Appendix A-1: Background Data: LMOP July 2012 

Table contains data from landfills in LMOP's database as of July 2012.

Field Name

LMOP Landfill ID

LMOP Landfill Name

LMOP Landfill Alias

LMOP Physical Address

LMOP City

LMOP County

LMOP State

LMOP Zip Code

LMOP Latitude

LMOP Longitude

LMOP Ownership Type

LMOP Landfill Owner Organization(s)

LMOP Landfill Operator Organization

LMOP Year Landfill Opened

LMOP Landfill Closure Year

LMOP Current Landfill Status

LMOP Design Landfill Area (acres)

LMOP Current Landfill Area (acres)

LMOP Total Area (acres)

LMOP Design Landfill Depth (feet)

LMOP Current Landfill Depth (feet)

LMOP Landfill Design Capacity (tons)

LMOP Waste in Place (tons)

LMOP Waste in Place Year

LMOP WIP % MSW

LMOP Annual Waste Acceptance Rate (tons per year)

LMOP Annual Waste Acceptance Year

LMOP Annual Acceptance % MSW

LMOP Non-MSW Waste Description

LMOP WIP % C&D

LMOP WIP % Industrial

LMOP WIP % Other

LMOP WIP % Other Description

LMOP LFG Generated (mmscfd)

LMOP Field Testing

LMOP Modeling

LMOP Field Testing/Modeling Description
LMOP LFG Collection System In Place?

LMOP LFG Collected (mmscfd)

LMOP Percent Methane

LMOP Flares in Place?

LMOP Number of Flares

LMOP LFG Flared (mmscfd)

LMOP Reason for Flare Use

LMOP Flare System Comments
und Data: LMOP July 2012 

m landfills in LMOP's database as of July 2012.

Description

Unique identifying number for each landfill

Landfill name

Alternate landfill name

Physical address of landfill

City landfill is located in or near

County landfill is located in

State landfill is located in

Zip code for the landfill

Latitude coordinate (decimal) for the landfill

Longitude coordinate (decimal) for the landfill

Indicates if landfill is publicly owned, privately owned, or co-owned by public and private 

entities

Organization that owns the landfill

Organization that operates the landfill

Year landfill opened or began accepting waste (YYYY)

Year landfill stopped accepting waste or is expected to stop accepting waste or year landfill 

closed or is expected to close (YYYY)

Open/Closed status of landfill

Design waste mass area of landfill in acres

Current waste mass area of landfill in acres

Total area of land the landfill is located on

Design waste mass depth of landfill (maximum or average) in feet

Current waste mass depth of landfill (maximum or average) in feet

Waste design capacity of landfill in short tons

Waste-in-place at the landfill in short tons

Year corresponding to the waste-in-place at the landfill (YYYY)

Percent of the waste-in-place that is municipal solid waste

Annual acceptance rate of waste at the landfill in short tons per year

Year corresponding to the annual waste acceptance rate at the landfill (YYYY)

Percent of the annual waste acceptance rate that is municipal solid waste

Description of the waste-in-place that is not municipal solid waste

Percent of the waste-in-place that is construction & demolition waste

Percent of the waste-in-place that is industrial waste

Percent of the waste-in-place that is something other than MSW, C&D, or industrial waste

Description of the "other" type of waste

Estimated amount of landfill gas generated by landfill in million standard cubic feet per day

Was landfill gas generated estimate determined by field testing?

Was landfill gas generated estimate determined by modeling?

Description of field testing or modeling that determined landfill gas generated estimate
Is there a landfill gas collection system in place? 'Yes' for an active GCCS; 'No' if landfill has no 

gas collection system, is passively venting/flaring, or has perimeter gas wells.

Amount of landfill gas being collected in million standard cubic feet per day

Percent of landfill gas that is methane (typically 40-50%)

Is there one or more flares in place at the landfill?

