ECMPS Reporting Instructions
Emissions
United States Environmental Protection Agency
Office of Air and Radiation
Clean Air Markets Division
1201 Constitution Ave, NW
Washington, DC 20004
March 3, 2021
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ECMPS Emissions Reporting Instructions
Table of Contents
Table of Contents
Page
1.0 Introduction: Emissions 1
2.0 Emissions 4
2.1 Summary Value Data 6
2.2 Daily Test Summary Data 11
2.2.1 Daily Calibration Data 14
2.3 Weekly Test Summary Data 21
2.3.1 Weekly System Integrity Data 23
2.4 Daily Emissions Data 25
2.4.1 Daily Fuel Data 27
2.5 Hourly Operating Data 28
2.5.1 Monitor Hourly Value Data 35
2.5.1.1 MAT S Monitor Hourly Value Data 59
2.5.2 Derived Hourly Value Data 64
2.5.2.1 MATS Derived Hourly Value Data 77
2.5.3 Hourly Fuel Flow Data 83
2.5.3.1 Hourly Parameter Fuel Flow Data 89
2.5.4 Hourly GFMData 95
2.6 Long Term Fuel Flow Data 98
2.7 Sorbent Trap Data 102
2.7.1 Sampling Train Data 107
2.8 NSPS Subpart TTTT Compliance Reports 112
2.8.1 NSPS4T Compliance Period Data 115
2.8.2 NSPS4T Fourth Quarter Data 117
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Table of Contents
List of Tables
Page
Table 1: Parameter Codes and Descriptions for Summary Value Data 7
Table 2: Precision of Reported Values for Summary Value Data 8
Table 3: Daily Test Result Code Descriptions 12
Table 4: Precision of Reported Values for Daily Calibration Data 18
Table 5: PGVP Gas Type Codes and Descriptions 18
Table 6: Injection Protocol Codes and Descriptions 20
Table 7: Test Result Code Descriptions for Weekly System Integrity Checks 22
Table 8: Load Units of Measure Codes and Descriptions 31
Table 9: Fuel Codes and Descriptions 33
Table 10: MHVElements for S02C or Flow 35
Table 11: MHV Elements for NOXC Record (NOX Rate System Only) 37
Table 12: MHV Elements for NOXC Record (NOXC System) 37
Table 13: Summary of NOx Monitor Hourly Value Record Reporting Requirements 39
Table 14: MHV Elements for C02C 39
Table 15: MHV Elements for 02C 42
Table 16: MHV Elements for H20 46
Table 17: Parameter Codes and Descriptions for thqMHVData Record 47
Table 18: Precision of Reported Values for Monitor Hourly Value Data 52
Table 19: MODC Codes and Descriptions for MHV 52
Table 20: Moisture Basis Codes and Descriptions for MHV 58
Table 21: MMHVElements for HGC, HCLC and HFC 59
Table 22: Parameter Codes and Descriptions for the MMHV Data Record 60
Table 23: MODC Codes and Descriptions for MMHV 61
Table 24: Parameter Codes and Descriptions for the DHVData Record 67
Table 25: Precision of Reported Values for Derived Hourly Value Data 71
Table 26: MODC Codes and Descriptions for DHV 72
Table 27: System ID Reporting for Derived Hourly Values 74
Table 28: Operating Condition Codes and Descriptions for DHV 75
Table 29: Fuel Codes and Descriptions 76
Table 30: Parameter Codes and Descriptions for thqMDHVData Record 79
Table 31: MODC Codes and Descriptions for MDHV 81
Table 32: Oil Fuel Flow Fuel Codes and Descriptions 84
Table 33: Gas Fuel Flow Fuel Codes and Descriptions 85
Table 34: Volumetric Units of Measure Codes and Descriptions 86
Table 35: Source of Data Volumetric Codes and Descriptions 87
Table 36: Source of Data Mass Codes and Descriptions 88
Table 37: Parameter Codes and Descriptions for Hourly Parameter Fuel Flow Data 90
Table 38: Precision of Reported Values for Parameter Value for Fuel 91
Table 39: Sample Type Codes and Descriptions 91
Table 40: Operating Condition Codes and Descriptions for Hourly Parameter Fuel Flow 92
Table 41: Units of Measure Codes and Descriptions for Hourly Parameter Fuel Flow 94
Table 42: Sampling Rate Units of Measure Codes and Descriptions 97
Table 43: Long Term Fuel Flow UOM Code 100
Table 44: GCV Units of Measure Code 101
Table 45: MODC Codes for Sorbent Trap Data 106
Table 46: Sampling Ratio Check Result Codes and Descriptions 110
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ECMPS Emissions Reporting Instructions Table of Contents
Table 47: Train QA Status Codes and Descriptions 111
Table 48: C02 Emissions Standard Codes 113
Table 49: C02M Emission Rate Units of Measure Code 114
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Table of Contents
List of Figures
Page
Figure 1: Emissions XML Schema Complex Elements 3
Figure 2: Emissions XML Elements 4
Figure 3: Summary Value Data XML Elements 7
Figure 4: Daily Test Summary Data XML Elements 11
Figure 5: Daily Calibration Data XML Elements 15
Figure 6: Weekly Test Summary Data XML Elements 21
Figure 7: Weekly System Integrity Data XML Elements 23
Figure 8: Daily Emission Data XML Elements 25
Figure 9: Daily Fuel Data XML Elements 27
Figure 10: Hourly Operating Data XML Elements 29
Figure 11: Monitor Hourly Value Data XML Elements 47
Figure 12: MATS Monitor Hourly Value Data XML Elements 60
Figure 13: Derived Hourly Value Data XML Elements 67
Figure 14: MATS Derived Hourly Value Data XML Elements 78
Figure 15: Hourly Fuel Flow Data XML Elements 84
Figure 16: Hourly Parameter Fuel Flow Data XML Elements 89
Figure 17: Hourly GFMData XML Elements 96
Figure 18: Long Term Fuel Flow Data XML Elements 98
Figure 19: Sorbent Trap Data XML Elements 102
Figure 20: Sampling Train Data XML Elements 107
Figure 21: NSPS4T Summary Data XML Elements 112
Figure 22: NSPS4T Compliance Period Data XML Elements 115
Figure 23: NSPS4TFourth Quarter Data XML Elements 117
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ECMPS Emissions Reporting Instructions
1.0 Introduction: Emissions
ECMPS Reporting Instructions
Emissions
1.0 Introduction: 1 missions
About This Document
In the Emissions Collection and Monitoring Plan System (ECMPS), data must be submitted to
the EPA through the Client Tool using extensible-markup language (XML) format. XML files
must contain certain data elements, which are defined in the XML schema. (Note: More
information about the ECMPS XML Schemas can be found in the XML Schema Description
Documents.)
The purpose of the reporting instructions is to provide the necessary information for owners and
operators to meet the reporting requirements for sources affected by:
1) The Acid Rain Program (ARP);
2) The Cross-State Air Pollution Rule (CSAPR);
3) The Mercury and Air Toxic Standards Rule (MATS); and
4) Other programs required to report data using these XML schemas.
These instructions explain how to report the required data for the applicable regulations. Owners
and operators of units should refer to the applicable regulations for information about what data
are required to be reported.
The Emissions XML Schema is made up of a root element, complex elements, and simple
elements. A simple element is a single piece of data. A complex element is a group of simple
elements which are logically grouped together. The root element is the base of the XML schema.
The elements are related to each other in parent-child relationships. The root element is the
parent element of the entire schema. Complex elements are children of the root element, and
complex elements can also be children of other complex elements. If a complex element is
dependent on a parent complex element, the child complex element cannot be included in the
XML file unless the appropriate parent complex element is also included. Figure 1 below
illustrates the relationships between the emissions root element and the complex elements.
This document provides instructions on how the required data should be reported using this data
structure. For each complex element, this document includes a separate section which includes:
Element Overview: An overview of the kinds of data submitted under the element,
including general information not specific to any associated child complex elements or
simple elements
Element XML Model: A model diagram of the element and any associated child
complex elements or simple elements
Element XML Elements: Instructions for submitting data for each associated simple
element
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ECMPS Emissions Reporting Instructions
1.0 Introduction: Emissions
Specific Considerations: Additional considerations, including information that applies
to particular types of monitoring plan configurations
About Emissions Data
Emissions data are hourly values for measured parameters, calculated hourly emissions values,
instrument calibration data, and aggregated summary data. An emissions file contains one
calendar quarter of hourly and aggregate emissions measurements for a specified unit or group of
related units, including stacks and pipes.
Each unit that is required to submit emissions data for a particular calendar quarter must be
included in one and only one emissions file for that quarter. Each emissions file should contain
all relevant operating, daily quality assurance, and emissions data for all units, common stacks,
multiple stacks, or common pipes that were in a common monitoring configuration for any part
of the quarter.
You must submit an emissions file for each quarter or, for ozone season only reporters, for the
second and third calendar quarters of each year.
Each emissions value that is reported must be rounded to a specified precision (e.g., a certain
number of decimal places or significant digits). The appropriate precision is based on the
parameter, fuel type, and/or record type. Because some fields were designed to be generic and
support reporting data for different parameters, it is not always appropriate to report values to the
precision in the XML format. The appropriate precision for each parameter (and fuel type) can
be found in the instructions under each record type.
Use the standard arithmetic rounding convention where numbers five through nine round to the
next highest number in the previous decimal position to the left.
For example, when reporting S02C, NOXC, C02C, 02C, or H20 in the Monitor Hourly
Value Data (MHV) record, round these values to the nearest 0.1 ppm or 0.1 percent (as
applicable). When reporting FLOW, the last significant digit in the reported flow rate values is in
the thousands place; fill in zeros in the hundreds, tens, and unit columns (e.g., round 15,922,855
scfh to 15,923,000 scfh). When reporting NOXR in the Derived Hourly Value Data (DHV)
record, round the NOx emission rate to three decimal places.
UseofRoffiideCg oundedj&jlu^^
When performing calculations using any value that is reported in the XML, use the value as it is
reported. In other words, use the rounded value in the calculation. However, any value that is
calculated in an intermediate equation but is not reported should not be rounded before using it in
a subsequent equation.
For example, to calculate the bias-adjusted SO2 concentration, multiply the
UnadjustedHourly Value in the S02C MHV record (which has been reported as a value rounded
to one decimal place) by the bias adjustment factor (which has been reported in the RATA as a
value rounded to three decimal places), and round the result to one decimal place before
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ECMPS Emissions Reporting Instructions
1.0 Introduction: Emissions
reporting this value as the AdjustedHourly Value in the Ml IV record. To calculate the hourly SO2
mass rate in lb/hr using formula F-l, use the AdjustedHourly Value in the S02C MHV record
(which has been rounded to one decimal place) and AdjustedHourly Value in the FLOW MHV
record (which has been rounded to the nearest thousand) in the equation, and round the result to
one decimal place before reporting this value as the AdjustedHourly Value in the SO2 DHV
record. When calculating quarterly SO2 emissions in tons, first multiply the
AdjustedHourly Value in the SO2 DHV record (which has been rounded to one decimal place) by
the OperatingTime (which has been rounded to two decimal places) for every hour. Sum these
unrounded products, then divide this unrounded sum by 2,000. Finally, round the result to one
decimal place before reporting the quarterly emissions value in SUMMARY VALUE Data record.
(Note: When the appropriate substitute data value for a particular parameter is the average of the
values recorded in the hour before and the hour after the missing data period, you must round off
the average value to the appropriate precision for the parameter.)
Figure 1: Emissions XML Schema Complex Elements
2.2.1
2.3.1
Weekly
2.4.1
Daily
Calibration
System
Daily Fuel
Data
Integrity
Data
Data
2JL1
2.5.1.1
MATS
2.5.2
2.5.2.1
MATS
Monitor
Man/tor
Derived
Derived
Hourly
Hourly
Hourly
Hourly
Value Data
Value Data
Value Data
Value Data
LEGEND
I'^Raat Clemen
CtiiM
Only
2.8.1
NSPS4T
Compliance
Period Date
I
2.6.2
N5P54T
Fourth
Quarter
Data
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2.0 Emissions
2.0 Emissions
Emissions Overview
The Emissions record is the root element for the Emissions data XML schema. This element
identifies the source for which emissions data are being reported. In addition, it provides
information about the reporting period for which data are provided by identifying the year and
quarter. Include a single Emissions record in each Emissions data file.
Emissions XML Model
Figure 2: Emissions XML Elements
Emissions
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DailyEm is s Ion Data |+J
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-j^WeekiyTestSurTimaryData |^|
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.a.-.-.1
0..0D
-1^, SummaryValueData [j
(J. .on
Daily'TestSu m maryData |^j
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HourtyOperatingData [+]
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ita |+|
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ECMPS Emissions Reporting Instructions
2.0 Emissions
Emissions XML Elements
ORIS Code (ORISCode)
Report the code that indicates the unique identification number given to a source by the Energy
Information Administration (EIA).
Year (Year)
Report the calendar year represented by the data in the file.
Quarter (Quarter)
Report the calendar quarter represented by the data in the file. Be sure that the reported year and
quarter are properly matched to the time period of the emissions data.
Submission Comment (SubmissionComment)
This field can be used to report additional information or provide an explanation about an event
that is specific to the quarterly report. Report the text of the comment in this field.
Version (Version)
Report the XML schema version number. Note that this is a numeric field do not include a "v"
before the number.
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ECMPS Emissions Reporting Instructions
2.1 Summary Value Data
2.1 Summary Value Data
Summary Value Data, Overview
The Summary Value Data records are used to report aggregated quarterly values for the
parameters included in the emissions submission file and cumulative values for the year and/or
ozone season that are the required under Part 75. Summary values are reported by monitoring
location and parameter on basis of the current reporting period, year-to-date, and, if relevant,
ozone season-to-date sums (or averages). For each monitoring location in the file, report a
Summary Value Data record for operating time and another for operating hours. Also report a
Summary Value Data record for each parameter measured or calculated at that location to
meet a regulatory requirement. See Table 1 below for applicable parameters.
For units required to report heat input (HI), you must include for each unit a SUMMARY VALUE
Data record for HI whether the HI was actually measured at the unit level or apportioned (or
summed) from another location or multiple locations.
Sources are not required to report quarterly or cumulative values for any MATS affected
pollutants.
Common Stacks or Pipes
The reporting period and cumulative heat input values for the stack or pipe (in mmBtu) must
equal the sum of the His for the units associated with the stack or pipe. For the individual units,
report Summary Value Data records only for HI, operating time, and operating hours. Do not
apportion SO2 mass emissions, CO2 mass emissions, or average NOx emission rates to the
individual units.
Multiple Stacks or Pipes
For these configurations, report only the reporting period and cumulative HI, operating time,
operating hours, and weighted average NOx emission rates in the unit-level Summary Value
Data records. Do not report quarterly and cumulative SO2 or CO2 mass emissions at the unit
level. The reported quarterly or cumulative HI value for the unit must equal the sum of the
corresponding HI values reported for the individual stacks, ducts, or pipes.
Complex Stack Configurations
A complex stack configuration exists where a unit's emissions are measured at more than one
stack location and where at least one of these stack locations is a common stack shared with one
or more other units.
For the purposes of quarterly and cumulative HI accounting, the sum of the His for all units
associated with all stacks in a complex configuration must equal the sum of the stack His for all
of the stacks. For example, if emissions from scrubbed Units 1, 2, and 3 are measured at CS1
during normal unit operation and are measured at CS2 during scrubber bypass hours, the sum of
the His for Units 1, 2, and 3 must equal the sum of the His for CS1 and CS2.
See "Specific Considerations" below for information about how to calculate summary values.
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2.1 Summary Value Data
Summary Value Data XML Model
Figure 3: Summary Value Data XML Elements
Summary Value Data XML Elements
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID that corresponds to the summary data value location.
This is the alphanumeric code assigned by a source to identify a unit, stack, or pipe.
Parameter Code (ParameterCode)
Report the Parameter Code for the parameter summarized by this Summary Value Data
record. Use the appropriate uppercase code as shown in Table 1.
Table 1: Parameter Codes and Descriptions for Summary Value Data
Code
Description
BC02
Biogenic CO2 Mass (tons)
(Only for RGGI affected units)
C02M
Carbon Dioxide Mass (tons)
HIT
Heat Input Total (mmBtu)
NOXM
Nitrogen Oxide Mass (tons)
NOXR
Nitrogen Oxide Rate (lb/mmBtu)
OPTIME
Operating Time (hr)
OPHOURS
Number of Operating Hours
S02M
Sulfur Dioxide Mass (tons)
Current Reporting Period Total (CurrentReportingPeriodTotal)
Report the cumulative parameter value (i.e., emissions or time) as measured from the beginning
of the current reporting period to the end of the current reporting period. This will generally be
the quarterly total (or average), except for the second calendar quarter file for ozone season only
reporters. For those files, this value is the total (or average) for just May and June. The value
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2.1 Summary Value Data
should be rounded to the number of decimal places according to Table 2. If there was no
operation at this location during the reporting period, report zero.
Ozone Season to Date Total (OzoneSeasonToDateTotal)
For locations subject to ozone season only programs, report the cumulative parameter value (i.e.,
emissions or time) for the ozone season as follows: For a first quarter report, leave this field
blank. For a second quarter report, report the sum parameter value (i.e., emissions or time) from
the beginning of the ozone season (May 1) to the end of the reporting period. For a third quarter
report, report the sum of the Ozone Season to Date Total value reported in the second quarter
plus the quarterly value for the parameter reported for the third quarter. For a fourth quarter
report, report the Ozone Season to date total from the third quarter report. All values should be
rounded to the number of decimal places according to Table 2. If there was no operation at this
location during the ozone season, report zero. For locations not subject to ozone season only
programs, leave this field blank.
Year to Date Total (YearToDateTotal)
For locations that report year-round, report the cumulative sum of current year quarterly totals
for each parameter value (i.e., emissions or time) as follows: For a first quarter report, report the
sum parameter value (i.e., emissions or time) for the quarter. For subsequent quarters, report the
sum of the current reporting period plus the quarterly values for the parameter reported in the
previous quarters. For example, the Year to Date total for quarter three would be calculated by
summing the current quarter three reporting period value with the previously reported quarter
one and quarter two values. The value should be rounded to the number of decimal places
according to Table 2. If there was no operation at this location during the calendar year-to-date,
report zero. For ozone season only reporters, leave this field blank.
Table 2: Precision of Reported Values for Summary Value Data
Parameter Codes
Number of Decimal Places
C02M, NOXM, S02M, BC02
One
OPTIME
Two
NOXR
Three
HIT
Zero
Specific Considerations
Operating Time and Operating Hours
Operating Time is the sum of the hourly OperatingTime in Hourly Operating Data records.
Operating Hours is a count of Hourly Operating Data records with OperatingTime greater
than zero.
S02M, NOXM, HIT, and C02M from Hourly Data
For non-Low Mass Emissions (LME) locations, to calculate Reporting Period, Year to
Date, and Ozone Season to Date totals for S02M, and NOXM, multiply each hourly rate
value reported in the Derived Hourly Value record by the corresponding operating
time in the Hourly Operating record, sum those values, and then divide by 2,000.
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2.1 Summary Value Data
Round the resulting sum to the appropriate number of decimal places per Table 2. For
C02M, follow the same procedure but do not divide by 2,000.
For LME units, to calculate Reporting Period, Year to Date, and Ozone Season to Date
totals for S02M, NOXM, and HIT, sum the values in the Derived Hourly Value
records and divide the total S02M and NOXM by 2,000 to determine total tons for each
respective period (i.e. calendar quarter, Year to Date and Ozone Season). Round the
resulting sum to the appropriate number of decimal places per Table 2. For C02M,
follow the same procedure but do not divide by 2,000.
If a common fuel pipe (or supply tank) serves a group of LME units and the long-term
fuel flow option is used to quantify heat input, report the cumulative heat input for the
group of units under the common pipe (or tank) ID. If more than one common pipe (or
tank) serves the same group of LME units, report a separate Summary Value Data
record for Total Heat Input (HIT) for each pipe (or tank).
C02M from Daily Data
If CO2 mass is calculated on a daily basis and reported in the Daily Emissions Data record,
calculate Reporting Period, Year to Date, and Ozone Season to Date for C02M by summing the
values in these records. Round the resulting sum to the appropriate number of decimal places per
Table 2.
NOx Emission Rate
For non-Acid Rain units, do not report a Summary Value Data record for NOXR, even
if the NOx emission rate is calculated on an hourly basis for the purpose of determining
NOx mass rate (lb/hr).
For single unit or monitored common stack configurations, calculate each summary NOx
emission rate as a straight arithmetic average of the NOx emission rates for all operating
hours in the reporting period, ozone season, or year-to-date period, as reported in the
Derived Hourly Value Data. If the recorded NOx emission rate is zero, include these
hours in the average only if the operating time for the hour is greater than zero.
Do not weight the quarterly or cumulative average NOx emission rate for partial
operating hours (i.e., count all hourly NOx emission rates equally, irrespective of the unit
operating time). Report both the quarterly and cumulative average NOx emission rates for
the unit or stack to three decimal places.
For simple multiple stack or multiple duct configurations in which NOx emissions and
heat input are monitored separately in each of the stacks or ducts, you must calculate and
report the quarterly and cumulative arithmetic average NOx emission rate for each stack
or duct, and you must also calculate and report a quarterly and cumulative heat input-
weighted NOx emission rate for the unit. Determine the heat input-weighted averages for
the unit as follows. First, use the reported hourly data (i.e., stack level NOx emission and
heat input rates) and the following formula to calculate a heat input-weighted unit NOx
emission rate for each stack operating hour in the quarter:
Hourly Unit NOx Emission Rate (Ib/mmBtu)
(NOx Rate)A(Heat Input)A +(NOx Rate)B(Heat Input)B
(Heat Input) a + (Heat Input) b
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2.1 Summary Value Data
In the formula above, the term "Heat Input" for multiple stack A or B is the product of
the hourly HI rate for the stack and the corresponding operating time for the stack.
When a multiple-stack configuration is selected for a combined-cycle combustion turbine
(CT) that: (a) uses the provisions of Appendix D to Part 75 for unit HI; and (b) has a
main stack and bypass stack configuration; and (c) has NOx-diluent monitoring systems
on both the main and bypass stacks, the mathematics are slightly different. In this case,
for any unit operating hour in which gases flow through both stacks for any part of the
hour, a time-weighted, rather than a heat-input-weighed unit-level NOx emission rate is
calculated, using an equation similar to the one above, except that the terms "(Heat
Input)A" and "(Heat Input)B" are replaced with tA and tB, respectively, where tA and tB
are the main stack operating time and bypass stack operating time, respectively. The
time-weighted hourly average NOx emission rates are then used to determine the
quarterly and cumulative NOx emission rates for the unit.
The quarterly heat input-weighted average NOx emission rate for the unit is then
determined by taking the sum of all of the hourly heat input-weighted NOx emission rates
for the quarter and dividing this sum by the total number of unit operating hours in the
quarter. In determining the number of unit operating hours in the quarter, each partial
operating hour is counted as a full hour of unit operation. The cumulative heat input-
weighted average NOx emission rate for the unit is determined in the same way as the
quarterly average for the unit, except that the terms "for the quarter" and "in the quarter"
are replaced, respectively, with the terms, "for the year, to date" and "in the year, to
date."
For Acid Rain Program (ARP) LME units, determine the quarterly average NOx emission
rate for each unit as follows: Sum all of the hourly NOx mass values from the DERIVED
Hourly Value records for NOx to get the total NOx mass for the quarter. Then, sum the
hourly HI values from the DERIVED HOURLY VALUE records for HI to obtain the HIT for
the quarter. Divide the total NOx mass for the quarter by the total quarterly HI, to
determine the quarterly NOx emission rate in lb/mmBtu. Calculate the cumulative (year-
to-date) NOx emission rate by separately summing the hourly NOx mass and HI values
over all operating hours in all quarters, and then dividing the NOx mass sum by the HI
sum.
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2.2 Daily Test Summary Data
2 ily Test Summary Data
Daily Test Summary Data, Overview
The Daily Test Summary Data record summarizes the completion date and time and the
results (Passed/Failed/Aborted) for each daily calibration error test and flow interference check.
For each calibration error test, report the calibration test data in the Daily Calibration Data
record (see instructions for that record below). Also use the Daily Test Summary Data record
to report the results of the daily Predictive Emissions Monitoring System (PEMS) calibration for
units with an approved PEMS monitoring method.
Report the results of all failed, passing, and incomplete calibrations that affect data validation.
For redundant backup monitors, the results of daily calibration error tests need not be reported
except on days when using the monitors to report emissions data.
Do not report the results of off-line calibrations performed during periods of non-operation of the
unit or stack unless the unit has passed the off-line calibration demonstration and is using off-line
calibrations to validate data. The off-line calibration demonstration provision only applies to
CEMS data monitored under Part 75.
Daily Test Summary Data XML Model
Figure 4: Daily Test Summary Data XML Elements
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2.2 Daily Test Summary Data
Daily Test Summary Data XML Elements
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID for the daily test location. This is the alphanumeric
code assigned by a source to identify a unit or stack.
Date (Date)
For daily calibrations, report the date corresponding to the completion of the last gas injection of
the test. For interference checks, report the date on which the test was completed.
Hour (Hour)
For daily calibrations, report the hour corresponding to the completion of the last gas injection of
the test. For interference checks, report the hour in which the test was completed.
Minute (Minute)
For daily calibrations, report the minute corresponding to the completion of the last gas injection
of the test. For interference checks, report the minute in which the test was completed.
Monitoring System ID (MonitoringSystemID)
If this is a PEMS Calibration test, report the three-character Monitoring System ID for the NOXP
system. Leave this field blank for other parameters.
Component ID (ComponentID)
Report the three-character ID assigned to the component. Leave this field blank for PEMSCAL.
Test Type Code (TestTypeCode)
Report the test type code as DAYCAL for a daily calibration test summary record, or as
INTCHK for an interference check. For units with an approved PEMS methodology, report the
test type code as PEMSCAL for daily PEMS calibration tests.
Test Result Code (TestResultCode)
Report the test result code as PASSED, PASSAPS, FAILED, INC, or ABORTED. See detailed
descriptions of each code in Table 3.
Table 3: Daily Test Result Code Descriptions
Code
Description
PASSED
Report this code whenever the standard performance specification is met for the test.
For daily calibration error tests, report the test as passed only if the zero and upscale-
level calibration error test injections each pass the standard performance specification in
sequence. Partial calibrations, where only one injection level is completed and passes
the performance specification, may not be reported as "PASSED." Rather, these may
either be omitted from the electronic report or reported as "INC."
PASSAPS
This code applies to daily calibration tests only. Report this code whenever the standard
performance specification is not met for one or both injections, but the alternative
performance specification (as described in Part 75, Appendix B, Section 2.1.4(a) or in
Appendix A to 40 CFR Part 63, Subpart UUUUU (as applicable)) is met for whichever
injections did not meet the standard specification.
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2.2 Daily Test Summary Data
Code
Description
FAILED
Report this code whenever the applicable performance specification is not met for the
test. For daily calibration error tests, report the test as failed whenever either the zero-
level calibration error test or upscale-level calibration error test (or both) cannot meet
either the applicable standard or alternative performance specification. Data for the
systems associated with the specified component will be considered invalid until a
subsequent retest is passed.
INC
Report this code whenever a calibration error test is not completed at both required
calibration levels and the completed calibration injection passes the applicable
performance specification tests. Incomplete tests have no effect on data validation and
do not satisfy the daily calibration requirements of Part 75 or Part 63, Subpart UUUUU.
ABORTED
Report this code whenever a test is aborted due to a malfunction of the monitoring
system. Data for the systems associated with the specified component will be considered
invalid until a subsequent retest is passed. Partial calibrations, where only one injection
level is completed and failed, must be reported as "FAILED."
Span Scale Code (SpanScaleCode)
For Daily Calibration tests, report whether the component or the range of the instrument tested is
high (H) or low (L) scale (If the component is a single range and no default high range is in use,
enter "H"). Report a span scale of high (H) for Hg and HC1 monitor components. Do not report a
span scale code for flow monitor components.
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2.2.1 Daily Calibration Data
2.2.1 Daily Calibration Data
Daily Calibration Data, Overview
The Daily Calibration Data record is used to report the details of each daily calibration error
test sequence completed. You must report a Daily Calibration Data record for each
calibration error test performed that affects data validation. A complete Daily Calibration
Data record should contain data for both the zero and upscale calibration point.
Partial calibration error tests (where the tested level passes the applicable specification) do not
satisfy the daily calibration error requirements and are not required to be reported since they
have no effect on data validation. If such calibrations are included in the emissions report, then
report the result as "INC" in the Daily Test Summary Data record. Partial calibration error
tests where the tested level fails to meet the applicable specification must be reported as an
"ABORTED" test. You are not required to report additional failed calibration tests for a
component when the data from that component is already considered invalid due to a previously
failed calibration error test. However, please note that tests reported as "FAILED" should be
reported with all the necessary fields completed. Daily calibration error tests conducted with
expired gas cylinders, gas cylinders obtained from a vendor not participating in the PGVP
program, or gas cylinders containing concentrations outside the required percentage of the
Monitoring Span Value record are considered invalid and should not be reported.
