Facility Name:MP Mine Operations LLC
Facility Identifier:
Facility Reporting Year:2023
Facility Location:
Address: 67750 Bailey Road
City: Mountain Pass
State: CA
Postal Code: 92366

Facility Site Details:
CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):58,720.2
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:Y
GHG Report Start Date:2023-01-01
GHG Report End Date:2023-12-31
Description of Changes to Calculation Methodology:MP changed natural gas calculation methodologies to use equations 1b and 8b for CO2 and CH4/N2O, respectively, as MP data is available in mmBtu.
Plant Code Indicator:N
Primary NAICS Code:212290
Second Primary NAICS Code:213114

Parent Company Details:
Parent Company Name:MP MINE OPERATIONS LLC
Address:67750 Bailey Road, Mountain Pass,  CA 92366
Percent Ownership Interest:100

Subpart C: General Stationary Fuel Combustion

Gas Information Details

Gas NameCarbon Dioxide
Gas Quantity58,659.1 (Metric Tons)
Own Result?

Gas NameBiogenic Carbon dioxide
Gas Quantity0 (Metric Tons)
Own Result?

Gas NameMethane
Gas Quantity1.11 (Metric Tons)
Own Result?

Gas NameNitrous Oxide
Gas Quantity0.112 (Metric Tons)
Own Result?

Unit Details:
Unit Name : GP-2
Unit Description :
Small Unit Aggregation Details:
Use Ivt Indicator: Y
Highest Maximum Rated Heat Input Capacity: 1.5
Cumulative Maximum Rated Heat Input Capacity:

Emission Details:
Annual CO2 mass emissions from sorbent: 0 (Metric Tons)
Annual Biogenic CO2 Emissions: 0 (metric tons)
Annual Fossil fuel based CO2 Emissions: 0 (metric tons)

Tier Fuel Details:
Fuel : Propane
Tier Name : Tier 1 (Equation C-1)
Tier Methodology Start Date : 2023-01-01
Tier Methodology End Date : 2023-12-31

Fuel Emission Details :
Total CO2 emissionsTotal CH4 emissionsTotal N2O emissionsTotal CH4 emissions CO2eTotal N2O emissions CO2e
180.6 (Metric Tons) 0.01 (Metric Tons) 0.002 (Metric Tons) 0.2 (Metric Tons) 0.5 (Metric Tons)


Unit Name : CP-1
Unit Description :
Common Pipe Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 143
Cumulative Maximum Rated Heat Input Capacity: 496

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

Tier Fuel Details:
Fuel : Natural Gas (Weighted U.S. Average)
Tier Name : Tier 1 (Equation C-1b, natural gas billing in mmBtu)
Tier Methodology Start Date : 2023-01-01
Tier Methodology End Date : 2023-12-31

Fuel Emission Details :
Total CO2 emissionsTotal CH4 emissionsTotal N2O emissionsTotal CH4 emissions CO2eTotal N2O emissions CO2e
58478.5 (Metric Tons) 1.10 (Metric Tons) 0.110 (Metric Tons) 27.6 (Metric Tons) 32.8 (Metric Tons)


Unit Name : CP-2
Unit Description :
Common Pipe Details:
Use Ivt Indicator: Y
Maximum Rated Heat Input Capacity: 25
Cumulative Maximum Rated Heat Input Capacity: 35

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

Tier Fuel Details:
Fuel : Natural Gas (Weighted U.S. Average)
Tier Name : Tier 1 (Equation C-1b, natural gas billing in mmBtu)
Tier Methodology Start Date : 2023-01-01
Tier Methodology End Date : 2023-12-31

Fuel Emission Details :
Total CO2 emissionsTotal CH4 emissionsTotal N2O emissionsTotal CH4 emissions CO2eTotal N2O emissions CO2e
0 (Metric Tons) 0 (Metric Tons) 0 (Metric Tons) 0 (Metric Tons) 0 (Metric Tons)