TABLE I-13 Ranges of Worldwide Land-based Contributions of Hydrocarbons and Polycyclic Aromatic Hydrocarbons (PAH) to the Sea

 

 

 

Hydrocarbons (tonne yr−1)

PAH (tonne yr−1)

World Region

Coastal Zone

Description

Low

Best Est.

High

Low

Best Est.

High

North Americaa

A

No urban areas

0

0

0

0

0

0

B

Coastal

0

0

0

0

0

0

Saskatchewan

59

653

63,666

5

7

81

Subtotal

59

653

63,666

5

7

81

C

Coastal

12

128

12,471

1

1

16

St. Lawrence

33

370

36,114

3

4

46

Subtotal

45

498

48,584

4

5

62

D

Coastal

207

22,314

223,136

17

223

283

Delaware

93

932

9,320

7

9

12

Hudson

37

4,029

40,289

3

40

51

James

13

1,409

14,095

1

14

18

Potomac

3

37

3,576

0

0

5

Susquehanna

47

515

50,241

4

5

64

Subtotal

401

29,236

340,657

32

292

431

E

Coastal

136

1,502

149,368

11

15

185

Altamaha

9

103

10,083

1

1

13

Neuse

18

197

19,203

1

2

24

Roanoke

8

91

8,856

1

1

11

Santee

46

504

49,089

4

5

62

Savannah

11

119

11,630

1

1

15

Subtotal

227

2,516

245,230

18

25

311

F

Coastal

72

797

77,653

6

8

98

Alabama-Tombigbee

34

373

36,394

3

4

46

Apalachicola

37

408

39,805

3

4

50

Subtotal

143

1,578

153,852

11

16

195

G

Coastal

128

1,416

138,025

10

14

175

Gulf coast refineries

3

43

564

0

0

1

Brazos

24

271

26,376

2

3

33

Colorado (TX)

25

280

27,298

2

3

35

Mississippi

788

7,885

78,846

63

79

100

Rio Grande

75

825

80,392

6

8

102

Sabine

12

131

12,771

1

1

16

Trinity

40

444

43,239

3

4

55

Subtotal

1,096

11,294

407,510

88

113

516

Ha

Coastal and inland rivers

79

1,623

57,573

6

16

73

I

No urban areas

0

0

0

0

0

0

Ja

Coastal and inland rivers

42

864

30,658

3

9

39

K

Coastal

168

1,860

181,273

13

19

230

L

Coastal

74

815

79,468

6

8

101

Sacramento

52

573

55,813

4

6

71

San Joaquin

78

865

84,289

6

9

107

Subtotal

204

2,253

219,570

16

23

278

M

Coastal

92

1,016

99,025

7

10

125

Columbia

52

573

55,864

4

6

71

Subtotal

144

1,589

159,889

11

16

196

N

Coastal

6

65

6,333

0

1

8

O

Coastal

3

29

2,850

0

0

4

P

Coastal

7

83

8,062

1

1

10

Copper

0

0

0

0

0

0

Susitna

0

0

0

0

0

0

Subtotal

7

83

8,062

1

1

10

Q

Coastal

0

0

0

0

0

0

Yukon

0

0

0

0

0

0

Subtotala

2,502

51,653

1,832,476

200

517

2,321

Africa

 

 

178

3,673

130,317

14

37

165

Europe

 

 

2,251

46,464

1,648,387

180

465

2,088

Central America

 

 

164

3,392

120,343

13

34

152

South America

 

 

341

7,047

250,009

27

70

317

Asia

 

 

1,230

25,402

901,158

98

254

1,141

Oceania

 

 

145

2,989

106,028

12

30

134

TOTAL

 

 

6,811

140,620

4,988,699

545

1,406

6,319

NOTES: aSubtotal for North America does not include Coastal Zones in Mexico.



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