FIGURE 1.10. DDTs, chlordanes, and dieldrin in stomach contents of juvenile salmon. Values are mean concentrations ± SE. The p value for the statistical comparison between Hylebos fish and reference site fish is show n on the graph. n = number of analyses. ppb = parts per billion. Reference sites for chum salmon include Puyallup Tribal Hatchery, and Skokomish Estuary. Reference sites for chinook salmon include Nisqually Estuary, and Puyallup State Hatchery. The analytes included in the sum of DDTs are listed in Appendix B. Chlordanes are alpha and gamma chlordanes.

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