Number of flares in place at the landfill

Amount of landfill gas flared (if project is operational, amount of landfill gas flared in back-up 

flare(s)) in million standard cubic feet per day

Description of the reason the landfill is flaring landfill gas

Comments regarding the flaring (and gas collection) system at the landfill
Appendix A-2: Background Data: GHGRP 2010

Field Name Description

FACILITY_ID GHGRP Identifier for landfill

FACILITY_NAME Landfill Name

EST YEAR LANDFILL CLOSURE

Year landfill stopped accepting waste or is 

expected to stop accepting waste or year landfill 

closed or is expected to close (YYYY)

LANDFILL OPEN Open/Closed status of landfill

LANDFILL CAPACITY CONVERTED 

(short tons) Waste design capacity of landfill in short tons

LMOP Waste in Place (tons)

Combined Waste-in-place at the landfill in short 

tons from multiple consolidated landfills in LMOP 

database

LMOP Waste in Place Year Waste-in-Place Year

LMOP Annual Waste Acceptance 

Rate (tons per year)

Combined Annual acceptance rate of waste at the 

landfill in short tons per year from multiple 

consolidated landfills in LMOP database

LMOP Annual Waste Acceptance 

Year

Year corresponding to the annual waste 

acceptance rate at the landfill (YYYY)

Open year

Year landfill opened or began accepting waste 

(YYYY)

Table contains data from landfills reporting to GHGRP that were not in LMOP's database 

as of July 2012. 
Appendix A-3: Background Data: Consolidated List - LMOP GHGRP and Survey

Field Name Description

Landfill Name Landfill name

Landfill ID # Unique identifying number for each landfill

Landfill Owner Type (Public/Private)

Indicates if landfill is publicly owned, privately 

owned, or co-owned by public and private 

entities

Landfill Owner Organization Organization that owns the landfill

Current Landfill Status Open/Closed status of landfill

Landfill Design Capacity (tons) Waste design capacity of landfill in short tons

LF Footprint (Acres)

Footprint of landfill in acres as reported in 

survey

Designed Landfill Area (acres) Design waste mass area of landfill in acres

Current Landfill Area (acres) Current waste mass area of landfill in acres

Total Area (acres) Total area of land the landfill is located on

Waste Depth (Ft) Depth of waste (feet) as reported in survey

Current Landfill Depth (feet)

Current waste mass depth of landfill 

(maximum or average) in feet

Designed Landfill Depth (feet)

Design waste mass depth of landfill (maximum 

or average) in feet

Date of First Waste Received Year first waste received as reported in survey

Year Landfill Opened

Year landfill opened or began accepting waste 

(YYYY)

Year of Final Waste Received Year final waste received as reported in survey

Landfill Closure Year

Year landfill stopped accepting waste or is 

expected to stop accepting waste or year 

landfill closed or is expected to close (YYYY)

Waste in Place (tons) Waste-in-place at the landfill in short tons

Waste in Place Year

Year corresponding to the waste-in-place at 

the landfill (YYYY)

Annual Waste Acceptance Rate (tons per year)

Annual acceptance rate of waste at the landfill 

in short tons per year

Table contains a consolidated list of 2,353 landfills based on LMOP July 2012 data, GHGRP 2010 data 

and the voluntary landfill survey (2010) data. These data were used to develop inventory for analysis 

of costs and emission impacts.
Annual Waste Acceptance Year

Year corresponding to the annual waste 

acceptance rate at the landfill (YYYY)

Veolia WAR

Annual acceptance rate of waste at the landfill 

in short tons per year reported by Veolia in 

survey (most recent year of data from 

historical waste acceptance)

Landfill City City landfill is located in or near

Landfill State State landfill is located in

Annual Precipitation (Inches)

Precipitation received in county landfill is 

located in

Landfill County County landfill is located in

Landfill Name (survey) Name of landfill on voluntary survey

Appendix A-4: Background Data: LMOP GCCS Crosswalk

Field Name Description

NSPS/EG Dataset 

Landfill_ID Identifier from landfill inventory table

Landfill_Name Landfill Name

Landfill_City Landfill City

Landfill_County Landfill County

Landfill_State Landfill State

LMOP Landfill ID

Identifier from LMOP dataset (if blank, landfill is a model 

landfill and is not in the LMOP dataset)

LFG Collection 

System In Place?

