A state judge has sided with a northern Michigan fish farming company that wants to dramatically increase production of rainbow trout on the Au Sable River, turning aside objections that the expansion would pollute the prized waterway, reports The Detroit News.

Administrative Law Judge Daniel Pulter endorsed with slight modifications a 2014 permit issued by the Department of Environmental Quality that would allow Harrietta Hills Trout Farm LLC eventually to raise its output to 300,000 pounds of trout annually at its Grayling facility -- up from 20,000 pounds a few years ago.

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