1 

Technical Support Document (TSD) 

for the Transport Rule 

Docket ID No. EPA-HQ-OAR-2009-0491 

State Budgets, Unit Allocations, and Unit Emissions Rates: 

Field Descriptions for Detailed Unit-Level Data 

U.S. Environmental Protection Agency 

Office of Air and Radiation 

July 2010 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Table 1. Unit Characteristics 

Field Name Description 

Plant Name Plant name 

ORIS Facility ORIS code 

Unit ID Unit ID 

State State name 

NEEDS ID 

Unique identifier in National Electric Energy Data System (NEEDS) v3.02 EISA, 

which is used in IPM modeling. Blank for units not included in NEEDS v3.02 

EISA. 

Capacity (MW) 

Net summer generating capacity. Blank for units not matched to NEEDS, which are 

assumed to be greater than 25 MW. 

Projected-Reported 

Relationship 

Number of NEEDS units mapped to source of reported data. Typically, the 

relationship is 1:1. Where 2 or more NEEDS units are mapped to a single unit 

reporting data, the emissions are divided evenly between the NEEDS units. 

Committed SCR - 2010-

2011 SCR expected online in 2010-2011 

Committed SCR - 2009 SCR online in 2009 

Committed SNCR - 2010-

2011 SNCR expected online in 2010-2011 

Committed SNCR - 2009 SNCR online in 2009 

Committed FGD - 2010-

2011 FGD expected online in 2010-2011 

Committed FGD - 2009 FGD online in 2009 

SCR Installed before 2009 SCR installed prior to 2009 

SNCR Installed before 2009 SNCR installed prior to 2009 

Projected Base Case NonDispatchable FGD Retrofit New FGD retrofit projected to be installed in TR Base Case modeling. 

Projected Base Case NonDispatchable SCR Retrofit New SCR retrofit projected to be installed in TR Base Case modeling. 

Projected Base Case NonDispatchable SNCR 

Retrofit New SNCR retrofit projected to be installed in TR Base Case modeling. 

SCR - Existing or 

Committed by 2012 (nondispatchable) Non-dispatchable SCR expected online by 1/1/2012 

SNCR - Existing or 

Committed by 2012 SNCR expected online by 1/1/2012 

SCR - Existing or 

Committed by 2012 

(dispatchable) Dispatchable SCR expected online by 1/1/2012 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Field Name Description 

FGD - Existing or 

Committed by 2012 

(dispatchable) Dispatchable FGD expected online by 1/1/2012 

Covered Unit (Fossil > 25 

MW) Covered unit under the Transport Rule (Fossil-fired, greater than 25 MW capacity ) 

NEEDS FGD Removal 

Rate (%) SO2 removal rate attributable to FGD 

Notes: NEEDS v3.02 EISA available at: http://www.epa.gov/airmarkets/progsregs/epa-ipm/transport.html

For more information on dispatchable controls, see “Updates to EPA Base Case v3.02 EISA Using the Integrated 

Planning Model” available in the docket. 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Table 2. Reported Data 

Field Name Description 

Plant Name Plant name 

ORIS Facility ORIS code 

Unit ID Unit ID 

State State name 

Heat Input Q1-2007 

(mmBtu) 

Heat Input Q1-2008 

(mmBtu) 

Heat Input Q1-2009 

(mmBtu) 

Heat Input Q2-2007 

(mmBtu) 

Heat Input Q2-2008 

(mmBtu) 

Heat Input Q2-2009 

(mmBtu) 

Heat Input Q3-2007 

(mmBtu) 

Heat Input Q3-2008 

(mmBtu) 

Heat Input Q3-2009 

(mmBtu) 

Heat Input Q4-2007 

(mmBtu) 

Heat Input Q4-2008 

(mmBtu) 

Quarterly heat input as reported to EPA 

NOX Mass Q1-2007 (tons) 

NOX Mass Q1-2008 (tons) 

NOX Mass Q1-2009 (tons) 

NOX Mass Q2-2007 (tons) 

NOX Mass Q2-2008 (tons) 

NOX Mass Q2-2009 (tons) 

Quarterly NOX emissions as reported to EPA 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Field Name Description 

NOX Mass Q3-2007 (tons) 

NOX Mass Q3-2008 (tons) 

NOX Mass Q3-2009 (tons) 

NOX Mass Q4-2007 (tons) 

NOX Mass Q4-2008 (tons) 

SO2 Mass Q1-2007 (tons) 

SO2 Mass Q1-2008 (tons) 

SO2 Mass Q1-2009 (tons) 

SO2 Mass Q2-2007 (tons) 

SO2 Mass Q2-2008 (tons) 

SO2 Mass Q2-2009 (tons) 

SO2 Mass Q3-2007 (tons) 

SO2 Mass Q3-2008 (tons) 

SO2 Mass Q3-2009 (tons) 

