Figure 4. Graphs showing concentrations of total DDT and total PCBs in surficial sediments and cores. MER core samples are shown by circles, and SY core samples by triangles. Non-detections are indicated by ND or white symbols.

Figure 4.   Concentrations of total DDT and total PCBs in surficial sediments and cores. MER core samples are shown by circles, and SY core samples by triangles. Non-detections are indicated by ND or white symbols.

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