FIGURE 1.7. Aromatic hydrocarbons 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 Puyallup State Hatchery, and Nisqually Estuary. HACs = high molecular weight aromatic compounds; LACs = low molecular weight aromatic compounds. Analytes included in HACs and LACs are listed in Appendix B.

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