For more information concerning this record regarding moisture monitoring systems, flow
monitors, maintenance procedures, or dual range analyzers, see the "Specific Considerations"
section below.
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2.2.1 Daily Calibration Data
Daily Calibration Data XML Model
Figure 5: Daily Calibration Data XML Elements
Daily Calibration Data XML Elements
OnLine OffLine Indicator (OnLineOffLinelndicator)
Indicate whether this daily calibration was performed online (report "1") or offline (report "0").
For Hg and HC1 CEMS, all calibrations prior to September 9. 2020 must be done online. On and
after September 9. 202< lily calibrations may be performed offline.
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2.2.1 Daily Calibration Data
Upscale Gas Code (UpscaleGasCode)
Indicate whether the gas used for the upscale injection is high-level or mid-level by reporting the
appropriate code (HIGH or MID). Mid-level gas injections may be performed and reported in
lieu of the high-level injections, provided that the mid-level (MID) gas is more representative of
the actual stack emissions. If the daily calibration was not completed and there was no upscale-
level injection, leave this field blank.
Zero Injection Date (ZeroInjectionDate)
Report the date of the completion of the zero gas injection. If the daily calibration was not
completed and there was no zero-level injection, leave this field blank.
Zero Injection Hour (ZeroInjectionHour)
Report the hour of the completion of the zero gas injection. If the daily calibration was not
completed and there was no zero-level injection, leave this field blank.
Zero Injection Minute (ZeroInjectionMinute)
Report the minute of the completion of the zero gas injection. If the daily calibration was not
completed and there was no zero-level injection, leave this field blank.
Upscale Injection Date (UpscalelnjectionDate)
Report the date of the completion of the upscale gas injection. If the daily calibration was not
completed and there was no upscale-level injection, leave this field blank.
Upscale Injection Hour (UpscalelnjectionHour)
Report the hour of the completion of the gas injection. If the daily calibration was not completed
and there was no upscale-level injection, leave this field blank
Upscale Injection Minute (UpscalelnjectionMinute)
Report the minute of the completion of the upscale gas injection. If the daily calibration was not
completed and there was no upscale-level injection, leave this field blank.
Zero Measured Value (ZeroMeasuredValue)
Report the value measured by the instrument in response to the reference following the gas
injection or reference signal. Report this value in calibration span units of measure. For all
monitors except flow, the units (and decimal precision) should match the hourly reporting. For
example, for SO2, report concentration in ppm and round the resulting value to the appropriate
number of decimal places in Table 4. For flow, use the calibration units of measure defined in
the Monitoring SPAN VALUE record and round the resulting value to the appropriate number of
decimal places per Table 4.
If the daily calibration was not completed and there was no zero-level injection, leave this field
blank.
Upscale Measured Value (UpscaleMeasuredValue)
Report the value measured by the instrument in response to the reference following the gas
injection or reference signal. Report this value in calibration span units of measure. For all
monitors except flow, the units (and decimal precision) should match the hourly reporting. For
example, for SO2, report concentration in ppm and round the resulting value to the appropriate
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2.2.1 Daily Calibration Data
number of decimal places per Table 4. For flow, use the calibration units of measure defined in
the Monitoring SPAN VALUE record and round the resulting value to the appropriate number of
decimal places per Table 4.
If the daily calibration was not completed and there was no upscale-level injection, leave this
field blank.
Zero APS Indicator (ZeroAPSIndicator)
If the zero injection result is determined using a standard calibration error (CE) specification,
report "0." If the alternative performance specification is used, report "1," as allowed under Part
75 or (for Hg and HC1) under 40 CFR Part 63, Subpart UUUUU. If the daily calibration is not
completed and there was no zero level injection, leave this field blank.
Upscale APS Indicator (UpscaleAPSIndicator)
If the upscale injection result is determined using a standard CE specification, report "0." If the
alternative performance specification is used, report "1," as allowed under Part 75 or (for Hg and
HC1) under 40 CFR Part 63, Subpart UUUUU. If the daily calibration was not completed and
there was no upscale-level injection, leave this field blank.
Zero Calibration Error (ZeroCalibrationError)
Report the calibration error results of the zero-level injection, as required by Part 75 or (for Hg
and HC1) according to 40 CFR Part 63, Subpart UUUUU (see the UpscaleCalibrationError
element description for further instructions). If the daily calibration was not completed and there
was no zero-level injection, leave this field blank.
Upscale Calibration Error (UpscaleCalibrationError)
Report the calibration error results of the upscale injection, as required by Part 75 or (for Hg and
HC1) according to 40 CFR Part 63, Subpart UUUUU. For SO2, Hg, NOx, and flow monitors,
express the results either as a percentage of the span value or (for low-emitters of SO2, Hg, or
NOx, or for low-span differential pressure-type flow monitors) as the absolute value of the
difference between the reference and measured values (i.e., |R - A|). For CO2 and O2 monitors,
the results are always determined using |R - A| and are expressed in terms of absolute percent
CO2 or O2. Use this method for all diluent gas monitors used for CO2 reporting and/or NOx
reporting and/or MATS reporting. For all parameters, except for low-span differential pressure-
type flow monitors using the alternative specification, report the calibration error (or |R - A|) to
one decimal place. When a low-span differential pressure-type flow monitor uses the alternative
specification because the standard specification was not met, the |R - A| value must be reported
to two decimal places. If the daily calibration was not completed and there was no upscale-level
injection, leave this field blank.
If the calculated calibration error meets the standard performance specification, report the result
as a percentage of the span value even though the result would also pass the alternative
specification. Only when the result does not pass the standard specification, but meets the
alternative specification, should |R - A| be reported. If the test does not pass either specification,
report the calibration error as a percentage of the span value.
Zero Reference Value (ZeroReferenceValue)
Report the calibration gas or reference signal value used in this injection. Report the certified
value of the reference calibration gas, in ppm for SO2, HC1, and NOx, in |ig/scm for Hg, or in
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2.2.1 Daily Calibration Data
%C02 or %02 for CO2 and O2. Report the value of the reference signal in the appropriate units,
for flow monitors. Report the value to the precision defined in Table 4. If the daily calibration
was not completed and there was no zero-level injection, leave this field blank.
Upscale Reference Value (UpscaleReferenceValue)
Report the calibration gas or reference signal value used in this injection. Report the certified
value of the reference calibration gas, in ppm for SO2, HC1, and NOx, in |ig/scm for Hg, or in
%C02 or %02 for CO2 and O2. Report the value of the reference signal in the appropriate units
for flow monitors. Report the value to the precision defined in Table 4. If the daily calibration
was not completed and there was no upscale-level injection, leave this field blank.
Table 4: Precision of Reported Values for Daily Calibration Data
Parameter Codes
Required Precision
C02, H20, NOX, 02, S02, HG, HCL
One Decimal Place
FLOW
Same as Calibration Span Value
Upscale Gas Type Code (UpscaleGasTypeCode)
For SO2, NOx, CO2, and O2 components, report one or more of the gas type codes in Table 5 to
indicate the type of gas in the cylinder used for the upscale injection. Note: If you use a
component that is not present in this table, you may report a value of "APPVD," but you will
need to contact EPA before submitting the data in order to get permission to use this code. Leave
this field blank if the Component Type Code is FLOW, HG, HC1 or H20.
Table 5: PGVP Gas Type Codes and Descriptions
C ode
Description
so:
LPA Protocol Certified Gas Component SO_
NO
EPA Protocol Certified Gas Component NO
N02
EPA Protocol Certified Gas Component N02
NOX
EPA Protocol Certified Gas Component Total Oxides of Nitrogen
N20
EPA Protocol Certified Gas Component Nitrous Oxide
C02
EPA Protocol Certified Gas Component CO2
CO
EPA Protocol Certified Gas Component CO
02
EPA Protocol Certified Gas Component O2
PPN
EPA Protocol Certified Gas Component Propane
CH4
EPA Protocol Certified Gas Component Methane
HE
EPA Protocol Certified Gas Component Helium
H2S
EPA Protocol Certified Gas Component Hydrogen Sulfide
BALA
Balance Gas is Air
BALN
Balance Gas is Nitrogen
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2.2.1 Daily Calibration Data
Code
Description
M'PVD
Other EPA-approved EPA Protocol gas blend (see note below). Do not report certified
components when using this code.
AIR
Zero Air Material (instrument air with no cylinder and meeting the requirements of paragraphs
(2) or (3) of the ZAM definition in ง 72.2). This code is reported only when it is used as a high-
level 02 gas for an oxygen analyzer. Do not report AIR when used to zero an analyzer. Do not
report certified components when using this code.
SRM
Standard reference material. Do not report certified components when using this code.
NTRM
NIST-traceable reference material. Do not report certified components when using this code.
GMIS
Gas manufacturer's intermediate standard. Do not report certified components when using this
code.
RGM
Research gas mixture. Do not report certified components when using this code.
PRM
SRM-equivalent compressed gas primary reference material. Do not report certified
components when using this code.
ZERO
Zero gas (meeting the definition of "Zero Air Material" in ง72.2) used for the low level
calibration of a reference analyzer used in RATA testing. Do not report certified components
when using this code.
Note: If you use a gas component or material that is not present in this table, you may report a value of "APPVD,"
but you will need to contact your EPA/CAMD/EMB analyst before submitting the data in order to get permission
to use this code.
Cylinder Identifier (Cylinderldentifier)
For SO2, NOx, CO2, and O2 components, report the vendor-assigned identification or serial number
found on the cylinder used for the upscale injection. Use only capitalized alphanumeric characters,
hyphens, periods, and ampersands. In order to import a file with an ampersand successfully, the
ampersand will need to be escaped within the XML. For example, to report the Cylinder ID
, the XML would read . Leave this field blank if the
Component Type Code is FLOW, HCL, HG, or H20.
Vendor Identifier (Vendorldentifierj
For an EPA Protocol gas, report the EPA-assigned PGVP Vendor ID of the production site that
supplied the cylinder used for the upscale injection. PGVP Vendor IDs are year specific, therefore
report the assigned PGVP Vendor ID that is applicable on the date the cylinder is certified. An up-to-
date list of PGVP Vendor IDs will be located on the EPA website, and can be accessed via the
ECMPS Support website. Leave this field blank if the Component Type Code is FLOW, HCL, HG,
or H20 or if the Gas Type Code is AIR, SRM, NTRM, GMIS, RGM, or PRM.
Expiration Date (ExpirationDate)
For an EPA Protocol gas, SRM, NTRM, GMIS, RGM, or PRM, report the expiration date of the
cylinder used for the upscale injection. Leave this field blank if the Component Type Code is FLOW,
HCL, HG, or H20 or if the Gas Type Code is AIR.
Injection Protocol Code (InjectionProtocolCode)
Report this code to indicate the use of either elemental or oxidized NIST-traceable Hg standards.
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2.2.1 Daily Calibration Data
Table 6: Injection Protocol Codes and Descriptions
Code
Description
HGE
NIST-Traceable Elemental Hg Standards as defined in Section 3.1.4, Part 63,
Subpart UUUUU, Appendix A.
HGO
NIST-Traceable Source of Oxidized Hg as defined in Section 3.1.5, Part 63,
Subpart UUUUU, Appendix A.
Specific Considerations
Maintenance Procedures
During maintenance procedures, the calibration gas injections used during those procedures do
not have to be reported if the results of the calibration gas injection do not indicate that the
control status of the monitor has changed. For instance, if a monitoring system is already out-of-
control and calibration gases are injected as part of the maintenance procedures, the results of
these injections do not have to be reported. Only the results of the post-maintenance calibration
error test which is used to validate the subsequent emissions data must be reported. Similarly, if
as part of a maintenance procedure on one monitor, calibration gases must be injected into other
monitors, the results of these injections do not have to be reported as long as they are within the
calibration error specification. If the results of these injections indicate that any monitoring
system is out-of-control, these injections must be reported and considered to be a failed
calibration error test.
Components Belonging to Multiple Systems
If a component is part of two (or more) systems (for example, a CO2 analyzer used both as a
primary CO2 monitor and as a diluent monitor in a NOx-diluent monitoring system) the
calibration error test should only be reported once, using the component ID. Data validation for
each monitoring system of which the component is part will be determined based on this single
test record.
Moisture Monitoring Systems
For moisture monitoring systems consisting of wet- and dry-basis O2 monitors, report two
calibrations only if the wet and dry readings are obtained from two different analyzers. Report
only the dry-basis O2 calibration when a single analyzer is used for both wet and dry oxygen.
Flow Monitoring Systems
For flow monitoring systems comprised of two flow components, perform and report a daily
calibration for each flow component in the system.
Dual Range Monitors
For dual range monitors, perform and report daily calibrations for the instrument range(s) used
during the day.
Provisions for Conducting Daily Calibration
Conduct the daily calibration according to the requirements of 40 CFR Part 75, Appendices A
and B or (if applicable) 40 CFR Part 63, Subpart UUUUU. Daily calibrations validate the
acceptability of emissions data from each monitoring component.
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ECMPS Emissions Reporting Instructions
2.3 Weekly Test Summary Data
2.3 Weekh l\wt Summary Data
EeeUxJMJkimmiiJM mm
The Weekly Test Summary Data record summarizes the completion date and time, and the
results (Passed/Failed) for each weekly system integrity check. For each single-point system
integrity check, report the test data in the Weekly System Integrity Data record. (See
instructions for that record below.)
Report the results of all failed and passed weekly system integrity checks that affect data
validation. You are not required to report additional failed single-point system integrity test data
for a component when the data from that component are already considered invalid due to a
previously failed test. However, please note that tests reported as "FAILED" should be reported
with all the necessary fields completed.
Weekly Test Summary Data, XML Model
Figure 6: Weekly Test Summary Data XML Elements
Weekly Test Summary Data XML Elements
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID for the daily test location. This is the alphanumeric
code assigned by a source to identify a unit or stack.
Date (Date)
Report the date corresponding to the completion of the test.
Hour (Hour)
Report the hour corresponding to the completion of the test.
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2.3 Weekly Test Summary Data
Minute (Minutej
Report the minute corresponding to the completion of the test.
Component ID (ComponentID)
Report the three character ID assigned to the component.
Test Type Code (TestTypeCode)
Report the test type code as HGSI1 to indicate a Single-Point System Integrity Check.
Test Result Code (TestResultCode)
Report the test result code as PASSED, PASSAPS, or FAILED. See detailed descriptions of each
code in Table 7, below. The applicable performance specifications for this test are found in Table
A-2 of Appendix A to 40 CFR Part 63, Subpart UUUUU.
Table 7: Test Result Code Descriptions for Weekly System Integrity Checks
Code
Description
PASSED
Report this code whenever the standard performance specification in Table A-2 of
Appendix A to 40 CFR Part 63, Subpart UUUUU is met.
PASSAPS
Report this code whenever the standard performance specification is not met but
the alternative performance specification in Table A-2 is met.
FAILED
Report this code whenever the system integrity error (SIE) fails to meet either the
standard or alternative performance specification. Data for the monitoring system
will be considered invalid until a subsequent retest is passed.
Span Scale Code (SpanScaleCode)
Report a span scale code of "H."
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2.3.1 Weekly System Integrity Data
2.3.1 Weekly System Integrity Data
Weekly System Imteeritv Data, Overview
The Weekly System Integrity Data record is used to report the details of each single-point
system integrity check performed for Hg CEMS that conduct daily calibration error tests using
an elemental Hg standard.
For more information concerning this record see the "Specific Considerations" section below.
Weekly System Imteeritv Data, XML Model
Figure 7: Weekly System Integrity Data XML Elements
Weekly System Integrity Data XML Elements
Gas Level Code GasLevelCode
Indicate whether the standard used is a high- or mid-level NIST-traceable source of oxidized Hg
by reporting the appropriate code (HIGH or MID). Calibration standard injections should be
performed at the level which is most representative of the actual stack emissions.
Reference Value ReferenceValue
Report the value of the calibration standard used for the injection. Report the reference value, in
Hg/scm, rounded to one decimal place.
Measured Valut MeasuredValue
Report the value measured by the instrument (|ig/scm) in response to the reference following the
calibration standard injection. Report this value in |j,g/scm rounded to one decimal place.
APS Indicator APSIndicator
If the system integrity error (SIE) is determined using the standard performance specification,
report "0." If the alternative performance specification (APS) is used to pass the test, report "1."
System Integrity Error SystemlntegrityError
Calculate and report the results of the single-point system integrity check as a percentage of the
reference gas value or, if necessary, as the absolute value of the difference between the reference
and measured values (i.e., |R - A|).
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2.3.1 Weekly System Integrity Data
If the calculated system integrity error meets the standard performance specification, report the
result as a percentage of the reference gas value, even though the result would also pass the
alternative specification. Only when the result does not pass the standard specification, but meets
the alternative specification, should |R - A| be reported. If the system integrity check fails both
specifications, report the SIE as a percentage of the reference gas value.
SBecfficCoasideiMoiM
The "weekly" single-point system integrity check must be performed at least once every 7
operating days (see section 5.1.2.3 of Appendix A to 40 CFR Part 63, Subpart UUUUU). The
test must be done while the unit is combusting fuel. A mid-level or high-level NIST-traceable
source of oxidized Hg must be used. The test consists of a single high- or mid-level injection.
There is no grace period for this test.
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ECMPS Emissions Reporting Instructions
2.4 Daily Emissions Data
2.4 Daily Emissions Data
Daily Emissions Data Overview
Submit Daily Emission Data records to report daily CO2 mass determined using Appendix G
Fuel Sampling and Analysis (FSA) and Equation G-l. Note that this CO2 value is the total mass
emissions for the day, not a daily rate.
Daily Emissions Data XML Model
Figure 8: Daily Emission Data XML Elements
O..oo
Daily Emissions Data XML Elements
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID for the daily emissions location. This is the
alphanumeric code assigned by a source to identify a unit or pipe.
Date (Date)
Report the date corresponding to the daily emissions.
Parameter Code (ParameterCode)
Report the parameter code for daily emissions monitoring as C02M.
Total Daily Emissions (TotalDailyEmissions)
Report the total CO2 mass emissions for the day in tons. Round to one decimal place.
Total Carbon Burned (TotalCarbonBurned)
Report the total amount of carbon burned (in lbs) during the day.
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ECMPS Emissions Reporting Instructions
2.4 Daily Emissions Data
Adjusted Daily Emissions (AdjustedDailyEmissions)
This field applies only to coal-fired units and is optional. Report the adjusted value, in tons, if
adjusting the CO2 mass emissions for carbon content of the fly ash. Round to one decimal place.
Leave this field blank if electing not to make an adjustment for the carbon content of the fly ash.
Unadjusted Daily Emissions (UnadjustedDailyEmissions)
Report the unadjusted daily emissions value determined using the G-l equation.
Sorbent Related Mass Emissions (SorbentRelatedMassEmissions)
This field is only for units with add-on SO2 emission controls. Report data in this field in tons.
Round to one decimal place.
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ECMPS Emissions Reporting Instructions
2.4.1 Daily Emissions Data
2.4.1 Daily Fuel Data
Daily Fuel Data, Overview
Submit Daily Fuel Data records to report fuel-specific data used when using Appendix G Fuel
Sampling and Analysis (FSA) and Equation G-l to determine daily CO2 mass if required to do so
on behalf of the RGGI program.
Daily Fuel Data XML Model
Figure 9: Daily Fuel Data XML Elements
Daily Fuel Data XML Elements
Fuel Code (FuelCode)
Report the fuel code of a specific fuel used during the day.
Daily Fuel Feed (DailyFuelFeed)
Report the feed rate of a specific fuel (in lbs) used during the day.
CarbonContent Used (CarbonContentUsed)
Report the amount of carbon burned as a percentage of the daily feed rate for a specific fuel.
Fuel Carbon Burned (FuelCarbonBurned)
Report the amount of carbon burned (in lbs) during the day for a specific fuel.
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ECMPS Emissions Reporting Instructions
2.5 Hourly Operating Data
2.5 Hourly Operating Data
Hourly Operating Data Overview
Report an Hourly Operating Data record for every clock hour of the reporting period for
every unit, stack, and pipe in the monitoring configuration represented by this emissions file.
(You must report these records even for non-operating quarters.) Report an HOURLY OPERATING
Data record for every clock hour, as follows: (a) for each affected unit, irrespective of the
location(s) at which the emissions are measured; and (b) for each common stack (or pipe) or
multiple stack (or pipe) location at which emissions are measured.
For example, if common stack CS1 serves Units 1 and 2 and emissions are monitored at the
common stack, report Hourly Operating Data for the common stack and also report Hourly
Operating Data for each unit. As a second example, if Unit 1 discharges through two stacks,
MSI and MS2, and emissions are monitored at each stack, report separate Hourly Operating
Data for each stack and also report Hourly Operating Data for Unit 1.
If a common stack serves Units 1, 2, and 3, but Unit 1 did not operate during the quarter, report
Hourly Operating Data for every clock hour in the quarter for Unit 1 with 0.00 as the
operating time and leave the remaining fields blank. The Hourly Operating Data records for
Units 2 and 3 will contain the appropriate operating data
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2.5 Hourly Operating Data
Hourly Operating Data XML Model
Figure 10: Hourly Operating Data XML Elements
~Lซ
Hou rlyOperatingData
' StackPipeiD
"Hour
'OperatingTime
'HourLoad
reCode
'MATSHourLoad
'LoadRange
" Common StackLoadRange
' FcFactor
~ FtiiFacfor
FwFactor
'FuelCode
" MATSStartupShutdownFtag
- Mori itorHoy i%VaJue Data
Ox
- -I MATSMcmitorHou rliyValueOata [+J
0..CD
Be rivedWoirtyValue-Data tfl
0..OB
MATSDerrvedHourlyV&lueOata |+j(
* 0.'.ฎ' *
aHourlyFuelFiowData |+j
:
HourlyGFMData 1+1
l? r"
0..x
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2.5 Hourly Operating Data
Hourly Operating Data X. einents
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID for the Hourly Operating Data. This is the
alphanumeric code assigned by a source to identify a unit, stack, or pipe.
Date (Date)
Report the date corresponding to the data being reported.
Hour (Hour)
Report the hour corresponding to the data being reported.
Operating Time (OperatingTime)
Report the fraction of the clock hour during which the unit combusted any fuel (or the fraction of
the clock hour during which the stack or pipe was used). You may use any equal increments
from hundredths (0.01 hr) to quarters (0.25 hr) of an hour.
If the unit, stack, or pipe did not operate, report "0.00." For common stack and multiple stack
configurations, report an operating time of "0.00" in the Hourly Operating Data record for
any clock hour in which none of the units that exhaust through a particular stack are operating or
for any clock hour in which the dampers are closed so that flue gas is unable to pass through the
stack.
If you elect to use a multiple-stack configuration to report NOx emissions data from a combined-
cycle combustion turbine that: (a) uses Appendix D to measure the unit-level heat input; and (b)
has a NOx-diluent monitoring system installed on each stack (i.e., on the main stack and the
bypass stack), report the stack operating times as follows:
For any hour in which all of the exhaust gases flow through one stack or the other, the
operating time for the stack that is in use will be equal to the unit operating time for that
hour, and the operating time for the other stack will be 0.00; and
For a transition hour, in which gases flow through both stacks during the entire hour or
any part of the hour:
o Report that fraction of the hour (if any) in which gases flow only through the
main stack as the "main stack operating time;" and
o Report the remainder of the hour in which gases either flow through both stacks
simultaneously or flow only through the bypass stack as the "bypass stack
operating time."
Operating Time for LME Units
Report the fraction of the clock hour during which the unit combusted any fuel (or the fraction of
the clock hour during which the stack or pipe was used).
Report a unit operating time of "0.00" for any clock hour in which the unit did not operate.
Hour Load (HourLoad)
For Part 75 reporting report hourly load information as either steam load or gross unit load.
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2.5 Hourly Operating Data
The units for average hourly gross unit load are to be reported in megawatts of electrical
generation or in either 1,000 lbs/hr or mmBtu/hr of steam generation. Note that this value
represents an hourly rate and not the total load for the hour. Do not correct steam load for
standard temperature and pressure; use steam load at measured temperature and pressure (see
Part 75, Appendix C, Section 2.2.1).
If you convert auxiliary heat input to the megawatts equivalent (e.g., for a heat recovery steam
generator with a duct burner) and add that value to megawatts for a gas turbine, you should
report the unit electric load in megawatts.
For multiple-stack configurations, with one exception, for each unit operating hour in which
gases flow through a particular stack or duct, report the unit load in both the stack-level and unit-
level Hourly Operating Data records for that hour. The lone exception is when the unit is
also subject to MATS and is required to report electrical load for compliance with an electrical
output-based standard. In that case, report the unit- and stack-level loads as described in the
MATSHourLoad data field.
For monitored common stacks, report the weighted sum of the hourly unit loads for all units that
exhaust through the stack, according to the following formula:
X (Loadu x OpTimeu)
Weighted Load =
OpTime CS
Leave this element blank (do not report zeros) for any clock hour in which the unit, stack, or pipe
did not operate. Also leave this element blank for units that do not produce electrical or steam
load (e.g., cement kilns, refinery process heaters, etc.).
Load Units of Measure Code (LoadUnitsOjMeasureCode)
Report the appropriate code to identify the load units of measure.
If you report steam load (klb/hr) or thermal output (mmBtu/hr) for Part 75 purposes, report the
appropriate code for steam load or mmBtu/hr in this data element and in the Monitoring Load
Data record of your monitoring plan even if you also report electrical load (megawatts) for
MATS Rule compliance in the MATSHourLoad data element below.
Table 8: Load Units of Measure Codes and Descriptions
Code
Description
MW
Electrical Load in Megawatts
KLBHR
Steam Load in Thousands of Pounds per Hour
mmbtuhr
Thermal Output in mmBtu per Hour
Leave this element blank for any clock hour in which the unit, stack, or pipe did not operate.
Also leave this element blank for units that do not produce electrical or steam load (e.g., cement
kilns, refinery process heaters, etc.).
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2.5 Hourly Operating Data
MATS Hour Load (MATSHourLoad)
If you are required to report electrical load to comply with the MATS rule (i.e., to demonstrate
compliance with an electrical output-based standard), you must report the hourly electrical load
(megawatts) in this data field (see 40 CFR Part 63, Subpart UUUUU, Appendix A, section
7.1.2.3 and Appendix B, section 10.1.2.3).
For cogeneration units, the MATS Hour Load represents the "gross output" as defined in
ง63.10042 of Subpart UUUUU.
For single unit-single stack exhaust configurations, report the hourly unit load.
For monitored common stack configurations, report the combined hourly load for the units that
share the stack.
If the unit has a multiple-stack or duct ("MS") exhaust configuration and:
1. Gases flow through all of the stacks or ducts continuously; and
2. The pollutant concentrations and stack gas flow rates are continuously monitored in all of
the stacks or ducts.
Then,for the purposes of MATS compliance:
Report the unit load in the unit-level Hourly Operating Data record for
each operating hour;
Report a flow rate-apportioned load value in this data field for each of the
stack-level Hourly Operating Data records for each operating hour.
Apportion the unit load to each stack or duct using formula MS-2.
If the stack gas flow rate for any of the multiple stacks or ducts is missing or invalid for any
operating hour, report MODC "38" in each of the stack-level MATSDerivedHourlyValue
records to indicate that the apportioned stack loads could not be determined and that the pollutant
emission rate for the unit could not be calculated for this hour.
Load Range (LoadRange)
Report an operating load range (load bin number) for each operating hour (see Appendix C to
Part 75) for units that produce electrical or steam load and that use load-based missing data
substitution for one or more monitored parameters. Monitored parameters that require load-based
missing data substitution include NOx emission rate, NOx concentration (for NOXC systems,
only), stack gas flow rate, and fuel flow rate.
For units that do not produce electrical or steam load (e.g., cement kilns, refinery process heaters,
etc.), report the operational bin number, if operational bins are used for missing data purposes. If
the operational bin number is indeterminable, report "0."
For a monitored common stack, the load bins are defined at the common stack on the basis of
combined unit load, and load-based missing data routines are applied at the common stack.
Report the common stack load bin number in the common stack Hourly Operating Data
record. If parameters that require load-based missing data substitution are also monitored at the
unit, report the load bin number for the unit in the unit level Hourly Operating Data record.
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2.5 Hourly Operating Data
For a multiple-stack configuration in which gases normally flow through both stacks or ducts
simultaneously (e.g., a twin-stack or split-breeching configuration), report the load bin number
for the monitored location within the configuration. For example, if Unit 1 discharges through
two stacks, MS1FGD and MS1BYP, and emissions are monitored only at MS1FGD, only report
the MS1FGD load bin number in the stack-level Hourly Operating Data record.
For load-based units, leave this element blank (do not report zeros) for any clock hour in which
the unit does not operate or gases do not flow through the stack (as applicable). Also leave this
element blank for non load-based units that do not use operational bins for missing data purposes
and for LME units.
Common Stack Load Range (CommonStackLoadRange)
For a common stack with installed stack flow monitor, if you have elected to establish 20 load
bins for missing data substitution purposes, report the appropriate load bin number using this
element. Note that this is an optional alternative to the standard load range.
Fc Factor (FcFactor)
If any emissions calculations at this location require use of the carbon-based F-factor, report the
appropriate Fc-factor value corresponding to the fuel(s) burned during the hour.