LMOP database status of whether a gas collection and 

control system is installed at landfill

No of Operational 

LFG Energy

Projects

LMOP database tracking of number of landfill gas energy 

recovery projects installed at landfill

Table identifies which landfills in the NSPS/EG dataset report a GCCS installed 

according to the December 2013 LMOP database and which of those have 

energy projects installed.
Appendix A-5: Background Data: Electricity_Rates

Field Name Description

State State associated with rate

ElectricityPurchase

Average Rate in state or territory used to approximate 

buyback rates for states without wholesale price data, 2009 

$/kWh

ElectricityBuyback

Average Rate in state or territory used to estimate revenue 

for LFG energy projects, 2009 $/kWh

Table identifies which landfills in the NSPS/EG dataset report a GCCS installed 

according to the December 2013 LMOP database and which of those have 

energy projects installed.
Appendix A-6: Field Mapping Inventory_Landfills

Field Name

FRS_ID

Landfill_ID

Landfill_Name

Landfill_City

Landfill_County

Landfill_State

Landfill Address

Landfill Latitude

Landfill Longitude

Landfill_Year_Opened

Landfill_Closure_Year

Landfill_Current_Status

Landfill_Designed_Area

Landfill_Current_Area

Landfill_Designed_Depth

Landfill_Current_Depth

Landfill_Waste_Depth

Landfill_Design_Cap_yds

Landfill_Design_Cap_tons

Table contains master list of existing landfills that accepted waste after 1987 and before 2012 that had sufficient data 

available to model LFG generation.
g Inventory_Landfills

Description

FRS ID assigned for landfills that exceed design capacity threshold of 2.5 million Mg

ID from LMOP Landfill and LFG Energy Project Database, 2012.

Landfill Name

City landfill is located in or near

County landfill is located in

State landfill is located in

Physical address of landfill

Latitude coordinate (decimal) for the landfill

Longitude coordinate (decimal) for the landfill

Year Landfill Opened

Landfill Closure Year

Current Landfill Status

Designed Landfill Area (acres)

Current Landfill Area (acres)

Designed Landfill Depth (feet)

Current Landfill Depth (feet)

Waste Depth (feet)

Design Capacity (cubic yards)

Landfill Design Capacity (tons)

existing landfills that accepted waste after 1987 and before 2012 that had sufficient data 
Appendix A-7: Field Mapping Inventory_Model Landfills

Field Name

Landfill_ID Public

Landfill_Name

Landfill_City

Landfill_County

Landfill_State

Landfill_Year_Opened

Landfill_Closure_Year

Landfill_Current_Status

Landfill_Designed_Area

Landfill_Current_Area

Landfill_Designed_Depth

Landfill_Current_Depth

Landfill_Waste_Depth

Landfill_Design_Cap_yds

Landfill_Design_Cap_tons

Landfill_WIP

Landfill_WIP_Year

Landfill_Ann_WAR

Landfill_Ann_WAR_Year

Table contains master list of model landfills expected to open after 2010 and before 2014 based on recently opened 

landfills in the Inventory_Landfill table. These landfills in addition to the landfills in the Inventory_Landfill table are used to 

estimate the preliminary impacts on any changes to regulations for existing landfills.
g Inventory_Model Landfills

Description

ID from LMOP Landfill and LFG Energy Project Database, 2012.

Landfill Name

Surrogate city for estimating precipitation

Surrogate county for estimating precipitation

Surrogate state for estimating precipitation

Year Landfill Opened

Landfill Closure Year

Current Landfill Status

Designed Landfill Area (acres)

Current Landfill Area (acres)

Designed Landfill Depth (feet)

Current Landfill Depth (feet)

Waste Depth (feet)

Design Capacity (cubic yards)

Landfill Design Capacity (tons)

Waste in Place (tons)

Waste in Place Year

Annual Waste Acceptance Rate (tons per year)

Annual Waste Acceptance Year

model landfills expected to open after 2010 and before 2014 based on recently opened 

dfill table. These landfills in addition to the landfills in the Inventory_Landfill table are used to 

acts on any changes to regulations for existing landfills.
Appendix A-8: Field Mapping Calculated Inputs_Annual Waste through 2037-ANPRM Existing

Field Name

Landfill_ID Public

Annual_WAR_Year

Annual_WAR

Annual_WIP

Annual_Acreage

Table contains estimated annual waste acceptance rates and waste-in-place data based on inventory characteristics. These d

are used in modeling emissions. Since equipment was sized based on a 15-year lifetime, waste input date through 2037 are 

presented to estimate gas flows over a 15-year lifetime for a project commencing operation in 2023.
Field Mapping Calculated Inputs_Annual Waste through 2037-ANPRM Existing

