Data exploration: association between Superfund site deletion status and local racial demographics, stratified by NPL variables. Green and red bars represent the mean racial proportions for deleted and nondeleted Superfund sites, segmented into high/low categories (top/bottom 50%, respectively) for Hazard Ranking System (HRS) score and years listed on the NPL. Demographic data are from the 2021 ACS (⁠$R=4$ mile geographic buffer). The mean proportion of individuals identified as Asian is consistently lower for deleted sites across all NPL variable combinations, a pattern unique to this racial group. Blue bars are constant across the four panels and show the overall proportion of each group within the US population.