( KTRS ) Four members of Missouri’s congressional delegation want the Army Corps of Engineers to take over ‘clean up’ of the West Lake Landfill site in St. Louis County, saying the Environmental Protection Agency is moving too slowly in addressing concerns about contamination.

Senators Roy Blunt and Claire McCaskill and U.S. reps. Ann Wagner and William Lacy Clay on Thursday introduced legislation to put the site in the Corps’ Formerly Utilized Sites Remedial Action Program.

West Lake was contaminated 40 years ago after a contractor for a uranium processing company illegally dumped waste there. It was declared a Superfund site in 1990.