Houston County is close to adopting a permanent ban on frac-sand mining — a step that would be a first in Minnesota and a new twist in the Midwest's sand-mining boom.
The County Board adopted the ordinance 5-0 this week in a preliminary vote, and it is expected to give it final approval this month after the county attorney reviews the language.
The vote followed an emotional three-hour public meeting Wednesday, where local residents argued that industrial sand mining would destroy the county's scenic Mississippi River bluffs and perhaps contaminate their water and trout streams.
"We have plenty of documentation that there are harmful effects," said Commissioner Justin Zmyewski, who introduced the ordinance. "There are concerns about the environment and infrastructure."
Houston County, which lies just south of Interstate 90 on the western banks of the Mississippi River in the far southeastern corner of the state, is home to 19,000 people. Like much of the surrounding area in Minnesota and western Wisconsin, it has deep underground deposits of a type of sand that is ideal for hydrofracking, a process for removing oil and gas from shale rock deep underground.
Large frac-sand mines have popped up across much of western Wisconsin to supply the nation's hydrofracking boom, but mining in Minnesota has been slowed by a two-year statewide environmental regulatory review, plus temporary moratoriums in several counties and townships as local governments struggled to manage the controversy.
Those moratoriums have mostly lapsed, but several counties and townships in southeastern Minnesota have adopted new regulations to limit or manage sand mining.
Houston County, however, is the only one to implement an outright prohibition against sand mines that produce more than 60,000 yards of sand per year.