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Potential Effects of Contaminants on Fraser River Sockeye Salmon

Potential Effects of Contaminants on Fraser River Sockeye Salmon

Potential Effects of Contaminants on Fraser River Sockeye Salmon

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Table 4.41. 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 Quesnel <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% (96) ND ND 0% (1) 0% (16) 0% (8) 0% (18)Residue N<strong>on</strong>-filterable (TSS) ND 10% (86) ND ND 0% (1) 53% (17) 0% (2) 59% (17)Turbidity ND 33% (97) ND ND ND 100% (11) 0% (6) 100% (13)NutrientsAmm<strong>on</strong>ia, dissolved ND 0% (59) ND ND ND 0% (10) 0% (3) 0% (13)Nitrate (NO 3 ), dissolved ND 0% (91) ND 0% (318) ND ND 0% (4) NDNitrogen-Nitrite, dissolved (NO 2 ) ND 0% (92) ND 0% (318) 0% (1) ND 0% (5) NDPhosphorus, total (lake) ND ND ND 85% (318) ND ND ND NDPhosphorus, total (stream) ND 96% (48) ND ND 0% (1) ND 17% (6) NDMajor I<strong>on</strong>sChloride, dissolved ND 0% (38) ND ND ND 0% (17) 0% (3) 0% (18)Sulfate, dissolved ND ND ND ND ND 0% (17) 0% (5) 11% (18)MetalsAluminum, total ND 35% (26) ND ND ND 50% (10) 0% (1) 62% (13)Arsenic, total ND 0% (28) ND ND ND 6% (16) ND 0% (15)Bor<strong>on</strong>, total ND 0% (28) ND ND ND 0% (11) ND 8% (13)Cadmium, total ND 25% (28) ND ND ND 100% (1) ND 100% (2)Chromium, total ND 18% (28) ND ND ND 9% (11) ND 31% (13)Cobalt, total ND 0% (28) ND ND ND 0% (8) ND 0% (6)Copper, total ND 20% (10) ND ND ND 35% (17) 0% (2) 41% (17)Ir<strong>on</strong>, total ND 36% (28) ND ND ND 18% (17) 0% (1) 22% (18)Lead, total ND 0% (10) ND ND ND 0% (11) 0% (2) 0% (13)Manganese, total ND 0% (10) ND ND ND 0% (16) 0% (2) 0% (17)Mercury, total ND ND ND ND ND ND ND 100% (1)T-184

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