION
Emission concentration corrections required in 40CFR60, Appendix A, Method 7E will be
calculated by using the bias check low and upscale values from before and after the test.
The equation is as follows: 𝐶𝐶𝑔𝑔𝑔𝑔𝑔𝑔= (𝐶𝐶̅− 𝐶𝐶𝑜𝑜)𝐶𝐶𝑚𝑚𝑔𝑔𝐶𝐶𝑚𝑚− 𝐶𝐶𝑜𝑜
Equation 1: Bias Correction Calculation
Nomenclature: 𝐶𝐶𝑔𝑔𝑔𝑔𝑔𝑔: Average effluent gas concentration adjusted for bias (ppmvd) 𝐶𝐶̅: Average unadjusted gas concentration indicated by data recorder for the test run (ppmvd) 𝐶𝐶𝑜𝑜: Average of initial & final system calibration bias check responses for the low
calibration gas (ppmv) 𝐶𝐶𝑚𝑚: Average of initial & final system calibration bias check responses for the
upscale calibration gas (ppmv) 𝐶𝐶𝑚𝑚𝑔𝑔: Actual concentration of the upscale calibration gas (ppmv)
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EPA F-FACTOR
A fuel specific Fd factor will be calculated as described in EPA Method 19, “Determination of Sulfur Dioxide Removal Efficiency and Particulate, Sulfur Dioxide and Nitrogen Oxides Emission Rates from Electric Utility Steam Generators” for natural gas. Equation 2 will be used to determine the EPA fuel specific Fd factor. 𝐹𝐹𝑑𝑑=[(3.64 ∙𝐻𝐻𝑤𝑤𝑤𝑤%)+(1.53 ∙𝐶𝐶𝑤𝑤𝑤𝑤%)+(0.14 ∙𝑁𝑁2𝑤𝑤𝑤𝑤%)−(0.46 ∙𝑂𝑂2𝑤𝑤𝑤𝑤%)]𝐺𝐺𝐶𝐶𝐺𝐺𝜌𝜌𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝑔𝑔𝑔𝑔
Equation 2: EPA Fuel Specific Fd factor
Nomenclature: 𝐹𝐹𝑑𝑑: Fuel specific F-factor (dscf/MMBTU) 𝐻𝐻𝑤𝑤𝑤𝑤%: Hydrogen weight percent 𝐶𝐶𝑤𝑤𝑤𝑤%: Carbon weight percent 𝑁𝑁2𝑤𝑤𝑤𝑤%: Nitrogen weight percent 𝑂𝑂2𝑤𝑤𝑤𝑤%: Oxygen weight percent 𝐺𝐺𝐶𝐶𝐺𝐺: Heating value of the fuel (BTU/dscf) 𝜌𝜌𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝐹𝑔𝑔𝑔𝑔: Density of the fuel gas (lb/scf)
15% OXYGEN CORRECTION
The measured concentration of NOX will be corrected to 15% O2 as set forth in 40CFR60, Appendix A, Method 7E. 𝑁𝑁𝑂𝑂𝑋𝑋=𝑁𝑁𝑂𝑂𝑋𝑋 𝑜𝑜𝑜𝑜𝑔𝑔× �5.920.9 −%𝑂𝑂2�
Equation 3: Emissions Corrected to 15% Oxygen
Nomenclature: 𝑁𝑁𝑂𝑂𝑋𝑋: Corrected emission concentration (ppmvd) 5 𝑁𝑁𝑂𝑂𝑋𝑋𝑜𝑜𝑜𝑜𝑔𝑔: Observed emission concentration (ppmvd) %𝑂𝑂2: Observed O2 concentration (%)
5 The same formula is used for CO and VOC
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MASS EMISSION CALCULATIONS, METHOD 19
