Satellites designed to target specific locations have lower detection thresholds of around 200 kg/hr, but the data are (for the most part) not publicly available . Aircraft-based measurement technologies have a much lower detection threshold of around 3 kg/hr and provide mostly unbiased emission rate estimates , but they occur too infrequently in practice to consistently capture intermittent, short-lived emission events at the site-level. CMS observe methane concentrations in near real-time and have detection thresholds ranging from less than 1 kg/hr (this work) to 3-6 kg/hr , making them a promising avenue for site-level, measurement-based emissions information. However, an analytical framework is often required to translate the raw concentration data from the CMS into emission event start and end times (event detection), emission source locations (localization), and emission rates (quantification).