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Potential Effects of Contaminants on Fraser River Sockeye Salmon

Potential Effects of Contaminants on Fraser River Sockeye Salmon

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Table 5.16. 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 threshold for surface water in adult upstream migrati<strong>on</strong> routes in the <strong>Fraser</strong> <strong>River</strong> Basin.C<strong>on</strong>taminant <str<strong>on</strong>g>of</str<strong>on</strong>g>C<strong>on</strong>cernAreas <str<strong>on</strong>g>of</str<strong>on</strong>g> InterestLower <strong>Fraser</strong> <strong>River</strong> Upper <strong>Fraser</strong> <strong>River</strong> Pitt <strong>River</strong> Cultus LakeKakawa LakePre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990C<strong>on</strong>venti<strong>on</strong>als (mg/L)Residue: N<strong>on</strong>filterable(TSS)NutrientsNitrogen - Nitrite,dissolved (NO 2 )75% (69) 100% (19) 89% (55) 84% (51) 40% (10) 70% (10) ND 3% (36) 0% (8) ND0% (10) 0% (73) 0% (17) 0% (61) 0% (10) 0% (20) ND 3% (60) 0% (10) NDMajor I<strong>on</strong>sChloride, dissolved 0% (63) 0% (176) 0% (77) 1% (164) ND ND ND 0% (42) 0% (11) NDSulfate, dissolved 0% (61) 0% (73) 0% (60) 0% (68) ND ND ND 0% (39) 0% (7) NDMetalsAluminum, total 100% (9) 94% (161) 100% (37) 99% (137) 80% (10) ND ND 38% (13) ND NDArsenic, total 0% (43) 0% (103) 0% (40) 0% (89) ND ND ND 0% (25) 0% (1) NDCadmium, total 23% (43) 1% (137) 8% (40) 1% (128) ND ND ND 0% (8) 0% (1) NDChromium, total 100% (17) 88% (162) 92% (26) 91% (140) ND ND ND 39% (23) ND NDCobalt, total ND 0% (165) 0% (8) 0% (140) ND ND ND 0% (25) ND NDCopper, total 42% (43) 28% (137) 53% (40) 21% (128) ND ND ND 0% (8) 0% (7) NDIr<strong>on</strong>, total 98% (58) 95% (165) 99% (69) 98% (140) 60% (10) ND ND 100% (25) 33% (6) NDLead, total 2% (43) 0% (137) 0% (40) 1% (128) ND ND ND 0% (8) 0% (7) NDMercury, total 100% (41) 100% (11) 58% (36) 100% (11) ND ND ND ND ND NDNickel, total 0% (12) 1% (137) 0% (20) 0% (128) ND ND ND 0% (8) 0% (7) NDSelenium, total 0% (43) 0% (87) 0% (40) 0% (84) ND ND ND 0% (20) ND NDSilver, total ND 4% (114) ND 2% (102) ND ND ND 0% (20) ND NDOtherPhenols ND ND 3% (29) ND ND ND ND ND ND NDND = no data; TSS = total suspended solids.T-234

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