Appendix 2.1 Graphs Showing Data Distributions for Organic 

Contaminants in Water Sampled in Response to the Deepwater 

Horizon Oil Spill, 2010

1,1,1,2-Tetrachloroethane....................................................................................................................................................................................... 7

1,1,1-Trichloroethane............................................................................................................................................................................................... 7

1,1,2,2-Tetrachloroethane....................................................................................................................................................................................... 8

1,1,2-Trichloro-1,2,2-trifluoroethane ..................................................................................................................................................................... 8

1,1,2-Trichloroethane............................................................................................................................................................................................... 9

1,1-Dichloroethane .................................................................................................................................................................................................. 9

1,1-Dichloroethene ................................................................................................................................................................................................ 10

1,1-Dichloropropene.............................................................................................................................................................................................. 10

1,2,3,4-Tetramethylbenzene.................................................................................................................................................................................. 11

1,2,3,5-Tetramethylbenzene.................................................................................................................................................................................. 11

1,2,3-Trichlorobenzene.......................................................................................................................................................................................... 12

1,2,3-Trichloropropane .......................................................................................................................................................................................... 12

1,2,3-Trimethylbenzene ......................................................................................................................................................................................... 13

1,2,4-Trichlorobenzene.......................................................................................................................................................................................... 13

1,2,4-Trimethylbenzene ......................................................................................................................................................................................... 14

1,2-Dibromo-3-chloropropane ............................................................................................................................................................................. 14

1,2-Dibromoethane ................................................................................................................................................................................................ 15

1,2-Dichlorobenzene.............................................................................................................................................................................................. 15

1,2-Dichloroethane ................................................................................................................................................................................................ 16

1,2-Dichloropropane.............................................................................................................................................................................................. 16

1,2-Diphenylhydrazine........................................................................................................................................................................................... 17

1,3,5-Trimethylbenzene ......................................................................................................................................................................................... 17

1,3-Dichlorobenzene.............................................................................................................................................................................................. 18

1,3-Dichloropropane.............................................................................................................................................................................................. 18

1,4-Dichlorobenzene.............................................................................................................................................................................................. 19

2,2-Dichloropropane.............................................................................................................................................................................................. 19

2,4,5-Trichlorophenol............................................................................................................................................................................................. 20

2,4,6-Trichlorophenol............................................................................................................................................................................................. 20

2,4-Dichlorophenol................................................................................................................................................................................................. 21

2,4-Dimethylphenol................................................................................................................................................................................................ 21

2,4-Dinitrophenol.................................................................................................................................................................................................... 22

2,4-Dinitrotoluene................................................................................................................................................................................................... 22

2,6-Dinitrotoluene................................................................................................................................................................................................... 23

2-Chloronaphthalene............................................................................................................................................................................................. 23

2-Chlorophenol....................................................................................................................................................................................................... 24

2-Chlorotoluene...................................................................................................................................................................................................... 24

2-Ethyltoluene......................................................................................................................................................................................................... 25

2-Methyl-4,6-dinitrophenol................................................................................................................................................................................... 25
4 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 

2-Methylnaphthalene............................................................................................................................................................................................ 26

2-Napthylamine...................................................................................................................................................................................................... 26

2-Nitrophenol.......................................................................................................................................................................................................... 27

3,3'-Dichlorobenzidine .......................................................................................................................................................................................... 27

3-Chloropropene .................................................................................................................................................................................................... 28

3-Nitroaniline.......................................................................................................................................................................................................... 28

4-Bromophenyl phenyl ether................................................................................................................................................................................ 29

4-Chloro-3-methylphenol...................................................................................................................................................................................... 29

4-Chloroaniline ....................................................................................................................................................................................................... 30

4-Chlorophenyl phenyl ether................................................................................................................................................................................ 30

4-Chlorotoluene...................................................................................................................................................................................................... 31

4-Isopropyltoluene................................................................................................................................................................................................. 31

4-Nitroaniline.......................................................................................................................................................................................................... 32

4-Nitrophenol.......................................................................................................................................................................................................... 32

Acenaphthene........................................................................................................................................................................................................ 33

Acenaphthylene..................................................................................................................................................................................................... 33

Acetone ................................................................................................................................................................................................................... 34

Acetophenone........................................................................................................................................................................................................ 34

Acrylonitrile............................................................................................................................................................................................................. 35

Anthracene ............................................................................................................................................................................................................. 35

Atrazine.................................................................................................................................................................................................................... 36

Benzaldehyde......................................................................................................................................................................................................... 36

Benzene................................................................................................................................................................................................................... 37

Benzo[a]anthracene.............................................................................................................................................................................................. 37

Benzo[a]pyrene...................................................................................................................................................................................................... 38

Benzo[b]fluoranthene............................................................................................................................................................................................ 38

Benzo[g,h,i]perylene.............................................................................................................................................................................................. 39

Benzo[k]fluoranthene............................................................................................................................................................................................ 39

Benzyl n-butylphthalate........................................................................................................................................................................................ 40

Biphenyl................................................................................................................................................................................................................... 40

Bis(2-chloroethyl)ether......................................................................................................................................................................................... 41

Bis(2-chloroisopropyl) ether................................................................................................................................................................................ 41

Bis-2-chloroethoxymethane................................................................................................................................................................................. 42

Bis-2-ethylhexylphthalate..................................................................................................................................................................................... 42

Bromobenzene ....................................................................................................................................................................................................... 43

Bromochloromethane ........................................................................................................................................................................................... 43

Bromodichloromethane........................................................................................................................................................................................ 44

Bromoethene.......................................................................................................................................................................................................... 44

Bromomethane....................................................................................................................................................................................................... 45

