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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 5.15. 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 water in smolt outmigrati<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 Thomps<strong>on</strong> <strong>River</strong> North Thomps<strong>on</strong> <strong>River</strong> South Thomps<strong>on</strong> <strong>River</strong>Chilko <strong>River</strong>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 )60% (43) 80% (115) 46% (13) 20% (44) 0% (27) 9% (33) ND 13% (8)0% (62) 0% (65) 0% (7) 0% (10) 2% (52) 0% (10) ND NDMajor I<strong>on</strong>sChloride, dissolved 0% (29) 0% (102) 0% (25) 0% (44) 0% (37) 0% (33) ND NDSulfate, dissolved 0% (26) 0% (93) 0% (27) 0% (41) 0% (30) 0% (29) 0% (3) 0% (8)MetalsAluminum, total 100% (4) 100% (7) 100% (3) 91% (23) 100% (8) 80% (25) ND 100% (8)Arsenic, total 0% (1) 0% (7) 0% (1) 0% (11) ND 0% (12) ND 0% (9)Cadmium, total ND ND ND 100% (13) ND 100% (14) 0% (1) 0% (9)Chromium, total 100% (1) 100% (6) ND 100% (3) ND 100% (6) ND 0% (9)Cobalt, total ND 0% (7) ND 0% (23) ND 0% (25) ND 0% (9)Copper, total 25% (4) ND 0% (1) 75% (4) ND 80% (5) 100% (2) 0% (9)Ir<strong>on</strong>, total 86% (7) 100% (7) 60% (5) 74% (23) 38% (8) 36% (25) ND 100% (1)Lead, total 0% (4) ND 0% (1) 100% (2) ND ND 0% (2) 0% (9)Mercury, total 0% (6) ND ND ND 0% (1) ND ND NDNickel, total ND ND ND 0% (13) ND 7% (14) ND 0% (9)Selenium, total 0% (1) ND 0% (1) ND ND ND ND 0% (9)Silver, total ND ND ND ND ND ND ND 0% (9)OtherPhenols 0% (5) ND ND ND 0% (1) ND ND NDND = no data; TSS = total suspended solids.T-232

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