Long-Term Stewardship (LTS)

Long-term stewardship, or LTS, is the Missouri Department of Natural Resources' program for sites and properties where long-term management is needed to protect human health and the environment from contamination that remains after cleanup. The department says it tracks these sites, regularly inspects them, distributes information about them and raises public awareness. It began an LTS consolidation effort in 2012 to ensure these sites are properly managed across all related department programs. The Long-Term Stewardship Unit sits in the Environmental Remediation Program.

In a Phase I ESA

The handbook reads the department's Closed and Long-Term Stewardship Sites pages as the Missouri form of the state institutional and engineering control records that ASTM E1527-21 lists as a standard source. That pairing is the handbook's reading: the department does not call these pages a registry of controls, and its Registry page calls the E-Start map its public database of properties that have restrictions under the Missouri Environmental Covenants Act. The general reading of a controls listing is on the controls registries page. The pages read describe sites that have controls, and they do not describe one registry of every control in the state. Three Missouri details shape the search.

• LTS is the last stage. The department says LTS sites were cleaned to risk-based levels, such as residential or non-residential, and each has some tool or control to keep people living and working nearby from being exposed to what remains. The instruments themselves are explained on Risk-Based Cleanup Tools, Controls and Resources.
• The department's pages point to several places. They link a map of operating and closed solid waste processing facilities and landfills, the E-Start map, a list of hazardous waste treatment, storage and disposal facilities in long-term stewardship, and the Registry of Abandoned or Uncontrolled Hazardous Waste Sites. Search each one.
• Tank sites follow another route. The department says the Missouri Environmental Covenants Act does not apply to above ground or underground storage tank sites. Its tank guidance allows restrictive covenants as activity and use limitations at tank release sites. See Regulated Storage Tank Cleanup and Closure.

The hazardous waste TSD LTS list is for facilities that no longer treat, store for more than 90 days or dispose of hazardous waste, have closed those operations and have finished the required investigation and cleanup. The department keeps oversight to make sure activity and use limitations on the property are followed. A facility's page describes the tools and controls used in specific areas of it.

Where to look a site up

• The department's Long-Term Stewardship (LTS) page and its Closed and Long-Term Stewardship (LTS) Sites page.
• The E-Start map, which the department says is designed to provide information about all cleanups and any related tools and controls.
• The Registry of Abandoned or Uncontrolled Hazardous Waste Sites.
• The LTS Unit is at 573-526-8913 and lts@dnr.mo.gov.

Getting the file

The pages read do not give an LTS-specific records route. The department's E-Start page says copies of the department's files can be had by Sunshine Law request.

Sources

Missouri Department of Natural Resources pages, read October 8, 2026, no modified date shown:

• Long-Term Stewardship (LTS)
• Closed and Long-Term Stewardship (LTS) Sites
• Hazardous Waste Treatment, Storage and Disposal (TSD) LTS Sites
• Risk-Based Cleanup Tools, Controls and Resources
• Environmental Site Tracking and Research Tool (E-Start)
• Tanks Missouri Risk-Based Corrective Action (MRBCA)
• Registry of Abandoned or Uncontrolled Hazardous Waste Sites