Fd Factor (FdFactor)
If any emissions calculations at this location require use of the dry-basis F-factor, report the
appropriate Fd-factor value corresponding to the fuel(s) burned during the hour.
Fw Factor (FwFactor)
If any emissions calculations at this location require use of the wet-basis F-factor, report the
appropriate Fw-factor value corresponding to fuel(s) burned during the hour.
Fuel Code (FuelCode)
You must report data in this field if: (1) you have elected to use the fuel-specific continuous
emissions monitoring system (CEMS) missing data option under ง75.33; or (2) you have an
exhaust configuration consisting of a monitored main stack and an unmonitored bypass stack,
and you opt to report the fuel-specific Maximum Potential Concentration (MPC) or maximum
potential NOx emission rate (MER) value during bypass hours (see งง75.16, 75.17 and 75.72).
Otherwise, reporting data in this field is optional. Select one Fuel Code shown in Table 9. This
field does not apply to MATS reporting.
Table 9: Fuel Codes and Descriptions
Code
Description
MIX
Use this code for any hour in which fuels are co-fired
BFG
Blast Furnace Gas
BUT
Butane (if measured as a gas)
C
Coal
CDG
Coal-Derived Gas
COG
Coke Oven Gas
CRF
Coal Refuse (culm or gob)
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Code
Description
DGG
Digester Gas
DSL
Diesel Oil
LFG
Landfill Gas
LPG
Liquefied Petroleum Gas (as defined in ง72.2)
NNG
Natural Gas
OGS
Other Gas
OIL
Residual Oil
OOL
Other Oil
OSF
Other Solid Fuel
PDG
Producer Gas
PNG
Pipeline Natural Gas (as defined in ง72.2)
PRG
Process Gas
PRP
Propane (if measured as a gas)
PRS
Process Sludge
PTC
Petroleum Coke
R
Refuse
RFG
Refinery Gas
SRG
Unrefined Sour Gas
TDF
Tire-Derived Fuel
W
Wood
WL
Waste Liquid
MATS Startup Shutdown Flag (MATSStartupShutdownFlag)
Report this flag in order to identify an hour as a MATS Startup or MATS Shutdown hour. Report
a flag of "U" to indicate a Startup hour or "D" to indicate a Shutdown hour. The field should be
left null if the location is not a MATS affected source or it is not a MATS Startup or MATS
Shutdown hour.
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2.5.1 Monitor Hourly Value Data
2.5.1 Monitor Hourly Value Data
Monitor Hourly Value Da rview
Use the Monitor Hourly Value Data (MHV) record to report each value measured by a
continuous emission monitoring system (CEMS), or stack gas flow rate monitoring system. The
monitored parameters may include SO2 concentration, NOx concentration, CO2 concentration, O2
concentration, H2O concentration (moisture), and volumetric flow. Use this record also to report
the appropriate missing data substitution values (except for parameters that do not have
substitute data requirements). These instructions contain a subsection for each measured
parameter, to give specific direction on how to report for that parameter.
SO2 Concentration
If you use continuous emissions monitoring systems (CEMS) to determine SO2 mass emissions
or SO2 emissions rate for MATS, report SO2 concentration in an MHV record for each hour or
partial hour of unit operation, with one exception: do not report an MHV record for hours in
which only gaseous fuel is combusted, if you account for SO2 mass emissions during those hours
using the provisions of ง75.11(e)(1) in lieu of operating and recording data from the SO2
monitoring system.
Volumetric Flow
If you use stack flow monitoring to determine hourly heat input rate or SO2, CO2, or NOx mass
emissions, report volumetric flow in an MHV record for each operating hour or partial operating
hour.
Table 10, below, summarizes which elements to report for S02C and FLOW MHV records.
Table 10: MHV Elements for S02C or Flow
MIIY Klemenls (0 Report
S()2C
Measured Data
jr How
Missing Data
Parameter Code
V
V
Unadjusted Hourly Value
V
Adjusted Hourly Value
V
V
Method of Determination Code (MODC)
V
V
Monitoring System ID
V
V
Component ID
V
V
Percent Available
V
V
Moisture Basis
NOx Concentration
If you use a NOx-diluent monitoring system to determine and report the NOx emission rate
and/or a NOx concentration monitor in conjunction with Stack Flow to determine NOx mass,
report an MHV record, as follows, for NOXC for each unit or stack operating hour as needed for
those determinations.
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2.5.1 Monitor Hourly Value Data
a) Monitoring locations with only a NOv-diluent monitoring system: Report the NOXC
MHV record for hours in which a quality-assured NOx concentration is available and a
quality-assured diluent gas (CO2 or O2) concentration is available. Whenever the NOx
concentration or diluent concentration is missing for an hour, report a NOx concentration
MHV record without an unadjusted value and report the appropriate substitute data value
for NOx emission rate in the Derived Hourly Value (DHV) record.
Report an MODC of 46 in the MHV records for NOXC if a) quality-assured NOXC is
not available for the hour, b) quality-assured diluent concentration is not available for the
hour, or c) both a and b are applicable.
Specific Considerations for locations with both primary and primary bypass NOx-diluent
monitoring systems:
When gases flow through both stacks of a combined-cycle turbine with primary
and primary bypass NOx-diluent monitoring systems designated under a single
monitoring location in the same hour, one set of MHV records should be reported
for each stack for the hour.
If both stacks are in control, the stack providing the measured NOx emission rate
value should report the measured data NOXC MHV record as normal. The other
stack should report the measured data NOXC MHV record and use an MODC of
47 if a) quality-assured NOXC is available for the hours, b) quality-assured
diluent concentration is available for the hour, and c) these concentration values
were not used in determining the hourly NOx emission rate.
If the HRSG stack is in control and the bypass stack is out of control, the NOx
emission rate will be determined by the greater of the reading from the HRSG
stack or MER, or the greater of the reading from the HRSG stack or PB missing
data value. If the NOx emission rate is quality-assured from the HRSG stack, a
standard measured data NOXC MHV record should be reported from the HRSG
stack and a missing data NOXC MHV record using MODC 48 should be reported
from the bypass stack. If the NOx emission rate is a substitute data value, the
HRSG stack should report a measured data NOXC MHV record using MODC 47,
and a missing data NOXC MHV record using MODC 46 should be reported from
the bypass stack.
If the HRSG stack is out of control and the bypass stack is in control, the NOx
emission rate will be determined by the greater of the readings from the bypass
stack or standard unit-level missing data value, or the greater of the readings from
the bypass stack or HRSG missing data value. If the NOx emission rate is quality-
assured from the bypass stack, a standard measured data NOXC MHV record
should be reported from the bypass stack and a missing data NOXC MHV record
using MODC 48 should be reported from the HRSG stack. If the NOx emission
rate is a substitute data value, the bypass stack should report a measured data
NOXC MHV record using MODC 47, and a missing data NOXC MHV record
using MODC 46 should be reported from the HRSG stack.
If both the HRSG and bypass stacks are out of control, the NOx emission rate will
be a substitute data value. The stack used in determining the NOx emission rate
should report a missing data NOXC MHV record using MODC 46 and the other
stack should report a missing data NOXC MHV record using MODC 48.
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2.5.1 Monitor Hourly Value Data
The elements to report for (a) are summarized in Table 11.
Table 11: MHVElements for NOXC Record (NOX Rate System Only)
MHV Elements to Report
NOXC MHV Record
Measured Data
Missing Data
Parameter Code
Unadjusted Hourly Value
Adjusted Hourly Value
MODC
Monitoring System ID
Component ID
Percent Available
Moisture Basis
b) Monitoring locations with only a NCK concentration monitoring system: Report the
NOXC MHV record for every operating hour. If a valid NOx concentration is not
obtained for the hour, report substitute data in the Adjusted Hourly Value element of
the record using the applicable missing data procedures for NOXC.
c) Monitoring locations with both a NOv-diluent and a NQV concentration monitoring
system: Report the NOXC MHV record for every operating hour using the Monitoring
System ID for the NOx concentration monitoring system. If a valid NOx concentration is
not obtained for the hour, report the applicable substitute NOx concentration data in the
MHV record using the applicable missing data procedures for NOXC; and report the
appropriate substitute data value for NOx emission rate in the DHV record.
The elements to report for (b) and (c) are summarized in Table 12 below.
Table 12: /V///(/Elements for NOXC Record (NOXC System)
MHV Elements to Report
NOXC MHV Record
Measured Data
Missing Data
Parameter Code
Unadjusted Hourly Value
Adjusted Hourly Value
MODC
Monitoring System ID
Component ID
Percent Available
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2.5.1 Monitor Hourly Value Data
MIIY Klcmcnls to Report
\()\( Ml
Moiisuivd Diitii
IV Record
Missiii" l);it:i
Moisture Basis
1 Report the NOXC System ID.
Note that for units with add-on NOx emission controls, hours in which the flue gases are
discharged through an unmonitored bypass stack are considered to be missing data hours.
However, when the outlet NOx monitor is unavailable and proper operation of the emission
controls is not verified, ง75.34 (a)(1) allows you to report data from a certified NOx monitor at
the control device inlet. If you choose this option, these hours are treated as "available" hours for
the purposes of the missing data look backs and percent monitor data availability (PMA)
calculations.
For a summary of these requirements, see Table 13 below.
Reporting of High Range and Full Scale Exceedance Defaults
Treat any hour(s) in which a default high range value (200 percent of Maximum Potential
Concentration (MPC)) or a full scale exceedance value (200 percent of range) is used in the
calculation of the hourly average NOx concentration as follows:
a) For NOv concentration monitoring systems: Treat these hours as quality-assured monitor
operating hours and include them in missing data lookback and as available hours for
percent monitor data availability calculations.
b) For NOv-diluent monitoring systems:
1. If a quality-assured diluent value is available for the hour, treat the hour as
quality-assured data and use the appropriate NOx concentration value in
conjunction with the quality-assured average diluent gas concentration for the
hour to calculate and report NOx emission rate in the DHV record.
2. If a quality-assured diluent gas concentration is not available for the hour, then
consider the NOx emission rate data for the hour to be missing and do not report
the unadjusted hourly value or adjusted hourly value in the MHV record for the
hour. Instead, report the maximum potential NOx emission rate (MER) as a
substitute data value in a DHV record using an MODC of 25.
c) Where both NCK concentration and NOv-diluent monitoring systems are identified:
1. If a quality-assured diluent value is available for the hour, treat the hour as a
quality-assured monitor operating hour and include it in the missing data
lookback and as an available hour for percent monitor data availability
calculations. Also, use the NOx concentration value in conjunction with the
quality-assured average diluent gas concentration for the hour to calculate and
report NOx emission rate in the DHV record.
2. If a quality-assured diluent gas concentration is not available for the hour, treat
the hour as a quality-assured monitor operating hour for NOXC and include it in
the missing data lookback for NOXC and as an available hour for percent monitor
data availability calculations for the NOXC system. However, the NOx emission
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2.5.1 Monitor Hourly Value Data
rate data for the hour is considered to be missing. Report the MER as a substitute
data value in a DHV record using an MODC of 25.
Table 13: Summary of NO^ Monitor Hourly Value Record Reporting Requirements
I so of \()\ Analyzer
Monitoring System
II) I sed
Missing Data Instructions
For NOx emission rate only
or
Both NOx emission rate and NOx
mass calculation using
NOx emission rate x Heat input rate
Blank
(Report the NOx-diluent
monitoring system ID in
the DHV record)
Leave the unadjusted and adjusted hourly
values blank in the MHV record for the
hour. Perform NOx missing data substitution
in the DHV record (if NOx or diluent
concentration is unavailable).
For NOx mass calculation using
NOx concentration x stack flow
NOx concentration
monitoring System ID
Perform missing data substitution for NOx
concentration in an MHV record.
Both NOx emission rate and NOx
mass calculation using NOx
concentration x stack flow
NOx concentration
monitoring System ID
Perform missing data substitution for NOx
concentration in an MHV record. Also
perform missing data substitution in the
DHV record for NOx emission rate if either
the NOx or diluent concentration is missing.
CO2 Concentration
Report a MHV record for CO2 Concentration only if you use a CO2 analyzer to determine CO2
concentration. If you use an O2 concentration monitor and Equation F-14a or F-14b to determine
CO2 concentration for each hour, report a MHV record for O2 concentration for the hour (see the
instructions for O2 Concentration below) and report the calculated CO2 concentration in a DHV
record.
If you use a CO2 analyzer reading to calculate NOx emission rate, CO2 mass emission rate,
and/or Heat Input, report a MHV record for C02C for each unit or stack operating hour. If you
also use a CO2 analyzer reading to calculate HC1, HF, Hg, and/or SO2 emission rates, record a
MHV record for C02C for each unit or stack operating hour.
Table 14: MFFElements for C02C
C ()2C MIIY
Records
MIIY Klements to Report
Measured Data
Missing Data'
Parameter Code
V
Unadjusted Hourly Value
V
Adjusted Hourly Value
MODC
V
V
Monitoring System ID
1
1
Component ID
V
V
Percent Available
2
V
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2.5.1 Monitor Hourly Value Data
MIIY KIciikmHs to Report
C ()2C Mil
Mcsismvd Diitii
V Records
Missiii" Dsitsr'
Moisture Basis
1 If the CO2 component is part of a CO2 system, report the CO2 System ID. Otherwise, leave the System
ID blank.
2 If the CO2 is used to calculate heat input or CO2 mass rate, report the Percent Available value for every
operating hour.
3 If the CO2 value is used to calculate heat input or CO2 mass rate, report an MHV record for C02C for
every operating hour. Otherwise, do not report C02C MHV records for missing data hours.
4 If MODC 46 or 48 is used, do not report the unadjusted hourly value.
a) Whenever vou use a CO? monitor to determine CO? mass emissions and/or for heat input
rate: Report a MHV record using the CO2 Monitoring System ID, for each hour or partial
hour of unit operation. When the hourly CO2 concentration is missing, or for hours in
which the flue gases are discharged through an unmonitored bypass stack, use the
missing data routines in ง75.35 and 75.36 to provide substitute data values.
If the CO2 monitor is also used as the diluent monitor for a NOx-diluent monitoring
system, whenever a CO2 RATA is failed on the CO2 monitoring system, then both the
CO2 and NOx-diluent monitoring systems are considered out-of-control. (See Appendix B
ง2.3.2(g)). Report the applicable substitute CO2 concentration data in the MHV record
using the applicable missing data procedures for C02C. For NOx emission rate, report the
appropriate substitute data value in the DHV record.
However, if the CO2 data for the CO2 monitoring system is considered out-of-control due
to the expiration of the applicable CO2 RATA but the NOx RATA has not yet expired,1
then substitute data should only be used for CO2 mass and heat input rate calculations and
not for calculation of the NOx emission rate. For NOx emission rate, the actual measured
CO2 concentration should be used. In such cases, report two CO2 concentrations for each
hour until a CO2 RATA is completed. First, report the appropriate substitute CO2 data
using the CO2 System ID. Second, report the actual CO2 value recorded by the CO2
component, leaving the System ID blank. (The actual CO2 value will be used in the NOx
emission rate calculation for the hour, while the substitute data value will be used in the
CO2 mass and heat input rate calculations.)
b) If vou use the CO? monitor only to calculate NQV emission rate: Report an MHV record
for CO2 concentration. Leave the Monitoring System ID blank. Leave the unadjusted or
adjusted hourly values blank for the hour if: (1) a quality-assured CO2 concentration is
not available; or (2) a quality-assured NOx concentration is not available; or (3) both (1)
and (2). Instead, report a substitute data value for NOx emission rate in the DHV record
and report an MODC of "46" in the C02C MHV record.
1 Note that this situation should only arise if the NOx emission rate RATA was done using O2 as the diluent for the
reference method or if the CO2 RATA data are not submitted. If the RATA was conducted using a CO2 diluent in
the reference method, then there should be sufficient CO2 data available to submit a RATA for the CO2 system.
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2.5.1 Monitor Hourly Value Data
Note that hours in which the flue gases are discharged through an unmonitored bypass
stack are considered to be missing data hours. For these hours, do not report a MHV
record. In the DHV record, report the NOx MER and MODC of "23."
When a default high range value (200 percent of MPC) or a full-scale exceedance value
(200 percent of the range) is used in the calculation of the hourly average NOx
concentration, the NOx concentration is considered to be both quality-assured and
available. Therefore, if a quality-assured CO2 concentration is available for that hour,
report a MHV record and calculate the NOx emission rate in the usual manner. However,
if a quality-assured CO2 concentration is not available for that hour, the NOx emission
rate data for the hour are considered missing. In that case, report a MHV record for the
hour using an MODC of "46" and report the maximum potential NOx emission rate
(MER) as a substitute data value in DHV record, using an MODC of "25."
Specific Considerations for locations with both primary and primary bypass NOx-
diluent monitoring systems:
When gases flow through both stacks of a combined-cycle turbine with primary
and primary bypass NOx-diluent monitoring systems designated under a single
monitoring location in the same hour, one set of MHV records should be reported
for each stack for the hour.
If both stacks are in control, the stack providing the measured NOx emission rate
value should report the measured data C02C MHV record as normal. The other
stack should report the measured data C02C MHV record and use an MODC of
47 if a) quality-assured NOXC is available for the hour, b) quality-assured diluent
concentration is available for the hour, and c) these concentration values were not
used in determining the hourly NOx emission rate.
If the HRSG stack is in control and the bypass stack is out of control, the NOx
emission rate will be determined by the greater of the readings from the HRSG
stack or MER, or the greater of the readings from the HRSG stack or PB missing
data value. If the NOx emission rate is quality-assured from the HRSG stack, a
standard measured data C02C MHV record should be reported from the HRSG
stack and a missing data C02C MHV record using MODC 48 should be reported
from the bypass stack. If the NOx emission rate is a substitute data value, the
HRSG stack should report a measured data C02C MHV record using MODC 47,
and a missing data C02C MHV record using MODC 46 should be reported from
the bypass stack.
If the HRSG stack is out of control and the bypass stack is in control, the NOx
emission rate will be determined by the greater of the readings from the bypass
stack or standard unit-level missing data value, or the greater of the readings from
the bypass stack or HRSG missing data value. If the NOx emission rate is quality-
assured from the bypass stack, a standard measured data C02C MHV record
should be reported from the bypass stack and a missing data C02C MHV record
using MODC 48 should be reported from the HRSG stack. If the NOx emission
rate is a substitute data value, the bypass stack should report a measured data
C02C MHV record using MODC 47, and a missing data C02C MHV record
using MODC 46 should be reported from the HRSG stack.
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2.5.1 Monitor Hourly Value Data
If both the HRSG and bypass stacks are out of control, the NOx emission rate will
be a substitute data value. The stack used in determining the NOx emission rate
should report a missing data C02C MHV record using MODC 46 and the other
stack should report a missing data C02C MHV record using MODC 48.
c) If vou use the CO? monitor to calculate HC1. HF. Hg. and/or SO? emission rates and the
CO? monitor is out-of-control: Report the applicable substitute CO2 concentration data as
required under Part 75 in the MHV record using the applicable missing data procedures
for C02C. Note that MATS does not allow the use of missing data routines. Therefore,
report the appropriate out-of-control method of determination code (MODC) for the HC1,
HF, Hg, and/or SO2 emissions rates in the MATS Derived Hourly Value Data
(MDHV) record. If the CO2 monitor is only used to calculate MATS emission rates,
report an MODC of "46" when the CO2 monitor is out-of-control.
O2 Concentration
Report an MHV record for O2 concentration for each hour in which you use the O2 concentration
to determine the hourly NOx, HC1, HF, Hg, or SO2 emission rates, heat input rate, or CO2
concentration. Report two MHV records for O2 concentration (one wet-basis and one dry-basis)
for each hour in which you use O2 concentration to determine percent moisture.
If the O2 value is used for the heat input calculation, report the MHV record for O2 for every
operating hour and use the appropriate substitute data for any operating hour in which a quality-
assured O2 value in not obtained.
Table 15: MFFElements for 02C
()2C MIIY Records
MIIY Klemenls to Report
Measured Data
Missing Data4
Parameter Code
V
V
Unadjusted Hourly Value
V
Adjusted Hourly Value
MODC
V
V
Monitoring System ID
1
1
Component ID
V
V
Percent Available
2
V
Moisture Basis
3
3
1 If the O2 component is part of a CO2 system, report the CO2 System ID. If the O2 component is part of
an O2 system, report the O2 System ID. Otherwise, leave the System ID blank.
2 If the O2 value is used to calculate heat input, report the Percent Available value for every operating
hour.
3 If the O2 value is used to calculate H20, report the Moisture basis. Otherwise, leave this field blank.
4 If the O2 value is used to calculate heat input, report an MHV record for 02C for every operating hour.
5 If MODC 46 or 48 is used, do not report the unadjusted hourly value.
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2.5.1 Monitor Hourly Value Data
a) Whenever vou use an O? monitor to determine CO? concentration. CO? mass emissions,
and/or for heat input rate (as part of a CO? monitoring system): Report an MHV record
using the CO2 Monitoring System ID, for each hour or partial hour of unit operation in
which a quality-assured O2 value is obtained. When the hourly O2 concentration is
missing, or for hours in which the flue gases are discharged through an unmonitored
bypass stack, use the missing data routines in ง75.36 to provide substitute data values if
the O2 value is used to determine heat input.
If the O2 monitor is also used as the diluent monitor for a NOx-diluent monitoring system,
whenever a CO2 RATA is failed on the CO2 monitoring system, then the CO2, and NOx-
diluent monitoring systems (as applicable) are each considered to be out-of-control. (See
Appendix B ง2.3.2(g).) If heat input is calculated from the O2, report the applicable
substitute O2 concentration data in the MHV record using the applicable missing data
procedures for 02C. For CO2 concentration, CO2 mass, and NOx emission rate, report the
appropriate substitute data values in the appropriate DHV records. However, if the O2
data for the CO2 monitoring system is considered out-of-control due to the expiration of
the applicable CO2 RATA but the NOx RATA has not yet expired,2 then substitute data
should only be used for CO2 concentration and heat input rate calculations and not for
calculation of the NOx emission rate. The actual measured O2 concentration should be
used to calculate NOx emission rate. In such cases, report two O2 concentrations for each
hour until a CO2 RATA is completed. First, report the appropriate substitute O2 data
using the CO2 system. Second, report the actual O2 value recorded by the O2 component,
leaving the System ID blank. (The monitor O2 value will be used in the NOx emission
rate calculation for the hour, while the substitute data value will be used in the heat input
rate calculation.)
If the O2 monitor is only used to determine derived CO2 concentration, report an MODC
of "46" when O2 concentration is unavailable.
b) Whenever vou use an O? monitoring system to determine heat input rate: Report an MHV
record using the O2 Monitoring System ID, for each hour or partial hour of unit
operation. When the hourly O2 concentration is missing, or for hours in which the flue
gases are discharged through an unmonitored bypass stack, use the missing data routines
in ง75.36 to provide substitute data values.
If the O2 monitor is also used as the diluent monitor for a NOx-diluent monitoring system,
whenever O2 RATA is failed for the O2 monitoring system, then the NOx-diluent
monitoring systems is also considered to be out-of-control. (See Appendix B ง2.3.2(g).)
For heat input that is calculated from the O2, report the applicable substitute O2
concentration data in the MHV record using the applicable missing data procedures for
02C. For NOx emission rate, report the appropriate substitute data values in the
appropriate DHV record. However, if the O2 data for the O2 monitoring system is
considered out-of-control due to t3he expiration of the applicable O2 RATA but the NOx
RATA has not yet expired,3 then substitute data should only be used for calculating heat
input rate and not for calculation of the NOx emission rate. The actual measured O2
2 Note that this situation should only arise if the NOx emission rate RATA was done using O2 as the diluent for the
reference method or if the CO2 RATA data are not submitted. If the RATA was conducted using a CO2 diluent in
the reference method, then there should be sufficient CO2 data available to submit a RATA for the CO2 system.
3 Note that this situation should only arise if the NOx emission rate RATA was done using CO2 as the diluent for the
reference method or if the O2 RATA data are not submitted. If the RATA was conducted using an O2 diluent in
the reference method, then there should be sufficient O2 data available to submit a RATA for the O2 system.
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2.5.1 Monitor Hourly Value Data
concentration should be used to calculate NOx emission rate. In such cases, report an
additional O2 concentration record for each hour until an O2 RATA is completed. First,
report the appropriate substitute O2 data using the O2 System ID. Secondly, report the
actual O2 value recorded by the O2 component leaving the System ID blank. (The
recorded O2 value will be used in the NOx emission rate calculation for the hour, while
the 02C substitute data value will be used in the heat input rate calculations.)
c) If the O? value is used only for calculating NCK emission rate: Report the MHV record
for all stack operating hours. Report O2 unadjusted and adjusted hourly values only when
quality-assured values are obtained for both O2 and NOx concentration. Leave the System
ID blank.
Leave the unadjusted or adjusted hourly values blank for the hour if (1) a quality-assured
O2 concentration is not available; or (2) a quality-assured NOx concentration is not
available, or (3) both (1) and (2). Instead, report a substitute data value for NOx emission
rate in the DHV record and report an MODC of "46" in the 02C MHV record.
Specific Considerations for locations with both primary and primary bypass NOx-
diluent monitoring systems:
When gases flow through both stacks of a combined-cycle turbine with primary
and primary bypass NOx-diluent monitoring systems designated under a single
monitoring location in the same hour, one set of MHV records should be reported
for each stack for the hour.
If both stacks are in control, the stack providing the measured NOx emission rate
value should report the measured data 02C MHV record as normal. The other
stack should report the measured data 02C MHV record and use an MODC of 47
if a) quality-assured NOXC is available for the hour, b) quality-assured diluent
concentration is available for the hour, and c) these concentration values were not
used in determining the hourly NOx emission rate.
If the HRSG stack is in control and the bypass stack is out of control, the NOx
emission rate will be determined by the greater of the readings from the HRSG
stack or MER, or the greater of the readings from the HRSG stack or PB missing
data value. If the NOx emission rate is quality-assured from the HRSG stack, a
standard measured data 02C MHV record should be reported from the HRSG
stack and a missing data 02C MHV record using MODC 48 should be reported
from the bypass stack. If the NOx emission rate is a substitute data value, the
HRSG stack should report a measured data 02C MHV record using MODC 47,
and a missing data 02C MHV record using MODC 46 should be reported from
the bypass stack.
If the HRSG stack is out of control and the bypass stack is in control, the NOx
emission rate will be determined by the greater of the readings from the bypass
stack or standard unit-level missing data value, or the greater of the readings from
the bypass stack or HRSG missing data value. If the NOx emission rate is quality-
assured from the bypass stack, a standard measured data 02C MHV record should
be reported from the bypass stack and a missing data 02C MHV record using
MODC 48 should be reported from the HRSG stack. If the NOx emission rate is a
substitute data value, the bypass stack should report a measured data 02C MHV
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2.5.1 Monitor Hourly Value Data
record using MODC 47, and a missing data 02C MHV record using MODC 46
should be reported from the HRSG stack.
If both the HRSG and bypass stacks are out of control, the NOx emission rate will
be a substitute data value. The stack used in determining the NOx emission rate
should report a missing data 02C MHV record using MODC 46 and the other
stack should report a missing data 02C MHV record using MODC 48.
Note that hours in which the flue gases are discharged through an unmonitored bypass
stack are considered to be missing data hours. (For these hours, do not report an MHV
record. In the DHV record, report the NOx MER and an MODC of "23.")
d) If vou use the O? monitor to calculate HC1. HF. Hg. and/or SO? emission rates and the O?
monitor is out-of-control: Report the applicable substitute O2 concentration data as
required under Part 75 in the MHV record using the applicable missing data procedures
for 02C. Note that MATS does not allow the use of missing data routines. Therefore,
report the appropriate out-of-control method of determination code (MODC) for the HC1,
HF, Hg, and/or SO2 emissions rate in the MATS Derived Hourly Value Data
(MDHV) record. If the O2 monitor is only used to calculate MATS emission rates, report
an MODC of "46" when the O2 monitor is out-of-control.
e) If vou also use wet and dry O? monitors to determine the hourly percent moisture: Report
two O2 MHV records for each hour. Report the wet O2 measurement with a "W" as the
MoistureBasis data element and report the dry O2 measurement with a "D" as the
MoistureBasis data element. If either the wet or dry O2 component is also used to
calculate heat input, NOx, HC1, HF, Hg, and/or SO2 emission rates, and/or CO2
concentration, then follow the applicable reporting instructions from sections (a), (b), (c),
or (d) above, to report the data for that component. For the remaining component, report
the MHV for each hour, and leave the System ID blank.
If either O2 value is missing, or for hours in which the flue gases are discharged through
an unmonitored bypass stack, perform missing moisture data substitution in the DHV
record for moisture, in accordance with ง75.37.
If the O2 monitors are only used to determine hourly percent moisture and either O2 value
is missing, report an MODC of "46" for both the wet and dry O2 monitors.
Moisture (H20)
For any unit or stack that monitors H2O with a moisture sensor (or, for saturated gas streams,
from a temperature sensor and look-up table), report the moisture value in a moisture MHV
record for each operating hour or partial operating hour.
