Table 14 – Pathways / Quantities of Dioxins / Furans in Each of the Great Lakes

Dioxins and Furans

Superior

Michigan

Huron

Erie

Ontario

Total

Atmospheric Deposition

(g TEQ/yr) (range)

5.6

(2-17)

13.7

(5-43)

8.6

(3-25)

7.3

(2-21)

6.4

(2-18)

42

(13-124)

Depositional Flux

(µg/km2/yr)

69

238

145

284

337

172

Waterborne Inputs

(g TEQ/yr)

1.4

1.9

1.4

11

>3.9

>19.6

% Contribution from Atmospheric Sources

80

86

88

40

~62

~68