In March 2025, EPA approved Qube continuous monitoring as an alternative technology for periodic inspections under NSPS OOOOb/c ( and applicable to OOOOa). Here we detail how it works. Pick a 7-day window and a 90% PoD threshold. The 7-day block average either passes or fails, and crews conduct site inspections only upon fails. The results are less routine visits, faster repairs, and reduced costs across sites.

A Colorado well pad restarted after a non-routine shut-in. Within hours, Qube’s continuous monitoring flagged methane levels consistent with a large release event (estimated at >100 kg/h, about 125 mscf/d). The operator’s LDAR team located badly leaking level controllers and multiple thief hatches and completed repairs in under 24 hours. The operator then initiated a fleet-wide replacement of aging controllers to prevent recurrence.

At a Colorado wellsite, Qube’s continuous monitoring system alerted operators to a sustained emission event. Qube’s data localized the emissions to the tank area and prompted a field investigation to verify the source of the anomaly. With this information, the team was able to identify the emission source and interrogate the root cause, a blocked vent line leading to the combustor.

In Colorado’s Piceance Basin, a leading operator continues to set the bar for emissions control and operational safety. By integrating Qube Technologies’ continuous methane monitoring system, the operator aimed to strengthen its LDAR program and protect nearby homes located within 1,000 feet of its well pad.

This case study details how real-time alarms and accurate emissions source localization led to rapid action at the wellsite. Notably, catching a high-volume leak at the separator from going unnoticed over the weekend.

Release 2.39 is now live, introducing the LDAR Workflow to effectively manage CH4 emission rate alarms by classifying emissions, assigning root causes, and tracking repair status directly in the Qube Dashboard. Additionally, users can utilize the Basic Workflow for other alarms to add comments and mark them as "Resolved," while classification data is easily accessible for analysis and export.