Representatives from the Air Force Real Property Agency say efforts to clean up the former Galena base are well ahead of schedule.
When the project began nearly two years ago, over sixty sites had been marked as areas of concern.
Sample data on soil from those sites are now in the analysis stage.
18 other potential sites of concern had not even been investigated, but the Air Force is now close to having completed those investigations.
Environmental Coordinator Al Weilbacher says the work done over the past two years usually takes much longer.
The Air Force next plans to perform a feasibility study to determine the best way to clean up the contamination.
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Jeremy Scott is a reporter at KIYU in Galena.