SO2 Mass Q4-2007 (tons) 

SO2 Mass Q4-2008 (tons) 

Quarterly SO2 emissions as reported to EPA 

Heat Input Ozone Season 

2009 (mmBtu) Ozone season heat input as reported to EPA 

NOX Mass 2009 Ozone 

Season 2009 (tons) Ozone season NOX emissions as reported to EPA 

Heat Input Ozone Season 

2008 (mmBtu) Ozone season heat input as reported to EPA 

NOX Mass Ozone Season 

2008 (tons) Ozone season NOX emissions as reported to EPA 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Field Name Description 

Heat Input Ozone Season 

2007 (mmBtu) Ozone season heat input as reported to EPA 

NOX Mass Ozone Season 

2007 (tons) Ozone season NOX emissions as reported to EPA 

Annual NOX Mass, tons 

(most recent 4 Qs) 

Sum of NOX emissions from most recent quarter 1, quarter 2, quarter 3, and quarter 

4 for units with reported data. 0 for units without data from each quarter 1-4 

Annual SO2 Mass, tons 

(most recent 4 Qs) 

Sum of SO2 emissions from most recent quarter 1, quarter 2, quarter 3, and quarter 4 

for units with reported data. 0 for units without data from each quarter 1-4 

Annual Heat Input, mmBtu 

(most recent 4 Qs) 

Sum of heat input from most recent quarter 1, quarter 2, quarter 3, and quarter 4 for 

units with reported data. 0 for units without data from each quarter 1-4 

Ozone Season HI, mmBtu 

(most recent OS) Ozone season heat input from most recent ozone season, 2007-2009 

Ozone Season NOX Mass, 

tons (most recent OS) Ozone season NOX emissions from most recent ozone season, 2007-2009 

2008 Reported Heat Input 

(mmBtu) 2008 annual heat input as reported to EPA 

Note: Reported emissions data available at: 

http://camddataandmaps.epa.gov/gdm/index.cfm?fuseaction=emissions.wizard 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Table 3. Projected Data 

Field Name Description 

Plant Name Plant name 

ORIS Facility ORIS code 

Unit ID Unit ID 

State State name 

Proj Base Case - Ozone Season 

Heat Input (mmBtu) Projected 2012 ozone season heat input in TR Base Case 

Proj Base Case - Annual Heat 

Input (mmBtu) Projected 2012 annual heat input in TR Base Case 

Proj Base Case - Ozone Season 

NOX Mass (tons) Projected 2012 ozone season NOX emissions in TR Base Case 

Proj Base Case - Annual NOX

Mass (tons) Projected 2012 annual NOX emissions in TR Base Case 

Proj Base Case - Annual SO2 Mass 

(tons) Projected 2012 annual SO2 emissions in TR Base Case 

Fossil Fuel Unit (model) Fossil fuel source in IPM modeling 

Projected Annual NOX Mass - 

TR_NOX_500 (tons) Projected annual NOX emissions in the IPM run titled: TR_NOX_500 

Projected Annual Heat Input - 

TR_NOX_500 (mmBtu) Projected annual heat input in the IPM run titled: TR_NOX_500 

Projected Ozone Season NOX Mass 

- TR_NOX_OS_500 (tons) Projected ozone season NOX emissions in the IPM run titled: TR_OS_500 

Projected Ozone Season Heat Input 

- TR_NOX_OS_500 (mmBtu) Projected ozone season heat input in the IPM run titled: TR_OS_500 

Projected SO2 Rate - 

TR_SO2_1600 (lbs/mmBtu) Projected annual SO2 emissions rate in the IPM run titled: TR_SO2_1600 

Projected Heat Input - 

TR_SO2_1600 (mmBtu) Projected annual heat input in the IPM run titled: TR_SO2_1600 

Share of 2015 Projected SO2

Emissions from Covered Units in 

TR SB Limited Trading 

Unit share of state total projected SO2 emissions from fossil-fired units 

greater than 25 mw in 2015 TR SB Limited Trading (Group 1 states only) 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Table 4. Adjustments 

Field Name Description 

Plant Name Plant name 

ORIS Facility ORIS code 

Unit ID Unit ID 

State State name 

Adjustment to Reported Annual 

NOX - pre-2009 SCR (tons) 

Adjustment made to reported annual NOX emissions for units with SCR 

installed prior to 2009 

Adjustment to Reported Annual 

NOX - pre-2009 SNCR (tons) 

Adjustment made to reported annual NOX emissions for units with 

SNCR installed prior to 2009 

Adjustment to Reported Annual 

NOX - 2010-2011 SCR (tons) 

Adjustment made to reported annual NOX emissions for units with SCR 

expected online in 2010-2011 

Adjustment to Reported Annual 

NOX - 2010-2011 SNCR (tons) 