Description

Identifier from landfill inventory table

Year of waste acceptance, if year does not appear for landfill has closed or not yet opened

Annual Waste Acceptance Rate (tons per year)

Annual Waste-in-Place (tons)

Acreage in year

estimated annual waste acceptance rates and waste-in-place data based on inventory characteristics. These data 

deling emissions. Since equipment was sized based on a 15-year lifetime, waste input date through 2037 are 

stimate gas flows over a 15-year lifetime for a project commencing operation in 2023.
Appendix A-9: LOOKUP_Option Runs

Field Name Description

Run Run identifier

Design_Capacity_Cu

toff Design Capacity threshold, megagrams

NMOC_Cutoff Emission threshold, megagram/yr NMOC

Initial_Lag_Time

years to install system after emission threshold is 

exceeded

Expansion_Lag_Tim

e years to expand system

Interest_Rate interest rate for annualizing capital costs

This table summarizes the attributes of each preliminary control option 

analyzed and discussed in the ANPRM.
Appendix A-10: Output_Gas Flow 2014 to 2037 ANPRM Existing

Field Name

RunID

Landfill_ID Public

Annual_Gas_Year

ProjectStartYear

ProjectEndYear

Annual_Wells

Annual_Acreage

FlagExpansionYear

Annual_LFG_ft3_AP42

Annual_LFG_ft3_NSPS

Annual_Methane_ft3_NSPS

Annual_NMOC_NSPS

Annual_Collected_NMOC_NSPS

Annual_Collected_LFG_NSPS

Annual_Methane_ft3_AP42

Annual_NMOC_AP42

Annual_Collected_NMOC_AP42

Annual_Collected_LFG_AP42

Max_Annual_LFG_NSPS

Max_Annual_NMOC_NSPS

15yr_Max_LFG_ft3_AP42

EngineMultiplier

Next15yrLow_EngineMultiplier

EnginesOperated

This table includes the gas generated and collected quantities on an annual basis, using different modeling parameters. Thes

of installation and expansion of controls as well as to estimate the reductions and size of any collection and control equipmen

based on a 15-year lifetime, gas flows through 2037 are presented to accommodate estimate a 15-year lifetime for a project 
4 to 2037 ANPRM Existing

Description

See LOOKUP_Options Runs for Index of option descriptions

Landfill Identifier

Year associated with gas collection rates, based on GCCS equipment installation and expansion schedule of each option

First year GCCS is installed

Last year of GCCS operation

Number of Wells in Annual_Gas_Year

Acreage of Wellfield in Annual_Gas_Year

Time lapse (years) since the most recent wellfield installation or expansion

LFG generated in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, ft3/yr

LFG generated in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, ft3/yr

Methane generated in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, ft3/yr

NMOC generated in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, Mg/yr

NMOC collected in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, Mg/yr

LFG collected in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, Mg/yr

Methane generated in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, ft3/yr

NMOC generated in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, Mg/yr

NMOC collected in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, Mg/yr

LFG collected in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, Mg/yr

Maximum annual LFG, used to determine if the landfill exceeds an option threshold. ft3/yr

Maximum annual NMOC, used to determine if the landfill exceeds an option threshold, Mg/yr

Maximum LFG collected over 15-year time frame, with AP-42 Defaults for k, Lo, and NMOC, ft3/yr. Used to size equipment.

Number of engines estimated per year based on supply of 195 million ft3 per year per engine

Minimum number of engines required over the next 15 years. Used to ensure that engines are only modeled 

when there is enough gas to run the engine for 15 years.

Number of engines installed, based on minimum supply of 195 million ft3 per year per engine over 15 year period.

nd collected quantities on an annual basis, using different modeling parameters. These data were used to assess the timing 

ls as well as to estimate the reductions and size of any collection and control equipment needed. Since equipment was sized 

through 2037 are presented to accommodate estimate a 15-year lifetime for a project commencing operation in 2023.
le of each option

ed to size equipment.

 year period.
Appendix A-11: Output_Costs All Options 2014 to 2023 ANPRM Existing

Field Name Description

RunID See LOOKUP_Options Runs for Index of option descriptions

Landfill_ID Public Landfill Identifier

CostYear

Year annualized costs apply, based on GCCS equipment installation and expansion 

schedule of each option

Capital_Engine Annualized capital of engine if recovery project present, from Eq. 9 ($2012)

