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Relationship between percent people of color (PoC) and leak density from surveyed census tracts in each of nine of the metro areas. In eight of the nine metro areas, leak density is estimated to increase with increased percent PoC. Both the magnitude of this association and the overall leaks/mile vary among metro areas. Blue lines indicate that there is statistical evidence to conclude that leaks/mile increase with increasing percent PoC. Note that the y-axes vary across metro areas.