Adjustment made to reported annual NOX emissions for units with 

SNCR expected online in 2010-2011 

SNCR removal efficiency (%) NOX removal rate attributable to SNCR 

Adjustment to Reported Annual 

NOX - 2009 SCR (tons) 

Adjustment made to reported annual NOX emissions for units with SCR 

installed in 2009 

Adjustment to Reported Annual 

NOX - 2009 SNCR (tons) 

Adjustment made to reported annual NOX emissions for units with 

SNCR installed in 2009 

Adjustment to Reported Annual 

NOX - non-Dispatchable SCR 

Retrofit in Base Case (tons) 

Adjustment made to reported annual NOX emissions for units with nondispatchable SCR retrofit projected in the 2012 TR Base Case 

Adjustment to Reported Annual 

NOX - SNCR Retrofit in Base 

Case (tons) 

Adjustment made to reported annual NOX emissions for units with 

SNCR retrofit projected in the 2012 TR Base Case 

Adjustment to Reported SO2 - 

2010-2011 FGD (tons) 

Adjustment made to reported annual SO2 emissions for units with FGD 

expected online in 2010-2011 

Adjustment to Reported SO2 - 

2009 FGD (tons) 

Adjustment made to reported annual SO2 emissions for units with FGD 

online in 2009 

Adjustment to Reported SO2 - 

non-Dispatchable FGD Retrofit in 

Base Case (tons) 

Adjustment made to reported annual SO2 emissions for units with nondispatchable FGD retrofit projected in the 2012 TR Base Case 

Adjustment to Reported OzoneSeason NOX - 2010-2011 SCR 

(tons) 

Adjustment made to reported ozone season NOX emissions for units 

with SCR expected online in 2010-2011 

Adjustment to Reported OzoneSeason NOX - 2010-2011 SNCR 

(tons) 

Adjustment made to reported ozone season NOX emissions for units 

with SNCR expected online in 2010-2011 

Adjustment to Reported OzoneSeason NOX - 2009 SCR (tons) 

Adjustment made to reported ozone season NOX emissions for units 

with SCR online in 2009 

Adjustment to Reported OzoneSeason NOX - 2009 SNCR (tons) 

Adjustment made to reported ozone season NOX emissions for units 

with SNCR online in 2009 

Adjustment to Reported OzoneSeason NOX - Non-Dispatchable 

SCR Retrofit in Base Case (tons) 

Adjustment made to reported ozone season NOX emissions for units 

with non-dispatchable SCR retrofit projected in the 2012 TR Base Case 

Adjustment to Reported OzoneSeason NOX - SNCR Retrofit in 

Base Case (tons) 

Adjustment made to reported ozone season NOX emissions for units 

with non-dispatchable SNCR retrofit projected in the 2012 TR Base 

Case 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Field Name Description 

Total Adjustments to Reported 

Annual NOX (tons) Sum of adjustments to reported annual NOX emissions 

Total Adjustments to Reported 

SO2 (tons) Sum of adjustments to reported annual SO2 emissions 

Total Adjustments to Reported 

Ozone Season NOX (tons) Sum of adjustments to reported ozone season NOX emissions 

Adjustment to Projected Annual 

NOX - Existing/committed SCR 

(non-dispatchable) (tons) 

Adjustment made to 2012 projected annual NOX emissions in TR Base 

Case for units with non-dispatchable SCR expected online by 1/1/2012 

Adjustment to Projected Annual 

NOX - Existing/committed SNCR 

(non-dispatchable) (tons) 

Adjustment made to 2012 projected annual NOX emissions in TR Base 

Case for units with non-dispatchable SNCR expected online by 

1/1/2012 

Adjustment to Projected Annual 

NOX - Existing/committed SCR 

(dispatchable) (tons) 

Adjustment made to 2012 projected annual NOX emissions in TR Base 

Case for units with dispatchable SCR expected online by 1/1/2012 

Adjustments to Projected Annual 

NOX - Non-Dispatchable SCR 

Retrofit in Base Case (tons) 

Adjustment made to 2012 projected annual NOX emissions in TR Base 

Case for units with non-dispatchable SCR retrofit in 2012 TR Base 

Case 

Adjustments to Projected Annual 

NOX - Non-Dispatchable SNCR 

Retrofit in Base Case (tons) 

Adjustment made to 2012 projected annual NOX emissions in TR Base 

Case for units with non-dispatchable SNCR retrofit in 2012 TR Base 

Case 

Adjustment to Projected SO2 - 

Existing/committed FGD 

(dispatchable) (tons) 

Adjustment made to 2012 projected annual SO2 emissions in TR Base 

Case for units with dispatchable FGD expected online by 1/1/2012 

Adjustment to Projected Ozone 

Season NOX - Existing/committed 

SCR (dispatchable) (tons) 