Caprolactam............................................................................................................................................................................................................ 45

Carbazole................................................................................................................................................................................................................. 46

Carbon disulfide ..................................................................................................................................................................................................... 46

Chlorobenzene........................................................................................................................................................................................................ 47

Chloroethane .......................................................................................................................................................................................................... 47

Chloromethane....................................................................................................................................................................................................... 48

Chrysene.................................................................................................................................................................................................................. 48

cis-1,2-dichloroethene.......................................................................................................................................................................................... 49

cis-1,3-dichloropropene........................................................................................................................................................................................ 49
Appendix 2.1 5

Cyclohexane ........................................................................................................................................................................................................... 50

Di-n-butyl phthalate............................................................................................................................................................................................... 50

Di-n-octyl phthalate............................................................................................................................................................................................... 51

Dibenzo[a,h]anthracene ....................................................................................................................................................................................... 51

Dibenzofuran........................................................................................................................................................................................................... 52

Dibromochloromethane........................................................................................................................................................................................ 52

Dibromomethane.................................................................................................................................................................................................... 53

Dichlorodifluoromethane...................................................................................................................................................................................... 53

Dichloromethane.................................................................................................................................................................................................... 54

Diesel range organics........................................................................................................................................................................................... 54

Diethyl ether............................................................................................................................................................................................................ 55

Diethyl phthalate.................................................................................................................................................................................................... 55

Diisopropyl ether.................................................................................................................................................................................................... 56

Dimethyl phthalate................................................................................................................................................................................................. 56

Dissolved organic carbon..................................................................................................................................................................................... 57

Ethyl methacrylate................................................................................................................................................................................................. 57

Ethyl methyl ketone................................................................................................................................................................................................ 58

Ethylbenzene........................................................................................................................................................................................................... 58

Fluoranthene........................................................................................................................................................................................................... 59

Fluorene................................................................................................................................................................................................................... 59

Gasoline range organics (C6-C10) ...................................................................................................................................................................... 60

Hexachlorobenzene............................................................................................................................................................................................... 60

Hexachlorobutadiene............................................................................................................................................................................................ 61

Hexachlorocyclopentadiene................................................................................................................................................................................ 61

Hexachloroethane ................................................................................................................................................................................................. 62

Indeno[1,2,3-cd]pyrene......................................................................................................................................................................................... 62

Iodomethane........................................................................................................................................................................................................... 63

Isobutyl methyl ketone.......................................................................................................................................................................................... 63

Isophorone.............................................................................................................................................................................................................. 64

Isopropylbenzene................................................................................................................................................................................................... 64

m- plus p-Cresol..................................................................................................................................................................................................... 65

m- plus p-Xylene .................................................................................................................................................................................................... 65

Methyl acetate ....................................................................................................................................................................................................... 66

Methyl acrylate ...................................................................................................................................................................................................... 66

Methyl acrylonitrile................................................................................................................................................................................................ 67

Methyl methacrylate ............................................................................................................................................................................................. 67

Methyl tert-butyl ether.......................................................................................................................................................................................... 68

Methyl tert-pentyl ether........................................................................................................................................................................................ 68

Methylcyclohexane............................................................................................................................................................................................... 69

n-Butyl methyl ketone ........................................................................................................................................................................................... 69

n-Butylbenzene ...................................................................................................................................................................................................... 70

N-Nitrosodi-n-propylamine.................................................................................................................................................................................. 70

N-Nitrosodimethylamine....................................................................................................................................................................................... 71

N-Nitrosodiphenylamine....................................................................................................................................................................................... 71

n-Propylbenzene.................................................................................................................................................................................................... 72

Napthalene.............................................................................................................................................................................................................. 72

Nitrobenzene .......................................................................................................................................................................................................... 73

o-Cresol ................................................................................................................................................................................................................... 73
6 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 

o-Xylene................................................................................................................................................................................................................... 74

Oil Range Organics (C28-C35).............................................................................................................................................................................. 74

Oil and grease......................................................................................................................................................................................................... 75

Organics (C8 to C36) .............................................................................................................................................................................................. 75

Pentachlorophenol ................................................................................................................................................................................................ 76

Phenanthrene......................................................................................................................................................................................................... 76

Phenol ..................................................................................................................................................................................................................... 77

Pyrene ..................................................................................................................................................................................................................... 77

sec-Butylbenzene.................................................................................................................................................................................................. 78

Styrene..................................................................................................................................................................................................................... 78

tert-Butyl ethyl ether............................................................................................................................................................................................. 79

tert-Butylbenzene .................................................................................................................................................................................................. 79

Tetrachloroethene ................................................................................................................................................................................................. 80

Tetrachloromethane .............................................................................................................................................................................................. 80

Tetrahydrofuran...................................................................................................................................................................................................... 81

Toluene .................................................................................................................................................................................................................... 81

trans-1,2-dichloroethene...................................................................................................................................................................................... 82

trans-1,3-dichloropropene.................................................................................................................................................................................... 82

trans-1,4-Dichloro-2-butene................................................................................................................................................................................. 83

Tribromomethane................................................................................................................................................................................................... 83

Trichloroethene ...................................................................................................................................................................................................... 84

Trichlorofluoromethane ........................................................................................................................................................................................ 84

Trichloromethane................................................................................................................................................................................................... 85

Vinyl chloride.......................................................................................................................................................................................................... 85

Xylene (all isomers) ............................................................................................................................................................................................... 86
Appendix 2.1 7
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42 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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44 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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46 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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48 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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50 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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52 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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54 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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56 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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58 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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60 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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64 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill 
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86 Contaminants in Water and Sediment Sampled in Response to the Deepwater Horizon Oil Spill