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likely to be lower in contaminants. Mercury concentrations are from incinerated wastes, <br />latex paints, and burning of fossil fuels. PCBs are synthetic oils which come from <br />electrical transformers, cutting oils, and carbonless paper. PCBs were banned in 1976 but <br />do not decompose easily and therefore remain in water and sediments for long periods. <br />Lakes in Ramsey County with advisories are Bald Eagle, White Bear, and Long. <br />2-34a <br />10/97 <br />