In February of 2021, ACR suspended new listings of projects using the following methodologies while ACR reviewed the American Innovation in Manufacturing Act (AIM) and subsequent potential regulation in the United States as well as regulations in Canada and Mexico for potential impacts to additionality, eligibility, or baselines.  

1. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Certified Reclaimed HFC Refrigerants (v.1.1) 
2. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Refrigeration Systems (v.2.0) 
3. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in foam Manufacturing and Use (v.2.0) 

The AIM Act, enacted by Congress in December of 2020, directs the U.S. EPA to address the environmental impact of hydrofluorocarbons (HFCs) by: phasing down production and consumption, maximizing reclamation and minimizing releases from equipment, and facilitating the transition to next-generation technologies through sector-based restrictions.1 Although the United States has not ratified the October 15, 2016 Kigali Amendment to the Montreal Protocol, the AIM Act’s phase-down schedule is consistent with the applicable Kigali schedule. Similarly, the Ozone-depleting Substances and Halocarbon Alternatives Regulations (ODSHAR), made under the authority of the Canadian Environmental Protection Act, 1999, and enforceable on December 29, 2016, include provisions to phase down the consumption and production of HFCs in alignment with Canada’s adoption of the Kigali Amendment to the Montreal Accord.2 Although Mexico accepted the Kigali Amendments on September 25, 2018,3 Mexico, as a Group 1 Article 5 party, is following a slower HFC phase-down trajectory (e.g., a 10% reduction in consumption below baseline by 2029 rather than by 2019 for Canada, a Main Group Non-Article 5 party) and has not yet passed legislation analogous to the United States’ AIM Act or promulgated regulations analogous to Canada’s ODSHAR. 

Updates to policy changes are listed for each methodology below. 

1. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Certified Reclaimed HFC Refrigerants (v.1.1) 

Effective immediately, ACR is accepting new listings for projects using the Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Certified Reclaimed HFC Refrigerants.  

In the U.S., the first of several EPA rulemaking processes as directed by the AIM Act is underway and is expected to be completed in 2021 with anticipated dates of enforcement of January 1, 2022. ACR will continue to post information to this site as the rulemaking process proceeds and the exact language of the rules are finalized. 

ERTs issued from this project type are considered additional until further notice for the following reasons: 

• The U.S. EPA’s first proposed rule (Docket ID number EPA-HQ-OAR-2021-0044) under the AIM Act sets the HFC production and consumption baseline levels from which reductions will be made, establishes an initial methodology for allocating and trading HFC allowances for 2022 and 2023, and creates a robust, agile, and innovative compliance and enforcement system.4 As of the writing of this document, the proposed rule does not set requirements for the production of reclaimed HFC nor the purchase of reclaimed HFC. The proposed rule does not create financial incentives to reclaim HFC. Further, several HFC end-use sectors are excluded from the proposed rule or have longer compliance deadlines.  
• The AIM Act, which directs, and guides EPA’s rulemaking processes, contains no language requiring HFC reclaim or mandating incentives for HFC reclaim. Section (h)(2) requires only that EPA “consider using authority to increase opportunities for reclaiming HFC refrigerants.” Subsequent EPA rulemakings may heed this directive and include more specific requirements for purchase or production of reclaimed HFC; but, as of yet, the publicly available draft rule includes no such language. 
• ERT’s generated from ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Certified Reclaimed HFC Refrigerants are contingent not only on the production of reclaimed HFC, but on the sale, and annual emission rates based on equipment leak rates from the EPA. 
• In Canada, the Ozone-depleting Substances and Halocarbon Alternatives Regulations (ODSHAR) came into force on December 30, 2016, with additional sections in January 1, 2019. ODSHAR does not set requirements for the production of reclaimed HFC nor the purchase of reclaimed HFC. The regulations neither create financial incentives to reclaim HFC. 
• Response in the HFC reclaim market from the U.S. EPA rules and Canadian regulation is possible even if the finalized rules and regulations do not require HFC reclaim or use of reclaimed HFC. However, the timing and magnitude of the response in the reclaim market cannot be known with certainty and is dependent on the speed of transition to next generation technologies in each end-use sector. ACR will continue to monitor HFC reclaim rates as available from industry groups and the U.S. EPA. The ACR Standard requires that all methodologies that rely on a performance standard for additionality be re-examined on a regular basis. 
• ACR will adjust policy in response to U.S. EPA rulemaking and any subsequent regulations in Canada and Mexico to ensure integrity of all ERTs issued. ACR will continue to post information here and communicate with stakeholders as rulemaking progresses. Were U.S., Canadian, or Mexican federal, state, or local regulation to directly regulate or incentivize the production or purchase of reclaimed HFC such that the activity would be non-additional, the effective date of any rule(s) or regulation(s), once finalized, is the date of enforcement.

2. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Refrigeration Systems (v.2.0)

Effective immediately, ACR is accepting new listings for projects using the Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Refrigeration Systems.  

In the U.S., the first of several EPA rulemaking processes as directed by the AIM Act is underway and is expected to be completed in 2021 with anticipated dates of enforcement of January 1, 2022. ACR will continue to post information to this site as the rulemaking process proceeds and the exact language of the rules are finalized. 

ERTs issued from this project type are considered additional until further notice for the following reasons: 

– The U.S. EPA’s proposed rule (Docket ID number EPA-HQ-OAR-2021-0044 ) sets the HFC production and consumption baseline levels from which reductions will be made, establishes an initial methodology for allocating and trading HFC allowances for 2022 and 2023, and creates a robust, agile, and innovative compliance and enforcement system.5 As of the writing of this document, the proposed rule does not set requirements for the production of reclaimed HFC nor the purchase of reclaimed HFC. The proposed rule does not require the transition of equipment to accommodate ultra-low GWP refrigerants but rather will begin the phasedown of the highest GWP refrigerants in use currently over a period of time. 

– ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Refrigeration Systems (v.2.0) credits the switch from an allowable HFC refrigerant for the applications (per EPA SNAP) to another allowable refrigerant of much lower GWP, incentivizing the rapid and large change in GWP when ARS are designed to accommodate ultra-low GWP refrigerants (i.e., < 15). This transition is additional even as the baseline allowable refrigerants are changing to those of lower GWP with regulation. The baseline material is regulated not the project material. ACR’s methodologies are updated to reflect current baseline HFC refrigerants per regulation. 

– ACR’s methodology relies on baselines and project scenarios of currently allowable refrigerants for select temperature ranges and uses. These are specified by the EPA through the Significant New Alternatives Policy (SNAP) and for some states and Canada through similarly structured legislation and regulations. ACR is updating the baseline quantification to reflect HFCs that have already been phased out in certain jurisdictions and will be phased out in the coming years in others.  

– ACR will adjust policy in response to EPA rulemaking and any subsequent regulations in U.S. states, Canada, and Mexico to ensure integrity of all ERTs issued. ACR will continue to post information here and communicate with stakeholders. Were U.S., Canadian, or Mexican federal, state, or local regulation to directly regulate or incentivize the production of refrigeration systems to accommodate ultra-low GWP refrigerants such that the activity would be non-additional, the effective date of any rule(s) or regulation(s), once finalized, is the date of enforcement.

3. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in Foam Manufacturing and Use (v.2.0) 

Effective immediately, ACR is accepting new listings for projects using the Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in Foam Manufacturing and Use (v.2.0). 

In the U.S., the first of several EPA rulemaking processes as directed by the AIM Act is underway and is expected to be completed in 2021 with anticipated dates of enforcement of January 1, 2022. ACR will continue to post information to this site as the rulemaking process proceeds and the exact language of the rules are finalized. 

