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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 4.38. 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 North Thomps<strong>on</strong> <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 ND 0% (7) ND ND 0% (28) 0% (44) 2% (58) 0% (59)Residue N<strong>on</strong>-filterable (TSS) ND 0% (5) ND ND 46% (13) 20% (44) 27% (22) 17% (59)Turbidity ND 33% (6) ND ND 50% (12) 61% (31) 54% (37) 44% (43)NutrientsAmm<strong>on</strong>ia, dissolved ND ND ND ND 0% (8) 0% (9) 0% (6) 0% (11)Nitrate (NO 3 ), dissolved ND ND ND ND ND 0% (13) 0% (11) 0% (21)Nitrogen-Nitrite, dissolved (NO 2 ) ND ND ND ND 0% (7) 0% (10) 0% (13) 0% (15)Phosphorus, total (stream) ND 86% (7) ND ND 100% (23) 82% (44) 86% (44) 73% (59)Major I<strong>on</strong>sChloride, dissolved ND 0% (6) ND ND 0% (25) 0% (44) 0% (50) 0% (59)Fluoride, total ND ND ND ND 0% (8) 0% (11) 0% (15) 0% (17)Sulfate, dissolved ND 0% (6) ND ND 0% (27) 0% (41) 0% (50) 0% (53)MetalsAluminum, total ND ND ND ND 100% (3) 91% (23) 100% (2) 61% (33)Arsenic, total ND ND ND ND 0% (1) ND 0% (3) NDBor<strong>on</strong>, total ND ND ND ND ND 0% (23) ND 0% (33)Cadmium, total ND ND ND ND ND 100% (2) 100% (1) 100% (1)Chromium, total ND ND ND ND ND 100% (3) 67% (3) 100% (6)Cobalt, total ND ND ND ND ND 23% (13) 0% (2) 20% (15)Copper, total ND ND ND ND 0% (1) 100% (3) 0% (5) 100% (3)Ir<strong>on</strong>, total ND ND ND ND 60% (5) 74% (23) 60% (10) 52% (33)Lead, total ND ND ND ND 100% (1) 100% (2) 20% (5) 100% (2)Manganese, total ND ND ND ND 0% (5) 0% (13) 0% (11) 0% (21)Molybdenum, total ND ND ND ND 0% (3) 0% (23) 0% (8) 0% (33)T-178

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