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2.5.1 Monitor Hourly Value Data
Table 16: MFFElements for H20
MIIY Klemenls (0 Report
III
Measured Data
!()
Missiii" Data
Parameter Code
V
V
Unadjusted Hourly Value
V
V
Adjusted Hourly Value
MODC
V
V
Monitoring System ID
V
V
Component ID
V
V
Percent Available
V
V
Moisture Basis
If you use a fuel-specific default moisture value, as allowed under ง75.11 or ง75.12 (for coal,
wood, and natural gas burning units only), report the value in the Monitor Default Data
record and use this constant in the calculation. Do not report a moisture MHV record on an
hourly basis. However, if you have more than one active fuel-specific default moisture value
defined in your monitoring plan, report the fuel-specific or pro-rated moisture value used in your
emissions calculations in an H2O DHV record.
The Part 75 missing data procedures for moisture are found in ง75.37. These procedures are
modeled after the standard missing data procedures for SO2. In most instances, the moisture
missing data algorithm is the inverse of the SO2 algorithm (i.e., the lower moisture values are
more conservative and therefore an inverted moisture missing data algorithm must be applied
(using 10th percentile values instead of 90th percentile values, minimum values instead of
maximum values, etc.)). However, when Equations 19-3, 19-4, or 19-8 from Method 19 of 40
CFR Part 60 are used to determine NOx emission rate, a higher moisture value is more
conservative and therefore the standard SO2 missing data algorithm must be applied.
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2.5.1 Monitor Hourly Value Data
Monitor Hourly Value Data XML Model
Figure 11: Monitor Hourly Value Data XML Elements
Monitor Hourly Value Data XML Elements
Parameter Code (ParameterCode)
Report the Parameter Code that corresponds to the parameter monitored at the location defined
by the Stack Pipe ID or Unit ID. Use the appropriate uppercase code as shown in Table 17.
Table 17: Parameter Codes and Descriptions for the MHVData Record
Code
Description
C02C
CO2 Concentration (%, pet)
FLOW
Volumetric Flow Rate (scfh)
H20
Moisture (using moisture sensors, or temperature sensors)
(%, pet)
NOXC
NOx Concentration (ppm)
02C
O2 Concentration (%, pet)
S02C
SO2 Concentration (ppm)
Unadjusted Hourly Value (UnadjustedHourlyValue)
Report the unadjusted concentration or stack flow value for the hour. See below for parameter-
specific instructions.
SO? Concentration
Report the unadjusted, quality-assured SO2 concentration for the hour, expressed in parts per
million (ppm) and round the resulting value to the appropriate number of decimal places per
Table 18. For hours in which very low sulfur fuel is combusted, report the actual S02
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2.5.1 Monitor Hourly Value Data
concentration even if you report a 2.0 ppm default value in the derived hourly value record.
Leave this field blank for hours in which you use substitute data.
Leave this field blank for hours in which the flue gases are routed through an unmonitored
bypass stack, or when the outlet SO2 monitor is unavailable and proper operation of the emission
controls is not verified, if you report the MPC for those hours. However, if you report data from
a certified inlet monitor during those hours, report the unadjusted SO2 concentration recorded by
the monitor.
Do not leave this field blank for hours in which: (1) very low sulfur fuel is combusted and you
report a 2.0 ppm default value in the derived hourly value record; or (2) you use the default high
range value of 200 percent of the MPC in the calculation of the hourly SO2 concentration; or (3)
a full-scale exceedance occurs and you use 200 percent of the range in the calculation of the
hourly SO2 concentration. All of the hours described in (1) - (3), above, are treated as quality-
assured monitor operating hours.
NOv Concentration
For both NOx concentration monitoring systems and NOx-diluent monitoring systems, report the
unadjusted, quality-assured NOx concentration for the hour, expressed in parts per million (ppm)
and round the resulting value to the appropriate number of decimal places per Table 18. Leave
this field blank for hours in which you use substitute data for NOx concentration or MODC "46"
for locations with only aNOx-diluent monitoring system.
Do not leave this field blank for hours in which: (1) you use a default high range value of 200
percent of the MPC in the calculation of the hourly NOx concentration; or (2) a full-scale
exceedance occurs and you use 200 percent of the range in the calculation of the hourly NOx
concentration. All of the hours described in (1) and (2), above are treated as quality-assured
monitor operating hours. Refer to the Part 75 Emissions Monitoring Policy Manual for further
discussion of overscaling and use of the default high range.
For units with add-on NOx emission controls, if you report data from a certified control device
inlet monitor during hours in which the outlet NOx monitor is unavailable and proper operation
of the emission controls is not verified, report the average, unadjusted NOx concentration
recorded by the inlet monitor.
CO? Concentration
Report the CO2 concentration for the hour, expressed in percent CO2 (VoCOi) and round the
resulting value to the appropriate number of decimal places per Table 18. If applicable, during
hours in which you use substitute data, or for hours in which the flue gases are discharged
through an unmonitored bypass stack, report the substituted value obtained from the CO2 missing
data procedures under งง75.35 or 75.36 (as applicable). If MODC "46" is used, indicating that
the CO2 concentration for aNOx-diluent system is unavailable, leave this field blank. Also leave
this field blank when MODC "46" is used for a CO2 monitor used only to determine MATS
emission rates.
If applicable for Hg, HC1, HF, SO2, and/or NOx emission rate calculations, for each hour in
which you use the diluent cap value to calculate emission rate, report the actual quality-assured
CO2 concentration in MHV record for C02C and appropriate MODC ("01" through "04"), and
report an MODC of "14" in the DHV record for NOx emission rate and/or an MODC of "37" in
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2.5.1 Monitor Hourly Value Data
the MDHV for Hg, HC1, HF, or SO2 emission rate. Note: For MATS reporting, use of the diluent
cap is restricted to startup and shutdown hours (as defined in Section 63.10042).
Whenever it is necessary to report a second CO2 concentration record to calculate Hg and/or NOx
emission rate for an hour, report the actual CO2 concentration for the hour and the appropriate
MODC (either "01" or "02"). See instructions under Description of Data for CO2 Concentration.
O? Concentration
Report O2 concentration for the hour, expressed in %Oi, and round the resulting value to the
appropriate number of decimal places per Table 18. For each hour in which you use the diluent
cap value to calculate Hg, HC1, HF, SO2, and/or NOx emission rate, report the actual quality-
assured O2 concentration and appropriate MODC ("01" through "04"). For each such hour,
report an MODC of "14" in the NOx emission rate DHV record and/or an MODC of "37" in the
MDHV for Hg, HC1, HF, or SO2 emission rate. Note: For MATS reporting, use of the diluent cap
is restricted to startup and shutdown hours (as defined in Section 63.10042).
Leave this field blank if MODC "46" is used, indicating that the O2 concentration for a NOx-
diluent system is unavailable and/or the O2 concentration used only to determine derived CO2
concentration or hourly moisture is unavailable. Also leave this field blank when MODC "46" is
used for an O2 monitor used only to determine MATS emission rates.
For any hour in which there is a full scale exceedance of the O2 monitor range, report the
appropriate diluent cap value for the type of unit and an MODC of "20." You must also report a
default record in the monitoring plan with a parameter code of 02X and a Default Purpose Code
of "DC" containing this value even if you do not calculate an hourly NOx Emissions Rate. (Note
that you may instead report a time weighted average calculated using the diluent cap value for
the portion of the hour that the monitoring range was exceeded with the quality assured data
collected during the portion of the hour when the range was not exceeded. In this case, report the
hourly average but use an MODC of "20" to indicate a range exceedance has occurred during the
hour.) If you use wet and dry O2 monitors to determine the hourly percent moisture and both
values are quality-assured, report two O2 MHV records for each hour.
If you use O2 concentration for the heat input rate calculation, report the appropriate substitute
data value in this field when a quality-assured O2 concentration for the hour is unavailable or for
hours in which the flue gases are discharged through an unmonitored bypass stack.
Moisture
Report moisture for the hour, expressed in %H20, and round the resulting value, obtained either
from a moisture sensor, or for saturated gas streams, from a temperature sensor and look-up
table, to the appropriate number of decimal places per Table 18. Report the appropriate substitute
data value for hours in which a quality-assured moisture percentage is unavailable or for hours in
which the flue gases are discharged through an unmonitored bypass stack.
Volumetric Flow
For each operating hour (or partial operating hour) in which a quality-assured flow rate was
measured (MODC "01" through "04" and "54"), report the unadjusted flow rate in units of scfh
(wet-basis). Report flow rate to the appropriate number of decimal places per Table 18. For
missing data hours, leave this field blank (this includes hours in which the flue gases are
discharged through an unmonitored bypass stack).
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2.5.1 Monitor Hourly Value Data
If a start-up or shut-down hour results in a stack flow rate that is too low to be registered by the
stack flow monitor, you may report a default minimum stack flow rate of 1,000 scfh. Report an
MODC of "55" for the hour. Manual entry of this MODC is permitted.
Adjusted Hourly Value (AdjustedHourlyValue)
Leave this field blank for parameters C02C, H20, and 02C.
SO? Concentration
For each hour in which you obtain quality-assured values, apply the appropriate bias adjustment
factor (BAF) to the rounded average SO2 concentration for the hour. Report the adjusted SO2
concentration for the hour in ppm and round the resulting value to the appropriate number of
decimal places per Table 18.
Note that for an initial certification, analyzer replacement, or complete monitoring system
replacement (as indicated by reporting a QA and Certification Event record with a
QACertificationEventCode value of "100," "101," "120," or "125"), if you are using conditional
data validation, the BAF is uncertain during the conditional data period. Therefore, apply a BAF
of 1.000 from the beginning of the conditional data validation period to the completion hour of
the certification or recertification RATA.
For each hour in which you use missing data procedures, report the substitute data value.
For each hour in which the flue gases are routed through an unmonitored bypass stack, or when
the outlet SO2 monitor is unavailable and proper operation of the emission controls is not
verified, you may either report the MPC in this field or, if data are available from a certified inlet
monitor, report the bias-adjusted SO2 concentration measured by the monitor.
For each hour in which only very low sulfur fuel (as defined in ง72.2) is combusted, report the
bias-adjusted hourly average SO2 concentration, unless it is less than 2.0 ppm, in which case,
report "2.0 ppm."
For each hour in which a default high range value is used in the calculation of the hourly average
SO2 concentration, report the bias-adjusted hourly average in this field unless application of the
BAF causes the hourly average to exceed 200 percent of the MPC, in which case, report 200
percent of the MPC.
When a full-scale exceedance of the high range occurs and 200 percent of the range is used in the
calculation of the hourly average SO2 concentration, report the bias-adjusted hourly average in
this field unless application of the BAF causes the hourly average to exceed 200 percent of the
range, in which case, report 200 percent of the range.
Refer to the Part 75 Emissions Monitoring Policy Manual for a further discussion of overscaling
and use of the default high range value.
NOv Concentration
Report data in this field only if you use NOx concentration times stack flow rate to determine
NOx mass emissions. Leave this field blank if you do not have a NOx concentration system.
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2.5.1 Monitor Hourly Value Data
For each hour in which you obtain a quality-assured value, apply the appropriate adjustment
factor (1.000 or system BAF) to the rounded average NOx concentration for the hour. Report the
adjusted average NOx concentration for the hour in ppm and round the resulting value to the
appropriate number of decimal places per Table 18.
Note that for an initial certification, analyzer replacement, or complete monitoring system
replacement (as indicated by reporting a QA and Certification Event record with a
QACertificationEventCode value of "100," "101," "120," or "125"), if you are using conditional
data validation, the BAF is uncertain during the conditional data period. Therefore, apply a BAF
of 1.000 from the beginning of the conditional data validation period to the completion hour of
the certification or recertification RATA.
For each hour in which NOx concentration is missing, report the substitute NOx concentration
value.
For each hour in which a default high range value is used in the calculation of the hourly average
NOx concentration, report the bias-adjusted hourly average in this field, unless it exceeds 200
percent of the MPC, in which case, report 200 percent of the MPC.
When a full-scale exceedance of the high range occurs and 200 percent of the range is used in the
calculation of the hourly average NOx concentration, report the bias-adjusted hourly average in
this field, unless it exceeds 200 percent of the range, in which case, report 200 percent of the
range.
For units with add-on NOx emission controls, if you report data from a certified NOx monitor at
the control device inlet during hours in which the outlet NOx monitor is unavailable and proper
operation of the emission controls is not verified, report the average, bias-adjusted NOx
concentration recorded by the monitor. Include these hours in the missing data lookbacks and
treat them as available hours in the PMA calculations.
Volumetric Flow
For hours in which quality-assured data are obtained, apply the appropriate bias adjustment
factor (1.000 or BAF) to the rounded quality-assured value and report the adjusted stack flow for
the hour. Report the resulting value to the appropriate precision according to Table 18. For each
hour in which missing data procedures are used to report data, report the substitute data value.
When the flue gases are discharged through an unmonitored bypass stack, report the appropriate
substitute data value for flow rate (under ง75.33) in this field. Do not leave this field blank.
Note that for an initial certification, analyzer replacement, or monitoring system replacement (as
indicated by reporting a Q A and Certification Event record with a
QACertificationEventCode value of "300" or "305"), if you are using conditional data
validation, the BAF is uncertain during the conditional data period. Therefore, apply a BAF of
1.000 from the beginning of the conditional data validation period to the completion hour of the
certification or recertification RATA.
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2.5.1 Monitor Hourly Value Data
Table 18: Precision of Reported Values for Monitor Hourly Value Data
Parameter Codes
Required Precision*
C02C, H20, 02C
One Decimal Place
NOXC, S02C
One Decimal Place
FLOW
Nearest 1,000 scfh
* All substitute data values should be rounded to the same precision as quality-
assured data.
MODC Code (MODCCode)
Report the appropriate method of determination code (MODC) to identify the type of monitoring
system or value used to measure and report the concentration or stack flow for the hour. For
CEMS, manual entry of MODCs "16," "17," and "21" is permitted. EPA has reserved codes
"01" through "55." Codes "56" through "99" may be used by vendors and companies for other
purposes but must not be reported in a quarterly report.
Table 19: MODC Codes and Descriptions for MHV
Code
Parameters
Description
01
All
Primary Monitoring System (and Primary Bypass (PB))
02
All
Redundant Backup or Regular Non-Redundant Backup Monitoring System
03
All
Approved Alternative Monitoring System
04
All
Reference Method Backup System
05
S02C
Preapproved Parametric Monitoring Method Data for Controlled Units
06
All
Average Hour Before/Hour After
07
All
Initial Missing Data (ง75.31)
08
C02C
NOXC
S02C
FLOW
90th Percentile Value in Lookback Period (S02C and C02C)
or
90th Percentile Value in Lookback Period in Corresponding Load Bin (NOXC and FLOW)
H20
90th or 10th Percentile Value in Lookback Period
02C
10th Percentile Value in Lookback Period
09
C02C
NOXC
S02C
FLOW
95th Percentile Value in Lookback Period (S02C and C02C)
or
95th Percentile Value in Lookback Period in the Corresponding Load Bin (NOXC and
FLOW)
H20
95th or 5th Percentile Value in Lookback Period
02C
5th Percentile Value in Lookback Period
10
All
Maximum (or Minimum for O2 or H2O, if applicable) Hourly Value in Lookback Period
(S02C, C02C, 02C, and H20)
or
Maximum Value in Lookback Period in Corresponding Load Bin (NOXC and FLOW)
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Code
Parameters
Description
11
NOXC
FLOW
Average Hourly Value in Load Range in Lookback Period
12
All
Maximum (or Minimum for O2 or H2O, if applicable) Potential Concentration (MPC) or
Flow Rate (see Section 2.1 of Appendix A to Part 75)
13
S02C
NOXC
Maximum Expected Concentration (MEC) (see ง75.34(a)(5))
15
S02C
NOXC
1.25 times the maximum hourly controlled concentration at the corresponding load or
operation bin, in the applicable lookback period (see ง75.34(a)(5))
16
S02C
SO2 Concentration Value of 2.0 ppm during hours when very low sulfur fuels are
combusted. These hours are included in missing data lookback and are treated as available
hours for percent availability calculation.
17
C02C
NOXC
02C
S02C
Temporary Like-Kind Replacement Analyzer
18
NOXC
S02C
Maximum Potential Concentration (MPC) used to determine the hourly average for the
portion of the hour when a high range monitor was unavailable due to an expired linearity
or daily calibration error test (See Policy Question 9.20)
19
NOXC
S02C
200 percent of MPC; Default High Range Value. These hours are included in missing data
lookback and are treated as available hours for percent availability calculations.
20
C02C
NOXC
02C
S02C
FLOW
200 percent of the full-scale range setting (or diluent cap for O2) when there is full-scale
exceedance of high range. These hours are included in missing data lookback and are
treated as available hours for percent availability calculations.
21
C02C
H20
NOXC
S02C
Negative Hourly Average Concentration Replaced with Zero
22
NOXC
S02C
Concentration from a certified monitor at the control device inlet, when exhaust gases are
routed through an unmonitored bypass stack, or when the outlet monitor is unavailable
and proper operation of the emission controls is not verified. These hours are included in
missing data lookback and are treated as available hours for percent availability
calculations.
23
NOXC
S02C
C02C
MPC when flue gases are routed through an unmonitored bypass stack. These hours are
considered to be missing data hours.
24
NOXC
MEC of NOx when flue gases are routed through an unmonitored bypass stack and the
add-on NOx emission controls are confirmed to be operating properly.
46
C02C
NOXC
02C
FLOW
Missing data hour on a NOXR system where the NOx concentration or diluent
concentration is missing for an hour, missing data hour for O2 components only used to
determine derived CO2 concentration or derived H20 values, or missing data hour for
CO2, O2, or FLOW components only used to determine MATS emission rates.
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2.5.1 Monitor Hourly Value Data
Code
Parameters
Description
47
C02C
NOXC
02C
NOx concentration and diluent concentration available, but not used to determine NOx
emission rate. Note: Applicable only to combined-cycle turbines with primary and
primary bypass NOx-diluent systems designated under a single monitoring location and
operating in the same hour. (See Policy Manual Question 16.5)
48
C02C
NOXC
02C
Missing data hour on a NOXR system where the NOx concentration or diluent
concentration is missing for an hour. Note: Applicable only to combined-cycle turbines
with primary and primary bypass NOx-diluent systems designated under a single
monitoring location and operating in the same hour. (See Policy Manual Question 16.5)
53
All
Other quality-assured methodologies approved through petition. These hours are included
in the missing data lookback and are treated as available hours for percent monitor
availability calculations.
54
All
Other quality-assured methodologies approved through petition by EPA. These hours are
included in missing data lookback and are treated as available hours for percent
availability calculations.
55
All
Other substitute data approved through petition by EPA. These hours are not included in
missing data lookback and are treated as unavailable hours for percent availability
calculations.
SO? Concentration
When very low sulfur fuel is combusted, if a negative SO2 concentration is replaced (in the
Unadjusted Hourly Value field) with a value of zero ppm and the 2.0 ppm default SO2
concentration is reported in the Adjusted Hourly Value field, report MODC "16," rather than
"21" for that hour.
NOv Concentration
Note that MODCs "06" through "12," "23," "24," and "55" apply only when a separately
certified NOXC monitoring system is defined in the monitoring plan and is used to calculate
NOx mass, and do not apply when only aNOx-diluent monitoring system is defined.
MODC "46" only applies to monitoring locations with only aNOx-diluent system.
MODC "47" and "48" only apply to combined-cycle turbines with primary and primary bypass
NOx-diluent monitoring systems designated under a single monitoring location and operating in
the same hour.
CO? Concentration
MODCs "06" through "12" apply only when a CO2 monitor is used for heat input rate or CO2-
mass determinations.
MODC "46" applies to CO2 monitors that are only used to calculate NOx emission rates or
MATS emission rates.
MODC "47" and "48" only apply to combined-cycle turbines with primary and primary bypass
NOx-diluent monitoring systems designated under a single monitoring location and operating in
the same hour.
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2.5.1 Monitor Hourly Value Data
O? Concentration
MODCs "06" through "12" apply only when a separately certified O2 monitoring system is
defined in the monitoring plan and is used exclusively for heat input rate determinations in
accordance with Equation F-17 orF-18in Appendix F to Part 75.
MODC "46" applies to O2 monitors that are only used to calculate NOx emission rate, O2
monitors used only to determine derived CO2 concentration or hourly moisture, or O2 monitors
only used to determine MATS emission rates.
MODC "47" and "48" only apply to combined-cycle turbines with primary and primary bypass
NOx-diluent monitoring systems designated under a single monitoring location and operating in
the same hour.
Monitoring System ID (MonitoringSystemID)
Note that hours in which the flue gases are discharged through an unmonitored bypass stack are
considered to be missing data hours.
For quality-assured data hours, report the ID of the monitoring system from which the
concentration or stack flow was recorded, as follows: (Refer to Tables 10-16 for specific
situations other than quality-assured data hours that may require the reporting of monitoring
system IDs). If the unit has more than one system for a parameter (i.e., a primary and a backup),
report the ID of the primary system. In cases where a bypass stack is represented by a system,
report the ID of the appropriate system to which the missing data hour should be attributed.
SO? Concentration
For quality-assured data hours, report the ID of the Monitoring System from which the
concentration value was recorded. Also, report the SO2 concentration Monitoring System ID for
the monitoring system in use at the time of any of the following occurrences: (1) when you
report the 2.0 ppm default value for an hour during which very low sulfur fuel (as defined in
ง72.2) is combusted and the bias-adjusted hourly average SO2 concentration is below 2.0 ppm;
or (2) when you use a default high range value of 200 percent of the MPC in the calculation of
the hourly average SO2 concentration; or (3) when a full-scale exceedance of the high range
occurs and you use a value of 200 percent of the range in the calculation of the hourly average
SO2 concentration. In these cases, the hours are treated as quality-assured monitor operating
hours. Each of these occurrences is included in missing data lookback and is counted as an
available hour for percent monitor data availability calculations.
If a like-kind replacement non-redundant backup analyzer is used during a period of maintenance
or repair of the primary analyzer (see ง75.20(d)), report the primary Monitoring System ID.
Volumetric Flow
If a full-scale exceedance occurs and you use a value of 200 percent of the range in the
calculation of the hourly average flow rate, report the Monitoring System ID of the monitoring
system which is in use at the time of the occurrence. Treat such hours as though they are quality-
assured monitor operating hours for Part 75 purposes; include them in missing data lookback and
count them as available hours for percent monitor data availability calculations.
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NOv Concentration
If the NOx analyzer is only part of a NOx emission rate system and not part of any NOx
concentration system, leave this field blank.
Otherwise, report the System ID for the NOx concentration system.
When reporting a default high range value of 200 percent of the MPC or when reporting a value
of 200 percent of the range during a full-scale exceedance of the high range, report the System
ID of the monitoring system in use at the time of the occurrence of the full-scale exceedance.
If a like-kind replacement non-redundant backup analyzer is used during a period of maintenance
or repair of the primary analyzer (see ง75.20(d)), report the primary Monitoring System ID.
CO? Concentration
If the CO2 analyzer is only part of a NOx emission rate system, leave the System ID blank.
Otherwise, report the applicable System ID for the CO2 monitoring system defined in the
monitoring plan.
Report the Monitoring System ID of the monitoring system in use whenever a full-scale
exceedance value of 200 percent of the range is used in the calculation of the hourly average CO2
concentration. Treat such hours as though they are quality-assured monitor operating hours for
Part 75 purposes; include them in missing data lookback and count them as available hours for
percent monitor data availability calculations.
If a like-kind replacement non-redundant backup analyzer is used during periods of maintenance
and repair of the primary analyzer (see ง75.20(d)), report the primary Monitoring System ID.
O? Concentration
If the O2 analyzer is only part of a NOx emission rate system (and/or an H2O system), leave the
System ID blank and use only component IDs to identify the origin of the O2 concentration
values. Otherwise, report the applicable System ID as follows:
a) If the O2 concentration is from an O2 component of an O2 monitoring system (used to
determine hourly heat input rate), report the System ID for the O2 monitoring system.
(Note: the data will be QA'd by an O2 RATA.)
b) If the O2 concentration is from an O2 component that is part of a CO2 monitoring system
(used for determining CO2 concentration, CO2 mass, and hourly heat input rate), report
the System ID for the CO2 monitoring system. (Note: the data will be QA'd by a CO2
RATA.)
(Note that when either the wet or the dry O2 component is part of either an O2 or CO2 monitoring
system, that component will be reported using the applicable monitoring system as described in
(a) and (b) above.)
H2O Concentration
Report the H2O System ID for every hour.
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2.5.1 Monitor Hourly Value Data
Component ID (ComponentID)
For each hour of quality-assured data from a CEMS or from a stack gas flow rate system (except
for 2-component systems, as noted below), identify the component used during the hour. If the
component in use during the hour was a like-kind component, be sure to report the ID of the like-
kind component. Refer to Tables 10-16 for specific situations other than quality-assured data
hours that may require the reporting of monitoring component IDs. Note that hours in which the
flue gases are discharged through an unmonitored bypass stack are considered to be missing data
hours.
If a temporary like-kind replacement analyzer is used during periods of maintenance and repair
of the primary analyzer (see ง75.20(d)), assign and report a unique Component ID number
(beginning with the prefix "LK" as defined in the Component Data record, e.g., "LK1") for the
like-kind replacement analyzer. The like-kind replacement analyzer Component ID may be
manually entered. Note that the LK component must also be identified in the monitoring plan as
a monitoring component of the primary monitoring system, and a MODC of "17" must be
reported for each hour in which the analyzer provides valid data.
If you determine hourly stack flow rate by averaging (or subtracting) the readings from two flow
components which are identified as components of the same monitoring system, leave this field
blank. If the hourly flow rate is a substitute data value, leave this field blank. This includes hours
in which the flue gases are discharged through an unmonitored bypass stack.
Percent Available (PercentAvailable)
If applicable for the parameter, report the percent monitor data availability to one decimal place
for each hour.
SO? Concentration
For units with add-on SO2 emission controls:
a) If you report the MPC for hours in which the flue gases are routed through an
unmonitored bypass stack, or when the outlet SO2 monitor is unavailable and proper
operation of the emission controls is not verified, do not include these hours in the
calculation of percent monitor data availability. Treat these hours as missing data hours.
b) If you report data from a certified inlet monitor during hours in which the flue gases are
routed through an unmonitored bypass stack, or when the outlet SO2 monitor is
unavailable and proper operation of the emission controls is not verified, include these
hours in the missing data lookbacks and treat them as available hours in the PMA
calculations.
NQy Concentration
Report data in this field only if you use NOx concentration times stack flow as the primary
methodology for NOx mass calculations for all hours. Report the percent monitor data
availability for each hour.
CO? Concentration
Report percent monitor data availability for CO2 concentration only when the CO2 value is used
for determining CO2 mass rate or heat input rate.
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O? Concentration
Report percent monitor data availability for O2 concentration only when the O2 value is used for
determining heat input rate.
Moisture fFbO)
If you use the standard moisture missing data procedures in ง75.37, which are based on percent
availability, calculate and report the moisture percent data availability for each operating hour.
Moisture Basis (MoistureBasis)
Leave this field blank unless you use wet and dry O2 values to determine hourly moisture.
Since you are required to report separate hourly MHV records for each parameter (i.e., for wet
basis O2 and dry basis O2), report one of the following uppercase codes to indicate the moisture
basis of the hourly O2 reading.
Table 20: Moisture Basis Codes and Descriptions for MHV
Code
Description
D
Dry
W
Wet
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2.5.1.1 MATS Monitor Hourly Value Data
2.5.1.1 MATS Monitor Hourly Value Data
MATS Monitor Hourly Value Data, Overview
If your EGU is subject to the MATS Rule (40 CFR Part 63, Subpart UUUUU), use the MATS
Monitor Hourly Value Data (MMHV) record to report each parameter (i.e., hazardous air
pollutant (HAP)) that is measured by a continuous emission monitoring system (CEMS) or a
sorbent trap monitoring system. The monitored parameters that are required to be reported using
the ECMPS Client Tool may include Hg concentration, HC1 concentration, and/or HF
concentration. These instructions contain a subsection for each measured parameter, in order to
give specific direction on how to report for that parameter. Other parameters applicable to MATS
that are also required to be reported according to Part 75, such as SO2, CO2/O2 concentration, stack
gas flow rate, and moisture, are reported using the Monitor Hourly Value Data (MHV) record.
(Note: If you use the low-emitting EGU (LEE) methodology for Hg, you are not required to report
hourly Hg concentration data.)
Hg Concentration
If you measure the hourly average Hg concentration using a CEMS or sorbent trap monitoring
system, report a MMHV record for each hour of unit operation including hours when a quality-
assured Hg concentration value is not obtained.
There are no missing data substitution requirements or bias adjustment requirements for Hg
concentration in Appendix A of Subpart UUUUU.
HC1 and HF Concentration
If you measure the hourly average HC1 and/or HF concentration using CEMS, report a MMHV
record for each hour of unit operationincluding hours when a quality-assured HC1 or HF
concentration value is not obtained.
There are no missing data substitution requirements or bias adjustment requirements for HC1 or HF
concentration in 40 CFR 63, Subpart UUUUU, Appendix B.
