Approved consolidated baseline methodology ACM0001. Consolidated baseline and monitoring methodology for landfill gas project activities

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1 Approved consolidated baseline methodolog ACM0001 Consolidated baseline and monitoring methodolog for landfill gas project activities I. SOURCE AND APPLICABILITY Sources This methodolog is based on elements from the following approved proposals for baseline methodologies: AM0002: Greenhouse Gas Emission Reductions through Landfill Gas Capture and Flaring where the Baseline is established b a Public Concession Contract (approved based on proposal NM0004-rev: Salvador da Bahia landfill gas project, whose project design document and baseline stud, monitoring and verification plans were developed b ICF Consulting (version 03, June 2003); AM0003: Simplified financial analsis for landfill gas capture projects (approved based on proposal NM0005: Nova Gerar landfill gas to energ project, whose project design document and baseline stud, monitoring and verification plans were developed b EcoSecurities Ltd. (version 14, Jul 2003) for the Carbon Finance Unit of the World Bank); AM0010: Landfill gas capture and electricit generation projects where landfill gas capture is not mandated b law (approved based on proposal NM0010-rev: Durban-landfill-gas-to-electricit project, whose project design document and baseline stud, monitoring and verification plans were developed b Prototpe Carbon Fund of the World Bank (April 2003); AM0011: Landfill gas recover with electricit generation and no capture or destruction of methane in the baseline scenario (approved based on proposal NM0021: Cerupt methodolog for landfill gas recover, whose project design document and baseline stud, monitoring and verification plans were developed b Onx (Jul 2003). For more information regarding the proposals and its considerations b the Executive Board please refer to the cases on < The methodolog also refers to the latest version of the following tools: 1 Tool for the demonstration and assessment of additionalit ; Tool to determine project emissions from flaring gases containing methane ; Tool to calculate baseline, project and/or leakage emissions from electricit consumption ; Tool to calculate project or leakage CO 2 emissions from fossil fuel combustion ; Combined tool to identif the baseline scenario and demonstrate additionalit ; Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site ; Tool to calculate the emission factor for an electricit sstem. Selected approach from paragraph 48 of the CDM modalities and procedures Emissions from a technolog that represents an economicall attractive course of action, taking into account barriers to investment. 1 Please refer to < 1/25

2 Applicabilit This methodolog is applicable to landfill gas capture project activities, where the baseline scenario is the partial or total atmospheric release of the gas and the project activities include situations such as: (a) (b) (c) The captured gas is flared; and/or The captured gas is used to produce energ (e.g. electricit/thermal energ). Emission reductions can be claimed for thermal energ generation, onl if the LFG displaces use of fossil fuel either in a boiler or in an air heater. For claiming emission reductions for other thermal energ equipment (e.g. kiln), project proponents ma submit a revision to this methodolog; The captured gas is used to suppl consumers through natural gas distribution network. If emissions reductions are claimed for displacing natural gas, project activities ma use approved methodolog AM0053. In addition, the applicabilit conditions included in the tools referred to above appl. II. BASELINE METHODOLOGY Project Boundar The project boundar is the site of the project activit where the gas is captured and destroed/used. If the electricit for project activit is sourced from grid or electricit generated b the LFG captured would have been generated b power generation sources connected to the grid, the project boundar shall include all the power generation sources connected to the grid to which the project activit is connected. If the electricit for project activit is from a captive generation source or electricit generated b the captured LFG would have been generated b a captive power plant, the captive power plant shall be included in the project boundar. 2/25

3 Table 1: Summar of gases and sources included in the project boundar, and justification/explanation where gases and sources are not included Baseline Project Activit Source Gas Included? Justification / Explanation Emissions from decomposition of waste at the CH 4 Yes The major source of emissions in the baseline N 2 O No N 2 O emissions are small compared to CH 4 emissions from landfills. Exclusion of this gas is conservative. landfill site CO 2 No CO 2 emissions from the decomposition of organic waste are not accounted Emissions from electricit consumption Emissions from thermal energ generation On-site fossil fuel consumption due to the project activit other than for electricit generation Emissions from on-site electricit CO 2 Yes Electricit ma be consumed from the grid or generated onsite/offsite in the baseline scenario CH 4 No Excluded for simplification. This is conservative. N 2 O No Excluded for simplification. This is conservative. CO 2 Yes If thermal energ generation is included in the project activit CH 4 No Excluded for simplification. This is conservative. N 2 O No Excluded for simplification. This is conservative. CO 2 Yes Ma be an important emission source CH 4 No Excluded for simplification. This emission source is assumed to be ver small. N 2 O No Excluded for simplification. This emission source is assumed to be ver small. CO 2 Yes Ma be an important emission source CH 4 No Excluded for simplification. This emission source is assumed to be ver small. use N 2 O No Excluded for simplification. This emission source is assumed to be ver small. Procedure for the selection of the most plausible baseline scenario Step 1: Identification of alternative scenarios Project participants should use Step 1 of the latest version of the Tool for the demonstration and assessment of additionalit, to identif all realistic and credible baseline alternatives. In doing so, relevant policies and regulations related to the management of landfill sites should be taken into account. Such policies or regulations ma include mandator landfill gas capture or destruction requirements because of safet issues or local environmental regulations. 2 Other policies could include local policies promoting productive use of landfill gas such as those for the production of renewable energ, or those that promote the processing of organic waste. In addition, the assessment of alternative scenarios should take into account local economic and technological circumstances. 2 The project developer must bear in mind the relevant clarifications on the treatment of national and/or sectoral policies and regulations in determining a baseline scenario as per Annex 3 to the Executive Board 22 nd meeting and an other forthcoming guidance from the Board on this subject. 3/25