ERTs issued from this project type are considered additional until further notice for the following reasons: 

– The U.S. EPA’s proposed rule (Docket ID number EPA-HQ-OAR-2021-0044 ) sets the HFC production and consumption baseline levels from which reductions will be made, establishes an initial methodology for allocating and trading HFC allowances for 2022 and 2023, and creates a robust, agile, and innovative compliance and enforcement system.6 As of the writing of this document, the proposed rule does not set requirements for the production of reclaimed HFC nor the purchase of reclaimed HFC. The proposed rule does not require the transition to ultra-low GWP foam blowing agents but rather will begin the phasedown of the highest GWP blowing agents for certain end-uses over a period of time. 

– ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in foam Manufacturing and Use credits the switch from an allowable blowing agent for the end use (per EPA SNAP) to another allowable blowing agent of lower GWP, incentivizing the rapid and large change in GWP manufacturing systems designed to accommodate ultra-low GWP blowing agents (i.e., < 30). This transition is additional even as the baseline allowable blowing agents are changing to those of lower GWP with regulation. The baseline material is regulated not the project material. ACR’s methodologies are updated to reflect current baseline HFC blowing agents per regulation. 

– ACR’s methodology relies on baselines and project scenarios of currently allowable HFCs for select end uses. These are specified by the EPA through the Significant New Alternatives Policy (SNAP) and for some states and Canada through similarly structured legislation. ACR is updating the baseline quantification to reflect HFCs that have already been phased out in certain jurisdictions and will be phased out in the coming years in others.  

– ACR will adjust policy in response to EPA rulemaking and any subsequent regulations in U.S. states, Canada, and Mexico to ensure integrity of all ERTs issued. ACR will continue to post information here and communicate with stakeholders. Were U.S., Canadian, or Mexican federal, state, or local regulation to directly regulate or incentivize the production of or use of ultra-low GWP blowing agents such that the activity would be non-additional, the effective date of any rule(s) or regulation(s), once finalized, is the date of enforcement.

LITTLE ROCK, Arkansas, June 3, 2021 –  The American Carbon Registry (ACR) has approved a new methodology for monitoring, reporting and verifying greenhouse gases (GHG) collected using new technology at large landfills in the U.S. The methodology seeks to incentivize the deployment of Automated Landfill Gas Control Technology, which would allow landfills to go above and beyond existing regulations to prevent the release of methane and other gases into the atmosphere, offering the potential for hundreds of millions of tons of additional emission reductions over the next decade.

Landfills that are not required to install a gas collection and control system have been eligible for some time to generate carbon offsets. ACR’s methodology update allows for additional methane capture afforded by voluntary installation of automated landfill gas control beyond regulatory requirements.

The new ACR protocol  – “Methodology for the Quantification Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Landfill Gas Destruction and Beneficial Use Projects, version 2.0” – has the potential to accelerate the adoption of Automated Landfill Gas Control Technology for a large number of landfills due to the opportunity to generate carbon finance from the sale of carbon offsets to voluntary corporate buyers and to airlines for meeting requirements under the International Civil Aviation Organization’s global carbon market. The updated methodology was approved after a public comment period in July and August 2020, and a six-month scientific peer review process.

“The opportunity to reduce greenhouse gas emissions and generate carbon credits through Loci’s Automated Landfill Gas Collection services will help cover the costs to install state-of-the-art gas collection technologies for a large number of landfills,” said Peter Quigley, chairman and CEO of Loci Controls, Inc., a developer of eligible automated collection technology.  “In addition to the benefits of reduced GHG emissions, increased productivity, and reduced Environmental, Health and Safety (EHS) risks, it is now possible to generate additional sources of revenue for landfill gas to energy projects.”

Mr. Quigley said that at a typical landfill gas collection system where Loci Automated Control Technology is used, 50,000 tons CO2 equivalent per year of emission reductions are expected, equal to the emissions annually of over 10,000 passenger cars. If this methodology were applied at the 1,000 largest landfills in the country, it could produce emissions reductions of 50 million tons a year of CO2 equivalent.

