| Figure
3.9. |
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Total chromium (Cr) concentrations in water in
parts per billion (ppb) at 24 RMP stations sampled
in January, April, and August 1997. Concentrations
ranged from 0.30 to 52.55 ppb. The highest concentration
was sampled at Petaluma River (BD15) in January
and the lowest at Golden Gate (BC20) in April. Average
concentrations were highest (35.03 ppb) in the Southern
Sloughs in January and lowest (1.22 ppb) in the
Central Bay in April. Twenty samples were above
the 4-day average WQO for total chromium (saltwater
50 ppb, freshwater 11 ppb). |
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