Adjustment made to 2012 projected ozone season NOX emissions in 

TR Base Case for units with dispatchable SCR expected online by 

1/1/2012 

Annual NOX - Total Adjustments 

to Base Case Projections (tons) 

Sum of adjustments to 2012 projected annual NOX emissions in TR 

Base Case 

Annual SO2 - Total Adjustments 

to Base Case Projections (tons) 

Sum of adjustments to 2012 projected annual SO2 emissions in TR 

Base Case 

Ozone Season NOX - Total 

Adjustments to Base Case 

Projections (tons) 

Sum of adjustments to 2012 projected ozone season NOX emissions in 

TR Base Case 

Note: For further information on adjustments, see TSD titled: “State Budgets, Unit Allocations, and Unit Emissions 

Rates” available in the docket. 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Table 5. Adjusted Data 

Field Name Description 

Plant Name Plant name 

ORIS Facility ORIS code 

Unit ID Unit ID 

State State name 

Reported Annual NOX - Adjusted 

for Controls (tons) Reported annual NOX emissions with control adjustments 

Reported Annual SO2 - Adjusted 

for Controls (tons) Reported annual SO2 emissions with control adjustments 

Reported Ozone Season NOX - 

Adjusted for Controls (tons) Reported ozone season NOX emissions with control adjustments 

Reported Annual NOX - Adjusted 

for controls and heat input (tons) 

Reported annual NOX emissions with control adjustments and heat 

input adjustment 

Reported Ozone Season NOX - 

Adjusted for controls and heat 

input (tons) 

Reported ozone season NOX emissions with control adjustments and 

heat input adjustment 

Adjusted Annual NOX - Projected 

Base Case (tons) 2012 projected annual NOX in TR Base Case with control adjustments 

Adjusted Annual SO2 - Projected 

Base Case (tons) 2012 projected annual SO2 in TR Base Case with control adjustments 

Adjusted Ozone Season NOX - 

Projected Base Case (tons) 

2012 projected ozone season NOX in TR Base Case with control 

adjustments 

Note: For further information on adjustments, see TSD titled: “State Budgets, Unit Allocations, and Unit Emissions 

Rates” available in the docket. 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Table 6. Allocations & Rate Limits 

Field Name Description 

Plant Name Plant name 

ORIS Facility ORIS code 

Unit ID Unit ID 

State State name 

SO2 Group 1 (more 

stringent) & Annual NOX

Region Unit located in SO2 group 1 state and annual NOX region 

SO2 Group 2 (less stringent) 

& Annual NOX Region Unit located in SO2 group 2 state and annual NOX region 

Ozone Season Region Unit located in ozone season region state 

Source of SO2 Data 

For units with both reported and projected SO2 emissions, the source of emissions 

data used in determining state budget, as determined at the state level 

Source of Annual NOX Data 

For units with both reported and projected annual NOX emissions, the source of 

emissions data used in determining state budget, as determined at the state level 

Source of Ozone Season 

NOX Data 

For units with both reported and projected ozone season NOX emissions, the source 

of emissions data used in determining state budget, as determined at the state level 

2012 SO2 Allocation 

2012-2013 SO2 allocation, rounded to the nearest ton, after withholding 3% for new 

unit set-aside 

Annual NOX Allocation 

Annual NOX allocation, rounded to the nearest ton, after withholding 3% for new 

unit set-aside 

Ozone Season NOX

Allocation 

Ozone season NOX allocation, rounded to the nearest ton, after withholding 3% for 

new unit set-aside 

2014 and Beyond SO2

Allocation 

2014 and thereafter SO2 allocation, rounded to the nearest ton, after withholding 

3% for new unit set-aside 

Heat Input assumed in 2012 

SO2 Allocation Heat input associated with emissions used in determining 2012-2013 SO2 allocation 

Heat Input assumed in 2014 

and beyond SO2 Allocation 

Heat input associated with emissions used in determining 2014 and thereafter SO2

allocation 

Heat Input assumed in 

Annual NOX Allocation Heat input associated with emissions used in determining annual NOX allocation 

Heat Input assumed in 

Ozone Season NOX

Allocation 

Heat input associated with emissions used in determining ozone season NOX

allocation 

2012 SO2 Rate (lbs/mmBtu) 

2012-2013 allowable SO2 emissions rate under Direct Control alternative remedy 

option 

2014 SO2 Rate (lbs/mmBtu) 

2014 and thereafter allowable SO2 emissions rate under Direct Control alternative 

remedy option 

Annual NOX Rate 

(lbs/mmBtu) 

Allowable annual NOX emissions rate under Direct Control alternative remedy 

option 
State Budgets, Unit Allocations, and Unit Emissions Rates – Field Description 

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Field Name Description 

Ozone Season NOX Rate 

(lbs/mmBtu) 

Allowable ozone season NOX emissions rate under Direct Control alternative 

remedy option