ATSDR’s eight top priority
hazardous substances
 2007
Rank
SUBSTANCE NAME
Total
Points
2005
Rank
1
Arsenic
1672.58
1
2
Lead
1534.07
2
3
Mercury
1504.69
3
4
Vinyl Chloride
1387.75
4
5
Polychlorinated Biphenyls
1365.78
5
6
Benzene
1355.96
6
7
Cadmium
1324.22
8
8
Polycyclic Aromatic Hydrocarbons
1368.98
7