The MMHV elements to be reported are summarized in Table 21, below:
Table 21: MMHV Elements for HGC, HCLC and HFC
MIVIH V Elements to Report
Measured
Unavailable
Parameter Code
V
V
Unadjusted Hourly Value
V
MODC
V
V
Monitoring System ID
V
V
Component ID
V
V
Percent Available
V
V
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2.5.1.1 MATS Monitor Hourly Value Data
MATS Monitor Hourly Value Data XML Model
Figure 12: MATS Monitor Hourly Value Data XML Elements
MATS Monitor Hourly Value Data XML Elements
Parameter Code (ParameterCode)
Report the Parameter Code that corresponds to the parameter monitored at the location defined by
the Stack Pipe ID or Unit ID. Use the appropriate uppercase code as shown in Table 22.
Table 22: Parameter Codes and Descriptions for the MMHVData Record
Code
Description
HGC
Hg Concentration (ug/scm)
HCLC
HC1 concentration (ppm)
HFC
HF concentration (ppm)
Unadjusted Hourly Value (UnadjustedHourlyValue)
Report the unadjusted concentration for the hour. See below for parameter-specific instructions.
Hg Concentration
Report the quality-assured, unadjusted Hg concentration for the hour (obtained with an Hg CEMS
or sorbent trap monitoring system, as applicable), expressed in |j,g/scm
stgnffieffflt#gซfes-using scientific notation. For example, "0.0144 |.ig/scm" should be reported as
"1.44E-2."_The "E" must be capitalized, and the field must not contain spaces in between the
characters. Report only one leading non-zero digit figwe-to the left of the decimal point, and one
digit after the decimal point. Do not use "plus" characters after the "E" when reporting
concentrations greater than or equal to one. For example, "1.44 |j,g/scm" should be reported as
"1.44E0." For sorbent trap monitoring systems, report the same Hg concentration value for each
hour of the sample collection period, except for "transition hours" (see "Specific Considerations,"
below). For data prior to September 9. 2020. report the Hg concentration in scientific notation
rounded to three significant figures. For example, if the concentration is 0 1 5^ ug/scm. report
I
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Leave this field blank when a quality-assured Hg concentration value is not available.
HC1 and HF Concentration
Report the quality assured, unadjusted HC1 or HF concentration for the hour (as applicable)
expressed in ppm^Feti tided to three sij^Tiif'iCtitit figures using scientific notation, as shown above for
Hg concentration. Leave this field blank when a quality-assured HC1 or HF concentration value is
not available. For data prior to September 9. 2020. report the HO ;oncentration in scientific
notation rounded to three significant figures. For example, if the concentration is 0.159 ug/scm.
report 1.59E-1.
MODC Code (MODCCode)
Report the appropriate method of determination code (MODC) to identify the type of monitoring
system or value used to measure and report the Hg, HC1, or HF concentration for the hour. For
CEMS, entry of MODCs "17" and "21" is permitted. For sorbenttrap monitoring systems, entry of
MODCs 01, 02, 32, 33, 34, 35, 41, 42, 43 and 44 is permitted. EPA has reserved codes "01"
through "55." Codes "56" through "99" may be used by vendors and companies for other purposes
but must not be reported in a quarterly report.
Table 23: MODC Codes and Descriptions for MMHV
Code
Parameters
Description
01
All
Primary Monitoring System
02
All
Redundant Backup or Regular Non-Redundant Backup Monitoring System
17
HGC, HCLC,
HFC
Temporary Like-Kind Replacement Analyzer (CEMS only)
21
HGC, HCLC,
HFC
Negative Hourly Average Concentration Replaced with Zero (CEMS only)
32
HGC
Hourly Hg concentration determined from analysis of a single sorbent trap
multiplied by a factor of 1.111
33
HGC
Hourly Hg concentration determined from the sorbent trap with the higher Hg
concentration (relative deviation criterion for the paired traps is not met)
34
HGC, HCLC,
HFC
Hourly Hg, HC1, or HF concentration missing or invalid
35
HGC, HCLC,
HFC
Hourly Hg, HC1, or HF concentration not monitored (flue gases routed through an
unmonitored bypass stack)
41
HGC
Hourly Hg concentration determined from two different pairs of sorbent traps
from the same system during the hour. This code applies only to routine sorbent
trap change outs during normal, day-to-day operation of the sorbent trap
monitoring system.
42
HGC
Hourly Hg concentration determined from two different pairs of sorbent traps
during the hour. This code applies only to sorbent trap change outs that occur
during RATA test periods.
43
HGC
Hourly Hg concentration reported as method detection level when the sorbent trap
concentration reading is below the method defined analytical detection level (see
63.10007(e)(1))
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Code
Parameters
Description
44
HGC
Hourly Hg concentration determined from analysis of a single sorbent trap which
reports the method detection level, multiplied by a factor of 1.111 in cases where
the other trap was accidentally lost, damaged, or broken and could not be analyzed
Hg. HC1. and HF Concentration
For an Hg, HC1, or HF CEMS or sorbent trap system, report all valid hourly concentration values
using a MODC of "01" (or "02" if using a backup system).
If the hourly concentration is unavailable or invalid, report MODC "34" in the MMHV record for
concentration and MODC "38" in the MDHV record for emission rate.
If the hourly concentration is below the method detection level, report the method detection level
as the measured emissions level and report a MODC of "43" for either trap with a concentration
below the method detection level. Report a MODC of "44" if one trap in a paired train meets the
criteria to report the method detection level and the second trap is accidentally lost, damaged, or
broken and could not be analyzed.
For sorbent trap monitoring systems, report the same MODC for each hour of the sample
collection period except for "transition" hours when sorbent traps are changed out and data from
more than one set of sorbent traps are used to calculate the Hg concentration. For routine trap
change outs during normal, day-to-day operation of the sorbent trap monitoring system, report an
MODC of "41" to indicate quality assured data hours during trap change out. For trap change outs
that occur during RATA test periods, report an MODC of "42" to indicate quality assured data
hours during RATA testing.
Monitoring System ID (MonitoringSystemID)
For quality-assured data hours, report the ID of the monitoring system from which the Hg, HC1, or
HF concentration value was determined.
If a temporary like-kind replacement analyzer is used during a period of maintenance or repair of
the primary Hg, HC1, or HF analyzer, report the primary monitoring system ID for each hour of
quality-assured data obtained with the replacement analyzer.
Component ID (ComponentID)
For each hour of quality-assured data from an Hg, HC1, or HF CEMS, identify the component used
during the hour. For sorbent trap monitoring systems, leave this field blank for all operating hours.
Note that hours in which the flue gases are discharged through an unmonitored bypass stack are
considered to be data unavailable hours.
If a temporary like-kind replacement analyzer is used during periods of maintenance and repair of
the primary analyzer, assign and report a unique Component ID number (beginning with the prefix
"LK" as defined in the Component Data record, e.g., "LK1") for the like-kind replacement
analyzer (see section 2.2.3 of Appendix A and section 2.2 of Appendix B to Subpart UUUUU).
The like-kind replacement analyzer Component ID may be manually entered. Note that the LK
component must also be identified in the monitoring plan as a monitoring component of the
primary monitoring system, and a MODC of "17" must be reported for each hour in which the
analyzer provides valid data.
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Percent Available (Per cent Available)
You must calculate and report the percent monitor data availability (PMA) for Hg, HC1, or HF
concentration (as applicable) according to ง75.32, for both Hg CEMS and sorbent trap monitoring
systems (see Subpart UUUUU, Appendix A, sections 7.1.3.5, 7.1.4.8, and 7.2.5.3.3 and Appendix
B, section 10.1.3.5). Hours with reported MODC values of 32 or 33 are "data available" hours for
Hg concentration. Hours with reported MODC values of 34 and 35 are "data unavailable" hours.
Specific Considerations
Sorbent Trap Systems
Report the sorbent trap results for each operating hour during the collection period
(including hours during which sampling occurred during any portion of the hour). If more
than one set of traps are used during an hour, EPA recommends that you report the average
concentration (straight average or time weighted) for all traps used during that hour. Do not
average concentrations from traps from two separate systems.
The installation of a sorbent trap system nullifies the option to report a non-operating file
during the quarter in which the trap was installed.
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2.5.2. Derived Hourly Data
2.5.2 Derived Hourly Value Data
Derived Hourly Value Data, Overview
Submit a Derived Hourly Value Data (DHV) record for each overall parameter value
determined at this monitoring location for each operating hour (or partial hour). This includes
emissions values calculated from continuous emissions monitoring (CEM) data, as well as the
overall NOx emission rate determined using Appendix E, the overall mass emission rates and heat
input rate determined using Appendix D and Appendix G, and the hourly value for each parameter
determined using the low mass emissions (LME) provisions. For hours in which the unit or stack
did not operate, do not report this record. Derived emissions values include SO2 mass (lb) or mass
rate (lb/hr), NOx emission rate, NOx mass or mass rate, calculated H2O concentration, calculated
CO2 concentration, Heat Input or Heat Input rate, and CO2 mass or mass rate values. Reporting
instructions for each of the derived parameters are described in detail below.
For CEM Methods
Derived Hourly Heat Input Rate fmmBtu/hr)
For each unit or stack with a stack flow monitor and diluent monitor, report the calculated heat
input rate in the AdjustedHourly Value element of a DHV record. If you monitor heat input rate
and report this record at a common stack, also apportion the heat input rate measured at the
common stack to the individual units (i.e., report additional DHV records for heat input rate under
the associated Unit IDs). If you monitor heat input rate and report this record at multiple stacks,
also report the heat input rate for the unit in an additional DHV record.
Derived SO? Hourly Mass Emission Rate (lb/hr)
For each unit or stack with an SO2 CEMS (or using the F23 methodology per ง75.11(e)(1)), report
the calculated SO2 mass emission rate in the AdjustedHourly Value element of a DHV record.
If you monitor SO2 mass emission rate and report this record at a common stack, do not apportion
the SO2 mass emission rate measured at the common stack to the individual units (i.e., do not
report any additional DHV records under the associate Unit IDs).
If, for a particular unit, you monitor SO2 mass emission rate at multiple stacks (or ducts), do not
report the combined SO2 mass emission rate for the unit (i.e., do not report any unit-level DHV
records).
Derived NCK Hourly Emission Rate db/mmBtu)
For each unit or stack with a NOx emission rate CEMS, report the calculated NOx emission rate in
the UnadjustedHourlyValue element and the bias-adjusted emission rate in the
AdjustedHourly Value element of a DHV record. If you monitor NOx emission rate and report this
record at a common stack, do not apportion the NOx emission rate measured at the common stack
to the individual units (i.e., do not report any additional DHV records under the associated Unit
IDs).
If, for a particular unit, you monitor NOx emission rate at multiple stacks (or ducts), calculate the
heat-input weighted hourly emission rate for the unit, but do not report those hourly unit level
values (i.e., do not report any unit-level DHV records for NOx emission rate). Rather, only use
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2.5.2. Derived Hourly Data
them to calculate the quarterly and cumulative NOx emission rates for the unit. Report these
quarterly and cumulative values in the unit-level Summary Value Data record.
For a combined-cycle turbine that uses a multiple-stack configuration, report separate stack-level
DHV records for each hour in which there is both main stack and bypass stack operating time.
Then, calculate a time-weighted unit-level NOx emission rate for each hour, as described in the
Summary Value Data record instructions. Store, but do not report, these time-weighted, hourly
unit-level emission rates. Rather, only use them to calculate the quarterly and cumulative unit-level
NOx emission rates.
For Derived NCK Mass Emission Rate db/hr)
For each unit, stack, or pipe at which NOx mass emissions are measured or estimated, submit a
DHV record, for every hour in the reporting period that the unit or stack operates.
If you monitor NOx mass emissions and report this record at a common stack, do not apportion the
NOx mass emissions measured at the common stack to the individual units (i.e., do not report any
additional DHV records under the associated Unit IDs).
If, for a particular unit, NOx mass emissions is monitored at multiple stacks (or ducts), do not
report the combined hourly NOx mass emissions for the unit (i.e., do not report any unit-level DHV
records for NOx mass rate).
Derived CO? Mass Emission Rate ftons/hr)
For any operating hour (or partial hour) for each unit, stack, or pipe at which CO2 emissions are
monitored using CEMS, including the use of O2 CEMS, report CO2 mass emission rate in a DHV
record.
If you monitor CO2 mass emission rate and report this record at a common stack, do not apportion
the CO2 mass emission rate measured at the common stack to the individual units (i.e., do not
report any additional DHV records under the associated unit IDs).
If, for a particular unit, CO2 mass emission rate is monitored at multiple stacks (or ducts), do not
report the combined CO2 mass emission rate for the unit (i.e., do not report any unit-level DHV
records).
Derived CO? Concentration
For any operating hour (or partial hour) for each unit or stack at which CO2 concentration is
determined by calculating it from O2 readings, report the derived CO2 concentration value for each
operating hour or partial operating hour in this record. Note that measured CO2 concentration from
a CO2 system utilizing a CO2 monitor should be recorded in the Monitor Hourly Value Data
(MHV) record.
Derived H?Q (Moisture^) Value
For any operating hour (or partial hour) for each unit or stack at which moisture is determined by
calculating it from wet and dry O2 readings, report the derived moisture value for each operating
hour or partial operating hour in this record.
Note that measured H2O values from a moisture sensor or a temperature sensor and look-up table,
if reporting for saturated gas streams, should be reported in the MHV record.
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2.5.2. Derived Hourly Data
If you use a fuel-specific default moisture value, as allowed under ง75.11 or ง75.12 (for coal and
wood-burning units and natural gas-fired boilers) and you have just one default value defined in
your monitoring plan, do not report a MHV record or a DHV record on an hourly basis. However,
if you have more than one active fuel-specific default moisture value defined in your monitoring
plan, report the fuel-specific or pro-rated moisture value used in your emissions calculations in an
H2O Derived Hourly Value Data record with a Method of Determination Code (MODC) of
"40" on an hourly basis.
Appendix D Methods
Heat Input
If you use Appendix D fuel flowmetering to determine heat input, report the heat input rate
calculated for each fuel in the appropriate Hourly Parameter Fuel Flow Data records. In
addition, report the total heat input rate for the hour in a DHV record for the location. (You must
report this record even if only one fuel was combusted during the hour.) If the fuel flowmetering is
at a common pipe, also report the apportioned hourly heat input rate in a DHV record for each unit
that is part of the common pipe.
SO?
If you use Appendix D fuel flowmetering to determine SO2, report the SO2 mass emission rate
calculated for each fuel in the appropriate Hourly Parameter Fuel Flow Data record. In
addition, report the total SO2 mass emission rate for the hour in a DHV record for the location.
(You must report this record even if only one fuel was combusted during the hour.) If the fuel
flowmetering is at a common pipe, do not report hourly apportioned SO2 for the units.
Appendix G Method for Hourly CO2
If you use Equation G-4 to determine hourly CO2, report the CO2 mass emission rate calculated for
each fuel in the appropriate Hourly Parameter Fuel Flow Data record. In addition, report the
total CO2 mass emission rate for the hour in a DHV record. (You must report this record even if
only one fuel was combusted during the hour.)
Appendix E Method for Hourly NOx Emission Rate
If you use Appendix E to determine NOx emission rate, report the overall NOx emission rate for
the hour in a DHV record. If you burn a single, consistent blend of fuels and established a single
Appendix E curve for that fuel blend, report all the Appendix E related information in this DHV
record. If you established a separate Appendix E curve for each fuel, report the fuel-specific NOx
emission rate data in the appropriate Hourly Parameter Fuel Flow Data record and in
addition, report the overall NOx emission rate for the hour in a DHV record. (You must report this
record even if only one fuel was combusted during the hour.)
Hourly NOx Mass Rate Based on Appendix D Heat Input Rate
If you are required to report NOx mass rate, calculate this value from the heat input rate and NOx
emission rate reported in the DHV record and report it in a DHV record.
LME Methods
For each parameter reported using the LME method, report a DHV record for each operating hour.
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2.5.2. Derived Hourly Data
Derived Hourly Value Data, XML Model
Figure 13: Derived Hourly Value Data XML Elements
DerfvecWou rlyValue Data Sh~E)eH
' ParameterCocte
0
Adj u stedHou rtyVaiue
MOQCCwie
Perce-ntAv
OperatingCondttionCode
FueiCoete
Derived Hourly Value Data XML Elements
Parameter Code (ParameterCode)
Report the appropriate Parameter Code as shown in Table 24.
Table 24: Parameter Codes and Descriptions for the DHVData Record
Code
Description
C02
CO2 Hourly Mass Emission Rate (tons/hr)
C02C
CO2 Concentration (derived from O2 measurements) (%C02)
C02M
CO2 Hourly Mass (tons) (LME)
H20
Moisture (from wet/dry O2 measurements) (%H20)
HI
Heat Input Rate (mmBtu/hr)
HIT
Heat Input Total (mmBtu) (LME)
NOX
NOx Hourly Mass Emission Rate (lb/hr)
NOXM
NOx Hourly Mass (lb) (LME)
NOXR
NOx Emissions Rate (lb/mmBtu)
S02
SO2 Hourly Mass Rate (lb/hr)
S02M
S02 Hourly Mass (lb) (LME)
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Unadjusted Hourly Value (UnadjustedHourlyValue)
Report the unadjusted derived hourly value for the parameter specified, as follows:
NOv Emission Rate from CEM
Calculate and report the NOx emission rate (lb/mmBtu) based on the unadjusted NOx concentration
and unadjusted diluent (CO2 or O2) concentration recorded in the MHV record. Report the
resulting value to the appropriate number of decimal places in Table 25. For hours in which you
use missing data procedures leave this field blank, including hours in which the flue gases are
discharged through an unmonitored bypass stack.
If you use Equation 19-3 or 19-5 to determine NOx emission rate, you must use modified Equation
19-3D or 19-5D (as applicable) instead of Equation 19-3 or 19-5, for hours in which you use the
diluent cap (see Table 29 in the Monitoring Formula Data record in the Monitoring Plan
Reporting Instructions).
All Other Parameters
Leave this field blank.
Adjusted Hourly Value (AdjustedHourlyValue)
Report the adjusted or "final" derived hourly value for the parameter specified.
SO? Mass Emission Rate flb/hr)
For CEM methods, this value is normally derived using the bias-adjusted stack flow and the bias-
adjusted SO2 concentration (each reported in the MHV record), in conjunction with the appropriate
equation in Appendix F to Part 75. However, for an hour in which a very low sulfur fuel (see
ง72.2) is combusted, the value may be calculated from a CEMS-derived heat input rate (i.e., from
monitored stack flow rate, and diluent (CO2 or O2) concentration) and a default SO2 emission rate
using Equation F-23 (see ง75.11(e)(1)).
For Appendix D units and pipes, report the total SO2 mass emission rate for the location in this
field. Use formula D-12 to combine SO2 mass emission rates from multiple fuels (as reported in
Hourly Parameter Fuel Flow).
Report all data for this element in lb/hr and to the appropriate number of decimal places per Table
25.
NOv Mass Emission Rate (lb/hr)
If you use NOx concentration times stack flow rate to determine NOx mass emissions, use the bias-
adjusted stack flow and the bias-adjusted NOx concentration, (each reported in the MHV record),
in conjunction with the appropriate equation in Appendix F to Part 75. If instead, NOx mass
emissions are calculated from the NOx emission rate times heat input rate, use the adjusted NOx
emission rate and adjusted heat input values as reported in the DHV record for each parameter.
Report data for this element in lb/hr and to the appropriate number of decimal places per Table 25.
NOv Emission Rate (lb/mmBtu)
CEM Systems
For each hour in which you report NOx emission rate in the UnadjustedHourlyValue element,
apply the appropriate adjustment factor (1.000 or bias adjustment factor (BAF)) to the rounded
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average NOx emission rate and report the adjusted NOx emission rate for the hour. Report the
resulting value to the appropriate number of decimal places per Table 25. Report the appropriate
substitute data value for NOx emission rate for each hour that a quality-assured emission rate is not
obtained, including hours in which the flue gases are discharged through an unmonitored bypass
stack. Do not leave this field blank.
Note that for an initial certification, analyzer replacement, or complete monitoring system
replacement (as indicated by reporting a QA Certification Event record with an Event Code of
100, 101, 120, 125, 151, 250, 255, 300 or 305), if you are using conditional data validation, the
BAF is uncertain during the conditional data period. Therefore, apply a BAF of 1.000 from the
beginning of the conditional data validation period to the completion hour of the certification or
recertification RATA. For any other events that require a RATA, apply the BAF from their
previous RATA during the conditional data period, unless that RATA failed or was aborted, in
which case use 1.000.
For a combined-cycle combustion turbine (CT) using a multiple-stack configuration to report NOx
emission rate, use missing data substitution for any transition hour (i.e., an hour during which
gases flow through both stacks), if either the main stack or bypass monitoring system is out of
service, and draw the appropriate substitute data value from the bypass stack data pool.
If a full-scale exceedance of the low NOx range occurs and you use a default high range value of
200 percent of the MPC in the calculation of the hourly average NOx concentration reported in the
MHV record, or if a full-scale exceedance of the high NOx range occurs and you use a value of 200
percent of the range in the calculation of the hourly average NOx concentration reported in the
MHV record, use the reported NOx concentration in conjunction with the quality-assured diluent
concentration for the hour to calculate and report the NOx emission rate. These hours are treated as
quality-assured monitor operating hours; they are included in missing data lookback and are
treated as available hours for percent monitor data availability calculations.
If a diluent concentration is unavailable during an hour in which a full scale exceedance of the NOx
analyzer occurs or an hour in which the default high range value is used, the NOx emission rate for
the hour is considered to be missing. In that case, do not report Monitor Hourly Value for NOx
concentration for this hour since the NOx emission rate cannot be calculated; instead, report the
maximum potential NOx emission rate (MER) in this field, and use an MODC of "25."
Appendix E Systems
Report the overall NOx emission rate for the unit to the appropriate number of decimal places per
Table 25. If this value was determined from a consistent fuel mix curve, also report the appropriate
System ID for the Appendix E NOx system. If a single fuel curve or curves were defined, report
the fuel-specific NOx emission rate in the appropriate Parameter Fuel Flow Data record(s), and
report the combined NOx emission rate for the unit in this record.
CO? Concentration (Derived from O? Concentration') fpct)
Report the CO2 Concentration for the hour to the appropriate number of decimal places per Table
25. This is either the value calculated from a quality-assured O2 concentration value (as reported in
the MHV record), or the appropriate substitute data value, as specified in ง75.35.
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CO? Mass Emission Rate (tons/hr)
If you are using CEMS, this value is derived using the bias-adjusted stack flow and either the
unadjusted CO2 concentration reported in the MHV record (if you are using a CO2 analyzer), or the
CO2 Concentration reported in the DHV record (if you are using an O2 analyzer), in conjunction
with the appropriate equation in Appendix F to Part 75.
For units using Appendix G, calculate and report, in Parameter Fuel Flow Data record(s), the
CO2 mass emissions (tons/hr) for each fuel separately using Equation G-4. Then use Equation G-
4A (see Table 32, Monitoring Formula Data record in the Monitoring Plan Reporting
Instructions) to determine the combined CO2 mass emission rate for the hour. Report the combined
hourly CO2 mass emission rate (tons/hr) in this field in the DHV record.
Report this element in tons per hour and to the appropriate number of decimal places per Table 25.
H2O (Moisture^) (pet)
Report moisture for the hour, expressed in "/oFhO, rounded to one decimal place. Report the
appropriate substitute data value for hours in which a quality-assured moisture percentage is
unavailable or for hours in which the flue gases are discharged through an unmonitored bypass
stack.
Heat Input (HO Rate (mmBtu/hr)
Report this value in mmBtu per hour (mmBtu/hr) and to the appropriate number of decimal places
per Table 25. If you use CEMS to determine hourly heat input rate, calculate the hourly rate using
the diluent gas concentration, bias-adjusted hourly stack flow rate, percent moisture (if
appropriate), and F-factor.
If you measure and report heat input rate at a common stack or pipe, also apportion and report heat
input rate at the unit level. This apportionment should be based on megawatts, steam load, or fuel
flow rate, using Equation F-21 A, F-21B, or F-21D in Appendix F to Part 75, as applicable. These
formulas use time-weighted hourly load to apportion the heat input rate measured at a common
stack to the individual units.
For each hour, the sum of the individual heat inputs in mmBtu (i.e., the sum of the individual unit
heat input rates, each multiplied by the corresponding unit operating time) must equal the total
common stack heat input in mmBtu (i.e., the common stack heat input rate multiplied by the
common stack operating time).
For a unit with a multiple stack configuration, with flow rate and diluent monitors on each stack,
calculate the hourly heat input rate for the unit using Equation F-21C in Appendix F to Part 75.
Also use Equation F-21C for multiple pipe configurations.
For each hour, the total unit heat input in mmBtu (i.e., the unit heat input rate multiplied by the
unit operating time) must equal the sum of the individual stack (or pipe) heat inputs in mmBtu
(i.e., the sum of the individual stack (or pipe) heat input rates, each multiplied by the
corresponding stack (or pipe) operating time).
For Appendix D units combusting multiple fuels, report the hourly heat input rate calculated from
all fuels in the DHV record. Report this record even if only one fuel was combusted during the
hour.
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For non-Acid Rain NOx Budget Program units that use NOx concentration times stack flow as the
primary methodology to calculate NOx mass emissions, report the hourly heat input rate unless you
are specifically exempted (e.g., by a State SIP) from reporting it for allocation purposes. However,
you must report unit operating time and load (except for non load-based units) for each hour in the
Hourly Operating Data record, even if you are not required to report hourly heat input.
If, for any operating hour, the heat input rate is calculated to be less than one mmBtu/hr, substitute
for that hour a value of one mmBtu/hr. Use an MODC of "26" for any such hours. This applies
only to monitoring locations where CEMS are installed (i.e., where HI Rate is calculated using
equation F-15, F-16, F-17, or F-18.) This does not apply to HI Rate calculated through Appendix
D or apportionment.
In the rare event no units attached to the common stack generated load (Load = 0) during the hour,
heat input should be apportioned by operating time.
Total Heat Input (HIT') OnmBtu)
Report this value in mmBtu for LME units and to the appropriate number of decimal places per
Table 25.
LME Units
Report the value for each required parameter as total mass (or heat input) for the hour. Report each
value to the appropriate number of decimal places per Table 25.
Table 25: Precision of Reported Values for Derived Hourly Value Data
Parameter Codes
Required Precision
C02, C02C, C02M, H20, HI, HIT, NOX,
NOXM, S02M
One decimal place
S02
For CEM and Appendix D
burning only oil during hour
One decimal place
S02
Appendix D burning any gas
during hour
Four decimal places
NOXR
Three decimal places
MODC Code (MODCCode)
For CEM methods for parameters C02C, NOXR or H20, report one of the following MODCs as
shown in Table 26 to identify the monitoring system or missing data procedure used to report the
derived value or when you were directed to report it for an approved alternative monitoring
system. For parameter HI, use an MODC of "26" when the calculated Heat Input Rate is zero or
negative and was therefore replaced with a value of 1.0. Report an MODC of "40" for parameter
H20 when a fuel-specific or pro-rated default value is used in determining the derived value.
For all other parameters, leave this field blank.
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NOv Hourly Emission Rate
Report an MODC of "14" when the diluent cap value for CO2 or O2 is used in place of the
measured value reported in the MHV records. Also, be sure that you register the appropriate
diluent cap value for the unit in the Monitoring Default Data record in the monitoring plan. A
diluent cap value can only be used for calculating NOx emission rate during operating hours for
which a quality-assured measured diluent (CO2 or O2) value is obtained.
For full-scale exceedances of a NOx analyzer, EPA requires reporting of an MODC reflecting the
monitoring system in use during the exceedance, or reporting an MODC of "25" if the diluent
concentration normally reported in the MHV records is not quality-assured. Therefore, during full-
scale exceedances, when 200 percent of MPC or 200 percent of range is reported for NOx
concentration in the MHV record and is used in conjunction with a quality-assured diluent gas
concentration to calculate the NOx emission rate, report the MODC code associated with the
monitoring system that is in use at the time of the full-scale exceedance (for example, report "01"
if the primary NOx-diluent monitoring system is in use). If a full-scale exceedance of the NOx
analyzer occurs and no quality-assured diluent gas concentration for the hour is available, report an
MODC of "25" for that hour. Manual entry of an MODC of "21" is permitted.
