See second file associated with this docket entry on procedures to obtain these files

Run Name Run Description

TR_Base_Case_Final Base Case model run, which includes the national Title IV SO2 cap-and-trade 

program; NOX SIP Call regional ozone season cap-and-trade program; and 

settlements and state rules. This run represents conditions without the 

proposed Transport Rule and without the rule it would replace (CAIR).

TR_SO2_500_Final Imposes a marginal cost of $500 per ton of NOx year round in annual states 

starting in 2012, $500 per ton of ozone season NOx in ozone states starting 

in 2012, $500 per ton for SO2 year round in "Group 2" states starting in 

2012, $500 per ton for Group 1 States in 2012 and 2013, $500 per ton for 

Group 1 states in 2014 and each year thereafter. Also forces all SCR and 

FGD to operate for relevant time period if in a TR covered state.

TR_SO2_1600_Final Imposes a marginal cost of $500 per ton of NOx year round in annual states 

starting in 2012, $500 per ton of ozone season NOx in ozone states starting 

in 2012, $500 per ton for SO2 year round in "Group 2" states starting in 

2012, $500 per ton for Group 1 States in 2012 and 2013, $1,600 per ton for 

Group 1 states in 2014 and each year thereafter. Also forces all SCR and 

FGD to operate for relevant time period if in a TR covered state.

TR_SO2_2300_Final Imposes a marginal cost of $500 per ton of NOx year round in annual states 

starting in 2012, $500 per ton of ozone season NOx in ozone states starting 

in 2012, $500 per ton for SO2 year round in "Group 2" states starting in 

2012, $500 per ton for Group 1 States in 2012 and 2013, $2,300 per ton for 

Group 1 states in 2014 and each year thereafter. Also forces all SCR and 

FGD to operate for relevant time period if in a TR covered state.

TR_SO2_2800_Final Imposes a marginal cost of $500 per ton of NOx year round in annual states 

starting in 2012, $500 per ton of ozone season NOx in ozone states starting 

in 2012, $500 per ton for SO2 year round in "Group 2" states starting in 

2012, $500 per ton for Group 1 States in 2012 and 2013, $2,800 per ton for 

Group 1 states in 2014 and each year thereafter. Also forces all SCR and 

FGD to operate for relevant time period if in a TR covered state.

TR_SO2_3300_Final Imposes a marginal cost of $500 per ton of NOx year round in annual states 

starting in 2012, $500 per ton of ozone season NOx in ozone states starting 

in 2012, $500 per ton for SO2 year round in "Group 2" states starting in 

2012, $500 per ton for Group 1 States in 2012 and 2013, $3,300 per ton for 

Group 1 states in 2014 and each year thereafter. Also forces all SCR and 

FGD to operate for relevant time period if in a TR covered state.

TR_SO2_10,000_Final Imposes a marginal cost of $500 per ton of NOx year round in annual states 

starting in 2012, $500 per ton of ozone season NOx in ozone states starting 

in 2012, $500 per ton for SO2 year round in "Group 2" states starting in 

2012. For SO2 "Group 1" states, a cap of 2.41 million tons is imposed in 

2012 and 2013, and a cap of 344,000 ton is imposed in 2014 and each year 

thereafter for SO2. These caps were designed to reflect a 70% reduction 

from levels observed in the $500 per ton for Group 1 States in 2012 and 

2013, $3,300 per ton for Group 1 states in 2014 and each year thereafter. 

Also forces all SCR and FGD to operate for relevant time period if in a TR 

covered state.

TR_NOX_OS_500_Final Imposes a marginal cost of $500 per ton of NOX reduced in the ozone season 

on each of 26 ozone states (including those identified in SNPR) starting in 

2012. Also forces dispatchable SCRs to run in the ozone season if located in 

this region

TR_NOX_OS_1000_Final Imposes a marginal cost of $1,000 per ton of NOX reduced in the ozone 

season on each of 26 ozone states (including those identified in SNPR) 

starting in 2012. Also forces dispatchable SCRs to run in the ozone season if 

located in this region

These files in their entirety are located on CD(s) contained in the DC Docket Center. The System Summary Report and State Level Emission 

IPM outputs for each file are also available electronically in the Transport Rule Docket.

Transport Rule Base Case

Additional runs used for analysis of significant contribution*
TR_NOX_OS_5000_Final Imposes a marginal cost of $5,000 per ton of NOX reduced in the ozone 

season on each of 26 ozone states (including those identified in SNPR) 

starting in 2012. Also forces dispatchable SCRs to run in the ozone season if 

located in this region

TR_NOX_500_Final Imposes a marginal cost of $500 per ton of NOX reduced annually on each of 

23 states in the annual region. Also forces SCRs to operate year round if 

located in this region

TR_NOX_1000_Final Imposes a marginal cost of $1,000 per ton of NOX reduced annually on each 

of 23 states in the annual region. Also forces SCRs to operate year round if 

located in this region

TR_NOX_2500_Final Imposes a marginal cost of $2,500 per ton of NOX reduced annually on each 

of 23 states in the annual region. Also forces SCRs to operate year round if 

located in this region

TR_Remedy_Final Models the air quality-assured trading final remedy described in the 

Transport Rule preamble with variability limits ranging from 10 to 20%

TR_Remedy_Sensitivity_with_final_variability_limits Models the air quality-assured trading final remedy described in the 

Transport Rule preamble with variability limits of 18% for SO2 and Annual 

NOx, and 21% for ozone-season NOx

TR_A-4_ Less_ Stringent_Final

Remedy scenario similar to TR_Remedy_Final, but has SO2 budgets based 

on $1,600/ton instead of $2,300/ton

TR_A-4_ More_ Stringent_Final

Remedy scenario similar to TR_Remedy_Final, but has SO2 budgets based 

on $10,00/ton instead of $2300/ton

TR_Assurance_Penalty_Scenario_Final

Remedy scenario similar to TR_Remedy_Final, but allows states the option 

of exceeding its variability limit and paying penalty of two allowances per 

ton exceeded.

TR_No_FGD_in2014_Scenario_Final

Remedy scenario similar to TR_Remedy_Final, but does not allow for FGD 

build in response to Transport Rule in 2014

TR_Remedy_Sensitivity_final_variability_limits_no2014_FGD

Remedy scenario similar to TR_Remedy_Sensitivity_with_final_variability, 

but does not allow for FGD build in reponse to Transport Rule in 2014

TR_AQAT_Calibration

Remedy scenario used solely for purposes of calibrating AQAT and CAMX

TR_uncontrolled_ozone_states_Final

Marginal cost scenario similar to TR_SO2_2300, but AR, IN, LA, MD, and 

MS did not have ozone season NOx marginal cost constraint

TR_Remedy_Sensitivity_Subbit_Restrictions 

Remedy scenario similar to 

TR_Remedy_Sensitivity_with_final_variability_limits. Sensitivity analysis 

of the cost-effectiveness of Texas emission reductions under the Transport 

Rule while maintaining Texas lignite production and EGU lignite blending 

as high or higher than recent (EIA 2010) levels for 2012 and 2014 

projections, as some commenters maintain would occur in the future. The 

purpose of this analysis is to determine whether and how Texas could make 

cost-effective emission reductions under its Transport Rule requirements if 

units did not reduce their blending of lignite coal recently reported to EIA. In 

keeping with this sensitivity analysis, future lignite reserve assumptions in 

the model were realigned with 2010 lignite production levels, and Texas 

lignite blending units were not permitted to exceed their 2010 reported share 

of sub-bituminous blending.

Transport Rule Remedy

Transport Rule Sensitivities and Additional Analysis