Average copper (Cu) concentrations in sediments
for each Estuary reach from 1991-1997. Data
for February 1997 in the Rivers and Northern Estuary
are missing because blanks were contaminated. The
February 1997 Central Bay copper average consists
of only one sample because blanks were contaminated.
The February and August 1997 South Bay data are
incomplete due to contaminated blanks. The February
1997 Coarse Sediment Station average consists of
2 samples because blanks were contaminated.