Table 26: MODC Codes and Descriptions for DHV
Code
Parameter(s)
Description
01
C02C, NOXR,
H20
Primary Monitoring System (and Primary Bypass (PB) for NOXR)
02
C02C, NOXR,
H20
Redundant Backup or Regular Non-Redundant Backup Monitoring System
03
All
Approved Part 75 Alternative Monitoring System
04
C02C, NOXR,
H20
Reference Method Backup System
05
NOXR
Part 75 Approved Parametric Method for Controlled Units
06
C02C, NOXR,
H20
Average Hour Before/Hour After
07
C02C, NOXR,
H20
Initial Missing Data (ง75.31)
08
C02C, NOXR
90th Percentile Value in Lookback Period (C02C)
or
90th Percentile Value in Lookback Period in Corresponding Load Bin (NOXR)
H20
90th or 10th Percentile Value in Load Range in Lookback Period
09
C02C, NOXR
95th Percentile Value in Lookback Period (C02C)
or
95th Percentile Value in Lookback Period in Corresponding Load Bin (NOXR)
H20
95th or 5th Percentile Value in Load Range in Lookback Period
10
C02C, NOXR
Maximum Hourly Value in Lookback Period (C02C)
or
Maximum Value in Lookback Period in Corresponding Load Bin (NOXR)
H20
Maximum or Minimum Hourly Moisture Percentage in Lookback Period
11
NOXR
Average Hourly Rate in Load Range in Lookback Period
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Code
Parameter(s)
Description
12
C02C, NOXR
Maximum Potential Concentration or Emission Rate
H20
Maximum or Minimum Potential Moisture Percentage
13
NOXR
Maximum Controlled NOx Emission Rate (MCR)
14
NOXR
Diluent Cap (if the cap is replacing a CO2 measurement, it should be 5.0
percent for boilers and 1.0 percent for turbines; if it is replacing an O2
measurement, it should be 14.0 percent for boilers and 19.0 percent for
turbines.)
15
NOXR
1.25 times the maximum controlled NOx Emission Rate at the corresponding
load or operational bin, in the applicable lookback
21
C02C, H20 NOXR
A negative hourly value replaced with a zero
22
NOXR
NOx Emission Rate calculated from a certified NOx monitor at the control
device inlet, when the outlet NOx monitor is unavailable and proper operation
of the emission controls is not verified. These hours are included in missing
data lookback and are treated as available hours for percent availability
calculations.
23
NOXR
Maximum Potential NOx Emission Rate (MER) for an hour in which flue
gases are discharged through an unmonitored bypass stack
24
NOXR
MCR for an hour in which flue gases are discharged downstream of the NOx
emission controls through an unmonitored bypass stack, and the add-on NOx
emission controls are confirmed to be operating properly
25
NOXR
MER. Use only when a NOx concentration full-scale exceedance occurs and
the diluent monitor is unavailable.
26
HI
One mmBtu/hr substituted for Heat Input Rate for an operating hour in which
the calculated Heat Input Rate is zero or negative
40
H20
Fuel-Specific or Pro-Rated moisture default value
45
HIT
Maximum Rated Hourly Heat Input Rate (used to determine heat input for
LME units generally using long-term fuel flow method)
53
All
Other quality-assured methodologies approved through petition. These hours
are included in the missing data lookback and are treated as available hours for
percent monitor availability calculations.
54
All
Other quality-assured methodologies approved through petition by EPA.
These hours are included in missing data lookback and are treated as available
hours for percent availability calculations.
55
All
Other substitute data approved through petition by EPA. These hours are not
included in missing data lookback and are treated as unavailable hours for
percent availability calculations.
* EPA has reserved MODCs "01" through "55." MODCs "56" through "99" may be used by vendors and
companies for other purposes; do not report these codes in a quarterly report. MODCs "30" and "31"
were defined in EDR v2.0 for Ozone Trading Commission (OTC) NBP units only and are no longer
allowed.
Monitoring System ID (MonitoringSystemID)
Report the Monitoring System ID for the appropriate monitoring system that is providing quality-
assured data for the hour. For missing data hours, report the Monitoring System ID for the
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2.5.2. Derived Hourly Data
appropriate monitoring system that is unable to provide quality assured data for the hour. For hours
in which the flue gases are discharged through an unmonitored bypass stack, leave this field blank.
Also, leave this field blank for the calculated SO2, NOx, and CO2 hourly mass emission rates.
If either: (1) a default high range NOx concentration value of 200 percent of the MPC is reported
due to a full-scale exceedance of the low range; or (2) a value of 200 percent of the range is
reported during a full-scale exceedance of the high range, report the ID number of the NOx-diluent
monitoring system which is in use at the time of the full-scale exceedance.
For heat input records, report the Monitoring System ID for the O2 or CO2 system that provided
the value used in the calculation. Table 27 below summarizes these requirements.
Table 27: System ID Reporting for Derived Hourly Values
Parameter Code
Description
System ID to Report
C02
CO2 Hourly Mass Rate
Leave blank
C02C
CO2 Concentration (from an O2
monitor)
CO2 System ID
H20
Moisture (from wet/dry H20
system)
H20 System ID
HI
Heat Input
CO2 or O2 System ID if CEM. Otherwise, leave
blank.
NOX
NOx Hourly Mass Rate from
NOx Concentration and Stack
Flow
Leave blank
NOx Hourly Mass Rate from
NOx Emissions Rate and Heat
Input
Leave blank
NOXR
NOx Emissions Rate
NOx System ID for CEM system or NOXE
System ID for Appendix E mixed-fuel curve.
Otherwise, leave blank.
S02
SO2 Hourly Mass Rate
Leave blank
Formula Identifier (Formulaldentifier)
Report the Formula ID from the Monitor Formula Data record that is used for the calculation
of the parameter. Leave this field blank for missing data hours (except for parameter codes C02C
(CO2 concentration determined from O2 readings), H2O (determined from wet and dry O2
readings), and NOXR) and for LME records. If you are using the Appendix D methodology to
determine SO2, CO2, or Heat Input and burning multiple fuels for the hour, report the Formula ID
from the Monitor Formula Data record with Formula Code D-12, G-4A, or D-15A
respectively. If burning a single fuel for the hour, leave this field blank. If using multiple Appendix
E curves to determine the NOx emission rate for the hour, report the Formula ID from the
Monitor Formula Data record with Formula Code E-2. If using a single curve for the hour,
leave this field blank.
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2.5.2. Derived Hourly Data
Percent Available (Per cent Available)
For NOXR from a CEM system, H20, or C02C, report the percent monitor data availability
(PMA) to one decimal place for all hours. Do not report PMA for Heat Input Rate, SO2, NOx, or
CO2 hourly mass emission rates.
Operating Condition Code (OperatingConditionCode)
This field applies only to Appendix E NOXR data, LME NOXM data. For an Appendix E NOx
emission rate record (for a unit using one correlation curve for a consistent fuel mixture), report the
appropriate code from Table 28 below to indicate the condition that was used to determine the NOx
emission rate for the hour.
See the instructions for this field in the Hourly Parameter Fuel Flow Data record for details
about when to report each operating condition code.
Table 28: Operating Condition Codes and Descriptions for DHV
Code
Description
B
Unit operated at base load or set point temperature (LME)
C
Controls Operating Properly (LME)
E
Emergency Fuel (Appendix E)
M
Correlation Curve for the Fuel Mixture has Expired (Appendix E)
N
Operating Parameter is Outside of Normal Limits (Appendix E)
P
Unit operated at peak load or higher internal operating temperature
(LME)
U
Uncontrolled Hour (Appendix E or LME)
W
Operation Above Highest Tested Heat Input Rate Point on the
Curve (Appendix E)
X
Operating Parameter Data Missing or Invalid (Appendix E)
Y
Designated Operational and Control Equipment Parameters within
Normal Limits (Appendix E)
Z
Operation Below Lowest Tested Heat Input Rate Point on the
Curve (Appendix E)
In the NOXM record for an LME unit that uses a fuel- and unit-specific default NOx emission rate
and has NOx controls, indicate the status of the NOx controls for the hour by reporting:
C = Controls Operating Properly
U = Unit Controls Not Operating or Not Operating Properly
In the NOXM record for an LME combustion turbine that operates principally at base load (or at a
set point temperature) but is capable of operating at a higher peak load (or higher internal
operating temperature), indicate for each operating hour whether operation was a base load (B) or
peak load (P).
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B = Unit operated at base load or set point temperature
P = Unit operated at peak load or higher internal operating temperature
For all other records, leave this field blank.
Segment Number (SegmentNumber)
For an Appendix E NOx Emission Rate record (for a unit using one correlation curve for a
consistent fuel mixture), report the Segment Number (1 - 4) indicating which portion of the
correlation curve was used to determine the value for the hour. For operating condition codes N or
X, report the segment number that contains the highest NOx emission rate on the curve for the fuel.
Leave this field blank if the correlation curve was not used for the hour (i.e., the Operating
Condition Code is E, M, U, or W).
Fuel Code (FuelCode)
For LME units, report the type of fuel combusted in the hour. If multiple fuels are burned, report
the fuel type used to determine the mass emissions for the parameter in this record (i.e., the fuel
with the highest emission factor for the parameter). If records are missing as to which fuel was
burned in the hour, report the fuel with the highest emission factor for this parameter of all of the
fuels capable of being burned in the unit.
Table 29: Fuel Codes and Descriptions
Code
Description
BFG
Blast Furnace Gas
BUT
Butane (if measured as a gas)
CDG
Coal-Derived Gas
COG
Coke Oven Gas
DGG
Digester Gas
DSL
Diesel Oil
LFG
Landfill Gas
LPG
Liquefied Petroleum Gas
NNG
Natural Gas (as defined in ง72.2)
OGS
Other Gas
OIL
Residual Oil
OOL
Other Oil
PDG
Producer Gas
PNG
Pipeline Natural Gas (as defined in ง72.2)
PRG
Process Gas
PRP
Propane (if measured as a gas)
RFG
Refinery Gas
SRG
Unrefined Sour Gas
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2.5.2.1 MATS Derived Hourly Data
2.5.2.1 MATS Derived Hourly Value Data
MATS Derived Hourly Value Da rview
If your EGU is subject to the MATS Rule (40 CFR Part 63, Subpart UUUUU), submit a MATS
Derived Hourly Value Data (MDHV) record for each calculated (derived) parameter value
determined at the monitoring location for each operating hour. MATS derived hourly values
include electrical output-based emission rates for SO2, Hg, HC1, or HF, and heat input-based
emission rates for SO2, Hg, HC1, or HF. Reporting instructions for each of the derived parameters
are presented below.
Derived SO2 Hourly Emission Rates
If you seek to comply with the acid gas emissions reduction requirements of the MATS rule by
continuously monitoring the heat input-based or electrical output-based SCh.emission rate as a
surrogate for HC1, you must calculate and report the hourly SO2 emission rate in the appropriate
units of measure (see Table 30) for each operating hour in which valid values are reported for the
unadjusted SO2 concentration and all of the auxiliary parameters that are needed to calculate the
SO2 emission rate.
For the electrical output-based emission rate, the auxiliary parameters needed to convert the SO2
concentration to lb/MWh include stack gas flow rate, gross electrical load, and (if applicable) stack
gas moisture content. For the heat input-based emission rate, the auxiliary parameters needed to
convert the SO2 concentration to lb/mmBtu include diluent gas (CO2 or O2) concentration and (if
applicable) stack gas moisture content.
Use only quality-assured, unadjusted hourly average SO2 concentrations, stack gas flow rates,
diluent gas concentrations, and (if applicable) moisture values to calculate the SO2 emission rates.
Do not calculate the hourly SO2 emission rate if Part 75 substitute data is used for any of the
auxiliary parameters. Also, do not calculate the electrical output-based emission rate if the
electrical load for the operating hour is missing. When the electrical load is zero, report the
"default electrical load" (as defined in ง63.10042). The default electrical load is not considered to
be substitute data.
For the purposes of the MATS rule, the hourly SO2 emission rate (lb/mmBtu or lb/MWh) must not
be calculated for any operating hour in which SO2 concentration exceeds the low range of a dual-
range SO2 monitor and the high range is unable to provide quality-assured data due to an expired
linearity check or an expired daily calibration error test. Whereas the Acid Rain Program and other
programs that use Part 75 to monitor SO2 mass emissions require a substitute data value
(specifically, the maximum potential SO2 concentration (MPC)) to be reported and used in the
emissions calculations for such hours, the MATS rule prohibits Part 75 substitute data values from
being used to calculate hourly pollutant emission rates. Note that default moisture percentages
from Part 75 (if used) are not considered to be substitute data values. If the diluent cap is used in
the calculation of the heat input-based emissions rate, the cap value is not considered to be
substitute data.
For operating hours in which quality-assured data are not obtained for either the unadjusted SO2
concentration or any essential auxiliary parameter(s), report a MDHV record, even though the SO2
emission rate is not calculated for those hours (see the reporting instructions below for the
"Unadjusted Hourly Value" field).
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2.5.2.1 MATS Derived Hourly Data
Derived Hourly Hg, HC1, or HF Emission Rates
If you seek to comply with the MATS rule by continuously monitoring the heat input-based or
electrical output-based Hg, HC1, or HF emission rate, you must calculate and report in a MDHV
record the hourly pollutant emission rate in the appropriate units of measure (as shown in Table
30) for any operating hour in which sufficient valid data are obtained for the unadjusted Hg, HC1,
or HF concentration, and for all other parameters needed to convert Hg, HC1, or HF concentration
to the units of the emission standard (see 40 CFR 60.13(h)(2)).
For the electrical output-based emission rate, the auxiliary parameters needed to convert the Hg,
HC1, or HF concentration to lb/GWh or lb/MWh (as applicable) include stack gas flow rate, gross
electrical load, and (if applicable) stack gas moisture content. For the heat input-based emission
rates, the auxiliary parameters needed to convert the Hg, HC1, or HF concentration to lb/TBtu or
lb/mmBtu (as applicable) include diluent gas (CO2 or O2) concentration and (if applicable) stack
gas moisture content.
Use only quality-assured, unadjusted hourly average Hg, HC1, and HF concentrations, stack gas
flow rates, diluent gas concentrations, and (if applicable) moisture values to calculate the Hg, HC1,
or HF emission rates. Do not calculate the hourly emission rate if Part 75 substitute data is used for
any of the auxiliary parameters. Also, do not calculate the electrical output-based emission rate if
the electrical load for the operating hour is missing. For startup or shutdown hours, if the electrical
load is zero, the output-based emission rate must be calculated using the "default electrical load"
(as defined in ง63.10042).
Note that default moisture percentages from Part 75 (if used) are not considered to be substitute
data values. If the diluent cap is used in the calculation of the heat input-based emissions rate, the
cap value is not considered to be substitute data.
For operating hours in which quality-assured data are not obtained for either the unadjusted
pollutant concentration (i.e., Hg, HC1, or HF, as applicable) or any essential auxiliary parameter(s),
report a MDHV record, even though the emission rate is not calculated for those hours (see the
reporting instructions below for the "Unadjusted Hourly Value" field).
MATS Derived Hourly Value Data XML Model
Figure 14: MATS Derived Hourly Value Data XML Elements
ParameterCode
MATSDe rivedHou rtyValue-Data (
" MODCCode
Form u latdentrfier
MATS Derived Hourly Value Data XML Elements
Parameter Code (ParameterCode)
Report the appropriate Parameter Code as shown in Table 30:
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2.5.2.1 MATS Derived Hourly Data
Table 30: Parameter Codes and Descriptions for the MDHVData Record
Code
Description
S02RE
Electrical Output-Based Hourly SO2 Emission Rate (lb/MWh)
S02RH
Heat Input-Based Hourly SO2 Emission Rate (lb/mmBtu)
HGRE
Hg Electrical Output Based Emissions Rate (lb/GWh)
HGRH
Hg Heat Input Based Emissions Rate (lb/TBtu)
HCLRE
HC1 Electrical Output Based Emissions Rate (lb/MWh)
HCLRH
HC1 Heat Input Based Emissions Rate (lb/mmBtu)
HFRE
HF Electrical Output Based Emissions Rate (lb/MWh)
HFRH
HF Heat Input Based Emissions Rate (lb/mmBtu)
Unadjusted Hourly Value (UnadjustedHourlyValue)
Report the unadjusted derived hourly value for the parameter specified, as follows:
SO? Emission Rates
If your EGU has a single unit-single stack exhaust configuration and you seek to comply with the
acid gas emissions reduction requirements of the MATS rule by continuously monitoring either the
heat input-based SO2 emission rate (lb/mmBtu) or the electrical output-based SO2 emission rate as
a surrogate for HC1, report the unadjusted SO2 emission rate in a MDHV record for each operating
hour in which quality-assured values are obtained and reported in MHV records for the unadjusted
SO2 concentration and for all of the auxiliary parameters needed to convert the SO2 concentration
to lb/mmBtu or lb/MWh (as applicable). For the calculation of electrical output-based emission
rates, use only unadjusted hourly SO2 concentrations and stack gas flow ratesdo not apply Part
75 bias adjustment factors to the SO2 or flow rate data. Report the SO2 emission rates tฉ4bfee
stgnffieffflt#gซfes-using scientific notation, keeping only one leading non-zero digit to the left of
the decimal point. For example, an SO2 emission rate of 0.0756 lb/mmBtu would be reported as
7.5-6E-2, with no spaces in between the characters. Do not use "plus" characters after the "E" when
reporting rates greater than or equal to one. For example, an SO2 emission rate of 7.56 lb/mmBtu
would be reported as 7.#6E0. For data prior to September 9. 2020. report the rate in scientific
notation rounded to three significant figures. For example, if the rate is 0 1;^ U- rriniBtu. report
I
Use appropriate equations from Table 28 of the ECMPS Monitoring Plan Reporting Instructions to
determine the hourly lb/mmBtu or lb/MWh SO2 emission rate. These equations must be defined in
your electronic monitoring plan.
If the SO2 concentration or any auxiliary parameter needed to calculate the SO2 emission rate is
either invalid or is a substitute data value, leave this field blank and report an MODC of "38."
If you seek to comply with the electrical output-based standard and the hourly electrical load is
zero during unit operation, and all other essential parameters are valid, calculate the emission rate
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using the default electrical load and report an MODC of "39." If the electrical load is missing
during unit operation, leave this field blank and report an MODC of "38."
If your affected EGU has a common stack or multiple stack exhaust configuration, see the
"Specific Considerations for the MATS Rule" presented at the end of this section.
Hg. HC1. or HF Emission Rates
If your EGU has a single unit-single stack exhaust configuration and you seek to comply with the
MATS rule by continuously monitoring either the heat input-based Hg, HC1, or HF emission rate
(lb/TBtu or lb/mmBtu, as applicable) or the electrical output-based emission rate (lb/GWh or
lb/MWh, as applicable), report the Hg, HC1, or HF emission rate in a MDHV record for each
operating hour in which valid data are obtained and reported for the unadjusted Hg, HC1, or HF
concentration (in a MMHV record) and for all of the auxiliary parameters needed to convert the
pollutant concentration to the units of the emission standard (in MHV records). For the calculation
of electrical output-based emission rates, use only unadjusted hourly stack gas flow ratesdo not
apply Part 75 bias adjustment factors to the flow rate data. Report the Hg, HC1, or HF emission
rates to three significant figures -using scientific notation, keeping only one leading non-zero digit
to the left of the decimal point. For example, an Hg emission rate of 0.000385 lb/GWh would be
reported as "3.98#E-4" with no spaces in between characters and the "E" capitalized. Do not use
"plus" characters after the "E" when reporting rates greater than or equal to one. For example, an
Hg emission rate of 3.85 lb/GWh would be reported as "3.9S5E0." For data prior to September 9.
2020. report the rate in scientific notation rounded to three significant figures. For example, if the
GWh. report 1.59E-1.
Use appropriate equations from Table 33, 35, or 37 (as applicable) of the ECMPS Monitoring Plan
Reporting Instructions to determine the hourly lb/mmBtu or lb/MWh Hg, HC1, or HF emission
rate. These equations must be defined in your electronic monitoring plan.
If the Hg, HC1, or HF concentration or any auxiliary parameter needed to calculate the pollutant
emission rate is either invalid or is a substitute data value, leave this field blank and report an
MODC of "38."
If you seek to comply with the electrical output-based standard and the hourly electrical load is
zero during unit operation, and all other essential parameters are valid, calculate the emission rate
using the default electrical load and report an MODC of "39." If the electrical load is missing
during unit operation, leave this field blank and report an MODC of "38."
If your affected EGU has a common stack or multiple stack exhaust configuration, see the
"Specific Considerations for the MATS Rule" presented at the end of this section.
MODC Code (MODCCode)
For parameters HGRE, HGRH, HCLRE, HCLRH, HFRE, HFRH, S02RE, or S02RH, report an
MODC of "36," "37," or "39" (as appropriate) for hours in which the emission rate is able to be
calculated, and report "38" for hours in which the emission rate cannot be calculated. Entry of
MODCs 36, 37, 38 and 39 is permitted.
For all other parameters, leave this field blank.
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2.5.2.1 MATS Derived Hourly Data
Table 31: MODC Codes and Descriptions for MDHV
Code
Parameter(s)
Description
36
HGRE, HGRH, HCLRE,
HCLRH, HFRE, HFRH,
S02RE, S02RH
Hourly Hg, HC1, SO2, or HF emission rate calculatedvalid data
obtained for pollutant concentration and for all essential auxiliary
parameters
37
HGRH, HCLRH, HFRH,
S02RH,
Hourly heat input-based Hg, HC1, SO2, or HF emission rate
calculated for a startup or shutdown hour, using the diluent cap
value
38
HGRE, HGRH, HCLRE,
HCLRH, HFRE, HFRH,
S02RE, S02RH
Hourly Hg, HC1, or HF emission rate not calculatedvalid
concentration not available or one or more essential auxiliary
parameters is either missing or reported as substitute data.
39
HGRE, HCLRE, HFRE,
S02RE
Hourly electric output-based Hg, HC1, SO2, or HF emission rate
calculated using the default electrical load value for a startup or
shutdown hour where there is heat input to an affected EGU but zero
gross output.
Formula Identifier (Formulaldentifier)
Report the Formula ID from the Monitor Formula Data record that is used for the calculation
of the parameter.
For operating hours in which the heat input-based Hg, SO2, HC1, or HF emission rate is calculated
and for operating hours when the emission rate is not calculated, report the formula ID
corresponding to the EPA Method 19 equation used. For operating hours in which the electrical
output-based Hg, SO2, HC1, or HF emission rate is calculated and for operating hours when the
emission rate is not calculated, report the formula ID corresponding (as applicable) to either
Equation A-2 or A-3 from Table 33 of the ECMPS Monitoring Plan Reporting Instructions (for
Hg), Equation S-2 or S-3 from Table 29 (for SO2), Equation HC-2 or HC-3 from Table 35 (for
HC1), or Equation HF-2 or HF-3 from Table 37 (for HF).
SBecfficCoasideiMoiM
Specific Considerations for the MATS Rule
For EGUs subject to the MATS Rule that have common stack configurations, you may
monitor emissions concentration and the necessary auxiliary parameters at the common
stack provided that all of the units sharing the stack are subject to the same emission limit
(see 40 CFR 63.8(b)(2)(i)). If this monitoring option is implemented, do not apportion the
hourly emission rate measured at the common stack to the individual units (i.e., do not
report any additional MATS Derived Hourly Value Data records under the ID numbers
of the units that share the common stack). However, if the units sharing the common stack
are not subject to the same emission standard, you must either monitor the units
individually to demonstrate compliance with the emission limits or monitor at the common
stack and demonstrate compliance with the most stringent emission limit.
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2.5.2.1 MATS Derived Hourly Data
If, for a particular unit, hourly emissions rates are monitored at multiple stacks (or ducts)
report the hourly emission rate measured at each stack (or duct) and an hourly flow-
weighted emission rate for the unit (i.e., report both stack (or duct)-level and unit-level
MATS Derived Hourly Value Data records). Use Equation MS-1 to calculate the
hourly unit-level emission rates:
i(ER), fe)(
e>=,
1(G),
2=1
(Equation MS-1)
Where:
Eh = Flow-weighted hourly average pollutant emission rate for the EGU
(lb/mmBtu, lb/TBtu, lb/MWh, or lb/GWh, as appropriate)
ER = Hourly average pollutant emission rate measured in the monitored stack or
duct (lb/mmBtu, lb/TBtu, lb/MWh, or lb/GWh, as appropriate)
Q = Hourly stack gas flow rate measured in the monitored stack or duct (scfh,
wet basis)
i = Designation for a particular stack or duct
n = Total number of monitored stacks or ducts
If quality-assured data are not obtained for the unadjusted pollutant concentration (i.e., Hg,
HC1, HF, or SO2, as applicable) and/or for any essential auxiliary parameter(s) at a
particular monitored stack or duct, do not calculate the emission rate at that location and
leave the "Unadjusted Hourly Value" field blank. Do not calculate the unit-level emission
rate for any operating hour in which a valid emission rate is not able to be calculated for all
of the stacks (or ducts).
For common stack configurations, if you elect to comply with an electrical output-based
standard, then, for hours in which all units that are operating in startup or shutdown mode
and the combined electrical load is zero, provided that all other parameters used in the
emission rate equation are valid, you must calculate the pollutant emission rate using the
default electrical load (as defined in ง63.10042). The default electrical load is not reported
if any unit that shares the stack is operating normally while another unit(s) is in startup or
shutdown mode.
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2.5.3 Hourly Fuel Flow Data
2.5.3 Hourly Fuel Flow Data
Hourly Fuel Flow Data, Overview
Whenever a flowmeter is used to determine heat input rate or SO2 or CO2 emissions in accordance
with Appendix D, report an Hourly Fuel FlowData (HFF) record for each type of oil and/or
gaseous fuel combusted during each operating hour using the Monitoring System ID associated
with the appropriate flowmeter monitoring system. Do not report an HFF record for low mass
emissions units (LME) that use a certified Appendix D fuel flowmeter for long term fuel flow
purposes; use the Long Term Fuel Flow (LTFF) record.
To report hourly SO2 mass emission rate, CO2 mass emission rate and/or Heat Input, you must also
submit the appropriate Hourly Parameter Fuel Flow Data records associated with each HFF
record.
If you measure fuel flow at a common pipe location, report a HFF record using the Stack Pipe ID
for each hour in which fuel is combusted by a unit served by the common pipe. Do not report HFF
records for the individual units on an hourly basis. Apportion the heat input rate calculated at the
common pipe location to each unit, using appropriate time-weighted apportionment formulas
based on load (see Appendix F and the Monitor Formula Data instructions). Report the
apportioned hourly heat input rate values in separate Derived Hourly Value Data (DHV)
records for the individual units. Use the hourly heat input rates and operating times from the DHV
records to calculate the cumulative heat input values for each unit and report these values in unit-
level Summary Value Data records. If you use uncertified fuel flowmeters at the unit and
Equation F-21D to apportion the common pipe heat input to the individual units, report HFF only
for the common pipe do not report any HFF records showing the fuel flow to the individual
units.
For Oil Fuel Flow Records
Report an HFF for any hour in which oil is combusted as a startup fuel and fuel flow is estimated
through tank measurements.
The oil flow rate is the net fuel flow rate to the unit(s). For example, it may represent the
difference between the values measured for the main supply and re-circulating oil lines or it may
represent the sum of oil flow for two fuel flowmeters measuring the same type of oil to the unit.
For oil fuel flow systems, if the fuel flow system measures mass flow rate of oil directly, leave
blank the following data elements:
Volumetric Flow Rate
Volumetric Units of Measure Code
Source of Data Volumetric Code
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2.5.3 Hourly Fuel Flow Data
Hourly Fuel Flow Data XMI. Model
Figure 15: Hourly Fuel Flow Data XML Elements
L - HourlyParameterfuelFlowData |+|
0..OD
Hourly Fuel Flow Data XML Elements
Fuel Code (FuelCode)
Report the type of oil or gaseous fuel combusted during the hour for the system. For oil fuels use
the general fuel type codes provided in Table 32 below. For gaseous fuels, you may either report
the type of fuel using the General Fuel Type codes (which are consistent with the codes used in the
Unit Fuel Data record in the monitoring plan) or report more specific fuel codes for the type of
gas combusted using one of the Specific Fuel Type codes. Both sets of fuel type codes are listed in
Table 33 below. The Fuel Code should match the Fuel Code in the Monitoring System Data
record associated with the Monitoring System ID.
For Oil Fuel Flow Records
Table 32: Oil Fuel Flow Fuel Codes and Descriptions
Code
Description
DSL
Diesel Oil
OIL
Residual Oil
OOL
Other Oil
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For Gas Fuel Flow Records
Table 33: Gas Fuel Flow Fuel Codes and Descriptions
Code
Description
General Fuel Type Codes
LPG
Liquefied Petroleum Gas (if measured as a gas)
NNG
Natural Gas
OGS
Other Gas
PNG
Pipeline Natural Gas (as defined in ง72.2)
PRG
Process Gas
Specific Fuel Type Codes
BFG
Blast Furnace Gas
BUT
Butane (if measured as a gas)
CDG
Coal-Derived Gas
COG
Coke Oven Gas
DGG
Digester Gas
LFG
Landfill Gas
PDG
Producer Gas
PRP
Propane (if measured as a gas)
RFG
Refinery Gas
SRG
Unrefined Sour Gas
Fuel Usage Time (FuelUsageTime)
Report the fraction of the clock hour during which the unit combusted the specified fuel. You may
use any equal increments from hundredths (0.01 hr) to quarters (0.25 hr) of an hour. Do not leave
this field blank.
For common pipes, report the cumulative portion of the hour during which the specified fuel was
combusted in any of the units served by the common pipe, not to exceed a fuel usage time of 1.00.
