Hazardous Waste Program

Underground Storage Tanks - Leaking

Immediate free product recovery is required by law

Soil contaminated with petroleum product from a leaking underground storage tank.
Soil contaminated by petroleum that leaked from an
underground storage tank.  Petroleum products stain
soil black and can contain toxic compounds such as
lead, benzene and other chemicals.

Missouri has reported over 4,900 releases from underground storage tanks in the past 10 years. Releases from USTs can cause fires or explosions that threaten human safety. Releases can also contaminate groundwater that many citizens depend on for their water supply.

The Tanks section provides technical oversight for site characterizations, and putting cleanup actions in place at regulated leaking underground storage tank sites in Missouri. This includes the review and approval of site investigation reports, corrective action plans and quarterly monitoring reports.

Workers insalling a monitoring well for site characterization.
Workers installing a monitoring well
for site characterization.

Some basic investigative and remediation technologies commonly accepted by the department include

Note icon.The Missouri Risk-Based Corrective Action (MRBCA) Process for Petroleum Storage Tanks describes the process used by the Tanks section to manage petroleum releases at petroleum storage tank sites.  The MRBCA process replaces the following guidance of the Department of Natural Resouces: Underground Storage Tank Site Characterization Guidance Document, February, 1992; the Underground Storage Tank Corrective Action Guidance Document, February, 1992; and the Underground Storage Tank Closure Guidance Document, March, 1996.

Although the operation of above ground storage tanks (AST) is not regulated by DNR, the Tanks section regulates and provides oversight of the investigation and remediation of petroleum releases caused by leaking ASTs.  For information on the operational regulation of ASTs, please contact the Missouri Department of Agriculture, 573-751-5636.

For information on remediation sites in Missouri, visit the Hazardous Waste Download Files.