Federal rules urged for ballast
LANSING - Several years after Michigan and other Great Lakes states imposed tougher regulations on ships, there’s still a call by environmental groups, biologists and shippers for federal rules. State standards for ballast developed piecemeal, and Carl Lindquist, the executive director of the Superior Watershed Partnership and Land Trust based in Marquette, Mich., said they were a step in the right direction. But ballast water is still carrying invasive species, he said.
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