For example, if a common pipe serves Units 1 and 2 and both units operate for the first 24 minutes
(0.40 hr) of the hour and then are both shut down, the fuel usage time is 0.40. If Unit 1 operates
only for the first 24 minutes of the hour and Unit 2 operates only for the last 24 minutes of the
hour, the fuel usage time is 0.40 hr plus 0.40 hr, or 0.80. If Unit 1 operates for the first 40 minutes
of the hour and Unit 2 operates for the last 40 minutes of the hour, report a fuel usage time of 1.00,
since for all minutes in the hour, at least one of the units operated.
Volumetric Flow Rate (VolumetricFlowRate)
For Oil Fuel Flow Records
If the fuel flow system measures the volumetric flow rate of oil, report the net volumetric flow
rate, as measured, rounded to one decimal place. This value represents an hourly rate for periods in
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2.5.3 Hourly Fuel Flow Data
which the fuel is combusted, not a total flow for the hour. If the hourly oil flow rate is so small that
it results in a heat input rate of 0.0 mmBtu/hr (rounded to the nearest tenth) when Equation D-8 is
used, you may report, as a default value, the minimum oil flow rate that will give a heat input rate
greater than zero. This minimum oil flow rate must be defined in the Monitor Default Data
record in the monitoring plan.
For units using Appendix D to account for SO2 mass emissions you must report mass flow rate. If
you use a volumetric flowmeter, report the volumetric flow rate in this field, the mass oil flow rate
in the Mass Flow Rate field, and the density value used for the conversion in an Hourly
Parameter Fuel Flow record. If the fuel flow system measures mass flow rate of oil directly,
leave this field blank.
For Gas Fuel Flow Records
For Appendix D gas systems, the flow rate of gas is measured hourly by the fuel flowmeter
system. The flow rate is the net fuel flow rate to the unit(s). For example, it may represent the sum
of the gas flow rates for two fuel flowmeters measuring gas to the unit. All values must be reported
in 100 standard cubic feet per hour (100 scfh) rounded to one decimal place. This value represents
an hourly rate for periods in which the fuel is combusted, not a total flow for the hour. If the hourly
gas flow rate is so small that it results in a heat input rate of 0.0 mmBtu/hr (rounded to the nearest
tenth) when Equation D-6 is used, you may report, as a default value, the minimum gas flow rate
that will give a heat input rate greater than zero. This minimum gas flow rate must be defined in
the Monitoring Default Data record in the monitoring plan.
Volumetric Units of Measure Code (VolumetricUnitsOjMeasureCodej
Report the units of measure used to report volumetric flow rate using the appropriate code from
Table 34.
Table 34: Volumetric Units of Measure Codes and Descriptions
Fuel Type
Units of Measure Code
Description
Oil
BBLHR
Barrels/Hour
GALHR
Gallons/Hour
M3HR
Cubic Meters/Hour
SCFH
Standard Cubic Feet/Hour
Gas
HSCF
100 Standard Cubic Feet/Hour
Leave this field blank only for Oil HFF records, where the fuel flow system measures mass flow
rate of oil directly.
Source of Data Volumetric Code (SourceOfDataVolumetricCode)
Report the Source of Data Volumetric Code that indicates the type of value reported for gas flow
or volumetric oil flow rate, as shown in Table 35.
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2.5.3 Hourly Fuel Flow Data
Table 35: Source of Data Volumetric Codes and Descriptions
Code
Fuel Type
Description
0
Oil or Gas
Measured Data
1
Oil or Gas
Substitute Data Using Lookback Procedures
3
Oil or Gas
Maximum Potential Fuel Flow Rate (simplified missing data procedure for
peaking units, only)
4
Oil or Gas
Emergency Fuel (maximum unit fuel flow rate)
5
Oil
Igniter Oil from Tank Measurements
6
Oil
Uncertified OFFM to Measure Igniter Oil
9
Oil or Gas
Default Minimum Fuel Flow Rate
Leave this field blank only for Oil HFF records, where the fuel flow system measures mass flow
rate of oil directly.
Do not leave this field blank for gas fuel flow records.
Mass Flow Rate (MassFlow Rate)
For Oil Fuel Flow Records
Report the Mass Flow Rate of oil either measured directly by a fuel flowmeter system or
calculated from the volumetric flow rate measured by a fuel flowmeter system. All values must be
reported in lb/hr, rounded to one decimal place. This value represents an hourly rate for the period
in which fuel is combusted, not total flow for the hour.
For units using Appendix D to account for SO2 mass emissions, you must report mass flow rate in
order to calculate SO2 mass emissions. Where the density of the oil is determined by the applicable
ASTM procedures referenced in Part 75, use Equation D-3 to calculate the mass flow rate of oil (in
lb/hr).
OIL =V , t xD ,
rate oil-rate oil
(Equation D-3)
Where:
OILrate = Mass rate of oil consumed per hr (lb/hr)
Von -rate Volume rate of oil consumed per hr, measured in scfh, gal/hr, barrels/hr, or
m3/hr (rounded to one decimal place)
Doii = Density of oil, measured in lb/scf, lb/gal, lb/barrel, or lb/m3
However, for Subpart H units using Appendix D only for heat input determination, you may
measure and report either mass flow rate or volumetric flow rate of oil. If you use volumetric flow
rate and gross calorific value (GCV) to determine hourly heat input rate, leave this field blank.
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2.5.3 Hourly Fuel Flow Data
For Gas Fuel Flow Records
Leave this field blank.
Source of Data Mass Code (SourceOfDataMassCode)
For Oil Fuel Flow Records
Report one of the following codes to indicate the type of value reported for mass oil flow rate. If
the mass oil flow value was calculated from a volumetric oil flow value, report code 2, regardless
of what Source of Data code was reported for the volumetric oil flow. For emergency fuels where
certified fuel flowmeters are used instead of the maximum unit fuel flow rate for heat input, use
either code 0, 1, 2, or 3 as appropriate. Do not use code 4 unless the maximum unit fuel flow rate
option is used for reporting heat input for the emergency fuel.
Table 36: Source of Data Mass Codes and Descriptions
Code
Description
0
*Measured Data (using a mass flowmeter)
1
Substitute Data Using Lookback Procedures
2
*Mass Flowrate Derived from Volumetric Value
3
Maximum Potential Fuel Flow Rate (simplified missing data
procedure for peaking units, only)
4
Emergency Fuel (maximum unit fuel flow rate)
5
Igniter Oil from Tank Measurements
6
Uncertified OFFM to Measure Igniter Oil
9
Default Minimum Fuel Flow Rate
* Including measured or derived mass data, for an emergency fuel where a
certified mass or volumetric oil flowmeter is used.
Do not leave this field blank if fuel flow is reported in the MassFlowRate element.
Monitoring System ID (MonitoringSystemID)
Report the three character Monitoring System ID for the gas or oil fuel flowmeter system.
For hours in which you report the source of the fuel flow rate data (SourceOfDataVolumetricCode
or SourceOfDataMassCode element) as codes 4, 5, or 6 for "Emergency Fuels," where the
maximum unit fuel flow rate is used, or as "Igniter Oil from Tank Measurements," or "Uncertified
OFFM to Measure Igniter Oil," leave the Monitoring System ID blank.
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2.5.3.1 Hourly Parameter Fuel Flow Data
2,5.1 iiurly Parameter Fuel Flow Data
Hourly Parameter Fuel Flow Da rview
For each Hourly Fuel Flow Data (HFF) record, submit Hourly Parameter Fuel Flow
Data records to provide the following information, as applicable:
Gross calorific value (GCV) of the fuel;
Density of the oil, if oil is measured on a volumetric basis and is required to be converted
to a mass basis (for locations that report SO2);
Sulfur content or default SO2 emission rate for the fuel, for locations that report SO2;
Hourly heat input rate and/or SO2, and CO2 mass emission rate values, as calculated from
the hourly fuel flow; and
NOx emission rate determined using an Appendix E correlation curve for the single fuel.
Submit an Hourly Parameter Fuel Flow Data record separately for each parameter as
applicable. For units using Appendix D to account for heat input rate and SO2 and CO2
emissions, for each hour in which any type of oil or gas is burned, report an HOURLY
Parameter Fuel Flow Data record and the corresponding HFF record(s) for each fuel
combusted during the hour.
Hourly Parameter Fuel Flow Data, XML Model
Figure 16: Hourly Parameter Fuel Flow Data XML Elements
Hourly Parameter Fuel Flow Data XML Elements
Parameter Code (ParameterCode)
Report the parameter for the Hourly Parameter Fuel Flow Data record using one of the
codes in Table 37:
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2.5.3.1 Hourly Parameter Fuel Flow Data
Table 37: Parameter Codes and Descriptions for Hourly Parameter Fuel Flow Data
Code
Description
C02
CO2 Mass Emission Rate (tons/hr)
DENSOIL
Density of Oil
FC
Carbon-Based F-Factor (for CO2 calculation)
GCV
Gross Calorific Value for Oil or Gas
HI
Heat Input Rate (mmBtu/hr)
NOXR
NOx Emission Rate (lb/mmBtu) (Appendix E)
S02
SO2 Hourly Mass Rate (lb/hr)
S02R
Default SO2 Emission Rate (lb/mmBtu)
SULFUR
Sulfur Content (percent by weight)
Parameter Value for Fuel (ParameterValueForFuel)
If the Parameter Code is "S02," report the SO2 mass emission rate for the fuel in lb/hr calculated
using Equation D-2, D-4, or D-5 from Appendix D to Part 75.
If the Parameter Code is "C02," report the CO2 mass emission rate for the fuel in tons/hr
calculated using Equation G-4 from Appendix G to Part 75.
If the Parameter Code is "HI," report the Heat Input rate for the fuel calculated by multiplying
the heat content (GCV) of the fuel by the hourly fuel flow rate. Report this value in units of
mmBtu/hr.
If the Parameter Code is "NOXR," report the NOx emission rate for the fuel in lb/mmBtu
determined using an Appendix E correlation curve.
If the Parameter Code is "GCV," report the gross calorific value used to calculate heat input. Be
sure to use the units of measure that correspond to the units used to report the fuel flow.
If the Parameter Code is "DENSOIL," report the density of oil used to calculate mass oil flow
rate from volumetric oil flow rate. Be sure to use the units of measure that correspond to the
units used to report the fuel flow.
If the Parameter Code is "FC" report the carbon based F-factor for this fuel, as used to calculate
CO2 using equation G-4.
If the Parameter Code is "SULFUR," for oil fuel flow records, if percent sulfur is measured, the
actual value may be reported to the appropriate number of decimal places in Table 38. Use Table
D-4 in Appendix D to Part 75 to determine what value you should report in this field. For gas
fuel flow records report the sulfur content of the gaseous sample in grains/100 scf. Use Table D-
5 in Appendix D to Part 75 to determine the correct value. If the sulfur content for any sample(s)
is 0.04 grains/100 scf or less, report 0.1 grains/100 scf.
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2.5.3.1 Hourly Parameter Fuel Flow Data
If the Parameter Code is "S02R," report the default SO2 emission rate for natural gas of 0.0006
lb/mmBtu for pipeline natural gas if pipeline natural gas is combusted. If calculating a default
emission rate using Equation D-1H, report the default rate in this field.
For all parameter codes, report the value to the appropriate number of decimal places in Table
38.
Table 38: Precision of Reported Values for Parameter Value for Fuel
Parameter Codes
Number of Decimal Places
C02, FC, GCV, HI
One
DENSOIL
Six
NOXR
Three
S02
Oil
One
S02
Gas
Five
S02R
Five
SULFUR
Oil
Four
SULFUR
Gas
One
Formula Identifier (Formulaldentifier)
Report the code corresponding to the formula listed in the monitoring plan used to calculate the
parameter for the Hourly Parameter Fuel Flow Data record. For parameters GCV, FC,
DENSOIL, and SULFUR, leave this field blank. For parameter S02R, report this field if using a
D-1H formula, otherwise leave it blank.
Sample Type Code (SampleTypeCode)
Report the type of sample used to determine the GCV, density, or sulfur content using one of the
codes in Table 39.
Table 39: Sample Type Codes and Descriptions
Code
Fuel
Parameters
Description
0
Gas
GCV, SULFUR
Actual Measured Hourly Average Sample from GCH
1
Oil
GCV, DENSOIL,
SULFUR
Actual Measured Value from Oil Composite or Tank Sample
2
Gas
GCV, SULFUR
Actual Measured Value from a Daily Sample
Oil
GCV, DENSOIL,
SULFUR
3
Gas
GCV
Actual Measured GCV from Most Recent Monthly Sampling
4
Gas
GCV, SULFUR
Actual Measured Value from Most Recent Shipment or Lot
5
Gas
SULFUR
Highest Daily Sample in 30 Daily Samples
Oil
GCV, DENSOIL,
SULFUR
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2.5.3.1 Hourly Parameter Fuel Flow Data
Code
Fuel
Parameters
Description
6
Gas
GCV, SULFUR
Highest Sampled Value in Previous Calendar Year (or a higher
sampled value, superseding the assumed value)
Oil
GCV, DENSOIL,
SULFUR
7
Gas
GCV, SULFUR
Maximum Value Allowed by Contract (or a higher sampled value,
superseding the assumed value)
Oil
GCV, DENSOIL,
SULFUR
8
Gas
GCV, SULFUR
Missing Data (Maximum Potential Value for missing data or
emergency fuel from Table D-6 Appendix D section 2.4.1)
Oil
GCV, DENSOIL,
SULFUR
Monitoring System ID (MonitoringSystemID)
For Appendix E NOx rate records (Parameter NOXR), report the three-character Monitoring
System ID for the applicable NOXE system. If there is no applicable NOXE system (e.g., for
emergency fuel records) leave this field blank. Also leave this field blank for other parameters.
Operating Condition Code (OperatingConditionCode)
For Appendix E NOx rate records (Parameter NOXR), report the appropriate code from Table 40
that indicates the condition that was used to determine the NOx emission rate for the hour.
Table 40: Operating Condition Codes and Descriptions for Hourly Parameter Fuel Flow
Code
Description
E
Emergency Fuel or Ignition Fuel
M
Correlation Curve for the Fuel Mixture Has Expired
N
Operating Parameter Is Outside of Normal Limits
U
Uncontrolled Hour
W
Operation Above Highest Tested Heat Input Rate Point on the
Curve
X
Operating Parameter Data Missing or Invalid
Y
Designated Operational and Control Equipment Parameters
within Normal Limits
Z
Operation Below Lowest Tested Heat Input Rate Point on the
Curve
When to Report "E"
Report "E" if the unit burned an emergency or ignition fuel during the hour and you do not have
a separate correlation curve for the emergency fuel. For these hours, report the fuel-specific
maximum potential NOx emission rate (MER) in the ParameterValueForFuel field.
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2.5.3.1 Hourly Parameter Fuel Flow Data
When to Report "M"
When 20 calendar quarters have elapsed since the quarter of the last Appendix E test for a
particular type of fuel, without a subsequent re-test being done, the correlation curve for that fuel
type has expired. From that point on (i.e., starting with the first hour after the end of the 20th
quarter), the previous correlation curve is considered invalid, and you must report the fuel-
specific MER for every hour in which the fuel is combusted, until a successful re-test has been
completed. Report "M" for each such hour.
When to Report "N"
Report "N" if a unit operating parameter is outside of normal limits. For example, report "N"
when excess O2 exceeds by more than 2.0 percent the excess O2 value recorded at the same
operating heat input rate during the last NOx emission rate test.
Also, if one or more parameters are outside the normal limits for > 16 consecutive operating
hours, a re-test is required within 30 unit operating days or 180 calendar days (whichever occurs
first see Appendix E, Section 2.3). Beginning with the 17th consecutive "out-of-spec"
operating hour and continuing until the re-test is completed, continue to report "N" for each hour
of combustion of the fuel(s) that triggered the need for the re-test.
Use missing data procedures from Appendix E for any hour in which "N" is indicated. These
procedures require you to substitute the highest tested NOx emission rate on the curve for the
fuel.
Note: If fuel flow rate and gross calorific value data are missing, use the missing data procedures
in Appendix D, not Appendix E.
When to Report "U"
For units with add-on NOx controls only. Report "U" if any parameter used to verify proper
operation of the emission controls is outside of normal limits (or the control equipment is not
functioning). For these hours, report the fuel-specific NOx MER in the Parameter Value for Fuel
field.
When to Report "W"
Report "W" if the hourly heat input rate is higher than the maximum heat input rate correlated on
the curve. Use the missing data procedures in section 2.5.2.1 of Appendix E when this occurs.
During your next periodic or quality assurance/quality control related testing, test under
conditions more representative of your maximum potential heat rate. If possible, use the new
maximum heat input rate as the highest heat input point during the next test.
When to Report "X"
For missing or invalid excess O2 or other operating parameter data, report "X" and report the
highest NOx emission rate on the curve for the fuel. This indicates that the hour is not
demonstrated to be within the specified limits in Section 2.3 of Appendix E, but it also is not
demonstrated to be outside the specified limits. (Note that the use of the "X" value is optional,
you may choose instead to treat these hours as out-of-spec.) Hours marked with "N" count
towards the 16 consecutive unit operating hours before retesting is required, while hours marked
with "X" do not count for this purpose. In either case, the data count against the availability of
data where the unit operates within the parameters. If the data availability falls below 90.0
percent, the Agency may require retesting.
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2.5.3.1 Hourly Parameter Fuel Flow Data
When to Report "Z"
Report "Z" if the hourly heat input rate is below the lowest heat input rate. In this case it is not
necessary to verify that the operational parameters are within any specified limits. Report the
same NOx emission rate recorded during testing at the lowest heat input rate.
Segment Number (SegmentNumber)
For an Appendix E NOx Emission Rate record (for a unit using one correlation curve for a
consistent fuel mixture), report the Segment Number (1 - 4) indicating which portion of the
correlation curve was used to determine the value for the hour. For operating condition codes N
or X, report the segment number that contains the highest NOx emission rate on the curve for the
fuel. Leave this field blank if the correlation curve was not used for the hour (i.e., the Operating
Condition Code is E, M, U, or W).
Parameter UOM Code (ParameterUOMCode)
Report the code from Table 41 that identifies the unit of measure in which the Parameter Value
for Fuel is reported. Be sure it corresponds properly to the units of measure in which the Hourly
Fuel Flow rate was reported.
Table 41: Units of Measure Codes and Descriptions for Hourly Parameter Fuel Flow
Parameter
Code
Description
C02
TNHR
Tons per Hour
DENSOIL
LBBBL
Pounds per Barrel
LB GAL
Pounds per Gallon
LBM3
Pounds per Cubic Meter
LBSCF
Pounds per Standard Cubic Foot
FC
SCFCBTU
CO2 Standard Cubic Feet/mmBtu
GCV
BTUBBL
BTU per Barrel
BTUGAL
BTU per Gallon
BTULB
BTU per Pound
BTUM3
BTU per Cubic Meter
BTUSCF
BTU per Standard Cubic Foot
BTUHSCF
BTU per 100 Standard Cubic Feet
HI
MMBTUHR
Million BTU per Hour
S02
LBHR
Pounds per Hour
S02R, NOXR
LBMMBTU
Pounds per Million BTU
SULFUR
PCT
Percent by Weight
GRHSCF
Grains per 100 Standard Cubic Feet
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2.5.4 Hourly GFM Data
2.5.4 Hourly GFM Data
Hourly GFM Data, Overview
For each hour of a data collection period in which a sorbent trap monitoring system is used,
report Hourly GFM Data records as follows:
Generally, two Hourly GFM Data records will be reported for each hour, i.e., one for each
sampling train ("STRAIN") component of the monitoring system. However, note the following
exceptions:
For hours in which the unit or stack does not operate, do not report any HOURLY GFM
Data records.
Also, do not report these records for hours outside the current calendar quarter, even
though a sample collection period may extend into the next quarter.
If valid GFM data (sample flow meter volume reading) are not recorded with a particular
STRAIN component for the beginning or ending hour of the data collection period, do
not report Hourly GFM Data records for that component and report a "QA Status
Code" of "INC" in the applicable Sampling Train Data record (see section 2.7.1).
If the trap from one sampling train is accidentally broken, lost, or invalidated, do not
report Hourly GFM Data records for the STRAIN component associated with that trap,
and report a "QA Status Code" of "LOST" in the applicable Sampling Train Data
record (see section 2.7.1).
If the sample gas flow meter was "out-of-control" during the entire sample collection
period, do not report Hourly GFM Data records for the STRAIN component associated
with that flow meter, and report a "QA Status Code" of "EXPIRED" in the applicable
Sampling Train Data record (see section 2.7.1).
If the sample gas flow meter was unavailable for a portion of the sample collection
period, report a code of "N" in the Hourly GFM BeginEndHourFlag for the hours when
the sample gas flow meter was unavailable. When "N" is reported for the hour, do not
report HourlyGFMReading, AvgHourlySamplingRate, SamplingRateUOM, or
Hourly SF SRRati o.
If the trap from one sampling train did not pass the post-monitoring leak check, percent
breakthrough, SFSR ratio, or percent spike recovery, do not report Hourly GFM Data
records for the STRAIN component associated with that trap, and report a "QA Status
Code" of "FAILED" in the applicable Sampling Train Data record (see section 2.7.1).
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2.5.4 Hourly GFM Data
Hourly GFM Data XML Model
Figure 17: Hourly GFM Data XML Elements
Hourly GFM Data XML Elements
Component ID (ComponentID)
Report the ID number of the STRAIN component used during the hour.
Begin End Hour Flag (BeginEndHourFlag)
Report an "I" flag for the Hourly GFM Data record that marks the beginning of the sample
collection period. Report an "F" flag to indicate the Hourly GFM Data record that marks the
end of the sample collection period. Report a "T" flag for a "transition hour," when one sample
collection period ends and another begins in the same hour (pair of sorbent traps is removed from
service, and a new pair of traps is placed in service in the same hour). Report an "N" flag for
hours when the sample gas flow meter was unavailable during a portion of the sample collection
period. When "N" is reported for the hour, do not report HourlyGFMReading,
AvgHourlySamplingRate, SamplingRateUOM, or HourlySFSRRatio. For all other hours during
a sample collection period, leave this field blank.
Hourly GFM Reading (HourlyGFMReading)
At the beginning and end of the sample collection period, and once in every intermediate hour of
the sample collection period, record and report the hourly sample flow meter volume reading, in
units of in dry standard cubic meters (dscm). Round off the reading to two decimal places. For
instructions on how to report the hourly GFM reading in a "transition hour," see the "Specific
Considerations" section below.
Avg Hourly Sampling Rate (AvgHourlySamplingRate)
Report the average sample flow rate for the hour, rounded to two decimal places. Be sure to
express the value in the same units of measure for each hour. For instructions on how to report
the sample flow rate in a "transition hour," see the "Specific Considerations" section below.
Sampling Rate UOM (SamplingRateUOM)
Indicate the units of measure for the Avg Hourly Sampling Rate by reporting the appropriate
code from Table 42. For instructions on how to report the sampling rate UOM in a "transition
hour," see the "Specific Considerations" section below.
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2.5.4 Hourly GFM Data
Table 42: Sampling Rate Units of Measure Codes and Descriptions
Code
Description
CCMIN
Cubic Centimeters per Minute
DSCMMIN
Dry Standard Cubic Meters per Minute
LMIN
Liters per Minute
CCHR
Cubic Centimeters per Hour
DSCMHR
Dry Standard Cubic Meters per Hour
LHR
Liters per Hour
Hourly SFSR Ratio (HourlySFSRRatio)
Report the ratio of the unadjusted hourly average stack gas flow rate to the average hourly
sample flow rate, calculated according to Equation 12B-3 of Performance Specification 12B in
40 CFR Part 60, Appendix B. The ratio must be a number between 1 and 100, rounded off to one
decimal place.
Use data from the first hour of the sample collection period to calculate the "reference SFSR
ratio." However, if the stack gas flow rate in the first hour of the sample collection period is a
substitute data value, defer calculation of the reference ratio until a quality-assured stack gas
flow rate is obtained. Also defer calculation of the reference ratio if the first hour of the sample
collection period is a "transition hour" (see "Specific Considerations" section below).
For all hours during the sample collection period when valid stack gas flow rate data are
available, no more than 5% of the hourly ratios or 5 hourly ratios (whichever is less restrictive)
may deviate from the reference ratio by more than ฑ25%. Do not calculate the ratio for hours in
which the stack gas flow rate is a substitute data value, or if the average sample flow rate is
missing or invalid.
SBecfficCoasideiMoiM
For a "transition hour," when one pair of sorbent traps is removed from service and a new pair of
traps is placed in service, note the following instructions:
Report the hourly GFM reading, average hourly sampling rate, and sampling rate UOM,
for the pair of traps removed from service in the hour.
Calculate the hourly SFSR ratio for the "old" pair of traps that are removed from service,
by taking the ratio of the hourly average stack gas flow rate (even though the pair of traps
was used for only part of the hour) to the average sample flow rate for the part of the hour
in which the old pair of traps was in operation.
For the "new" pair of traps that is placed into service, do not use data recorded during the
transition hour to calculate the SFSR reference ratio, even though the transition hour is
the first hour in the sample collection period. Rather, calculate the SFSR reference ratio
for the new pair of traps in the next hour in the sample collection period.
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2.6 Long Term Fuel Flow Data
2.6 Long Term Fuel Flow Data
Lone Term Fuel Flow Data XML Model
Figure 18: Long Term Fuel Flow Data XML Elements
Lone Term Fuel Flow Da rview
If you have a qualifying low mass emissions (LME) unit or group of units and use a long term
fuel flow system to measure oil or gas to calculate heat input, report a Long Term Fuel Flow
Data record for each long term oil (LTOL) monitoring system and each long term gas (LTGS)
monitoring system used during the quarter or reporting period.
For a group of LME units served by a common pipe (or supply tank), you must define a LTOL or
LTGS monitoring system in the monitoring plan for the pipe or tank. In both cases (i.e., for
common pipe or tank), the pipe or tank ID number must begin with a "CP" prefix (e.g., CP001).
If two or more common pipes or tanks of different fuel types supply the same group of LME
units, you must define a separate LTOL or LTGS system for each pipe or tank. If two or more
pipes or tanks supply the same type of fuel to a group of LME units, you may represent it as a
single LTOL or LTGS system.
Lone Term Fuel Flow Data XML Elements
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID for the long term fuel flow location. This is the
alphanumeric code assigned by a source to identify a unit, stack, or pipe.
Monitoring System ID (MonitoringSystemID)
Report the monitoring system ID, either LTOL or LTGS, for the long term fuel flow (LTFF)
system.
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2.6 Long Term Fuel Flow Data
Fuel Flow Period Code (FuelFlowPeriodCode)
If this location is subject to an ozone season program and this is a second quarter emissions file,
report either "A" to indicate that this record contains long term fuel flow for the month of April,
or "MJ" to indicate that this record contains long term fuel flow for May and June. Otherwise,
leave this field blank.
LTFF Value (LongTermFuelFlow Value)
Report the total fuel flow recorded for the quarter, reporting period, or fuel flow period to zero
decimal places. If you measure in units other than gallons, pounds or standard cubic feet, convert
the reading to allowable units by using conversion equations.
Instructions for Using Billing Records
If you have daily billing records, then use the daily fuel usage to apportion the fuel flow
on a daily basis to hours within the ozone season or quarter beginning on the first
operating day of the ozone season or quarter and ending on the last operating day of the
ozone season or quarter.
Example 1. If a billing period starts on June 15 and ends on July 16 and the bill includes
daily usage, use the daily quantities to determine which fuel was combusted during June
(attributed to the second quarter) and which fuel was combusted during July (attributed to
the third quarter).
If the bill does not specify daily fuel usage, apportion fuel based on unit output, as
reported in the Operating Hour Data record.
Example 2. If the billing period starts on June 15 and ends on July 16, and the bill only
has total fuel combusted during the period, apportion the fuel into June and July based on
the unit output for the billing period. Thus, if 75 percent of the unit output between June
15 and July 16 occurred during June, then apportion 75 percent of the total fuel into June
and 25 percent into July.
It is the responsibility of the owner/operator to obtain all necessary billing records in time
to ensure timely quarterly report submissions.
Instructions for Using Tank Drop Measurements
For year-round reporting, measure the tank volume (the beginning and ending LTFF
measurement) within no more than 48 hours of the beginning or end of a quarter.
Example 3. If you measure the level of oil in a tank on December 30 or 31 or on January
1 or 2, use this measurement (compared to the baseline value at the beginning of the
quarter) to calculate the amount of fuel combusted during the quarter (even if the
measurement was taken in January). Use this measurement as the baseline for
determining the amount of fuel combusted during the next quarter. When apportioning
heat input based on unit output only, use output from the beginning and end of the
quarter, not the output corresponding to the beginning and end of the actual measurement
period.
Perform as many measurements as necessary to accurately determine fuel usage during
the measurement period. The Agency recommends performing measurements before and
after fuel is added to a tank unless you know the exact volume of fuel added to the tank.
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2.6 Long Term Fuel Flow Data
If a unit operated for only a very short period or used only a very limited amount of fuel
during a quarter or reporting period so that a tank drop measurement will not yield an
accurate estimate of the fuel combusted during the quarter, use the unit's maximum rated
heat input for each hour of operation during that quarter. Report a method of
determination code (MODC) of "45" in the Derived Hourly Value Data (DHV)
record for Total Heat Input (HIT) for each hour.
