State pollution regulators have asked Water Gremlin to immediately shut down part of its manufacturing plant near White Bear Lake, citing tests showing still more contamination.
It's the second time this year the Minnesota Pollution Control Agency (MPCA) has made that request of the company.
At a news briefing in St. Paul on Thursday, MPCA officials said the company's new air emissions control equipment is still allowing too much pollution to escape and that recent tests show that the soil, groundwater, sediment and surface water on the plant site contain two toxic industrial solvents and, in some cases, lead.
In places, concentrations of the industrial solvents in the soil vapors beneath Water Gremlin's plant were 33 times the state health limits, the MPCA said.

Water Gremlin rejected the state's conclusions, and did not shut down its coatings line by the state's 3 p.m. Thursday deadline. Instead, the company requested a meeting with MPCA Commissioner Laura Bishop at the company's facilities in White Bear Township. The MPCA said the meeting was scheduled for Monday.
MPCA officials said they are "considering further action" to compel Water Gremlin to comply, including the possibility of shutting down the entire factory. That would be a first for the agency, whose enforcement philosophy is one of working with companies to gain compliance.
"We're incredibly concerned with Water Gremlin," MPCA Assistant Commissioner Craig McDonnell said. "We have significant concerns regarding the ongoing release of DCE into the soil underneath the building. We want to determine the extent and magnitude of those contaminations to determine how to move forward."
The solvents at issue are trichloroethylene, or TCE, a carcinogen the company was ordered to stop using, and dichloroethylene, or DCE, a less toxic solvent Water Gremlin started using this spring as a TCE substitute.