4 National and/or sectoral policies and circumstances must be taken into account in the following was: In Sub-step 1b of the Tool for the demonstration and assessment of additionalit, the project developer must show that the project activit is not the onl alternative that is in compliance with all regulations (e.g. because it is required b law); Via the adjustment factor AF in the baseline emissions project participants must take into account that some of the methane generated in the baseline ma be captured and destroed to compl with regulations or contractual requirements; The project participants must monitor all relevant policies and circumstances at the beginning of each crediting period and adjust the baseline accordingl. Alternatives for the disposal/treatment of the waste in the absence of the project activit, i.e. the scenario relevant for estimating baseline methane emissions, to be analsed should include, inter alia: LFG1: The project activit (i.e. capture of landfill gas and its flaring and/or its use) undertaken without being registered as a CDM project activit; LFG2: Atmospheric release of the landfill gas or partial capture of landfill gas and destruction to compl with regulations or contractual requirements, or to address safet and odour concerns. If LFG is used for generation of electric or heat energ for export to a grid and/or to a nearb industr or used on-site, realistic and credible alternatives should also be separatel determined for: Power generation in the absence of the project activit; Heat generation in the absence of the project activit. For power generation, the realistic and credible alternative(s) ma include, inter alia: P1: Power generated from landfill gas undertaken without being registered as CDM project activit; P2: Existing or construction of a new on-site or off-site fossil fuel fired cogeneration plant; P3: Existing or construction of a new on-site or off-site renewable based cogeneration plant; P4: Existing or construction of a new on-site or off-site fossil fuel fired captive power plant; P5: Existing or construction of a new on-site or off-site renewable based captive power plant; P6: Existing and/or new grid-connected power plants. For heat generation, the realistic and credible alternative(s) ma include, inter alia: H1: Heat generated from landfill gas undertaken without being registered as CDM project activit; H2: Existing or Construction of a new on-site or off-site fossil fuel fired cogeneration plant; H3: Existing or Construction of a new on-site or off-site renewable based cogeneration plant; H4: Existing or new construction of on-site or off-site fossil fuel based boilers, air heaters or other heat generating equipment (e.g. kilns); H5: Existing or new construction of on-site or off-site renewable energ based boilers, air heaters or other heat generating equipment (e.g. kilns); H6: An other source such as district heat; and H7: Other heat generation technologies (e.g. heat pumps or solar energ). 4/25

5 Step 2: Identif the fuel for the baseline choice of energ source taking into account the national and/or sectoral policies as applicable Demonstrate that the identified baseline fuel is available in abundance in the host countr and there is no suppl constraint. In case of partial suppl constraints (seasonal suppl), the project participants ma consider an alternative fuel that result in lowest baseline emissions during the period of partial suppl. Detailed justification shall be provided for the selected baseline fuel. As a conservative approach, the lowest carbon intensive fuel such as natural gas through out the period ma be used. Note: Steps 3 and 4 shall be applied for each component of the baseline, i.e. baseline for waste treatment, electricit generation and heat generation. Step 3: Step 2 and/or Step 3 of the latest approved version of the Tool for demonstration and assessment of additionalit shall be used to assess which of these alternatives should be excluded from further consideration (e.g. alternatives facing prohibitive barriers or those clearl economicall unattractive). Step 4: Where more than one credible and plausible alternative remains, project participants shall, as a conservative assumption, use the alternative baseline scenario that results in the lowest baseline emissions as the most likel baseline scenario. The least emission alternative will be identified for each component of the baseline scenario. In assessing these scenarios, an regulator or contractual requirements should be taken into consideration. Note: The methodolog is onl applicable if: (a) The most plausible baseline scenario for the landfill gas is identified as either the atmospheric release of landfill gas or landfill gas is partiall captured and subsequentl flared (LFG2); (b) The most plausible baseline scenario for the energ component of the baseline scenario is one of the following scenarios described in Table 2 below. Table 2: Combinations of baseline options and scenarios applicable to this methodolog Scenario Baseline Description of situation Landfill gas Electricit Heat 1 LFG2 P4 or P6 H4 The atmospheric release of landfill gas or landfill gas is partiall captured and subsequentl flared. The electricit is obtained from an existing/new fossil based captive power plant or from the grid and heat from an existing/new fossil fuel based boiler, air heater or other heat generating equipment. As an alternative to the procedure given above the Combined tool to identif the baseline scenario and demonstrate additionalit could be used. Same additional guidance as provided above should be used. 5/25

