Local officials and citizens from southeastern Minnesota pleaded at the Capitol Tuesday for state help to halt the expansion of industrial frac sand mining until more is known about the industry's effects on air, water and public health.
During two and a half hours of public testimony at an overflowing joint Senate and House hearing, lawmakers heard a drumbeat of calls for a moratorium and statewide environmental impact review — but also assurances from industry officials that Minnesota already regulates sand mining with a far-reaching hand.
"We think the state is well situated to impose conditions on permits already," said Mike Caron, a spokesman for Tiller Corp., an aggregate and frac sand company that recently helped form the Minnesota Industrial Sand Council.
When the informational hearing concluded, Sen. John Marty, who chaired the session, said it's clear that county boards, city councils and township supervisors want help in deciding how extensively to regulate the industry before major projects are "rammed through." Some officials said they also want the state to set air-quality standards to control dust concentrations in the ambient air.
"We heard from lots of local government officials who were saying, 'We don't have the expertise,' " said Marty, DFL-Roseville. "The point is, we need to learn more."
No legislation was introduced at Tuesday's hearing, but Marty said in an interview that a moratorium might provide the breathing room necessary for the correct level of state involvement. "Let's be fair to both sides," he said. "It [a moratorium] is not meant to punish the industry. It's for fact finding."
Among state agency officials who testified, Aggie Leitheiser, assistant commissioner of the Minnesota Department of Health, said the agency is poised to provide guidance later this year on exposure limits for airborne crystalline silica, a known carcinogen that also can cause asthma and silicosis, a lung disease.
She said the state can't currently answer questions from local units of government about a variety of air and water pollutants germane to frac sand mining and processing.