Hazardous Waste Treatment, Storage and Disposal (TSD) LTS Sites

According to applicable state and federal hazardous waste laws and regulations, all hazardous waste treatment, storage and disposal facilities are required to investigate and clean up hazardous waste releases to the environment from their facility resulting from present and past hazardous waste handling practices. Long-term stewardship, or LTS, sites are in the last stage of the remediation (cleanup) process. For various reasons, some contaminated properties cannot be cleaned up to pristine conditions. In some instances, it is not financially or physically possible to clean up the property to its original conditions. Using risk-based corrective action, or cleanup, the department also allows some properties to be cleaned to risk-based levels, such as residential or non-residential, based partly on current and future land uses. In order to protect people living and working on or near these sites from being exposed to the contamination, the property owner and department, and in some instances the U.S. Environmental Protection Agency (EPA), put specific risk-based cleanup tools or controls in place, such as engineered controls, institutional controls or other legal instrument. The department, through long-term stewardship, makes sure these tools and controls remain in place until they are no longer needed.

Listed below are facilities that no longer treat, store (for more than 90 days) or dispose hazardous waste in Missouri, have closed their hazardous waste management operations and completed the required investigation and cleanup activities. However, the department continues to provide oversight to make sure activity and use limitations placed on the property remain in place and are followed. You can “click” on the facility’s name for more information about that facility and the tools and controls being used in specific areas of that facility. For information about other properties in Missouri undergoing long-term stewardship, visit the department's Closed and Long-Term Stewardship (LTS) Sites webpage. These facilities are also included in the department's Environmental Site Tracking and Research Tool (E-Start) interactive map, which allows users to access information about LTS sites, as well as site investigations and cleanups and certain regulated sites within a specific community or area. The U.S. Environmental Protection Agency’s Envirofacts database includes similar information, but for facilities EPA is providing oversight and facilities that no longer require oversight. Envirofacts provides information about environmental activities that may affect air, water or land anywhere in the United States. 

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