| Figure
3.27. |
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Total PCB concentrations in water (ppq) at 16
RMP stations sampled in January, April, and August
1997. Concentrations ranged from 77 to 4,547
ppq (see Appendix B for MDLs). The highest
concentration was sampled at Coyote Creek (BA10)
in April and the lowest at Golden Gate (BC20) in
January. Average concentrations were highest (1,518
ppq) in the South Bay in April and lowest (118 ppq)
in the Rivers in January. US EPA-NTR PCB (Aroclor-based)
criteria are 14,000 ppq for freshwater aquatic life,
30,000 ppq for saltwater aquatic life, and 170 ppq
for human health (consumption of organisms only).
Nine stations in January were above the human health
criterion, fourteen stations in April, and fifteen
stations in August. |
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