6 Additionalit The additionalit of the project activit shall be demonstrated and assessed using the latest version of the Tool for the demonstration and assessment of additionalit agreed b the CDM Executive Board, which is available on the UNFCCC CDM website. 3 If the Combined tool to identif the baseline scenario and demonstrate additionalit is used for the selection of the most plausible baseline scenario this same tool should be used for the demonstration of additionalit. Baseline emissions BE ( MDproject, MDBL, ) GWPCH 4 + ELLFG, CEFelec, BL, + ETLFG, * CEFther, BL, = (1) BE = Baseline emissions in ear (tco 2 e) MD project, = The amount of methane that would have been destroed/combusted during the ear, in tonnes of methane (tch 4 ) in project scenario MD BL, = The amount of methane that would have been destroed/combusted during the ear in the absence of the project due to regulator and/or contractual requirement, in tonnes of methane (tch 4 ) GWP CH4 = Global Warming Potential value for methane for the first commitment period is 21 tco 2 e/tch 4 EL LFG, = Net quantit of electricit produced using LFG, which in the absence of the project activit would have been produced b power plants connected to the grid or b an onsite/off-site fossil fuel based captive power generation, during ear, in megawatt hours (MWh) CEF elec,bl, = CO 2 emissions intensit of the baseline source of electricit displaced, in tco 2 e/mwh This is estimated as per equation (9) below ET LFG, = The quantit of thermal energ produced utilizing the landfill gas, which in the absence of the project activit would have been produced from onsite/offsite fossil fuel fired boiler/air heater, during the ear in TJ CEF ther,bl, = CO 2 emissions intensit of the fuel used b boiler/air heater to generate thermal energ which is displaced b LFG based thermal energ generation, in tco 2 e/tj. This is estimated as per equation (10) below In the case where the MD BL, is given/defined in the regulation and/or contract as a quantit that quantit will be used. In situations where in the baseline LFG captured and destroed, for reasons other than regulation and/or contract, historic data on actual amount captured shall be used as MD BL,. In cases where regulator or contractual requirements do not specif MD BL, or no historic data exists for LFG captured and destroed an Adjustment Factor (AF) shall be used and justified, taking into account the project context. MD BL, = MDproject, AF (2) 3 Please refer to: < 6/25

7 Guidance on estimating AF: In cases where a specific sstem for collection and destruction of methane is mandated b regulator or contractual requirements or is undertaken for other reasons, the ratio of the destruction efficienc of the baseline sstem to the destruction efficienc of the sstem used in the project activit shall be used. The following procedure should be followed: Step 1: Estimation of the destruction efficienc of the sstem (a) In situations where the baseline specific sstem for collection and destruction of methane installed and operating prior to implementation of the project activit and measurements of the amount of methane that is destroed are available then the following equation will be used: ε = MD / MG (3) BL Hist Hist ε BL = Destruction efficienc of the baseline sstem (fraction) MD Hist = Amount of methane destroed historicall measured for the previous ear before the start of project activit (tch 4 ) MG Hist = Amount of methane generated historicall for the previous ear before the start of project activit, estimated using the actual amount of waste disposed in the landfill as per the latest version of the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site tch 4 ) While estimating ex ante methane emissions, that are generated in the landfill with latest version of the approved Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site the following guidance should be taken into account: In the tool, x will refer to the ear since the landfill started receiving wastes [x runs from the first ear of landfill operation (x=1) to the ear for which emissions are calculated (x=)]; Sampling to determine the different waste tpes is not necessar. The waste composition can be obtained from previous studies. (b) (c) In cases, where the baseline sstem for collection and destruction of methane is not installed prior to project implementation and/or measurements of the amount of methane that is destroed are not available then the destruction efficienc of the sstem mandated b regulator or contractual requirements (ε BL ) should be assumed to be equal to the theoretical efficienc of the specific sstem for collection and destruction of methane that is defined in the regulation or contract. In other cases, a procedure for estimating the amount of landfill gas that would be captured in absence of the project activit shall be provided in the CDM- PDD validated b the DOE. This procedure shall be used to estimate the MD Hist in equation 3 above to estimate the baseline destruction efficienc; In cases where a specific percentage of the generated amount of methane to be collected and destroed is specified in the contract or mandated b regulations, the efficienc of the baseline sstem (ε BL ) is equal to the defined specific percentage. 7/25

8 Step 2: Estimation of the destruction efficienc of the sstem used in the project activit Option 1: The destruction efficienc of the sstem used in the project activit is estimated once and remains fixed for the whole crediting period and will be estimated as follows: ε PR = MD MG project, 1 / PR,1 (4) ε PR = Destruction efficienc of the sstem used in the project activit that will remain fixed for the whole crediting period (fraction) MD project,1 = Amount of methane destroed b the project activit during the first ear of the project activit (tch 4 ) MG PR,1 = Amount of methane generated during the first ear of the project activit estimated using the actual amount of waste disposed in the landfill as per the latest version of the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site, see guidance in Step 1 (tch 4 ) Option 2: The destruction efficienc of the sstem used in the project activit is estimated ever ear as follows: ε PR, = project, / MD MG, PR (5) ε PR, = Destruction efficienc of the sstem used in the project activit for ear (fraction) MD project, = Amount of methane destroed b the project activit during the ear of the project activit (tch 4 ) MG PR, = Amount of methane generated during ear of the project activit estimated using the actual amount of waste disposed in the landfill as per the latest version of the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site, see further guidance in Step 1 (tch 4 ) Step 3: Estimation of the adjustment factor (AF) If Option 1 is used in Step 2 then: AF = ε / ε BL PR (6) If Option 2 is used in Step 2 then: AF = ε BL /ε PR, (7) AF = Adjustment factor for ear, this factor will be used in equation 2 in place of AF Project proponents should provide an ex ante estimate of emissions reductions, b projecting the future GHG emissions of the landfill as specified below. MD project, will be determined ex post b metering the actual quantit of methane captured and destroed once the project activit is operational. 8/25

