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Potential Effects of Contaminants on Fraser River Sockeye Salmon

Potential Effects of Contaminants on Fraser River Sockeye Salmon

Potential Effects of Contaminants on Fraser River Sockeye Salmon

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Table 4.52. Frequency <str<strong>on</strong>g>of</str<strong>on</strong>g> exceedance <str<strong>on</strong>g>of</str<strong>on</strong>g> the selected toxicity screening values for sediment in each area <str<strong>on</strong>g>of</str<strong>on</strong>g> interest in the <strong>Fraser</strong> <strong>River</strong> Basin.Chemical <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>Potential</str<strong>on</strong>g> C<strong>on</strong>cernFrequency <str<strong>on</strong>g>of</str<strong>on</strong>g> Exceedance <str<strong>on</strong>g>of</str<strong>on</strong>g> Toxicity Screening Values (total number <str<strong>on</strong>g>of</str<strong>on</strong>g> samples)Lower <strong>Fraser</strong> <strong>River</strong> Harris<strong>on</strong>/Lillooet <strong>River</strong> Lower Thomps<strong>on</strong> <strong>River</strong> South Thomps<strong>on</strong> <strong>River</strong>Pre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990Plastics-Related Chemicals (mg/kg)Bis (2-ethylhexyl) phthalate 70% (10) ND ND ND ND ND ND NDDiethyl phthalate 0% (10) ND ND ND ND ND ND NDPolychlorinated Biphenyls (PCBs; mg/kg)PCBs (total) 0% (32) 0% (42) ND ND ND ND ND NDPolycyclic Aromatic Hydrocarb<strong>on</strong>s (mg/kg)Acenaphthene 0% (10) 5% (21) ND ND ND ND ND NDAcenaphthylene 0% (10) 0% (21) ND ND ND ND ND NDAnthracene 0% (10) 0% (27) ND ND ND ND ND NDBenz(a)anthracene 10% (10) 0% (27) ND ND ND ND ND NDBenzo(a)pyrene 0% (10) 0% (27) ND ND ND ND ND NDChrysene 0% (10) 0% (27) ND ND ND ND ND NDDibenz(a,h)anthracene 40% (10) 0% (27) ND ND ND ND ND NDFluoranthene 0% (10) 0% (27) ND ND ND ND ND NDFluorene 0% (10) 0% (27) ND ND ND ND ND NDNaphthalene 0% (10) 0% (27) ND ND ND ND ND NDPhenanthrene 0% (10) 0% (27) ND ND ND ND ND NDPyrene 0% (10) 0% (27) ND ND ND ND ND NDND = no dataBolded values indicate hazard quotients >1.0.Pre-1990 includes 1990.Chemicals <str<strong>on</strong>g>of</str<strong>on</strong>g> potential c<strong>on</strong>cern with hazard quotients > 1.0 were identified as c<strong>on</strong>taminants <str<strong>on</strong>g>of</str<strong>on</strong>g> c<strong>on</strong>cern.T-207

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