| Figure
3.22. |
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Dissolved zinc (Zn) concentrations in water in
parts per billion (ppb) at 24 RMP stations sampled
in January, April, and August 1997. Note logarithmic
scale. Concentrations ranged from 0.12 to 11.52
ppb. The highest concentration was sampled at San
Jose (C-3-0) and the lowest at Golden Gate (BC20),
both in August. Average concentrations were highest
(9.94 ppb) in the Southern Sloughs and lowest (0.32
ppb) in the Central Bay, both in April. All samples
were below the 4-day average WQC for dissolved zinc
(saltwater 81 ppb, freshwater--hardness dependent).
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