GHG Summary Report

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):371,239.3
CO2 equivalent emissions from supplier subparts LL-QQ (metric tons):
Biogenic CO2 emissions from facility subparts C-II, SS, and TT (metric tons):0
Cogeneration Unit Emissions Indicator:N
GHG Report Start Date:2020-01-01
GHG Report End Date:2020-12-31
Description of Changes to Calculation Methodology:
Plant Code Indicator:N
Primary NAICS Code:331110
Second Primary NAICS Code:

Parent Company Details:

Parent Company Name:US STEEL CORP
Address:600 Grant Street, Pittsburgh, PA 15219
Percent Ownership Interest:100

Subpart C: General Stationary Fuel Combustion

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	368,675.7 (Metric Tons)
Own Result?

Gas Name	Biogenic Carbon dioxide
Gas Quantity	0 (Metric Tons)
Own Result?

Gas Name	Methane
Gas Quantity	4.8 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0.757 (Metric Tons)
Own Result?

Unit Details:

Unit Name : CP-IP-COG1
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Common Pipe Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 140
Cumulative Maximum Rated Heat Input Capacity: 700

Emission Details:
Annual Biogenic CO2 Emissions: 0 (metric tons)
Annual Fossil fuel based CO2 Emissions: 200940.9 (metric tons)

Tier Fuel Details:

Fuel : Coke Oven Gas
Tier Name : Tier 2 (Equation C-2a)
Tier Methodology Start Date : 2020-01-01
Tier Methodology End Date : 2020-12-31
Frequency of HHV determinations : Monthly

Tier 2 Monthly HHV Details :

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
200940.9 (Metric Tons)	2.06 (Metric Tons)	0.429 (Metric Tons)	51.5 (Metric Tons)	127.8 (Metric Tons)

Unit Name : CP-IP-COG2
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Common Pipe Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 84.6
Cumulative Maximum Rated Heat Input Capacity: 405.6

Emission Details:
Annual Biogenic CO2 Emissions: 0 (metric tons)
Annual Fossil fuel based CO2 Emissions: 48190.1 (metric tons)

Tier Fuel Details:

January	February	March	April	May	June	July	August	September	October	November	December
N	N	N	N	N	N	N	N	N	N	N	N

Fuel Emission Details :

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
48190.1 (Metric Tons)	0.49 (Metric Tons)	0.103 (Metric Tons)	12.3 (Metric Tons)	30.7 (Metric Tons)

Unit Name : CP-IP-NG1
Unit Type : OCS (Other combustion source)
Unit Description :
Other Unit Name :

Common Pipe Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 140
Cumulative Maximum Rated Heat Input Capacity: 1105.6

Emission Details:
Annual Biogenic CO2 Emissions: 0 (metric tons)
Annual Fossil fuel based CO2 Emissions: 119544.7 (metric tons)

Tier Fuel Details:

Fuel : Natural Gas (Weighted U.S. Average)
Tier Name : Tier 2 (Equation C-2a)
Tier Methodology Start Date : 2020-01-01
Tier Methodology End Date : 2020-12-31
Frequency of HHV determinations : Semiannually

Tier 2 Monthly HHV Details :

January	February	March	April	May	June	July	August	September	October	November	December
Y	Y	Y	N	Y	Y	Y	N	Y	Y	Y	Y

Fuel Emission Details :

Total CO2 emissions	Total CH4 emissions	Total N2O emissions	Total CH4 emissions CO2e	Total N2O emissions CO2e
119544.7 (Metric Tons)	2.25 (Metric Tons)	0.225 (Metric Tons)	56.3 (Metric Tons)	67.1 (Metric Tons)

Subpart Q: Iron and Steel Production

CEMS Monitoring Location (CML) Details

Gas Information Details

Gas Name	Carbon Dioxide
Gas Quantity	2,216.3 (Metric Tons)
Own Result?

Gas Name	Biogenic Carbon dioxide
Gas Quantity	0 (Metric Tons)
Own Result?

Gas Name	Methane
Gas Quantity	0.02 (Metric Tons)
Own Result?

Gas Name	Nitrous Oxide
Gas Quantity	0.004 (Metric Tons)
Own Result?

The values below are total values for units where the CO₂ emissions were calculated using the mass balance methodology
Annual mass of fuel consumed: ()
Average carbon content of fuels: ()
Annual mass of non-fuels consumed: ()
Average carbon content of non-fuels: ()
Annual mass of products and byproducts produced: ()
Average carbon content of byproducts: ()

No Cems Unit Details:

Unit Name: IP-COGF-1
Unit Description:
Unit Type: Flare

Type of flare: Unassisted
Flare service type: Unit flare
Emissions Details

CO2 Emissions Calculation Method: 98.253(b)(1)(iii) - Equation Y-3 Start-up, Shutdown, Malfunction

Name	Value	Own Result?
CO2Emissions	6.7 (Metric Tons)	Y

Name	Value	Own Result?
CH4Emissions	0.00 (Metric Tons)	Y

Name	Value	Own Result?
N2OEmissions	0.000 (Metric Tons)	Y

Total number of start-up, shutdown, or malfunction (SSM) events exceeding 500,000 scf/day: 0

Unit Name: IP-COGF-2
Unit Description:
Unit Type: Flare

Type of flare: Unassisted
Flare service type: Unit flare
Emissions Details

CO2 Emissions Calculation Method: 98.253(b)(1)(iii) - Equation Y-3 Start-up, Shutdown, Malfunction

Name	Value	Own Result?
CO2Emissions	204.1 (Metric Tons)	Y

Name	Value	Own Result?
CH4Emissions	0.00 (Metric Tons)	Y

Name	Value	Own Result?
N2OEmissions	0.000 (Metric Tons)	Y

Total number of start-up, shutdown, or malfunction (SSM) events exceeding 500,000 scf/day: 0

Unit Name: IP-COGF-3
Unit Description:
Unit Type: Flare

Type of flare: Unassisted
Flare service type: Unit flare
Emissions Details

CO2 Emissions Calculation Method: 98.253(b)(1)(iii) - Equation Y-3 Start-up, Shutdown, Malfunction

Name	Value	Own Result?
CO2Emissions	35.5 (Metric Tons)	Y

Name	Value	Own Result?
CH4Emissions	0.00 (Metric Tons)	Y

Name	Value	Own Result?
N2OEmissions	0.000 (Metric Tons)	Y

Total number of start-up, shutdown, or malfunction (SSM) events exceeding 500,000 scf/day: 0

Unit Name: IP-COGF-4
Unit Description:
Unit Type: Flare

Type of flare: Unassisted
Flare service type: Unit flare
Emissions Details

CO2 Emissions Calculation Method: 98.253(b)(1)(iii) - Equation Y-3 Start-up, Shutdown, Malfunction

Name	Value	Own Result?
CO2Emissions	1970.0 (Metric Tons)	Y

Name	Value	Own Result?
CH4Emissions	0.02 (Metric Tons)	Y

Name	Value	Own Result?
N2OEmissions	0.004 (Metric Tons)	Y

Total number of start-up, shutdown, or malfunction (SSM) events exceeding 500,000 scf/day: 0

Flares