The F-factor Method and guidance from Part 75 will be used to calculate mass emission rates (lb/hr) and (g/bhp-hr) for NOX, CO, CH2O and VOC. Equation 4 and Equation 5 will be used to determine the mass emission rates. 𝐸𝐸𝑚𝑚=𝐶𝐶𝑑𝑑× 𝐹𝐹𝑑𝑑× 20.9(20.9 −%𝑂𝑂2)× 𝑄𝑄ℎ× 𝐺𝐺𝐶𝐶𝐺𝐺106
Equation 4: Mass Emission Rate (lb/hr) 𝐸𝐸𝑚𝑚=𝐶𝐶𝑑𝑑× 𝐹𝐹𝑑𝑑× 20.9(20.9 −%𝑂𝑂2)× 𝑄𝑄ℎ× 𝐺𝐺𝐶𝐶𝐺𝐺106 × 453.6𝐵𝐵𝐻𝐻𝐵𝐵
Equation 5: Mass Emission Rate (g/bhp-hr)
Nomenclature: 𝐸𝐸𝑚𝑚: Pollutant emission rates (lb/hr and g/bhp-hr) 𝐶𝐶𝑑𝑑: Pollutant concentration (lb/scf) 𝐹𝐹𝑑𝑑: Fuel specific F-factor for dry Cd measurement (dscf/MMBTU) %𝑂𝑂2: Oxygen concentration in percent, measured on a dry basis 𝑄𝑄ℎ: Fuel rate from calibrated AGA compliant meter (scfh) 𝐺𝐺𝐶𝐶𝐺𝐺: Heating value of the fuel (BTU/scf) 𝐵𝐵𝐻𝐻𝐵𝐵: Brake horsepower
The conversion factors in Table 4 will be used to correct the pollutant concentration in ppm to lb/scf:
Table 4: Unit Conversion Factors
To Convert from: To Multiply by:
ppm NOX lb/scf 1.194 x 10-7
ppm CO lb/scf 7.268 x 10-8
ppm C3H8 lb/scf 1.1444 x 10-7
ppm CH2O lb/scf 7.7895 x 10-8
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ASTM D6348 EQUATIONS
MINIMUM DETECTABLE CONCENTRATION 𝑀𝑀𝑀𝑀𝐶𝐶#1 =𝑁𝑁𝐸𝐸𝑁𝑁𝑟𝑟𝑚𝑚𝑔𝑔𝑚𝑚𝑅𝑅𝐸𝐸𝐹𝐹𝑟𝑟𝑚𝑚𝑔𝑔𝑚𝑚∗𝐶𝐶𝑟𝑟𝐹𝐹𝑟𝑟∗𝐿𝐿𝑟𝑟𝐹𝐹𝑟𝑟𝐿𝐿𝑐𝑐𝐹𝐹𝐹𝐹𝐹𝐹
Equation 6: Noise Limited Minimum Detectable Concentration #1
Nomenclature: 𝑀𝑀𝑀𝑀𝐶𝐶#1: Noise limited minimum detectable concentration for analyte m (ppm) 𝑁𝑁𝐸𝐸𝑁𝑁: RMS noise for analyte m 𝑅𝑅𝐸𝐸𝐹𝐹: Root mean square absorbance value obtained on the reference spectrum 𝐶𝐶𝑟𝑟𝐹𝐹𝑟𝑟: Concentration used in generating the reference spectra for analyte m (ppm) 𝐿𝐿𝑟𝑟𝐹𝐹𝑟𝑟: Path length used in generating the reference spectra for analyte m (ppm) 𝐿𝐿𝑐𝑐𝐹𝐹𝐹𝐹𝐹𝐹: Path length of the cell used to perform the measurements (m)
𝑀𝑀𝑀𝑀𝐶𝐶#2 =3 ∗�1𝐵𝐵��𝐶𝐶𝑔𝑔𝑎𝑎𝐹𝐹𝑚𝑚−𝐶𝐶𝑝𝑝𝑚𝑚�2𝑝𝑝
𝑝𝑝=1
Equation 7: Analytical Minimum Detectable Concentration #2
Nomenclature: 𝑀𝑀𝑀𝑀𝐶𝐶#2: Analytical algorithm error minimum detectable concentration for analyte m
(ppm) 𝐵𝐵: Number of sample spectra used 𝐶𝐶𝑔𝑔𝑎𝑎𝐹𝐹: Average concentration for analyte m representing the analytical bias (ppm) 𝐶𝐶𝑝𝑝: Concentration results produced by the analytical algorithm for the analyte m
on spectra P of the set (ppm)
