Keystone Sanitary Landfill has submitted an abatement plan to further address long-standing leachate contamination issues to state environmental officials, Keystone consultant Al Magnotta testified during a hearing before a state environmental board Monday.

The plan submitted Friday provides for installing three more water-monitoring wells in the vicinity of a well where contamination has been found, said Mr. Magnotta. Two of these wells will be deep enough to reach the groundwater table while the third will be a shallow well, he added.

Keystone will also conduct more “geophysical” surveys to find out if there is moisture in the soil in the contaminated area, said Mr. Magnotta.