Mo. Rev. Stat. § 427.011
Notwithstanding any other law to the contrary, sections 427.011 to 427.041 provide the state of Missouri with a comprehensive body of law limiting the lender's or a representative's liability for violations of any state or local laws and ordinances relating to state environmental requirements by persons or entities with or for whom the lender extended or enhanced credit, or to whom a representative has a fiduciary duty. No law of this state enacted after August 28, 1991, including any rules or regulations enacted pursuant to the power contained in said law, shall act retrospectively to impose environmental liability on representatives holding property or acting in a fiduciary capacity or lenders extending or enhancing credit secured by collateral, foreclosing, or otherwise enforcing the creditor's interest in such property, or holding such foreclosed property, provided the lenders or representatives meet the conditions of sections 427.011 to 427.041.
§ 427.011, RSMo