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𝑀𝑀𝑀𝑀𝐶𝐶#3 =𝑅𝑅𝐸𝐸𝑁𝑁𝑟𝑟𝑚𝑚𝑔𝑔𝑚𝑚𝑅𝑅𝐸𝐸𝐹𝐹𝑟𝑟𝑚𝑚𝑔𝑔𝑚𝑚∗𝐶𝐶𝑟𝑟𝐹𝐹𝑟𝑟∗ 𝐿𝐿𝑟𝑟𝐹𝐹𝑟𝑟𝐿𝐿𝑐𝑐𝐹𝐹𝐹𝐹𝐹𝐹
Equation 8: Analytical Minimum Detectable Concentration #3
Nomenclature: 𝑀𝑀𝑀𝑀𝐶𝐶#3: Analytical algorithm error minimum detectable concentration for analyte m (ppm) 𝑅𝑅𝐸𝐸𝑁𝑁: Residual equivalent absorbance for analyte m 𝑅𝑅𝐸𝐸𝐹𝐹: Root mean square absorbance value obtained on the reference spectrum 𝐶𝐶𝑟𝑟𝐹𝐹𝑟𝑟: Concentration used in generating the reference spectra for analyte m (ppm) 𝐿𝐿𝑟𝑟𝐹𝐹𝑟𝑟: Path length used in generating the reference spectra for analyte m (ppm) 𝐿𝐿𝑐𝑐𝐹𝐹𝐹𝐹𝐹𝐹: Path length of the cell used to perform the measurements (m)
REFERENCE CELL ABSORPTION PATH LENGTH 𝐿𝐿𝑟𝑟=𝐿𝐿𝑟𝑟�𝑇𝑇𝑟𝑟𝑇𝑇𝑟𝑟��𝐵𝐵𝑟𝑟𝐵𝐵𝑟𝑟��𝐶𝐶𝑟𝑟𝐶𝐶𝑟𝑟��𝑁𝑁𝑟𝑟𝑁𝑁𝑟𝑟�
Equation 9: Reference Cell Path Length
Nomenclature: 𝐿𝐿𝑟𝑟: Reference cell absorption path length (m) 𝐿𝐿𝑟𝑟: Fundamental CTS absorption path length (m) 𝑇𝑇𝑟𝑟: Absolute temperature of reference CTS gas (R) 𝑇𝑇𝑟𝑟: Absolute temperature of fundamental CTS gas (R) 𝐵𝐵𝑟𝑟: Absolute pressure of reference CTS gas (torr) 𝐵𝐵𝑟𝑟: Absolute pressure of fundamental CTS gas (torr) 𝐶𝐶𝑟𝑟: Concentration of reference CTS gas (torr) 𝐶𝐶𝑟𝑟: Concentration of fundamental CTS gas (torr) �𝐴𝐴𝑟𝑟𝐴𝐴𝑓𝑓�: Ratio of reference CTS absorbance to the fundamental CTS absorbance,
determined by classical least squares
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SAMPLE CELL ABSORPTION PATH LENGTH 𝐿𝐿𝑔𝑔=𝐿𝐿𝑟𝑟�𝑇𝑇𝑔𝑔𝑇𝑇𝑟𝑟��𝐵𝐵𝑟𝑟𝐵𝐵𝑔𝑔��𝐶𝐶𝑟𝑟𝐶𝐶𝑔𝑔��𝑁𝑁𝑔𝑔𝑁𝑁𝑟𝑟�
Equation 10: Sample Cell Path Length
Nomenclature: 𝐿𝐿𝑔𝑔: Sample cell absorption path length (m) 𝐿𝐿𝑟𝑟: Reference CTS absorption path length (m) 𝑇𝑇𝑔𝑔: Absolute temperature of sample CTS gas (R) 𝑇𝑇𝑟𝑟: Absolute temperature of reference CTS gas (R) 𝐵𝐵𝑔𝑔: Absolute pressure of sample CTS gas (torr) 𝐵𝐵𝑟𝑟: Absolute pressure of reference CTS gas (torr) 𝐶𝐶𝑔𝑔: Concentration of sample CTS gas (torr) 𝐶𝐶𝑟𝑟: Concentration of reference CTS gas (torr) �𝐴𝐴𝑠𝑠𝐴𝐴𝑟𝑟�: Ratio of sample CTS absorbance to the reference CTS absorbance,
determined by classical least squares
ANALYTE SPIKING 𝑀𝑀𝐹𝐹=𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇−𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇−𝐷𝐷𝑆𝑆𝐷𝐷𝑆𝑆𝐷𝐷𝐷𝐷
Equation 11: Dilution Factor
