Table 1 Percentile ranking for Somerville and Chinatown area compared to all block groups in USA for environmental justice indexes, environmental indicators, and demographic indicators from EPA’s EJSCREEN tool (https://www.epa.gov/ejscreen) [17]

 EJ Index for Particulate Matter (PM 2.5)

52

78

 EJ Index for Ozone

51

81

 EJ Index for NATA* Diesel PM

36

93

 EJ Index for NATA* Air Toxics Cancer Risk

50

83

 EJ Index for NATA* Respiratory Hazard Index

49

84

 EJ Index for Traffic Proximity and Volume

80

99

 Particulate Matter (PM)

13

14

 Ozone

26

25

 NATA* Diesel PM

80-90th

95-100th

 NATA* Air Toxics Cancer Risk

<50th

70-80th

 NATA* Respiratory Hazard Index

50-60th

80-90th

 Traffic Proximity and Volume (daily traffic count/distance to road)

94

99

 Demographic Index

47

89

 Minority Population

51

80

 Low Income Population

43

92

 Linguistically Isolated Population

80

98

 Population with Less Than High School Education

52

93

 Population under Age 5

30

31

 Population over Age 64

30

31