9 The methane destroed b the project activit (MD project, ) during a ear is determined b monitoring the quantit of methane actuall flared and gas used to generate electricit and/or produce thermal energ and/or suppl to end users via natural gas distribution pipeline, if applicable, and the total quantit of methane captured. The sum of the quantities fed to the flare(s), to the power plant(s), to the boiler(s)/air heater(s)/heat generating equipment(s) and to the natural gas distribution network (estimated using equation 3) must be compared annuall with the total quantit of methane generated. The lowest value of the two must be adopted as MD project,. The following procedure applies when the total quantit of methane generated is the highest. The working hours of the energ plant(s) and the boiler(s)/air heater(s)/heat generating equipment(s) should be monitored and no emission reduction could be claimed for methane destruction in the energ plant or the boiler/air heater/heat generating equipment during non-operational hours. MD project, MD flared, + MDelectricit, + MDthermal, + MDPL, = (8) MD flared, = Quantit of methane destroed b flaring (tch 4 ) MD electricit, = Quantit of methane destroed b generation of electricit (tch 4 ) MD thermal, = Quantit of methane destroed for the generation of thermal energ (tch 4 ) MD PL, = Quantit of methane sent to the pipeline for feeding to the natural gas distribution network (tch 4 ) Right hand side of the equation (3) is sum over all the points of captured methane use in case the methane is flared in more than one flare, and/or used in more than one electricit generation source, and/or more than one thermal energ generator. The suppl to each point of methane destruction, through flaring or use for energ generation, shall be measured separatel. MD flared, { flare, CH 4, CH 4 flare, CH4 = LFG w D ) ( PE / GWP ) (9) LFG flare, = Quantit of landfill gas fed to the flare(s) during the ear measured in cubic meters (m 3 ) w CH4, = Average methane fraction of the landfill gas as measured 4 during the ear and expressed as a fraction (in m³ CH 4 / m³ LFG) D CH4 = Methane densit expressed in tonnes of methane per cubic meter of methane (tch 4 /m 3 CH 4 ) 5 PE flare, = Project emissions from flaring of the residual gas stream in ear (tco 2e ) determined following the procedure described in the Tool to determine project emissions from flaring gases containing Methane. If methane is flared through more than one flare, the PE flare, shall be determined for each flare using the tool 4 Methane fraction of the landfill gas and LFG flow have to be measured on same basis (either wet or dr). In case the Tool to determine project emissions from flaring gases containing Methane is used, follow the standard approaches to convert the flow on wet basis to dr basis. For example, refer to the procedures provided in the book Fundamentals of Classical Thermodnamics ; Gordon J. Van Wlen, Richard E. Sonntag and Claus Borgnakke; 4º Edition, 1994, John Wile & Sons, Inc. 5 At standard temperature and pressure (0 degree Celsius and 1,013 bar) the densit of methane is tch 4 /m 3 CH 4. 9/25

10 MD = LFG w D (10) electricit, electricit, CH 4, CH 4 MD electricit, LFG electricit, = Quantit of methane destroed b generation of electricit = Quantit of landfill gas fed into electricit generator MD = LFG w D (11) thermal, thermal, CH 4, CH 4 Where MD thermal, is the quantit of methane destroed for the generation of thermal energ and LFG thermal, is the quantit of landfill gas fed into the boiler/air heater/heat generating equipment. MD = LFG w D (12) PL, PL, CH 4, CH 4 Where LFG PL, is the quantit of landfill gas sent to pipeline for feeding to the natural gas distribution network. Ex ante estimation of the the amount of methane that would have been destroed/combusted during the ear, in tonnes of methane (MD project, ) The ex ante estimation of the the amount of methane that would have been destroed/combusted during the ear, in tonnes of methane (MD project, ) will be done with the latest version of the approved Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site, considering the following additional equation: MD project, = BE CH4,SWDS, /GWP CH4 (13) BE CH4,SWDS, = Methane generation from the landfill in the absence of the project activit at ear (tco 2 e), calculated as per the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site. The tool estimates methane generation adjusted for, using adjustment factor (f) an landfill gas in the baseline that would have been captured and destroed to compl with relevant regulations or contractual requirements, or to address safet and odor concerns. As this is alread accounted for in equation 2, f in the tool shall be assigned a value 0 Furthermore the following guidance should be taken into account: In the tool x will refer to the ear since the landfill started receiving wastes [x runs from the first ear of landfill operation (x=1) to the ear for which emissions are calculated (x=)]; Sampling to determine the different waste tpes is not necessar, the waste composition can be obtained from previous studies. The efficienc of the degassing sstem which will be installed in the project activit should be taken into account while estimating the ex-ante estimation. 10/25