Landfills are filled with organic material. When that organic material decomposes without oxygen it generates both carbon dioxide and methane, a potent greenhouse gas that has 28 times the warming power of CO2 over 100 years and 84 times the warming power over the first 20 years after it reaches the atmosphere.

The EPA estimates that landfills are the third-largest source of human-related methane emissions in the United States, accounting for 15.1% of these emissions in 2019, equivalent to the annual emissions from more than 21 million passenger vehicles. Regulations under the Clean Air Act require landfills of a certain size to install and operate a gas collection and control system.

Currently, these systems are manually operated through a process known as well-field tuning. Once a month, a technician is required to measure the gas composition, flow, temperature, and pressure at each collection point at a landfill, and to make adjustments to reduce the methane emissions being leaked into the atmosphere.

Automated Control Technology works by installing a cellular connected sensor system that takes hourly measurements and uses cloud-based computing to automatically make small valve adjustments to continuously reduce the emissions of methane and other GHGs and optimize the collection process.

Margaret Williams, ACR’s technical director, said that when used appropriately, carbon markets create incentives for additional climate action that would not have taken place otherwise.

“The new ACR methodology has been developed to create financial incentives to deploy new technology that will help landfills maximize collection and minimize emissions,” she said. “Until now, carbon credits could not be generated on landfills that are required by regulations to install and operate gas collection and control systems.  As a result, some of the largest landfills in the US were not eligible to participate in voluntary carbon credit markets related to landfill gas collection.”

This methodology creates an avenue for crediting for landfills that go beyond those regulatory requirements with advanced technologies and more efficient capturing. The new methodology contains requirements for eligibility, monitoring, qualification and accounting of carbon offset credits so that, for the first time, these large landfills can create projects using Automated Control Technology that improves gas collection over standard manual well-field tuning methods and current capture using technologies that meet regulatory requirements.

In addition to the climate benefits of the approach made possible by Automated Control Technology, there are substantial co-benefits as well. Many large urban landfills are in proximity to communities that have the lowest income, lowest value housing, and are often have a high density of underserved/under-represented populations.  The technology reduces the amount of time landfill personnel have to spend in the landfill itself, which is often a dangerous environment to work in; it reduces odors associated with emissions; and it also reduces Non-Methane Organic Compound emissions, which have adverse human health consequences.

Demand for carbon credits is increasing worldwide as leading corporations, states, and the Federal Government announce climate change strategies.  This year alone, companies as diverse as Microsoft, Unilever, Delta Airlines, BP and Ikea have announced plans for operating carbon neutral or carbon negative. Several states from California to Maine have made pledges to be carbon neutral between 2035 and 2045, and under the new Biden Administration, the Federal Government has announced plans for the US to be carbon neutral by 2050. The new ACR methodology will provide an opportunity to meet some of this anticipated growth in demand for voluntary carbon credits.

LITTLE ROCK, April 16, 2021- The American Carbon Registry (ACR), a nonprofit enterprise of Winrock International, is soliciting public comments on a newly developed Methodology for the Quantification, Monitoring, Reporting, and Verification of Greenhouse Gas Emissions Reductions and Removals from Improved Forest Management on Small Non-Industrial Private Forestlands.

The methodology is designed to quantify greenhouse gas (GHG) emission reductions and removals resulting from improved forest management activities on aggregated ownerships of non-industrial private forestlands ranging from 40–5,000 forested acres. Emission reductions are quantified from forest carbon projects that exceed baseline forest management practices, and removals are quantified for retention of annual forest growth. The primary carbon sequestration mechanism is the commitment to grow trees longer and increase forest stocking.

Despite owning nearly 40% of U.S. forestlands, less than 1% of small forest ownerships have enrolled in the carbon market to date. This is due to known financial and institutional barriers associated with the scale and complexity of the existing market.