Capital_Flare Annualized capital of flare, from Eq. 5 ($2012)

Capital_Installation Annualized installation (mobilization) cost of drill rig, from Eq. 8 ($2012)

Capital_Well Annualized capital of wells, from Eq. 6 ($2012)

Capital_WellHead Annualized capital of wellheads, from Eq. 7 ($2012)

OM_Electricity Annual electricity cost for blowers, from Eq. 12 ($2012)

OM_Engine Annual O&M cost for engine if recovery project present, from Eq. 13 ($2012)

OM_Flare Annual O&M cost for flare, from Eq. 10 ($2012)

OM_Well Annual O&M cost for well, from Eq. 11 ($2012)

Revenue_Engine Annual revenue from electricity project, if engine is installed, from Eq. 14 ($2012)

Net Cost Sum of all annualized capital and O&M costs minus any revenue ($2012)

This table includes the total annualized capital, O&M costs, and revenue, for each option during the period 

of 2014 to 2023. Incremental emission reductions were calculated by subracting the net cost associated 

with the current rule requirements (option 1)
Appendix A-12: Output_Emission_Reductions All Options 2014-2023 ANPRM Existing

Field Name Description

RunID

See LOOKUP_Options Runs for Index of option 

descriptions

Landfill_ID Public Landfill Identifier

Landfill_Closure_Ye

ar Year landfill closed

Annual_Gas_Year

Year annualized reductions occur, based on GCCS 

equipment installation and expansion schedule of 

each option

Annual_NMOC_Mg Annual NMOC emission reductions, Mg/yr

Annual_LFG_Mg_C

O2e

Annual Methane emission reductions, Mg/yr CO2e 

(based on GWP of 25)

Annual_LFG_Mg_M

ethane Annual Methane emission reductions, Mg/yr

This table includes the annual emisison reductions (total) for each 

option during the period of 2014 to 2023. Incremental emission 

reductions were calculated by subracting the reductions associated with 

the current rule requirements (option 1)
Appendix A-13: Output_Uncontrolled Potential Emissions - ANPRM Existing

Field Name Description

Landfill_ID Public Landfill Identifier

Annual_Gas_Year Year of potential emissions

SumOfAnnual_LFG_AP42 potential LFG emissions ft^3 per year

Mg_NMOC_AP42 potential NMOC emissions Mg per year

SumOfAnnual_Methane_AP42 potential methane emissions ft^3 per year

Methane Mg AP42 CO2e

potential methane emissions Mg per year CO2e 

(GWP = 25)

Methane Mg AP42 potential methane emissions Mg per year

This table includes the estimated emissions from modeled gas generation rates for all 

landfills, not just the landfills expected to control under various options under 

consideration.
Appendix B-1: Field Mapping Inventory_Model Landfills

Field Name

Landfill_ID Public

Landfill_Name

Landfill_City

Landfill_County

Landfill_State

Landfill_Year_Opened

Landfill_Closure_Year

Landfill_Current_Status

Landfill_Designed_Area

Landfill_Current_Area

Landfill_Designed_Depth

Landfill_Current_Depth

Landfill_Waste_Depth

Landfill_Design_Cap_yds

Landfill_Design_Cap_tons

Landfill_WIP

Landfill_WIP_Year

Landfill_Ann_WAR

Landfill_Ann_WAR_Year

Table contains master list of model landfills expected to open between 2014 and 2018 based on recently opened landfills in 

the Inventory_Landfill table. Used to estimate impacts of the proposed new subpart XXX.
g Inventory_Model Landfills

Description

ID from LMOP Landfill and LFG Energy Project Database, 2012.

