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those bedrock units. <br />Secondary water quality standards were exceeded for dissolved manganese and for <br />sulfate. These constituents may have negative aesthetic impacts on water used for <br />domestic purposes. <br />Elevated radiochemical activities are likely associated with naturally occurring conditions <br />in the St. Charles River Alluvium. There is no indication that the elevated radiochemical <br />activities have any association with cement plant activities. <br />5