The state has announced a new methane emission rule for active and closed solid waste (MSW) landfills in their state. All affected landfills must meet the requirements starting July 1, 2024. While the requirements of the new rule are lengthy, and will impact many aspects of landfill operations, this announcement is narrowly focused on new requirements specific to surface emissions monitoring (SEM).
The new requirements mirror those of the US EPA and other states, requiring:
– Quarterly SEM inspections using optical gas imaging (OGI) cameras or other approved methods
– Annual SEM inspections using a tracer gas
– Development and implementation of a SEM plan
– Reporting of SEM results to the state
While the new rule will drive greater accountability for methane emissions, it will also lead to increased labor costs and technicians’ exposure to hazards by increasing their inspection time threefold. has alleviated these concerns by allowing the use of a drone to perform work that would otherwise be performed manually. The drone (an unmanned aerial system referred to as the SnifferDRONE) performs the inspection 50% faster, thus reducing technician’s exposure to hazards, while improving the effectiveness of detecting methane emissions and their leak sources.
The US EPA was the first to approve the use of an unmanned aerial system (UAS) for this purpose as outlined in Other Test Method 51 (OTM-51). has integrated OTM-51, with modifications, in their new rule. The method, utilizing the UAS, provides confidence in inspection via greater process control, data management, and professional reporting.
Industry leaders in the state began using the SnifferDRONE for landfill emission monitoring in 2023. These early adopters recognized the opportunity to improve the environment and their operations. We congratulate these leaders for their vision and thank them for making a difference. We look forward to continuing our work in the state and beyond to improve the methods for detecting and accounting for landfill methane emissions.