11 Determination of CEF elec,bl, In case the baseline is electricit generated b an on-site/off-site fossil fuel fired captive power plant in the baseline, project proponents ma use a default value of 0.8 tco2/mwh or estimate the emission factor as follows: CEF = EFfuel,BL *3. ε.ncv 6 elec,bl, (14) gen,bl fuel,bl EF fuel,bl = Emission factor of baseline fossil fuel used, as identified in the baseline scenario identification procedure, expressed in tco 2 /mass of volume unit NCV fuel,bl = Net calorific value of fuel, as identified through the baseline identification procedure, in GJ per unit of volume or mass ε gen,bl = Efficienc of baseline power generation plant 3.6 = Equivalent of GJ energ in a MWh of electricit To estimate electricit generation efficienc, project participants ma use the highest value among the following three values as a conservative approach: (1) Measured efficienc prior to project implementation; (2) Measured efficienc during monitoring; (3) Data from manufacturer for efficienc at full load; (4) Default efficienc of 60%. In case the baseline is electricit generated b plants connected to the grid the emission factor should be calculated according to Tool to calculate the emission factor for an electricit sstem. Determination of CEF ther,bl, CEF therm, BL, = ε EF boiler / airheater fuel, BL NCV fuel, BL (15) ε boiler/air heater NCV fuel,bl EF fuel,bl = The energ efficienc of the boiler/air heater used in the absence of the project activit to generate the thermal energ = Net calorific value of fuel, as identified through the baseline identification procedure, used in the boiler/air heater to generate the thermal energ in the absence of the project activit in TJ per unit of volume or mass = Emission factor of the fuel, as identified through the baseline identification procedure, used in the boiler/air heater to generate the thermal energ in the absence of the project activit in tco2 / unit of volume or mass of the fuel 11/25

12 To estimate boiler efficienc, project participants ma choose between the following two options: Option A Use the highest value among the following three values as a conservative approach: (1) Measured efficienc prior to project implementation; (2) Measured efficienc during monitoring; (3) Manufacturer s information on the boiler efficienc. Option B Assume a boiler efficienc of 100% based on the net calorific values as a conservative approach. To estimate air heater efficienc, assume an air heater efficienc of 100% based on the net calorific value of the fuel used as a conservative approach. In determining the CO 2 emission factors (EF fuel ) of fuels, reliable local or national data should be used if available. Where such data is not available, IPCC default emission factors should be chosen in a conservative manner. PE = PEEC, + PEFC, j, (16) PE EC, = Emissions from consumption of electricit in the project case. The project emissions from electricit consumption (PE EC, ) will be calculated following the latest version of Tool to calculate baseline, project and/or leakage emissions from electricit consumption. If in the baseline a part of LFG was captured then the electricit quantit used in calculation is electricit used in project activit net of that consumed in the baseline PE FC,j, = Emissions from consumption of heat in the project case. The project emissions from fossil fuel combustion (PE FC,j, ) will be calculated following the latest version of Tool to calculate project or leakage CO 2 emissions from fossil fuel combustion. For this purpose, the processes j in the tool corresponds to all fossil fuel combustion in the landfill, as well as an other on-site fuel combustion for the purposes of the project activit. If in the baseline part of a LFG was captured then the heat quantit used in calculation is fossil fuel used in project activit net of that consumed in the baseline. Leakage No leakage effects need to be accounted under this methodolog. 12/25

13 Emission Reduction Emission reductions are calculated as follows: ER = BE PE (17) ER = Emission reductions in ear (tco 2 e/r) BE = Baseline emissions in ear (tco2e/r) PE = Project emissions in ear (tco 2 /r) Data and parameters not monitored Data/Parameter: Regulator requirements relating to landfill gas Data unit: -- Regulator requirements relating to landfill gas procedures (if an): An comment: Publicl available information of the host countr s regulator requirements relating to landfill gas. The information though recorded annuall, is used for changes to the adjustment factor (AF) or directl MD BL, at renewal of the credit period. Relevant regulations for LFG project activities shall be updated at renewal of each credit period. Changes to regulation should be converted to the amount of methane that would have been destroed/combusted during the ear in the absence of the project activit (MD BL, ). Project participants should explain how regulations are translated into that amount of gas. GWP CH4 Parameter: Data unit: tco 2 e/tch4 Global warming potential of CH 4 IPCC 21 for the first commitment period. Shall be updated according to an future procedures (if COP/MOP decisions. an): An comment: D CH4 Parameter: Data unit: tch 4 /m 3 CH 4 Methane Densit At standard temperature and pressure (0 degree Celsius and 1,013 bar) the procedures (if densit of methane is tch 4 /m 3 CH 4 an): An comment: 13/25

14 Parameter: Data unit: procedures (if an): An comment: BE CH4,SWDS, tco 2 e Methane generation from the landfill in the absence of the project activit at ear Calculated as per the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site As per the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site Used for ex ante estimation of the amount of methane that would have been destroed/combusted during the ear MD Hist Parameter: Data unit: tch 4 Amount of methane destroed historicall for the previous ear before the start of project activit. Project proponent procedures (if an): An comment: This parameter could be used for the estimation of AF MG Hist Parameter: Data unit: tch 4 Amount of methane generated historicall for the previous ear before the start of project activit Project proponents Estimated using the actual amount of waste disposed in the landfill as per the procedures (if latest version of the Tool to determine methane emissions avoided from an): disposal of waste at a solid waste disposal site An comment: This parameter could be used for the estimation of AF III. MONITORING METHODOLOGY The monitoring methodolog is based on direct measurement of the amount of landfill gas captured and destroed at the flare platform(s), the natural gas pipelines and the electricit generating/thermal energ unit(s) to determine the quantities as shown in Figure 1. The monitoring plan provides for continuous measurement of the quantit and qualit of LFG flared. The main variables that need to be determined are the quantit of methane actuall captured MD project,, quantit of methane flared (MD flared, ), the quantit of methane used to generate electricit (MD electricit, )/thermal energ (MD thermal, ), the quantit of methane sent to the pipeline to the natural gas distribution network (MD PL, ) and the quantit of methane generated (MD total, ). The methodolog also measures the energ generated b use of LFG (EL LFG,, ET LFG, ) and energ consumed b the project activit that is produced using fossil fuels. 14/25

