New Mexico Proposes New Methane Abatement Rule
On July 16, 2026, the New Mexico Environment Department (NMED) released a stakeholder review draft of a new rule, 20.2.51 NMAC, Methane Abatement, for public comment. The draft would create a state-level methane super-emitter program and set a zero methane emission standard for natural gas-driven pneumatic (process) controllers. This post summarizes the draft requirements, compares them to existing state and federal rules, and outlines the role of continuous monitoring in compliance.
Access the draft rule here.
What the draft rule proposes
The draft has two main components:
1) A methane super emitter program
The rule defines a super-emitter event as any methane emissions event of 50 kg/hr or greater detected using a remote sensing technology approved by NMED. Third parties, such as satellite or aerial monitoring providers, could apply to become certified notifiers and submit super-emitter notifications to NMED within 7 calendar days of detection, including a quantified emission rate, coordinates, and supporting imagery.
Once NMED receives a valid notification, it would notify the owner or operator of any source whose property boundary falls within 50 meters of the event location within 3 business days, and post the notification publicly on its website. Operators that receive a notification would be required to complete the following steps.
Complete an investigation and any repairs within 3 calendar days of receiving NMED's notification. The investigation includes reviewing at least 30 days of maintenance records, monitoring data, and fugitive emission surveys, and, if those do not identify the source, screening the entire facility with Method 21 or OGI plus audio, visual, and olfactory inspection.
If the event cannot be attributed to a specific leak, repair every leak found during the investigation.
Submit a signed super-emitter event report to NMED within 15 calendar days of the notification, and retain records for at least 5 years.
Operators whose facilities fall outside the 50-meter radius can close out the notification by submitting documentation, such as a GIS measurement, demonstrating the distance.
2) A zero-emission standard for pneumatic controllers
Beginning January 1, 2031, natural gas-driven process controllers at well sites, tank batteries, gathering and boosting stations, natural gas processing plants, and transmission compressor stations must operate with zero methane emissions to the atmosphere, either by routing emissions to a process through a closed vent system or by using self-contained controllers with no identifiable emissions. Notably, the draft does not allow compliance by routing emissions to a control device such as a flare, and it includes no exemption for sites without electrical power. Emergency shutdown devices fall outside the standard. It is noted in the draft that non-compliance with this rule can carry potential civil penalties of up to $15,000 per day - but more information is still required on how this would play out in practice.
How New Mexico’s new rule compares to existing state rules
New Mexico operators are already subject to two methane frameworks. NMED's Ozone Precursor Rule (20.2.50 NMAC) requires LDAR inspections and a phased replacement of emitting pneumatic controllers through 2030. EMNRD's methane waste rules require operators to reach a 98% gas capture rate by the end of 2026.
Draft 20.2.51 NMAC addresses large, episodic releases detected remotely, a category neither existing rule covers directly. It also goes further than 20.2.50's percentage-based pneumatic controller phase-out by requiring zero methane emissions from natural gas-driven controllers in 2031, and it applies statewide rather than only in the ozone-affected counties covered by 20.2.50.
How the new rule compares to current federal rules
EPA’s NSPS OOOOb and EG OOOOc already include a Super Emitter Program but the deadline for future implementation of the program has been delayed until January 22, 2027. Although this has been suspended for now, it can still be used as a comparison to understand how New Mexico’s draft rule is stricter in several respects. Notably, the state detection threshold is half the federal threshold, and the state requires a completed investigation and repair within 3 days, compared to the federal requirement to initiate an investigation within 5 days.
| NM Draft 20.2.51 NMAC | Federal EPA OOOOb/c (currently delayed) | |
|---|---|---|
| Super-emitter threshold | 50 kg/hr methane | 100 kg/hr methane |
| Operator response | Investigation and repairs complete within 3 calendar days | Investigation initiated within 5 days; report due in 15 days |
| Report to agency | Within 15 calendar days | Within 15 days |
| Pneumatic controllers | Zero methane emissions at all covered facility types by Jan. 1, 2031; no control-device pathway | Zero-emission process controllers for new/modified sources (OOOOb); existing sources phased in via state plans (OOOOc) |
| Public disclosure | NMED posts notifications on its website | EPA posts event data publicly |
Where the rule stands
NMED was accepting public comments until July 29, 2026. Following consideration of a petition to the Environmental Improvement Board, a public hearing is expected on or about December 7, 2026.
How continuous monitoring fits the draft criteria
Under the super-emitter program, certified third parties using satellites and aircraft would detect emissions independently of the operator, and each validated detection would result in a public notification with a 3-day investigation-and-repair deadline. Continuous monitoring supports compliance with these requirements in four ways. Qube's fixed sensors detect, quantify, and localize emissions on site in near real time.
Earlier detection. Operators can identify and repair large releases within hours, before a satellite pass or aerial survey detects the emission and triggers a public notification.
Investigation records. The draft investigation requirements include a review of at least 30 days of monitoring data. Operators using continuous monitoring hold that record already, with time-stamped emission rates and source localization that can identify or rule out the responsible equipment.
Documentation of notification errors. If a notification contains an error, 30 days of quantified site-level data provides evidence to demonstrate the error or an off-site source.
Qube’s existing regulatory approvals in the US and New Mexico
Qube's continuous monitoring solutions already holds approvals under the regulatory frameworks this draft rule builds on.
US EPA OOOOb/OOOOc. In March 2025, Qube became the first point-source continuous monitoring technology approved by the EPA as an Alternative Test Method (MATM-008) for periodic screening under NSPS OOOOa, OOOOb, and EG OOOOc, allowing operators to replace AVO and OGI inspections with continuous monitoring.
New Mexico ALARM. Qube's continuous monitoring system is approved by New Mexico's Energy, Minerals and Natural Resources Department as an Advanced Leak and Repair Monitoring (ALARM) technology, allowing operators to earn credits of 40% of the natural gas volume discovered, verified, and repaired toward their gas capture requirements.
For operators in the Permian and San Juan basins, detection thresholds are decreasing and response windows are shortening. Continuous monitoring provides a direct means of meeting both.