Proceedings - Teaching and Learning Centre - Simon Fraser ...

Fraser River Action Plan 3rd Research Workshop
Concentration (pg/g)
Concentration (pg/g)
25
20
15
10
5
0
25
20
15
10
5
0
Oct-90* Oct-92 Feb-93 Nov-93 Nov-94
10
Shelley Woodpecker Marguerite Yale
* October 1990 data provided by George Derksen, Environment Canada
Page 75
2,3,7,8-T4CDD
Pre-Abatement
ND ND ND ND ND 0.3 0.8 ND
ND 0.8 0.2 ND ND 0.5 0.1 ND
ND ND 0.1 0.2 ND
23
0.7
4.8
0.1
Shelley Woodpecker Marguerite Yale
3.8
2,3,7,8-T4CDF
Pre-Abatement
6.1
0.9 3.6 1.1 3.8
0.3 4.2 0.5 3.1
Pre- and Post- Abatement Levels of 2,3,7,8-TCDD and 2,3,7,8-TCDF
in Suspended Sediments from the Fraser River