Comparison of Priority on CERCLA list to
RANK
IF ranked by NPI for perceived risk
ATSDR
Priority
 CERCLA Priority list of
hazardous substances
NPI Rank
1
ARSENIC
10
2
LEAD
11
3
MERCURY
35
4
VINYL CHLORIDE
65
5
POLYCHLORINATED BIPHENYLS
Unranked
6
BENZENE
14
7
CADMIUM
6
8
POLYCYCLIC AROMATIC HYDROCARBONS
18
9
BENZO(A)PYRENE
18
10
BENZO(B)FLUORANTHENE
18
11
CHLOROFORM
66