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More than three dozen western Wisconsin residents are suing subsidiaries of a frac sand mining company that spilled 10 million gallons of wastewater into the Trempealeau River last spring.

In four separate complaints filed Monday by the same attorney, neighbors of Hi-Crush mines in Whitehall and Blair allege ongoing air, water, noise and light pollution from the mines.

According to complaints filed in Trempealeau County Circuit Court, silica dust from the mines regularly blows onto their property, violating air-quality standards, and their well water is undrinkable because of dangerous levels of arsenic and other particles.

Plaintiffs say they can’t open their windows and are subject to constant noise and light. According to the complaints, living near the mines has led to marital strife, anxiety, depression and high blood pressure.

“Hi-Crush strives every day to adhere to all applicable rules, regulations and agreements with local jurisdictions,” company spokesman Steve Bell said in a written statement. “As a Green Tier company, we recognize the importance of environmental stewardship and being a good neighbor. We take these matters seriously and will present a vigorous defense based on the facts and the law.”