Nomenclature: 𝑀𝑀𝐹𝐹: Dilution factor of the spike gas 𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇−𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆: Diluted tracer concentration measured in a spiked sample (ppm) 𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇𝑇−𝐷𝐷𝑆𝑆𝐷𝐷𝑆𝑆𝐷𝐷𝐷𝐷: Tracer concentration measured directly in undiluted spike gas (ppm)
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𝐶𝐶𝐹𝐹𝑒𝑒𝑝𝑝=𝑈𝑈𝑑𝑑𝑑𝑑𝐹𝐹+𝐶𝐶𝐶𝐶
Equation 12: Expected Spike Concentration
Nomenclature: 𝐶𝐶𝐹𝐹𝑒𝑒𝑝𝑝: Expected spike concentration of the analyte (ppm) 𝑈𝑈𝑔𝑔: Concentration of the analytes in the unspiked samples (ppm) 𝑈𝑈𝑑𝑑𝑑𝑑𝐹𝐹: Concentration of analytes in spiked sample effluent accounting for dilution (ppm); Udil = Ua x (1 - DF) 𝐶𝐶𝑔𝑔: Certified concentration of the calibration standard for the analyte (ppm) 𝐶𝐶𝐶𝐶 CS = Cs x DF 𝑀𝑀𝐹𝐹: Dilution factor of the spike gas
𝑅𝑅=𝐶𝐶𝑜𝑜𝑜𝑜𝑔𝑔𝐶𝐶𝐹𝐹𝑒𝑒𝑝𝑝× 100
Equation 13: Spike Recovery, Percent
Nomenclature: 𝑅𝑅: Percent spike recovery (%) 𝐶𝐶𝑜𝑜𝑜𝑜𝑔𝑔: Observed spike concentration of the analyte (ppm) 𝐶𝐶𝐹𝐹𝑒𝑒𝑝𝑝: Expected spike concentration of the analyte (ppm)
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WET – DRY POLLUTANT CONCENTRATION CORRECTION 𝐶𝐶𝑑𝑑=𝐶𝐶𝑚𝑚𝐹𝐹𝑔𝑔𝑔𝑔1 −�%𝐻𝐻2𝑂𝑂100 �
Equation 14: Moisture Corrected Concentration
Nomenclature: 𝐶𝐶𝑑𝑑: Corrected pollutant concentration on a dry basis (ppmvd) 𝐶𝐶𝑚𝑚𝐹𝐹𝑔𝑔𝑔𝑔: Measured pollutant concentration on a wet basis (ppmvw) %𝐻𝐻2𝑂𝑂: Measured effluent moisture concentration (%)
VOC CALCULATIONS BY RESPONSE FACTORS
𝐺𝐺𝑂𝑂𝐶𝐶=
ethylene (ethene) 1.9 × 𝑇𝑇12 +
acetylene (ethyne) 2.4 × 𝑇𝑇13 +
propane 3 × 𝑇𝑇14 +
propylene (propene) 2.85 × 𝑇𝑇15 +
butane 4 × 𝑇𝑇16
Equation 15: VOC as Methane by Response Factors6
Nomenclature: 𝑇𝑇12 ethylene (ethene) (ppmvw) 𝑇𝑇13 acetylene (ethyne) (ppmvw) 𝑇𝑇14 propane (ppmvw) 𝑇𝑇15 propylene (propene) (ppmvw) 𝑇𝑇16 butane (ppmvw) 𝐺𝐺𝑂𝑂𝐶𝐶 𝑇𝑇𝑎𝑎 𝑝𝑝𝑇𝑇𝑝𝑝𝑝𝑝𝑇𝑇𝑝𝑝𝑇𝑇=𝐺𝐺𝑂𝑂𝐶𝐶 𝑇𝑇𝑎𝑎 𝑚𝑚𝑇𝑇𝑚𝑚ℎ𝑇𝑇𝑝𝑝𝑇𝑇/3
Equation 16: VOC as Propane 𝑇𝑇𝑝𝑝𝑚𝑚𝑇𝑇𝑇𝑇 𝐺𝐺𝑂𝑂𝐶𝐶=𝐺𝐺𝑂𝑂𝐶𝐶 𝑇𝑇𝑎𝑎 𝑝𝑝𝑇𝑇𝑝𝑝𝑝𝑝𝑇𝑇𝑝𝑝𝑇𝑇+𝐶𝐶𝐻𝐻2𝑂𝑂
Equation 17: Total VOC for Approval Order Permit Limits7
6 Using FID response factors, with ethylene, acetylene, propylene weighted down when below 0 ppm, and straight readings for propane and butane.
7 Used for lb/hr.