**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 DescriptionLMOP 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**Appendix A-1: Background Data: LMOP July 2012 Table contains data from 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 estimateIs 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 Sy**  **stem 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

**Electricity Purchase** Average Rate in state or territory used to approximate

buyback rates for states without wholesale price data, 2009 $/kWh

**Electricity Buy** **back**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.**Appendix A-6: Field Mapping 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) Table contains master list of 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.**Appendix A-7: Field Mapping 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 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.**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 data 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.**Appendix A-8: 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 Table contains estimated annual waste acceptance rates and waste-in-place data based on inventory characteristics. These data 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.**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. These data were used to assess the timing of installation and expansion of controls as well as to estimate the reductions and size of any collection and control equipment needed. Since equipment was sized based on a 15-year lifetime, gas flows through 2037 are presented to accommodate estimate a 15-year lifetime for a project commencing operation in 2023.**Appendix A-10: Output_Gas Flow 2014 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. This table includes the gas generated and collected quantities on an annual basis, using different modeling parameters. These data were used to assess the timing of installation and expansion of controls as well as to estimate the reductions and size of any collection and control equipment needed. Since equipment was sized based on a 15-year lifetime, gas flows through 2037 are presented to accommodate estimate a 15-year lifetime for a project commencing operation in 2023.Year associated with gas collection rates, based on GCCS equipment installation and expansion schedule of each option

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 installed, based on minimum supply of 195 million ft3 per year per engine over 15 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_InstallationAnnualized 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_YearYear annualized reductions occur, based on GCCS

equipment installation and expansion schedule of each option

Annual_NMOC_MgAnnual 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.**Appendix B-1: Field Mapping 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 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.**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 data 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.**Appendix B-2: 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 Table contains estimated annual waste acceptance rates and waste-in-place data based on inventory characteristics. These data 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.**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. These data were used to assess the timing of installation and expansion of controls as well as to estimate the reductions and size of any collection and control equipment needed. 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.**Appendix B-4: Output_Gas Flow 2014 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. This table includes the gas generated and collected quantities on an annual basis, using different modeling parameters. These data were used to assess the timing of installation and expansion of controls as well as to estimate the reductions and size of any collection and control equipment needed. 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 inYear associated with gas collection rates, based on GCCS equipment installation and expansion schedule of each option

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 installed, based on minimum supply of 195 million ft3 per year per engine over 15 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_InstallationAnnualized 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_YearYear annualized reductions occur, based on GCCS

equipment installation and expansion schedule of each option

Annual_NMOC_MgAnnual 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 PublicLandfill Identifier

Annual_Acreageacreage 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.