Public Health Assessment for Weldon Spring Ordnance Works (Former) St. Charles,St. Charles County, Missouri, Region 7. CERCLIS No. M05210021288

摘要

The Weldon Spring Ordnance Works (WSOW), an explosives production facility, wasoperated by the Atlas Powder Company from October 1940 through August 1945. Past operations have resulted in the contamination of the environment with a variety of explosives-related compounds, including TNT, DNT, and various metals. In the past, wastewaters were discharged into lagoons where the setting of explosives occurred. From the lagoons, wastewater overflow then discharged to the facility wastewater treatment plant and from there to surface water. Contaminants also migrated into soil and the groundwater (i.e., water within the earth that supplies wells and springs) via spills and operational releases from the wastewater piping systems. ATSDR considers present groundwater and onsite soil contamination to be categorized as No Apparent Public Health Hazard, as exposure to contaminants could occur, but institutional controls have mitigated the potential for exposure to levels that might be a health hazard.