Comparison of equipment leak emissions to previous direct measurement study. Figure 5 compares the distribution of measured emissions in this study from components that were identified with optical gas imaging (OGI) to a previous field campaign (Allen et al., 2013) that utilized a similar in-field procedure to identify leaking components. Emission rates of components that were identified as leaking with OGI in this study were typically larger than the equivalent percentile of leaking components in the Allen et al. (2013) study except for the largest two emission sources from the Allen study, which were greater than 100 scfh and were both located in the Appalachian region. Since the Appalachian region was not included in this study, a sensitivity analysis was conducted to compare Allen et al. (2013) measurements in similar regions to the measurements in this study. DOI: https://doi.org/10.1525/elementa.368.f5