FIGURE 1.11. Heptachlor, lindane, and aldrin 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 shown 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. BDL = below detection limits. Some or all of the samples in this group had concentrations that were below detection limits. Detection limits vary depending on the sample size; detection limits for individual samples are given in the case narrative. Samples with values below detection limits were treated as if the concentration was 50% of the detection limit.

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