This methodology, developed in partnership with Finite Carbon and ACR, includes innovative aggregation and monitoring approaches to alleviate these entry barriers and allow this landowner type to quantify GHG benefits and receive financial compensation for carbon sequestration.

Stakeholders are invited to review the methodology and submit comments to ACR@Winrock.org by May 17, 2021.

Date: February 11, 2021

Subject: ACR Policy Change for Methodologies Related to HFCs 

Background

The American Innovation and Manufacturing Act of 2020 (AIM), a part of the Consolidated Appropriation Act, 2021, was signed by President Trump on December 27, 2020. AIM authorizes the following:

-A phase down the production and consumption of HFCs through an allowance program.

-That the EPA establish standards for the management of HFCs used as refrigerants through recovery, reclamation and improved servicing, repair, and disposal practices.

-The creation of a three-year grant program for small businesses, allocating $5 million annually toward increasing recovery and reclamation of refrigerants at end of life.

-That the EPA establish sector-based use restrictions, facilitating the transition to next-generation technologies.

The AIM Act requires the Environmental Protection Agency (EPA) to implement a phase down of the production and consumption of HFCs in order to reach approximately 15% of their 2011-2013 average annual levels by 2036, consistent with the phase down schedule in the Kigali Amendment[1]. Per the HFC phase-down schedule of the Kigali Amendment, Non-A5 countries shall achieve a 40% reduction below 2011-2013 consumption by 2024[2]. On January 27, 2021 President Biden issued an executive order seeking U.S. Senate consent to ratify the Kigali Amendment to the Montreal Protocol.

ACR’s plans for addressing the impact of AIM on project crediting under three HFC-associated methodologies are described below. For additional information contact acr@winrock.org.

1. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Certified Reclaimed HFC Refrigerants (v.1.1) 

ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from Certified HFC Refrigerants, has a single reporting period and a 10-year crediting period. In light of recent regulatory activity, effective immediately, ACR will:

-Suspend  listings  for project activities that have occurred in 2021. Project listings for which  the project activity occurred prior to December 27, 2020 will be accepted and eligible for the full crediting period. Please contact ACR regarding 2020 projects that are not already listed.

-Review the AIM Act, rollout schedule and other relevant data in consultation with stakeholders before making a final policy decision on an appropriate, conservative milestone for determining crediting and regulatory additionality.

2. Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Refrigeration Systems

ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse  Gas Emissions Reductions and Removals from the Transition to Advanced Refrigeration Systems credits the installation of new refrigeration systems that can use low or no GWP refrigerants such as ammonia, hydrocarbons and carbon dioxide in lieu of higher GWP HFC systems. Eligible sectors are large commercial refrigeration and stand-alone commercial refrigeration systems. The AIM Act of 2020 does not mandate the installation of advanced refrigeration systems, but it does require the phase down of the production and consumption of HFCs that are commonly used as refrigerants in the baseline. ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions, Reductions and Removals from the Advanced Refrigeration Systems has a single reporting period and a 10-year crediting period.  In light of recent regulatory activity, effective immediately, ACR will:

-Suspend  listings for all project activities that have occurred in 2021.  Project listings for which  the project activity occurred prior to December 27, 2020 will be accepted and eligible for the full crediting period. Please contact ACR regarding 2020 projects that are not already listed.

-Review the baseline assumptions, practice-based performance standard, regulatory outlook for SNAP regulations and updated market assessments for potential methodological updates in consultation with stakeholders.

