Michigan failed to properly consider the environmental impact of an Upper Peninsula project that plans to turn 560,000 tons of pulpwood into ethanol each year, the Sierra Club stated in a lawsuit filed this week.
In September the state Dept. of Natural Resources granted an air permit to Frontier Renewable Resources, which plans to begin constriction on a wood to ethanol bio-refinery in Kinross, Michigan.
The Associated Press reports that the Sierra Club lawsuit charges that regulators did not consider the full amount of air pollution the plant would generate.
It contends the DNRE erred by evaluating the permit application under standards meant for facilities that are minor polluters, based on Frontier’s estimate that it will give off 95 tons of carbon monoxide a year – just short of the 100-ton threshold at which tougher requirements and reviews kick in.
That total was based on an expected annual output of 40 million gallons of ethanol. But the company’s site plan makes clear it intends to double production to 80 million gallons, which would push carbon dioxide emissions well past the regulatory threshold and boost other pollution as well, the lawsuit says.
The Sierra Club also contends that though the plant will ferment wood sugars into ethanol, the emissions estimated used in the permit are based on the fermentation of corn sugars into ethanol.
The Frontier project has received $49.5 million in state and federal grants as a renewable energy demonstration project, but the Sierra Club argues that the project is not sustainable and will deplete state forests.
Also, the group says, because the ethanol production process relies on non-renewable natural gas, the Frontier project will use 33 percent more energy than will be contained in the ethanol it produces.
A copy of the complaint is available on the Sierra Club website.