Dioxin and Furan Time Trends in the U.S.
Sediment Levels, Ozette Lake, Olympic Peninsula, WA
normalized to mass accumulation rate
0
2
4
6
8
10
12
14
16
18
20
1977
1966
1955
1943
1937
1930
1923
1916
1909
1901
1720
Year
Residue Levels (pg/cm2/yr)
Total CDDs
Total CDFs
Total CDD/Fs
OCDD
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