Instructions for Using Certified Fuel Flowmeters
When a certified Appendix D fuel flowmeter is used for long term fuel flow purposes,
you are required to record hourly fuel flow rates. You must also submit MONITORING
System Fuel Flow Data in the monitoring plan and must submit the results of all
periodic fuel flowmeter quality assurance tests. However, reporting of hourly fuel flow
rate information is not required. Therefore, do not report Hourly Fuel Flow Data
(HFF) records for LME units.
Use the recorded hourly fuel flow rates, fuel usage times (if available), and the density of
the fuel (if needed) to determine the total mass or volume (as applicable) of each type of
fuel combusted during the reporting period. Then, use Equation LM-2 or LM-3 in ง75.19,
as appropriate, to calculate the heat input from each type of fuel combusted during the
reporting period. Add together all of the reporting period heat input values for all fuels,
according to Equation LM-4. Then, apportion the total heat input for the reporting period
to each operating hour in the period, using Equations LM-5 through LM-8A (as
applicable) replacing the term "quarter" with the term "reporting period."
When calculating the total mass or volume of fuel combusted, if hourly fuel usage times
are not available, use a value of 1.00 for each operating hour in the reporting period.
If any fuel flowmeter data are missing for any hour(s) in the reporting period, you must
provide substitute data for those hours, using either: (1) the load-based missing data
procedures in Appendix D (if these procedures are programmed in the Data Acquisition
and Handling System (DAHS)); or (2) the maximum system fuel flow rate in
Monitoring System Fuel Flow Data record).
Long Term Fuel Flow UOM Code (LongTermFuelFlowUOMCode)
Report the units of measure in which you are reporting fuel flow using one of the following
uppercase codes in Table 43.
Table 43: Long Term Fuel Flow UOM Code
Code
Description
GAL
Gallons (oil)
LB
Pounds (oil)
SCF
Standard Cubic Feet (gas)
Gross Calorific Value (GrossCalorificValue)
Report the heat content or gross calorific value (GCV) of the fuel from Table LM-5 of ง75.19 or
the highest GCV recorded in the previous calendar year from fuel sampling and analysis
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2.6 Long Term Fuel Flow Data
according to the procedures of Appendix D to Part 75. If you measure in units other than those
listed below, convert to an allowable unit by using appropriate conversion equations. Report the
value to one decimal place.
GCV Units of Measure Code (GCVUnitsojMeasureCode)
Report the units of measure for GCV using one of the uppercase codes in Table 44.
Table 44: GCV Units of Measure Code
Code
Description
btugal
Btu per Gallon
btulb
Btu per Pound
btuscf
Btu per Standard Cubic Feet
Total Heat Input (TotalHeatlnput)
Calculate and report the total heat input (mmBtu) measured by the LTFF system for the quarter
or reporting period using the appropriate heat input formula from ง75.19 (e.g., LM-2, LM-3).
Report the value to zero decimal places.
Specific Considerations
If this system is the only LTFF system used for the unit or group of units, apportion this
heat input to the unit operating hours in the quarter (or reporting period) using the
appropriate equation in ง75.19. If two or more LTFF systems are used during the quarter
or reporting period, sum the total heat input values from all systems before apportioning
heat input to the unit operating hours.
For a single LME unit which is not part of a group of LME units, the total heat input
values for all LTFF systems used during the quarter must equal the quarterly unit heat
input value reported in the Summary Value Data record.
For a group of LME units served by one or more common pipes or tanks, you must report
both LTFF and Summary Value Data records under each common pipe (or tank) ID
number. For each common pipe or tank ID, the total heat input reported in the LTFF
record(s) must equal the quarterly heat input reported in the Summary Value Data
record.
For any hour during which the unit is burning a secondary fuel that is not measured by a
long term fuel flow system, you must calculate the total heat input for the hour using the
maximum rated hourly heat input rate for the unit. Report an MODC of "45" in the DHV
record for (HIT) for the hour.
If a unit (or group of units linked to a common pipe) using LTFF to determine heat input
burns fuel, but does not generate any load during the reporting period, apportion the total
heat input based on operating time instead of load using the appropriate equation in
ง75.19.
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2.7 Sorbent Trap Data
2.7 Sorbent Trap Data
Sorbent Trap Data Overview
Report a Sorbent Trap Data record for each sorbent trap sampling period that begins inside the
current calendar quarter.
To the extent practicable, time the sample collection periods so that they do not cross quarter
boundaries. However, if a sample collection period does extend into the next quarter:
Be sure to end it early enough to obtain and process the results before the deadline for
submitting the emissions report for the current quarter; and
Include it in the emissions report for the current quarter, even though its end date is in the
next quarter.
Report all relevant hourly MHV and MMHV records for each sample collection period (i.e.,
records of Hg concentration and all auxiliary parameters needed to convert Hg concentration to
the units of the applicable emission standard).
Sorbent Trap Data XML Model
Figure 19: Sorbent Trap Data XML Elements
2
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2.7 Sorbent Trap Data
Sorbent Trap Data XML Elements
Unit ID or Stack Pipe ID (UnitID or StackPipelD)
Report either the Unit ID or Stack Pipe ID (i.e., the monitoring location). This is the
alphanumeric code assigned by a source to identify a unit, stack, or pipe.
Monitoring System ID (MonitoringSystemID)
Report the monitoring system ID for the sorbent trap monitoring system represented by this
record.
Begin Date (BeginDate)
Report the date that the sample collection period began.
Begin Hour (BeginHour)
Report the hour that the sample collection period began.
End Date (EndDate)
Report the date that the sample collection period ended. This date could be in the next calendar
quarter.
End Hour (EndHour)
Report the last hour of the sample collection period.
HgSystemConcentration (HgSystemConcentration)
Determine the quality-assured, unadjusted Hg concentration for the monitoring system (|ig/scm),
as follows:
If the QA Status Code (from section 2.7.1) is "PASSED" for both sampling train ("STRAIN")
components of the system and the relative deviation (RD) criterion is also met, then average the
measured Hg concentrations from the two components arithmetically and report the result using
one leading non-zero digit and one decimal place, expressed in scientific notation.7 For data prior
to Septembe 20. report the result rounded to three significant figures.
If the QA Status Code is "PASSED" for one of the STRAIN components and "FAILED" or
"LOST" for the other, multiply the Hg concentration obtained with the passing component by
1.111 and report the result using one leading non-zero digit and one decimal place, expressed in
scientific notation. For data prior to September 9. 2020. report the result rounded to three
significant figures.
If the QA Status Code for both trains is "UNCERTAIN" (indicating that all QA/QC criteria were
met for both STRAIN components, but the relative deviation (RD) criterion was not met), you
may either invalidate the data or report the higher of the two measured Hg concentrations using
one leading non-zero digit and one decimal place, expressed in scientific notation. For data prior
to Septembe 20. report the result rounded to three significant figures.
Report the Hg System Concentration in a MMHV record, for each hour of the sample collection
period (see "Specific Considerations" in section 2.5.1.1). Report each concentration value to
#iree-stgftffieffflt#gซfซsrusing scientific notation, keeping only one leading non-zero digit to the
left of the decimal point and one decimal place, with the "E" capitalized and no spaces in
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2.7 Sorbent Trap Data
between the characters. For example, if the Hg concentration is 0.159 |ig/scm, report 1.659E-1.
Do not use "plus" characters after the "E" when reporting concentrations greater than or equal to
one. For example, if the Hg concentration is 1.59 |ig/scm, report 1.659E0. For data prior to
September 9. 2020. report the Hg concentration value to three significant figures, using scientific
notation. For example, if the 1 U> concentratic v > t scm. report 1.59E-1.
Leave this field blank if a quality-assured Hg concentration for the sample collection period is
not available. The Hg concentration is considered to be unavailable if:
The QA Status Code is "EXPIRED" or "INC" for either or both STRAIN components;
The QA Status Code is "FAILED" or "LOST" for both STRAIN components;
The QA Status Code for both STRAIN components is "UNCERTAIN" and you elect to
invalidate the data; or
If the flue gases are routed through an unmonitored bypass stack and the Hg
concentration is not measured.
Paired Trap Agreement (PairedTrapAgreement)
Report either the relative deviation (RD) or absolute difference between Traps "a" and "b,"
rounded to two decimal places. Calculate the RD using Equation 12B-7 in Performance
Specification 12B.
Leave this field blank if:
The QA Status Code is "EXPIRED," "FAILED," or "INC" for either or both STRAIN
components;
The QA Status Code is "LOST" for both trains; or
If the flue gases are routed through an unmonitored bypass stack and the Hg
concentration is not measured.
Absolute Difference Indicator (AbsoluteDifferencelndicator)
If the paired trap difference is determined based on the relative deviation, report "0." If the
absolute difference is used, report "1."
Leave this field blank if PairedTrap Agreement is also left blank for any of the reasons detailed
above.
MODC Code (MODCCode)
Report the method of determination code (MODC) from Table 45 for the hourly Hg
concentration.
The QA Status Codes from section 2.7.1 are used to determine the appropriate MODC, as
follows:
Report a MODC of "01" (or "02" for a backup monitoring system) if the QA Status Code for
both STRAIN components is "PASSED." Report this same MODC in a MMHV record for each
hour of the sample collection period (see section 2.5.1.1).
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2.7 Sorbent Trap Data
Report a MODC of "32" if the QA Status Code is "PASSED" for one of the STRAIN
components and "FAILED" or "LOST" for the other. Report this same MODC in a MMHV
record for each hour of the sample collection period.
Report a MODC of "33" if the QA Status Code for both STRAIN components is
"UNCERTAIN" and you elect to report the higher of the two Hg concentrations. Report this
same MODC in a MMHV record for each hour of the sample collection period.
Report a MODC of "34" if:
The QA Status Code is "EXPIRED" or "INC" for either or both STRAIN components;
The QA Status Code is "FAILED" or "LOST" for both STRAIN components; or
The QA Status code for both STRAIN components is "UNCERTAIN" and you elect to
invalidate the data.
When MODC "34" is reported in this field, also report MODC "34" in a MMHV record for each
hour of the sample collection period and report MODC "38" in a MDHV record for each hour of
the sample collection period (see section 2.5.2.1).
Report MODC "35" in this field if the flue gases are routed through an unmonitored bypass stack
and the Hg concentration is not measured. Report this same MODC in a MMHV record and
report MODC "38" in a MDHV record, for each hour of the sample collection period (see
section 2.5.2.1).
Report a MODC of "43" if the QA Status Code for both STRAIN components is "PASSED" and
the method detection level is reported as the measured emissions level for the sorbent trap (see
63.10007(e)(1)). Report this same MODC in a MMHV record, and report MODC "36" in a
MDHV record, for each hour of the sample collection period (see section 2.5.1.1).
Report a MODC of "44" in this field if one trap in a paired train meets the criteria to report the
method detection level and the QA Status Code is "FAILED" or LOST" for the other STRAIN
component, (see 63.10007(e)(1)). Report this same MODC in a MMHV record for each hour of
the sample collection period, and report MODC "36" in a MDHV record for each hour of the
sample collection period (see section 2.5.2.1).
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2.7 Sorbent Trap Data
Table 45: MODC Codes for Sorbent Trap Data
Code
Description
01
Primary Monitoring System (and Primary Bypass (PB))
02
Redundant Backup or Regular Non-Redundant Backup Monitoring System
32
Hourly Hg concentration determined from analysis of a single sorbent trap
multiplied by a factor of 1.111
33
Hourly Hg concentration determined from the sorbent trap with the higher Hg
concentration (relative deviation criterion for the paired traps is not met)
34
Hourly Hg concentration is missing or invalid
35
Hourly Hg concentration not monitored (flue gases routed through an
unmonitored bypass stack)
43
Hourly Hg concentration reported as method detection level when the sorbent trap
concentration reading is below the method defined analytical detection level (see
63.10007(e)(1))
44
Hourly Hg concentration determined from analysis of a single sorbent trap which
reports the method detection level, multiplied by a factor of 1.111 in cases where
the other trap was accidentally lost, damaged, or broken and could not be analyzed
RATAIndicator (RATAIndicator)
If the pair of traps were used as part of a set of RATA runs which were not long enough to
collect a Reference SFSR Ratio, report the code "1." For all other traps leave this field blank.
APSCode (APSCode)
If the pair of traps were used as part of a RATA run and meet the alternative performance
specifications of PS12B, report the code "RATA." For all other traps leave this field blank.
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2.7.1 Sampling Train Data
2.7.1 Sampling Train Data
Samp line Train Data Overview
For each Sorbent Trap Data record, submit two Sampling Train Data records, i.e., one for
each sampling train ("STRAIN") component of the sorbent trap monitoring system.
Samp line Train, Data XML Model
Figure 20: Sampling Train Data XML Elements
Samp line Train Data XML Elements
Component ID (ComponentID)
Report the STRAIN component ID.
Sorbent Trap SN (SorbentTrapSN)
Report the serial (ID) number of sorbent trap associated with the STRAIN component.
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2.7.1 Sampling Train Data
Main Trap Hg (MainTrapHg)
Report the mass of Hg recovered from the main collection section (Section 1) of the sorbent trap,
in micrograms (|ag) rounded to three sij^nil^iCtint l^i gttfes-using scientific notation. For example,
"0.0144 |ig" should be reported as "1.44E-2." The "E" must be capitalized, and the field must
not contain spaces in between the characters. Do not use "plus" characters after the "E" when
reporting concentrations greater than or equal to one. For example, "1.44 |ig" should be reported
as "1.44E0." Report only one figttre-leading non-zero digit to the left of the decimal point, and
one digit after the decimal point. For data prior to September 9. 2020. report the mass in
scientific notation rounded to three significant figures. For example, if the mass of 1 hi is 0 1 5^
ug/scni. report 1.59E-1.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
BT Trap Hg (BTTrapHg)
Report the mass of Hg recovered from the breakthrough section (Section 2) of the sorbent trap,
in micrograms (|ag) rounded to three sij^nil^iCtint l^i gttfes-using scientific notation. For example,
"0.0144 |ig" should be reported as "1.44E-2." The "E" must be capitalized, and the field must
not contain spaces in between the characters. Do not use "plus" characters after the "E" when
reporting concentrations greater than or equal to one. For example, "1.44 |ig" should be reported
as "1.44E0." Report only one figttre-leading non-zero digit to the left of the decimal point, and
one digit after the decimal point.r For data prior to September 9. 2020. report the mass in
scientific notation rounded to three significant figures. For example, if the mass of 1 hi is 0 1 5^
ug/scni. report 1.59E-1.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Spike Trap Hg (SpikeTrapHg)
Report the mass of Hg recovered from the spiked section (Section 3) of the sorbent trap, in
micrograms (|ag) rounded to three si^mi^iCti ปt#gซfes-using scientific notation. For example,
"0.0144 |ig" should be reported as "1.44E-2." The "E" must be capitalized and the field must not
contain spaces in between the characters. Do not use "plus" characters after the "E" when
reporting concentrations greater than or equal to one. For example, "1.44 |ig" should be reported
as "1.44E0." Report only one figttre-leading non-zero digit to the left of the decimal point, and
one digit after the decimal point. For data prior to September 9. 2020. report the mass in
scientific notation rounded to three significant figures. For example, if the mass of 1 hi is 0 1 5^
ug/scni. report 1.59E-1.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
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2.7.1 Sampling Train Data
Spike Reference Value (SpikeReferenceValue)
Report the mass of the pre-sampling Hg spike in micrograms (|_ig), calculated according to
Equation 12B-1 in Performance Specification 12B rounded to three significant -#gซfes-using
scientific notation. For example, "0.0144 |ig" should be reported as "1.44E-2." The "E" must be
capitalized, and the field must not contain spaces in between the characters. Do not use "plus"
characters after the "E" when reporting concentrations greater than or equal to one. For example,
"1.44 |ig" should be reported as "1.44E0." Report only one figure -leading non-zero digit to the
left of the decimal point, and one digit after the decimal point. For data prior to September 9.
2020. report the mass in scientific notation rounded to three significant figures. For example, if
the mass of 1 U> is 0 1 uu/scni. report 1.59E-1.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Total Sample Volume DSCM (TotalSampleVolumeDSCM)
Report the total volume of dry gas metered, in dry standard cubic meters (dscm), rounded to two
to four decimal places.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Reference SFSR Ratio (ReferenceSFSRRatio)
From the data recorded in the first hour of the sample collection period, determine the reference
ratio of the unadjusted hourly stack gas volumetric flow rate to the average sample flow rate (i.e.,
the "SFSR" Ratio), according to Equation 12B-2 in Performance Specification 12B. Report the
Reference SFSR Ratio as a number between 1 and 100 rounded to one decimal place.
If the stack gas flow rate in the first hour of the sample collection period is a substitute data
value, defer calculation of the reference ratio until a quality-assured hourly stack gas flow rate is
obtained. Also, if the first hour of the sample collection period is a "transition hour" (i.e., an
operating hour in which one pair of sorbent traps is removed from service and a second pair of
traps is placed in service), defer calculation of the reference SFSR ratio for the "new" pair of
traps until the next hour of the sample collection period.
Maintain the SFSR ratio within ฑ 25% of the reference ratio for each subsequent hour of the
sample collection period (see Table 12B-1 of Performance Specification 12B). However, do not
calculate the ratio for hours in which the stack gas flow rate is a substitute data value or if the
average sample flow rate is missing or invalid. For a discussion of how to report the hourly
SFSR ratio during transition hours, see the "Specific Considerations" in section 2.5.4.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
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2.7.1 Sampling Train Data
Sampling Ratio Check Result Code (SamplingRatioCheckResultCode)
Based on the criterion in Table 12B-1 of Performance Specification 12B, report the appropriate
code from Table 46 to indicate whether the ratio of the stack gas flow rate to the sampling rate
was maintained within the required percentage, as follows:
Table 46: Sampling Ratio Check Result Codes and Descriptions
C ode
Description
PASSED
Test was passed. The hourly ratio was maintained within 25% of the reference ratio
throughout the sample collection period.
FAILED
Test was failed. The hourly ratio was not maintained within 25% of the reference
ratio throughout the sample collection period.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Hg Concentration (HgConcentration)
Report the Hg concentration determined from the total Hg catch (sum of the mass collected in
sections 1 and 2 of the sorbent trap) and the total volume of dry gas metered. Use Equation 12B-
6 in Performance Specification 12B to calculate the Hg concentration in |j,g/scm
stgnffieffflt#gซfes-using scientific notation. For example, if the Hg concentration is 0.0245
|ig/scm, report 2.45E-2. The "E" must be capitalized and the field must not contain spaces in
between the characters. Do not use "plus" characters after the "E" when reporting concentrations
greater than or equal to one. For example, if the Hg concentration is 2.45 |ig/scm, report 2.45E0.
Report only one figttfe-leading non-zero digit to the left of the decimal point, and one digit after
the decimal point. For data prior to September 9. 2020. report the mass in scientific notation
rounded to three significant figures. For example, if the 1 U> concentration is 0.159 ug/scni. report
1.59E-1.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Post Leak Check Result Code (PostLeakCheckResultCode)
Report the results of the post-test leak check conducted at the end of the sample collection
period. If the post-test leak check is passed, report "PASSED," if the leak check is failed, report
"FAILED."
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Percent Breakthrough (PercentBreakthrough)
Report the percent breakthrough, calculated according to Equation 12B-5 in Performance
Specification 12B.
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2.7.1 Sampling Train Data
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," if the measured Hg concentration is
not less than 10% of the Hg limit equivalent concentration, or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Percent Spike Recovery (PercentSpikeRecovery)
Report the percent spike recovery, calculated according to Equation 12B-4 in Performance
Specification 12B, rounded to one decimal place.
Leave this field blank if the sample was accidentally lost, damaged, or broken and could not be
analyzed, if the sample gas flow meter was "out-of-control," or if the sample gas volume reading
for the initial or final hour of the sample collection period was missing or invalid.
Train QA Status Code (TrainQAStatusCode)
Report the appropriate code from Table 47 below to indicate the QA status of this sampling train.
Table 47: Train QA Status Codes and Descriptions
C ode
Description
PASSED
The post-monitoring leak check, % breakthrough, stack flow-to-sample
flow ratio, and % spike recovery criteria in PS 12B were all met, and the
QA status of the sample flow meter was "in control."
FAILED
The QA status of the sample flow meter was "in control," but at least
one of the following four QA/QC criteria in PS 12B was not met: the
post-monitoring leak check; % breakthrough; stack flow-to-sample flow
ratio; or % spike recovery.
INC
Gas Flow Meter data are incomplete (missing or invalid for the
beginning or ending hour of the sample collection period)
EXPIRED
Required QA (calibration) was not performed on the sample flow meter
component. The QA status of the flow meter is "out-of-control."
LOST
Trap was accidentally lost, damaged, or broken and could not be
analyzed
UNCERTAIN
The post-monitoring leak check, % breakthrough, stack flow-to-sample
flow ratio, and % spike recovery criteria in PS 12B were all met, and the
QA status of the sample flow meter was "in control." However, the
relative deviation (RD) criterion for the paired traps was not met
Sample Damage Explanation (SampleDamageExplanation)
Whenever the sample is accidentally lost, damaged, or broken and cannot be analyzed (i.e., the
Train QA Status Code is "LOST"), provide a brief explanation of the reason why the sample
could not be analyzed.
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2.8 NSPS Subpart TTTT Compliance Reports
2.8 NSPS Subp ipliance Reports
If your EGU is subject to the NSPS Greenhouse Gas Rule (40 CFR 60 Subpart TTTT), you must
begin submitting quarterly compliance reports after you have accumulated 12 operating months
of C02 emissions data. The initial quarterly report must include the twelfth operating month in
the first 12-operating month compliance period.
Each quarterly compliance report must include the applicable information in this section, 2.8.
Note that the annual potential and actual energy output and electrical output values are reported
only in the report for the fourth calendar quarter.
If any month in the calendar quarter is the twelfth operating month in a compliance period, you
must also report the applicable information in section 2.8.1 of these instructions for that
compliance period.
In the fourth calendar quarter of each year in which you submit quarterly compliance reports,
you must also report the applicable information in section 2.8.2 of these instructions.
If your EGU is not subject to the NSPS Greenhouse Gas Rule, do not report any of the data
elements in sections 2.8, 2.8.1, or 2.8.2 in your quarterly emissions file.
NSPS Summary Data XML Model
Figure 21: NSPS4TSummary Data XML Elements
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2.8 NSPS Subpart TTTT Compliance Reports
NSPS4TSummary Data XML Elements
C02 Emissions Standard Code (C02StandardCode)
Report the code from Table 48, below, which corresponds with the emissions standard from
Table 1 or Table 2 of subpart TTTT with which the EGU must comply.
Table 48: C02 Emissions Standard Codes
Code
Description
NEW640
Newly constructed steam generating unit or integrated gasification combined cycle (IGCC)
following the standard in Table 1 of Subpart TTTT:
640 kg CCh/MWh of gross energy output
RCON910
Reconstructed steam generating unit or IGCC that has base load rating of 2,000 MMBtu/h or less
following the standard in Table 1 of Subpart TTTT:
910 kg of CO2 per MWh of gross energy output
RCON820
Reconstructed steam generating unit or IGCC that has a base load rating greater than 2,000
MMBtu/h following the standard in Table 1 of Subpart TTTT:
820 kg of CO2 per MWh of gross energy output
MODUS
A modified steam generating unit or IGCC using a unit-specific standard that must be:
> 820 kg of CO2 /MWh gross, for units with a base load > 2,000 mmBtu/hr or
> 910 kg of CO2 / MWh gross, for units with a base load < 2,000 mmBtu/hr
CTOUT
Newly constructed or reconstructed stationary combustion turbine that supplies more than its design
efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on
both a 12-operating month and a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
450 kg (1,000 lb) of CO2 per MWh of gross energy output
CTOUTNT
Newly constructed or reconstructed stationary combustion turbine that supplies more than its design
efficiency or 50 percent, whichever is less, times its potential electric output as net-electric sales on
both a 12-operating month and a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
470 kg (1,030 lb) of CO2 per MWh of net energy output
CTHING
Newly constructed or reconstructed stationary combustion turbine that supplies its design efficiency
or 50 percent, whichever is less, times its potential electric output or less as net-electric sales on
either a 12-operating month or a 3-year rolling average basis, and combusts more than 90% natural
gas on a heat input basis on a 12-operating-month rolling average basis following the standard in
Table 2 of Subpart TTTT:
120 lb CO2 /mmBtu
CTHIMF
Newly constructed and reconstructed stationary combustion turbine that combusts 90% or less
natural gas on a heat input basis on a 12-operating-month rolling average basis, as determined by
the procedures in ง60.5525 following the standard in Table 2 of Subpart TTTT:
120 lb CCfc/MMBtu) to 160 lb CCh/MMBtu
MODUS Value (MODUSValue)
If the EGU is complying with a unit-specific C02 emission standard, report the numeric value of
the standard. For all other C02 emission standards, leave this field blank.
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2.8 NSPS Subpart TTTT Compliance Reports
MODUS Units of Measure Code (MODUSUOMCodej
Report the units of measure from Table 49, below, which correspond to the unit-specific C02
emission standard.
Table 49: C02M Emission Rate Units of Measure Code
Code
Description
KGMWH
kg/MWh
LBMMBTU
lb/MMBTU
LBMWH
lb/MWh
Electrical Load Code (ElectricalLoadCode)
Report a code of either "GROSS" or "NET" to indicate if the energy output values used in
compliance determination are based solely upon gross or net electrical load.
No Compliance Period Ended Indicator (NoCompliancePeriodEndedlndicator)
Indicate if a compliance period ended in the quarter for which the report is being prepared. Use a
"1" for yes and "0" for no.
No Compliance Period Ended Comment (NoCompliancePeriodEndedComment)
If there are no compliance periods that end in the quarter for which the report is prepared,
include a statement to that effect.
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2.8.1 NSPS Subpart TTTT Fourth Quarter Data
2.8.1 NSPS4T Compliance Period Data
NSPS4T Compliance Period Data Overview
You must report data in the "Compliance Period End" field in each quarterly report. Then, if any
month in the calendar quarter is the twelfth operating month in a 12- operating month
compliance period, you must report the applicable data elements in this section, 2.8.1, for that
compliance period. Do not report these elements if your EGU is not subject to this subpart.
NSPS4T Compliance Period Data X. odd
Figure 22: NSPS4T Compliance Period Data XML Elements
NSPS4T Compliance Period Data XML Elements
Begin Year(BeginYear)
Report the year (20xx) in which the first operating month in the compliance period occurred.
Begin Month (BeginMonth)
Report the first operating month in the compliance period for which you performed a C02 mass
emissions rate calculation as a numerical value 0-12.
End Year (EndYear)
Report the year (20xx) in which the twelfth operating month in the compliance period occurred.
End Month (EndMonth)
Report the twelfth operating month in the compliance period for which a C02 mass emission
rate was calculated as a numerical value 0-12.
Average C02 Emission Rate (AverageC02EmissionRate)
Report the average C02 mass emissions rate for the compliance period.
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2.8.1 NSPS Subpart TTTT Fourth Quarter Data
CO2 Emission Rate Units of Measure Code (C02EmissionRateUOMCode)
Indicate the units of measure of the average CO2 emission rate using the appropriate code from
Table 49. either kg/MWh or lb/mmBtu.
Percent Valid Operating Hours (PercentValidOpHours)
Report the percentage of valid operating hours in each 12-month compliance period. If more than
one compliance period ends in the quarter, report one PercentValidOpHours for each compliance
period.
Violation of CO2 Standard (ViolationofC02StandardIndicator)
Indicate whether or not the EGU violated the applicable CO2 emission standard in the
compliance period. Report "1" if a violation did occur and "0" if no violation of the standard
occurred.
Violation of CO2 Standard Comment (ViolationofC02StandardComment)
If one or more compliance periods ends in the quarter and there are no violations of the C02
emissions standard that occurred for the affected EGU, include a statement indicating this.
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2.8.2 NSPS Subpart TTTT Fourth Quarter Data
2.8.2 NSPS4T Fourth Quarter Data
In the report for the fourth calendar quarter of the year, you must include certain data elements
not required in other calendar quarters. Do not report these elements if your EGU is not subject
to this subpart.
NSPS4T Fourth Quarter Data X odd
Figure 23: NSPS4T Fourth Quarter Data XML Elements
AnnuaEnergySold 1
i 5P54TFOU rttiQuarterData ฃ]-(ฆ)3-
AnnuaEnergySokiTypeCode 1
Ann ualFote ntiaEtert rieOutpit
NSPS4T Fourth Quarter Data X. ements
Annual Energy Sold (AnnualEnergySold)
In the report for the fourth quarter, report the amount of output sold over the four quarters of the
calendar year. Leave this field blank if the report is for any other quarter.
Annual Energy Sold Type Code (AnnualEnergySoldTypeCode)
Report a code of either "GROSS" or "NET" to indicate if the annual energy sold to the grid was
in terms of gross or net energy for the unit. Leave this field blank if the report is for any other
quarter.
Annual Potential Electric Output (AnnualPotentialElectricOutput)
In the report for the fourth calendar quarter of each year, report the potential annual electric
output of the EGU in the report, in units of megawatt hours (MWh). Leave this field blank for all
other quarterly reports.
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