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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 4.37. 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 Lower 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 ND ND 2% (47) 0% (80) 0% (159) 0% (154) 0% (159)Residue N<strong>on</strong>-filterable (TSS) ND ND ND ND 60% (43) 80% (115) 10% (59) 32% (93)Turbidity ND ND ND 23% (43) 96% (56) 93% (137) 53% (89) 59% (131)NutrientsAmm<strong>on</strong>ia, dissolved ND ND ND 0% (23) 0% (13) 0% (89) 0% (37) 0% (90)Nitrate (NO 3 ), dissolved ND ND ND 0% (28) 0% (14) 0% (24) 0% (37) 0% (44)Nitrogen-Nitrite, dissolved (NO 2 ) ND ND ND 0% (21) 0% (62) 0% (65) 0% (97) 0% (51)Phosphorus, total (lake) ND ND ND 26% (43) 100% (12) 94% (16) 100% (18) 83% (35)Phosphorus, total (stream) ND ND ND ND 100% (70) 100% (98) 92% (130) 96% (106)Major I<strong>on</strong>sChloride, dissolved ND ND ND 0% (43) 0% (29) 0% (102) 0% (97) 0% (134)Fluoride, total ND ND ND 0% (9) 0% (5) ND 0% (12) 0% (2)Sulfate, dissolved ND ND ND 0% (40) 0% (26) 0% (93) 0% (67) 0% (118)MetalsAluminum, total ND ND ND ND 100% (4) 100% (7) 67% (6) 60% (10)Arsenic, total ND ND ND ND 0% (1) 100% (1) 0% (3) 100% (1)Bor<strong>on</strong>, total ND ND ND ND ND 0% (7) ND 0% (10)Cadmium, total ND ND ND ND ND ND 100% (1) NDChromium, total ND ND ND ND 100% (1) 100% (6) 80% (5) 100% (8)Cobalt, total ND ND ND ND ND 0% (7) 0% (2) 13% (8)Copper, total ND ND ND ND 25% (4) ND 10% (10) 100% (1)Ir<strong>on</strong>, total ND ND ND ND 86% (7) 100% (7) 31% (16) 60% (10)Lead, total ND ND ND ND 33% (3) ND 11% (9) NDManganese, total ND ND ND ND 0% (5) ND 0% (14) 0% (2)T-176

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