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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 4.33. 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 Upper <strong>Fraser</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 ND 0% (47) 0% (91) 4% (84) 0% (170)Residue N<strong>on</strong>-filterable (TSS) ND ND ND ND 100% (31) 100% (24) 89% (55) 84% (51)Turbidity ND ND ND ND 100% (31) 99% (88) 98% (56) 99% (163)NutrientsAmm<strong>on</strong>ia, dissolved ND ND ND ND 0% (9) 0% (9) 0% (17) 0% (18)Nitrate (NO 3 ), dissolved ND ND ND ND 0% (7) 0% (32) 0% (9) 0% (61)Nitrogen-Nitrite, dissolved (NO 2 ) ND ND ND ND 0% (11) 0% (32) 0% (17) 0% (61)Phosphorus, total (stream) ND ND ND ND 100% (35) 100% (34) 97% (63) 93% (70)Major I<strong>on</strong>sChloride, dissolved ND ND ND ND 0% (42) 0% (89) 0% (77) 1% (164)Fluoride, total ND ND ND ND ND 0% (22) ND 0% (40)Sulfate, dissolved ND ND ND ND 0% (33) 0% (35) 0% (60) 0% (68)MetalsAluminum, total ND ND ND ND 100% (21) 99% (72) 100% (37) 99% (137)Arsenic, total ND ND ND ND 4% (23) 0% (47) 3% (40) 0% (89)Bor<strong>on</strong>, total ND ND ND ND ND 0% (24) ND 0% (47)Cadmium, total ND ND ND ND 100% (11) 100% (72) 100% (17) 97% (134)Chromium, total ND ND ND ND 100% (17) 99% (73) 92% (26) 91% (140)Cobalt, total ND ND ND ND 50% (4) 18% (73) 13% (8) 6% (140)Copper, total ND ND ND ND 100% (23) 99% (68) 93% (40) 83% (128)Ir<strong>on</strong>, total ND ND ND ND 100% (39) 99% (73) 99% (69) 98% (140)Lead, total ND ND ND ND 70% (23) 65% (68) 58% (40) 38% (128)Manganese, total ND ND ND ND 0% (23) 0% (68) 0% (39) 0% (128)Mercury, total ND ND ND ND 100% (17) 100% (10) 100% (28) 100% (12)T-170

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