15 F F PE flare FE Flare Landfill CH 4 T P Landfill gas (LFG) s: CH 4 = Fraction of CH 4 F T = Temperature P = Pressure F = Flow of LFG (m³) PE flare = Project emissions from flaring of the residual gas stream F F Figure 1: Monitoring Plan Power plant Pipe Boiler To determine these variables, the following parameters have to be monitored: The amount of landfill gas generated (in m³, using a continuous flow meter), where the total quantit (LFG total, ) as well as the quantities fed to the flare(s) (LFG flare, ), to the power plant(s) (LFG electricit, ), sent to pipeline for feeding to the natural gas distribution network (LFG PL, ), and to the boiler(s)/air heater(s)/heat generating equipment(s) (LFG thermal, ) are measured continuousl. In the case where LFG is just flared, one flow meter for each flare can be used provided that these meters used are calibrated periodicall b an officiall accredited entit; The fraction of methane in the landfill gas (w CH4, ) should be measured using the following guidance: o If the captured gas is flared, the fraction of methane in the landfill gas (w CH4, ) should be measured with a continuous analzer (unless a default value for flare efficienc is adopted as per the guidance given in the Tool to determine project emissions from flaring gases containing Methane ); o If the captured gas is used to produce energ or a default value for flare efficienc is adopted as per the guidance given in the Tool to determine project emissions from flaring gases containing Methane, the fraction of methane in the landfill gas (w CH4, ) can either be measured with a continuous analzer or, alternativel, conducting periodical measurements with a minimum of four quarterl measurements per ear. In case periodical measurements, the lower bound of the 95% confidence interval should be used to estimate baseline methane emissions to ensure conservativeness. The continuous methane analser should be the preferred option because the methane content of landfill gas captured can var b more than 20% during 15/25

16 a single da due to gas capture network conditions (dilution with air at wellheads, leakage on pipes, etc.); o In all cases, methane fraction of the landfill gas and LFG flow have to be measured on same basis (either wet or dr). In case the Tool to determine project emissions from flaring gases containing Methane is used, follow the standard approaches to convert the flow on wet basis to dr basis. For example, refer to the procedures provided in the book Fundamentals of Classical Thermodnamics ; Gordon J. Van Wlen, Richard E. Sonntag and Claus Borgnakke; 4º Edition, 1994, John Wile & Sons, Inc. The parameters used for determining the project emissions from flaring of the residual gas stream in ear (PE flare, ) should be monitored as per the Tool to determine project emissions from flaring gases containing methane ; Temperature (T) and pressure (p) of the landfill gas are required to determine the densit of methane in the landfill gas; The quantities of fossil fuels required to operate the landfill gas project, including the pumping equipment for the collection sstem and energ required to transport heat, should be monitored. In projects where LFG gas is captured in the baseline to either meet the regulation or for safet reason, fossil fuel used in the baseline too should be recorded; The quantit of electricit imported, in the baseline and the project situation, to meet the requirements of the project activit, if an; The quantit of electricit exported out of the project boundar, generated from landfill gas, if an; Relevant regulations for LFG project activities shall be monitored and updated at renewal of each credit period. Changes to regulation should be converted to the amount of methane that would have been destroed/combusted during the ear in the absence of the project activit (MD BL, ). Project participants should explain how regulations are translated into that amount of gas; The operating hours of the energ plant(s) and the boiler(s)/air heater(s)/heat generating equipment(s). The measurement equipment for gas qualit (humidit, particulate, etc.) is sensitive, so a strong QA/QC procedure for the calibration of this equipment is needed. Data and parameters monitored LFG total, Data unit: m 3 Total amount of landfill gas captured at Normal Temperature and Pressure Project participants Measured b a flow meter. Data to be aggregated monthl and earl. procedures (if an): Monitoring frequenc: Continuous Flow meters should be subject to a regular maintenance and testing regime to ensure accurac An comment: 16/25

