Grade D
“Hazard-
ous”
+1.0 parts per billion of NO2 pollution
Grade C
“Definitely
declining”
0
-1.0
Grade B
“Still
desirable”
Black people and immigrants
were essentially trapped
in neighborhoods the
government deemed too
risky for investment
-2.0
Grade A
“Best”
Grade D
“Hazardous”
+1.0 parts per billion of NO2 pollution
Grade C
“Definitely
declining”
0
-1.0
Grade B
“Still
desirable”
Black people and immigrants were
essentially trapped in neighborhoods
the government deemed too
risky for investment
-2.0
Grade A
“Best”
Less NO2
pollution
More NO2
pollution
Black people and immigrants were
essentially trapped in neighborhoods
the government deemed too
risky for investment
Grade A
“Best”
Grade B
“Still desirable”
Grade C
“Definitely declining”
Grade D
“Hazardous”
-2.0
-1.5
-1.0
-0.5
0
+0.5
+1.0
parts per billion
Less NO2
pollution
More NO2
pollution
Black people and immigrants were
essentially trapped in neighborhoods
the government deemed too
risky for investment
Grade A
“Best”
Grade B
“Still desirable”
Grade C
“Definitely declining”
Grade D
“Hazardous”
-2.0
-1.5
-1.0
-0.5
0
+0.5
+1.0
parts per billion
Less NO2
pollution
More NO2
pollution
Black people and immigrants were
essentially trapped in neighborhoods
the government deemed too
risky for investment
Grade A
“Best”
Grade B
“Still desirable”
Grade C
“Definitely declining”
Grade D
“Hazardous”
-2.0
-1.5
-1.0
-0.5
0
+0.5
+1.0
parts per billion