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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 4.40. 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 surface water in the Chilko <strong>River</strong> Area <str<strong>on</strong>g>of</str<strong>on</strong>g> Interest.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)Spawning & Incubati<strong>on</strong> Juvenile Rearing Smolt Outmigrati<strong>on</strong> Adult Upstream Migrati<strong>on</strong>Pre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990 Pre-1990 Post-1990C<strong>on</strong>venti<strong>on</strong>alspH 0% (6) 0% (10) 13% (8) 0% (10) 50% (2) 0% (8) 13% (8) 8% (13)Residue N<strong>on</strong>-filterable (TSS) 0% (1) 10% (10) 0% (1) 10% (10) ND 13% (8) 0% (2) 8% (12)Turbidity 100% (4) ND 100% (6) ND 100% (3) 100% (8) 88% (8) 100% (11)NutrientsNitrate (NO 3 ), dissolved 0% (3) ND 0% (4) ND ND ND ND NDNitrogen-Nitrite, dissolved (NO 2 ) 0% (5) 0% (6) 0% (6) 0% (6) ND ND 0% (1) 0% (1)Phosphorus, total (stream) 100% (6) 100% (4) 100% (7) 100% (4) 100% (3) 63% (8) 100% (9) 75% (16)Major I<strong>on</strong>sChloride, dissolved ND ND ND ND ND ND 0% (1) 0% (1)Sulfate, dissolved 0% (5) 0% (10) 0% (7) 0% (10) 0% (3) 0% (8) 0% (7) 0% (15)MetalsAluminum, total ND 100% (10) ND 100% (10) ND 100% (8) ND 92% (12)Arsenic, total ND 0% (8) ND 0% (8) ND 0% (9) ND 0% (15)Bor<strong>on</strong>, total ND 0% (10) ND 0% (10) ND 0% (1) ND 0% (2)Cadmium, total ND ND ND ND ND 22% (9) ND 13% (15)Chromium, total ND 100% (4) ND 100% (4) ND 0% (9) ND 0% (15)Cobalt, total ND 0% (10) ND 0% (10) ND 0% (9) ND 0% (15)Copper, total 0% (1) ND 0% (1) ND 100% (2) 22% (4) 67% (3) 14% (14)Ir<strong>on</strong>, total 100% (1) 100% (10) 100% (1) 100% (10) ND 100% (1) ND 100% (2)Lead, total 0% (1) ND 0% (1) ND 100% (2) 0% (9) 67% (3) 0% (14)Manganese, total ND ND ND ND 0% (1) 0% (9) 0% (2) 0% (14)Molybdenum, total 0% (1) 0% (10) 0% (1) 0% (10) ND 0% (9) ND 0% (15)Nickel, total ND ND ND ND ND 0% (9) ND 0% (14)T-182

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