| Figure
4.6. |
|
Mercury (Hg) concentrations in sediments in parts
per million, dry weight (ppm) at 24 stations sampled
in February and August of 1997. * indicates
coarse sediment stations. Mercury concentrations
ranged from 0.023 to 0.78 ppm The highest concentration
was sampled at Coyote Creek (BA10) in February and
the lowest at San Joaquin River (BG30) in August.
Average concentrations were highest (0.39 ppm) in
the Southern Sloughs and lowest (0.03 ppm) in the
Rivers, both in August. One station in February
had concentrations above the ERM value of 0.71 ppm
Twenty stations in February and seventeen stations
in August had concentrations above the ERL value
of 0.15 ppm. |
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