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Environmental clean-up complete at old Army Ammunition Plant site in Arden Hills

The $22.6 million project for demolition and soil cleaning to residential standards was a necessary step in redevelopment of the 427-acre site.

Ramsey County officials say a $22.6 million environmental cleanup of the old Army Ammunition Plant site in Arden Hills is complete.

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The 427-acre site is now closer to redevelopment; a Rice Creek Commons residential neighborhood project is in the works.

The next step is verification of the cleanup work through the Minnesota Pollution Control Agency’s Voluntary Investigation and Cleanup program and the Environmental Protection Agency. The county then will ask that the site be taken off the Superfund soil contamination list.

Meanwhile, the county will reconstruct the County Road H/I-35W interchange and work to return Rice Creek to its original route and clean land for a bike and pedestrian trail segment.

The cleanup work, completed by Carl Bolander & Sons, included removal of much material from the site including: 

  • Railroad track: 43,700 feet
  • Fencing: 39,000 feet
  • Steam/condensate ACM piping: 11,780 feet
  • Storm pipe: 38,600 feet
  • Sanitary pipe: 37,500 feet
  • Water main pipe: 48,600 feet
  • Gas main pipe: 42,000 feet

Also taken out and recycled was more than 400,000 tons of concrete and asphalt.

Officials said 93 percent of the material was recycled or reused in new roadways.