3.          Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in Foam Manufacturing and Use 

ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in Foam Manufacturing and Use credits the use of a low GWP foam blowing agent (FBA) in lieu of an FBA with higher GWP. The AIM Act of 2020 requires the phase down of the production and consumption of HFCs that are commonly used as FBA in the baseline. ACR’s Methodology for the Quantification, Monitoring, Reporting and Verification of Greenhouse Gas Emissions Reductions and Removals from the Transition to Advanced Formulation Blowing Agents in Manufacturing and Use relies on a practice-based performance standard and a regulatory surplus test for the assessment of additionality. The practice-based performance standard references SNAP rules 20 and 21 as well as a market assessment completed in 2017. The methodology has a single reporting period and a 10-year crediting period.  In light of recent regulatory activity, effective immediately, ACR will:

-Suspend  listings  for all project activities that have occurred in 2021. Projects for which  the project activity occurred prior to December 27, 2020 will be accepted and eligible for the full crediting period. Please contact ACR regarding 2020 projects that are not already listed.

-Review the baseline assumptions, practice-based performance standard, regulatory outlook for SNAP regulations and updated market assessments for potential methodological updates in consultation with stakeholders.

[1] https://www.congress.gov/bill/116th-congress/house-bill/5544/text

[2] https://eia-international.org/wp-content/uploads/EIA-Kigali-Amendment-to-the-Montreal-Protocol-FINAL.pdf

Arlington VA, October 2, 2020 – The American Carbon Registry (ACR), a nonprofit enterprise of Winrock International, announces an open public comment period for updates to the ACR Standard v7.0, which details ACR’s requirements and specifications for the quantification, monitoring, reporting, verification, registration and issuance of project-based GHG emissions reductions and removals as carbon credits.

Key updates include the use of 100-year Global Warming Potentials (GWPs) from the IPCC 5th Assessment Report (AR5) to calculate emission reductions, requirements to avoiding double claiming between achievement of NDCs targets and voluntary offsetting, and addition of detailed procedures to avoid double counting in the CORSIA.

Please submit written comments via ACR@winrock.org by December 1, 2020.

ACR Standard v7.0 will go into effect January 1, 2021.

JULY 8, 2020 – The American Carbon Registry (ACR), a nonprofit enterprise of Winrock International, is soliciting public comments on an updated Methodology for Landfill Gas Destruction and Beneficial Use.

Under the existing published methodology, projects that reduce methane emissions as a result of specified combustion or beneficial use activities are eligible for crediting emission reductions.

Version 2.0 of the methodology adds as an eligible project activity the installation of an automated collection system that increases landfill gas collection efficiency above that obtained with standard collection methods with methane destruction, conversion, or enhancement.

Automated collection systems hold tremendous promise to increase the collection of methane from landfills through the use of automatic control and measurement devices that eliminate the need for standard manual wellfield tuning. When combined with cloud- based data collection and analysis tools, automated collection systems result in the ability to continuously optimize wellfield conditions resulting in significant increases in landfill gas collection efficiency.

Stakeholders are invited to review the methodology and submit comments to ACR@Winrock.org by August 7, 2020

APRIL 15, 2019: The American Carbon Registry (ACR), a nonprofit enterprise of Winrock International, announces an open public comment period for updates to the ACR Standard v6.0, which details ACR’s requirements and specifications for the quantification, monitoring, reporting, verification, registration and issuance of project-based GHG emissions reductions and removals as carbon offsets.

OCTOBER 17, 2018 – The American Carbon Registry (ACR), a nonprofit enterprise of Winrock International, is soliciting public comments on two methodologies:

• Updates to the Methodology for Avoided Conversion of Grasslands and Shrublands to Cropland Production (ACoGS). Proposed revisions to methodology v2.0 are to simplify use, better align with conservation programs, and reflect the latest trends in conversion.
• A new Methodology for Capturing and Destroying Methane from U.S. Coal and Trona Mines to quantify GHG emission reductions associated with the capture and destruction of methane that would otherwise be vented into the atmosphere as a result of mining operations at active underground and surface coal and trona mines and abandoned underground coal mines. Not only an important GHG mitigation activity, coal mine methane mitigation also contributes to mine safety initiatives and can increase the supply of a clean energy source when methane is recovered and used to produce electricity or heat.

Stakeholders are invited to review the methodologies and submit comments to ACR@Winrock.org by November 18, 2018.