LIST OF TABLES 



Table 1. The Stable Carbon Isotope Labeled Compounds 



Spiked into Each Sample 17 



Table 2 . HRGC/HRMS Operating Parameters 18 



Table 3 . Exact Masses Used for the Determination of PCDD 



and PCDF 19 



Table 4. Levels of PCDD/PCDF in Sediment Samples 20 



Table 5. Number of Peaks Quantified as PCDD/PCDF in 



Each Congener Class 22 



Table 6. Percent Recoveries of Internal Standards 23 



Table 7. Chlorine Isotope Ratios for Samples 25 



Table 8. Polychlorinated Dibenzo-p-dioxins and 



Dibenzofurans in Composited Sediment from Black 



Rock Harbor 27 



