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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 5.13. 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 spawning and incubati<strong>on</strong> areas 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>cernArea <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>Quesnel <strong>River</strong>Pre-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 )ND ND ND 0% (5) 16% (503) 17% (721) 0% (1) 10% (10) ND 10% (86)ND ND ND ND 0% (363) 0% (286) 0% (5) 0% (6) ND 0% (92)Major I<strong>on</strong>sChloride, dissolved ND ND ND 0% (6) 0% (450) 0% (833) ND ND ND 0% (38)Sulfate, dissolved ND ND ND 0% (6) 0% (499) 0% (608) 0% (5) 0% (10) ND NDMetalsAluminum, total ND ND ND ND 48% (108) 62% (474) ND 100% (10) ND 35% (26)Arsenic, total ND ND ND ND 0% (76) 0% (333) ND 0% (10) ND 0% (28)Cadmium, total ND ND ND ND 3% (116) 3% (441) ND ND ND 0% (10)Chromium, total ND ND ND ND 84% (43) 24% (434) ND 100% (4) ND 18% (28)Cobalt, total ND ND ND ND 3% (31) 0% (499) ND 0% (10) ND 0% (28)Copper, total ND ND ND ND 19% (119) 5% (437) 0% (1) ND ND 0% (10)Ir<strong>on</strong>, total ND ND ND ND 31% (257) 53% (477) 100% (1) 100% (10) ND 36% (28)Lead, total ND ND ND ND 0% (113) 0% (385) 0% (1) ND ND 0% (10)Mercury, total ND ND ND ND 30% (113) 100% (37) ND ND ND NDNickel, total ND ND ND ND 0% (77) 0% (441) ND ND ND 0% (10)Selenium, total ND ND ND ND 2% (63) 3% (258) ND ND ND 0% (28)Silver, total ND ND ND ND ND 6% (322) ND 0% (4) ND 0% (28)OtherPhenols ND ND ND ND 0% (6) ND ND ND ND NDND = no data; TSS = total suspended solids.T-226

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