| Figure
4.5. |
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Lead (Pb) concentrations in sediment in parts
per million, dry weight (ppm) at 24 stations sampled
in February and August of 1997. * indicates
coarse sediment stations. NA indicates data not
available. Lead concentrations ranged from 4.8 to
35 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 (33.3 ppm) in the Southern Sloughs
and lowest (6.1 ppm) in the Rivers, both in August.
All stations had concentrations below the ERM value
of 218 ppm and the ERL value of 46.7 ppm. |
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