Fig. 1: Stationary air monitoring detects sampling site-specific emissions.

A Map of stationary air monitoring sampling sites. The location of the My Way Trading warehouse fire is depicted by the flame icon. Site 1 visits are within the evacuation zone and Site 2 visits are outside the evacuation zone. B Number of compounds detected at each sampling site visit. “Common” compounds are compounds detected at all sampling sites and visits. “Shared” compounds are compounds detected at multiple, but not all, sampling sites and visits. “Unique” compounds are compounds detected at only one sampling site visit.