FIGURE 1.13. Comparisons of Hylebos Waterway juvenile salmon data with historical data from Commencement Bay and the Duwamish Waterway. Year of study is listed above each bar, the number (n) of composites analyzed at each site are listed below each bar. ppb = parts per billion; pmol/mg/min = picomoles/microgram/minute. BDL = below detection limits. All of the samples had concentrations that were below detection limits, therefore values were treated as if the concentration was 50% of the detection limit. Data sources: Duwamish and Commencement Bay 1989 and 1990 data from Stein et al. 1995 and Varanasi et al. 1993. Duwamish 1992 and 1993 data are from Casillas et al. unpubl. ¹

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