After years of investigation and some limited cleanup, an old Dundalk area dumping ground containing toxic wastes is due for federal attention now.

The Environmental Protection Agency announced today (3/13) that it is adding the Sauer Dump to the National Priorities List, also known as Superfund, because the soil and wetland sediment on the 2.5-acre site contain high concentrations of lead, PCBs and other hazardous chemicals.

The partly wooded tract on Back River was originally marshland that was filled in by a past owner, according to EPA. Toxic substances were deposited there while it operated as a dump from the 1960s through the 1980s. A number of homes are nearby.

State and federal regulators have been investigating and studying the site since the mid-1980s.  The property's owner was ordered to fence it off in 2005, cover "hot spots" with highly contaminated soil and stabilize shoreline erosion.  The EPA proposed it for Superfund priority cleanup a year ago.

The Sauer dump is one of nine sites nationwide that EPA is adding to its Superfund list.  For more, go here.