Landfill Name

Surrogate city for estimating precipitation

Surrogate county for estimating precipitation

Surrogate state for estimating precipitation

Year Landfill Opened

Landfill Closure Year

Current Landfill Status

Designed Landfill Area (acres)

Current Landfill Area (acres)

Designed Landfill Depth (feet)

Current Landfill Depth (feet)

Waste Depth (feet)

Design Capacity (cubic yards)

Landfill Design Capacity (tons)

Waste in Place (tons)

Waste in Place Year

Annual Waste Acceptance Rate (tons per year)

Annual Waste Acceptance Year

model landfills expected to open between 2014 and 2018 based on recently opened landfills in 

Used to estimate impacts of the proposed new subpart XXX.
Appendix B-2: Field Mapping Calculated Inputs_Annual Waste through 2037-Proposed XXX

Field Name

Landfill_ID Public

Annual_WAR_Year

Annual_WAR

Annual_WIP

Annual_Acreage

Table contains estimated annual waste acceptance rates and waste-in-place data based on inventory characteristics. These d

are used in modeling emissions. Since equipment was sized based on a 15-year lifetime, waste input date through 2037 are 

presented to estimate gas flows over a 15-year lifetime for a project commencing operation in 2023.
Field Mapping Calculated Inputs_Annual Waste through 2037-Proposed XXX

Description

Identifier from landfill inventory table

Year of waste acceptance, if year does not appear for landfill has closed or not yet opened

Annual Waste Acceptance Rate (tons per year)

Annual Waste-in-Place (tons)

Acreage in year

estimated annual waste acceptance rates and waste-in-place data based on inventory characteristics. These data 

deling emissions. Since equipment was sized based on a 15-year lifetime, waste input date through 2037 are 

stimate gas flows over a 15-year lifetime for a project commencing operation in 2023.
Appendix B-3: LOOKUP_Option Runs

Field Name Description

Run Run identifier

Design_Capacity_Cu

toff Design Capacity threshold, megagrams

NMOC_Cutoff Emission threshold, megagram/yr NMOC

Initial_Lag_Time

years to install system after emission threshold is 

exceeded

Expansion_Lag_Tim

e years to expand system

Interest_Rate interest rate for annualizing capital costs

This table summarizes the attributes of each control option analyzed for 

proposed subpart XXX.
Appendix B-4: Output_Gas Flow 2014 to 2037 Proposed XXX

Field Name

RunID

Landfill_ID Public

Annual_Gas_Year

ProjectStartYear

ProjectEndYear

Annual_Wells

Annual_Acreage

FlagExpansionYear

Annual_LFG_ft3_AP42

Annual_LFG_ft3_NSPS

Annual_Methane_ft3_NSPS

Annual_NMOC_NSPS

Annual_Collected_NMOC_NSPS

Annual_Collected_LFG_NSPS

Annual_Methane_ft3_AP42

Annual_NMOC_AP42

Annual_Collected_NMOC_AP42

Annual_Collected_LFG_AP42

Max_Annual_LFG_NSPS

Max_Annual_NMOC_NSPS

15yr_Max_LFG_ft3_AP42

EngineMultiplier

Next15yrLow_EngineMultiplier

EnginesOperated

This table includes the gas generated and collected quantities on an annual basis, using different modeling parameters. Thes

of installation and expansion of controls as well as to estimate the reductions and size of any collection and control equipmen

based on a 15-year lifetime, waste input date through 2037 are presented to estimate gas flows over a 15-year lifetime for a 

2023.
 to 2037 Proposed XXX

Description

See LOOKUP_Options Runs for Index of option descriptions

Landfill Identifier

Year associated with gas collection rates, based on GCCS equipment installation and expansion schedule of each option

First year GCCS is installed

Last year of GCCS operation

Number of Wells in Annual_Gas_Year

Acreage of Wellfield in Annual_Gas_Year

Time lapse (years) since the most recent wellfield installation or expansion

LFG generated in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, ft3/yr

LFG generated in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, ft3/yr

Methane generated in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, ft3/yr

NMOC generated in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, Mg/yr

NMOC collected in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, Mg/yr

LFG collected in Annual_Gas_Year with Tier 1 Defaults for k and Lo and AP-42 Default for NMOC, Mg/yr

Methane generated in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, ft3/yr

NMOC generated in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, Mg/yr

NMOC collected in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, Mg/yr

LFG collected in Annual_Gas_Year with AP-42 Defaults for k, Lo, and NMOC, Mg/yr

Maximum annual LFG, used to determine if the landfill exceeds an option threshold. ft3/yr

Maximum annual NMOC, used to determine if the landfill exceeds an option threshold, Mg/yr

Maximum LFG collected over 15-year time frame, with AP-42 Defaults for k, Lo, and NMOC, ft3/yr. Used to size equipment.

