North County site: Team working in last phase of former Ballfields

U.S. Army Corps of Engineers, St. Louis District, Formerly Utilized Sites Remedial Action Program (FUSRAP)
Published April 1, 2023

Through its environmental-remediation program, the Formerly Utilized Sites Remedial Action Program (FUSRAP), the U.S. Army Corps of Engineers (USACE), St. Louis District, continues to remediate the former Ballfields, also called Investigational Area (IA)-09, located on James S. McDonnell Boulevard across from the St. Louis Airport Site (SLAPS).

Because of its 60-acre size, the former Ballfields site was split into four phases: Phases 1, 2, 2B and 3. Phases 1, 2 and 2B are complete and meet remediation goals (as specified in the Record of Decision found at with the removal of 74,555 cubic yards (CY) of contaminated material.

The Phase 3 area is adjacent to Coldwater Creek and was historically built up with clean off-site soil by others to prevent flooding. This backfill ranges from 4 to 12 feet thick. USACE has removed more than 45,000 CY of clean overburden soil during Phase 3 to be able to excavate the contaminated soils below. USACE scans and samples the overburden soil to ensure it is clean before using it as backfill at the former Ballfields.

The FUSRAP team continues to remove contaminated soils from former Ballfields Phase 3. As of March 16, the current total removed from former Ballfields Phase 3 is 42,720 CY.