The owner/operator of a leaking underground storage tank is responsible for completing site assessment activities and propose corrective actions at sites where releases from USTs have caused subsurface contamination. Risk-based corrective action (RBCA) is utilized to categorize sites according to risk, select corrective action strategies, and facilitate completion of corrective action. EGLE is responsible for regulating the activities conducted by the owner/operator and more information can be found on EGLE’s LUST page.