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2003 ATSDR CEP Site Count Report

Rank Substance Name All Sites/
Events		 NPL Sites CAS RN
1 LEAD 386 251 007439-92-1
2 TRICHLOROETHYLENE 338 280 000079-01-6
3 ARSENIC 299 192 007440-38-2
4 TETRACHLOROETHYLENE 251 198 000127-18-4
5 VOLATILE ORGANIC COMPOUNDS, UNSPECIFIED 187 129 HZ1900-01-T
6 BENZENE 184 130 000071-43-2
7 CADMIUM 183 126 007440-43-9
8 CHROMIUM 178 121 007440-47-3
9 POLYCHLORINATED BIPHENYLS 168 111 001336-36-3
10 MERCURY 144 86 007439-97-6
10 MANGANESE 144 84 007439-96-5
12 ZINC 143 88 007440-66-6
13 1,1,1-TRICHLOROETHANE 128 108 000071-55-6
14 COPPER 125 73 007440-50-8
15 CHLOROFORM 116 90 000067-66-3
16 1,1-DICHLOROETHENE 109 93 000075-35-4
17 POLYCYCLIC AROMATIC HYDROCARBONS 108 75 130498-29-2
18 BENZO(A)PYRENE 105 55 000050-32-8
19 METHYLENE CHLORIDE 104 72 000075-09-2
20 NICKEL 102 65 007440-02-0
21 TOLUENE 101 66 000108-88-3
22 VINYL CHLORIDE 100 81 000075-01-4
23 BARIUM 95 54 007440-39-3
24 ANTIMONY 92 58 007440-36-0
25 1,2-DICHLOROETHANE 89 73 000107-06-2
26 1,1-DICHLOROETHANE 88 76 000075-34-3
26 DI(2-ETHYLHEXYL)PHTHALATE 88 58 000117-81-7
28 METALS N.O.S. 87 56 HZ0900-01-T
29 BENZO(A)ANTHRACENE 78 41 000056-55-3
29 CHRYSENE 78 38 000218-01-9
31 VANADIUM 76 41 007440-62-2
32 CARBON TETRACHLORIDE 75 54 000056-23-5
32 BERYLLIUM 75 35 007440-41-7
34 IRON 74 45 007439-89-6
35 PHENANTHRENE 73 32 000085-01-8
36 NAPHTHALENE 70 37 000091-20-3
37 BENZO(B)FLUORANTHENE 68 29 000205-99-2
38 BENZO(K)FLUORANTHENE 65 30 000207-08-9
39 ETHYLBENZENE 62 38 000100-41-4
39 XYLENES, TOTAL 62 38 001330-20-7
41 INDENO(1,2,3-CD)PYRENE 61 27 000193-39-5
42 HEPTACHLOR EPOXIDE 60 40 000087-86-5
43 COBALT 57 25 007440-48-4
44 DDT, P,P’- 54 33 000050-29-3
44 DIELDRIN 54 28 000060-57-1
44 THALLIUM 54 25 007440-28-0
47 DIBENZO(A,H)ANTHRACENE 53 26 000053-70-3
48 BENZO(GHI)PERYLENE 52 21 000191-24-2
49 ALUMINUM 51 32 007429-90-5
50 1,2-DICHLOROETHENE, TRANS- 50 47 000156-60-5
50 SODIUM 50 33 007440-23-5
52 DDE, P,P’- 49 29 000072-55-9
52 SELENIUM 49 22 007782-49-2
54 1,2-DICHLOROETHYLENE 47 40 000540-59-0
54 2-METHYLNAPHTHALENE 47 21 000091-57-6
56 CHLOROBENZENE 45 33 000108-90-7
56 CYANIDE 45 24 000057-12-5
58 DDD, P,P’- 44 25 000072-54-8
59 FLUORANTHENE 43 17 000206-44-0
60 PYRENE 42 17 000129-00-0
61 HEPTACHLOR EPOXIDE 41 19 001024-57-3
62 PESTICIDES, UNSPECIFIED 39 23 HZ1200-01-T
63 SILVER 38 18 007440-22-4
63 DIBENZOFURAN 38 17 000132-64-9
65 1,2-DICHLOROETHENE, CIS- 37 28 000156-59-2
65 CHLORDANE 37 26 000057-74-9
67 MAGNESIUM 34 21 007439-95-4
68 2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN 32 23 001746-01-6
68 ACETONE 32 20 000067-64-1
70 BROMODICHLOROMETHANE 30 23 000075-27-4
70 NITRATE 30 22 014797-55-8
70 AROCLOR 1254 30 20 011097-69-1
70 ASBESTOS 30 14 001332-21-4
70 FLUORENE 30 12 000086-73-7
70 CARBAZOLE 30 9 000086-74-8
76 DI-N-BUTYL PHTHALATE 29 15 000084-74-2
77 2-BUTANONE 28 21 000078-93-3
77 AROCLOR 1260 28 17 011096-82-5
77 ACENAPHTHYLENE 28 12 000208-96-8
77 ANTHRACENE 28 10 000120-12-7
81 ACENAPHTHENE 27 9 000083-32-9
82 CALCIUM 26 22 007440-70-2
82 DIOXINS N.O.S. 26 17 HZ0400-05-T
82 PHENOL 26 16 000108-95-2
82 ALDRIN 26 7 000309-00-2
82 BUTYL BENZYL PHTHALATE 26 7 000085-68-7
87 1,2-DICHLOROPROPANE 25 19 000078-87-5
87 1,1,2,2-TETRACHLOROETHANE 25 18 000079-34-5
89 1,1,2-TRICHLOROETHANE 24 19 000079-00-5
90 STYRENE 24 12 000100-42-5
91 DI-N-OCTYL PHTHALATE 23 13 000117-84-0
91 HEXACHLOROCYCLOHEXANE, GAMMA- 23 13 000058-89-9
91 CRESOL, PARA- 23 9 000106-44-5
94 1,4-DICHLOROBENZENE 22 9 000106-46-7
94 HEPTACHLOR 22 6 000076-44-8
96 CHLOROMETHANE 21 12 000074-87-3
96 SEMIVOLATILE ORGANIC COMPOUNDS N.O.S. 21 12 HZ1900-02-T
98 POTASSIUM 20 16 007440-09-7
98 CHLORODIBROMOMETHANE 20 15 000124-48-1
98 1,2,4-TRIMETHYLBENZENE 20 2 000095-63-6

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