17 LFG flare, Data unit: m 3 Amount of landfill gas flared at Normal Temperature and Pressure Project participants Measured b a flow meter. Data to be aggregated monthl and earl for each procedures (if an): flare. Monitoring frequenc: Continuous Flow meters should be subject to a regular maintenance and testing regime to ensure accurac An comment: LFG electricit, Data unit: m 3 Amount of landfill gas combusted in power plant at Normal Temperature and Pressure Project participants Measured b a flow meter. Data to be aggregated monthl and earl for each procedures (if an): power plant. Monitoring frequenc: Continuous Flow meters should be subject to a regular maintenance and testing regime to ensure accurac An comment: LFG thermal, Data unit: m 3 Amount of methane combusted in boiler/air heater/heat generating equipment at Normal Temperature and Pressure Project participants Measured b a flow meter. Data to be aggregated monthl and earl for each procedures (if an): boiler/air heater/heat generating equipment. Monitoring frequenc: Continuous Flow meters should be subject to a regular maintenance and testing regime to ensure accurac An comment: LFG PL, Data unit: m 3 Amount of landfill gas sent to Pipe Line at Normal Temperature and Pressure Project participants Measured b a flow meter. Data to be aggregated monthl and earl for each procedures (if an): flare. Monitoring frequenc: Continuous Flow meters should be subject to a regular maintenance and testing regime to ensure accurac. An comment: 17/25

18 PE flare, Data unit: tco 2e Project emissions from flaring of the residual gas stream in ear Calculated as per the Tool to determine project emissions from flaring gases containing Methane. As per the Tool to determine project emissions from flaring gases containing procedures (if an): Methane Monitoring frequenc: As per the Tool to determine project emissions from flaring gases containing Methane As per the Tool to determine project emissions from flaring gases containing Methane An comment: - Data unit: procedures (if an): Monitoring frequenc: w CH4 m³ CH 4 / m³ LFG Methane fraction in the landfill gas To be measured continuousl or periodicall b project participants using certified equipment. Shall be measured using equipment that can directl measure methane content in the landfill gas, estimation of methane content of landfill gas based on measurement of other constituents of the landfill gas such as CO 2 is not permitted. Preferabl measured b continuous gas qualit analser. Continuous or periodical The gas analser should be subject to a regular maintenance and testing regime to ensure accurac An comment: If the captured gas is flared, the fraction of methane in the landfill gas (w CH4, ) should be measured with a continuous analzer (unless a default value for flare efficienc is adopted as per the guidance given in the Tool to determine project emissions from flaring gases containing Methane ); If the captured gas is used to produce energ or a default value for flare efficienc is adopted as per the guidance given in the Tool to determine project emissions from flaring gases containing Methane, the fraction of methane in the landfill gas (w CH4, ) should be measured with a continuous analzer or, alternativel, conducting periodical measurements with a minimum of 4 quarterl measurements per ear. The lower bound of the 95% confidence interval obtained from the periodical measurements should be used to estimate baseline methane emissions to ensure conservativeness. 18/25

19 T Data unit: C Temperature of the landfill gas Project participants Measured to determine the densit of methane D CH4. procedures (if an): No separate monitoring of temperature is necessar when using flow meters that automaticall measure temperature and pressure, expressing LFG volumes in normalized cubic meters. Monitoring frequenc: An comment: Continuous Measuring instruments should be subject to a regular maintenance and testing regime in accordance to appropriate national/international standards. Data unit: procedures (if an): Monitoring frequenc: P Pa Pressure of the landfill gas Project participants Measured to determine the densit of methane D CH4. No separate monitoring of temperature is necessar when using flow meters that automaticall measure temperature and pressure, expressing LFG volumes in normalized cubic meters. Continuous Measuring instruments should be subject to a regular maintenance and testing regime in accordance to appropriate national/international standards. An comment: Data unit: procedures (if an): Monitoring frequenc: An comment: EL LFG MWh Net amount of electricit generated using LFG. Project participants Electricit meter Continuous Electricit meter will be subject to regular (in accordance with stipulation of the meter supplier) maintenance and testing to ensure accurac. Required to estimate the emission reductions from electricit generation from LFG, if credits are claimed. 19/25

20 Data unit: procedures (if an): Monitoring frequenc: An comment: Data unit: procedures (if an): Monitoring frequenc: An comment: Data unit: procedures (if an): Monitoring frequenc: An comment: ET LFG TJ Total amount of thermal energ generated using LFG Project participants -In case of steam meter: The enthalp of steam and feed water will be determined at measured temperature and pressure and the enthalp difference will be multiplied with quantit measured b steam meter. -In case of hot air: the temperature, pressure and mass flow rate will be measured. Continuous In case of monitoring of steam, it will be calibrated for pressure and temperature of steam at regular intervals. The meter shall be subject to regular maintenance and testing to ensure accurac. Required to estimate the emission reductions from thermal energ generation from LFG, if credits are claimed CEF elec,bl, tco 2 /MWh Carbon emission factor of electricit A default of 0.8 can be used if electricit in the baseline would have been produced using captive power plant. Else, equation 8 provides the estimation equation. In case the baseline source would have been grid, emission factor shall be estimated as described in Tool to calculate the emission factor for an electricit sstem. Annuall EF fuel,bl tco 2 /mass or volume CO 2 emission factor of fossil fuel. The source of data should be the following, in order of preference: project specific data, countr specific data or IPCC default values. As per guidance from the Board, IPCC default values should be used onl when countr or project specific data are not available or difficult to obtain. Annuall Fossil fuel that would have been used in the baseline captive power plant or thermal energ generation. 20/25