Number of engines estimated per year based on supply of 195 million ft3 per year per engine

Minimum number of engines required over the next 15 years. Used to ensure that engines are only modeled 

when there is enough gas to run the engine for 15 years.

Number of engines installed, based on minimum supply of 195 million ft3 per year per engine over 15 year period.

nd collected quantities on an annual basis, using different modeling parameters. These data were used to assess the timing 

ls as well as to estimate the reductions and size of any collection and control equipment needed. Since equipment was sized 

ut date through 2037 are presented to estimate gas flows over a 15-year lifetime for a project commencing operation in 
le of each option

ed to size equipment.

 year period.
Appendix B-5: Output_Costs All Options 2014 to 2023 Proposed XXX

Field Name Description

RunID See LOOKUP_Options Runs for Index of option descriptions

Landfill_ID Public Landfill Identifier

CostYear

Year annualized costs apply, based on GCCS equipment installation and expansion 

schedule of each option

Capital_Engine Annualized capital of engine if recovery project present, from Eq. 9 ($2012)

Capital_Flare Annualized capital of flare, from Eq. 5 ($2012)

Capital_Installation Annualized installation (mobilization) cost of drill rig, from Eq. 8 ($2012)

Capital_Well Annualized capital of wells, from Eq. 6 ($2012)

Capital_WellHead Annualized capital of wellheads, from Eq. 7 ($2012)

OM_Electricity Annual electricity cost for blowers, from Eq. 12 ($2012)

OM_Engine Annual O&M cost for engine if recovery project present, from Eq. 13 ($2012)

OM_Flare Annual O&M cost for flare, from Eq. 10 ($2012)

OM_Well Annual O&M cost for well, from Eq. 11 ($2012)

Revenue_Engine Annual revenue from electricity project, if engine is installed, from Eq. 14 ($2012)

Net Cost Sum of all annualized capital and O&M costs minus any revenue ($2012)

This table includes the total annualized capital, O&M costs, and revenue, for each option during the period 

of 2014 to 2023. Incremental emission reductions were calculated by subracting the net cost associated 

with the current rule requirements (option 1)
Appendix B-6: Output_Emission_Reductions All Options 2014-2023 Proposed XXX

Field Name Description

RunID

See LOOKUP_Options Runs for Index of option 

descriptions

Landfill_ID Public Landfill Identifier

Landfill_Closure_Ye

ar Year landfill closed

Annual_Gas_Year

Year annualized reductions occur, based on GCCS 

equipment installation and expansion schedule of 

each option

Annual_NMOC_Mg Annual NMOC emission reductions, Mg/yr

Annual_LFG_Mg_C

O2e

Annual Methane emission reductions, Mg/yr CO2e 

(based on GWP of 25)

Annual_LFG_Mg_M

ethane Annual Methane emission reductions, Mg/yr

This table includes the annual emisison reductions (total) for each option during the 

period of 2014 to 2023. Incremental emission reductions were calculated by 

subracting the reductions associated with the current rule requirements (option 1)
Appendix B-7: Output_Uncontrolled Potential Emissions - Subpart XXX

Field Name Description

Landfill_ID Public Landfill Identifier

Annual_Gas_Year Year of potential emissions

SumOfAnnual_LFG_AP42 potential LFG emissions ft^3 per year

Mg_NMOC_AP42 potential NMOC emissions Mg per year

SumOfAnnual_Methane_AP42 potential methane emissions ft^3 per year

Methane Mg AP42 CO2e

potential methane emissions Mg per year CO2e 

(GWP = 25)

Methane Mg AP42 potential methane emissions Mg per year

This table includes the estimated emissions from modeled gas generation rates for all 

landfills, not just the landfills expected to control under various options under 

consideration.
Appendix B-8: Outputs 2023 GCCS Acreage Proposed XXX

Field Name Description

RunID

See LOOKUP_Options Runs for Index of option 

descriptions

Annual_Gas_Yea

r

Year associated with gas collection rates, based 

on GCCS equipment installation and expansion 

schedule of each option

Landfill_ID Public Landfill Identifier

Annual_Acreage acreage of wellfield in 2023

This table estimates the acreage for each controlled landfills in 

2023. This acreage was used to estimate testing and monitoring 

costs for each control option.