21 Data unit: procedures (if an): Monitoring frequenc: An comment: NCV fuel,bl GJ/mass or volume units of fuel Net calorific value of fossil fuel The source of data should be the following, in order of preference: project specific data, countr specific data or IPCC default values. As per guidance from the Board, IPCC default values should be used onl when countr or project specific data are not available or difficult to obtain. Annuall For fossil fuel that would have been used in the baseline for thermal energ generation and/or electricit generation ε gen, BL Data unit: -- Efficienc of the baseline captive power plant To estimate electricit generation efficienc, project participants ma use the procedures (if an): highest value among the following three values as a conservative approach: 1. Measured efficienc prior to project implementation; 2. Measured efficienc during monitoring; 3. Data from manufacturer for efficienc at full load; 4. Default efficienc of 60%. Monitoring frequenc: Annuall An comment: 21/25

22 ε boiler / airheater Data unit: -- Efficienc of the baseline boiler/air heater for producing thermal energ To estimate boiler efficienc, project participants ma choose between the procedures (if an): following two options: Option A Use the highest value among the following three values as a conservative approach: 1. Measured efficienc prior to project implementation; 2. Measured efficienc during monitoring; 3. Manufacturer s information on the boiler efficienc. Option B Assume a boiler efficienc of 100% based on the net calorific values as a conservative approach Monitoring frequenc: An comment: Data unit: procedures (if an): Monitoring frequenc: An comment: Data unit: procedures (if an): Monitoring frequenc: An comment: Annuall Operation of the energ plant Hours Operation of the energ plant Project participants Annuall This is monitored to ensure methane destruction is claimed for methane used in electricit plant when it is operational. Operation of the boiler/air heater/heat generating equipment Hours Operation of the boiler/air heater/heat generating equipment Project participants Annuall This is monitored to ensure methane destruction is claimed for methane used in boiler/air heater/heat generating equipment when it is operational. 22/25

23 PE EC, Data unit: tco 2 Project emissions from electricit consumption b the project activit during the ear Calculated as per the Tool to calculate baseline, project and/or leakage emissions from electricit consumption. As per the Tool to calculate baseline, project and/or leakage emissions from procedures (if an): electricit consumption. Monitoring frequenc: As per the Tool to calculate baseline, project and/or leakage emissions from electricit consumption. As per the Tool to calculate baseline, project and/or leakage emissions from electricit consumption. An comment: - PE FC,j, Data unit: tco 2e Project emissions from fossil fuel combustion in process j during the ear. Calculated as per the Tool to calculate project or leakage CO 2 emissions from fossil fuel combustion. As per the Tool to calculate project or leakage CO 2 emissions from fossil fuel procedures (if an): combustion Monitoring frequenc: As per the Tool to calculate project or leakage CO 2 emissions from fossil fuel combustion As per the Tool to calculate project or leakage CO 2 emissions from fossil fuel combustion An comment: - MG PR, Data unit: tch 4 Amount of methane generated during ear of the project activit Project Proponents Estimated using the actual amount of waste disposed in the landfill as per the procedures (if an): latest version of the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site. Monitoring frequenc: An comment: - Annuall As per the latest version of the Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site. IV. REFERENCES AND ANY OTHER INFORMATION Not applicable /25

24 Histor of the document Version Date Nature of revision 10, Annex 9 Include guidance for air heater efficienc; 13 Februar 2009 Include a clarification that emission reductions can be claimed for generation of thermal energ provided that the landfill gas displaces use of fossil fuel either in a boiler or in 09.1 EB 43, Annex 2 24 October EB 41, Annex 4 02 August EB 39, Paragraph Ma EB 36, Annex November EB 35, Annex October EB 32, Annex 6 22 June EB 28, Annex 9 15 December EB 25, Annex 6 21 Jul 2006 an air heater. Editorial changes to reflect that the source of data for the Regulator requirements relating to landfill gas has been changed. Publicl available information should be used instead of contacting the DNA for collecting the information. Following clarifications have been added: The measurement of both LFG flow and methane fraction in LFG have to be conducted on the same basis (wet or dr); Inclusion of cases where periodical measurements are allowed, and guidance on performing periodical measurements for monitoring the fraction of methane in the landfill gas. The title of the Tool to determine methane emissions avoided from dumping waste at a solid waste disposal site changes to Tool to determine methane emissions avoided from disposal of waste at a solid waste disposal site. Tool to calculate baseline, project and/or leakage emissions from electricit consumption replaces the withdrawn Tool to calculate project emissions from electricit consumption. Clarif the procedure to calculate the Adjustment Factor, where in the baseline the landfill gas was captured and destroed/used; Clarif how to appl the Tool to determine methane emissions avoided from the dumping waste at a solid waste disposal site for estimating ex-ante landfill gas emissions over the crediting period. To include AM0002, AM0003, AM0010, and AM0011; Reference to the following tools was added: Tool to calculate project emissions from electricit consumption, Tool to calculate project or leakage CO2 emissions from fossil fuel combustion, and Combined tool to identif the baseline scenario and demonstrate additionalit. Include procedures for estimating emissions reductions from use of captured landfill gas for energ generation; Expand the applicabilit to project activities where the captured landfill gas is used to suppl consumers through a natural gas distribution network. Replace the procedure for estimating flare efficienc with a reference to the Methodological Tool to determine project emissions from flaring gases containing methane. Allow the use of one measurement point for LFG captured, if the captured LFG is flared onl and not used for energ and/or electricit generation; Provide a default value for methane destruction flare efficienc (50%) should the methane destruction efficienc not be measured. 24/25