Minn. Stat. § 115B.06
Subd. 1. Application of section 115B.05.
Section 115B.05 does not apply to any claim for damages arising out of the release of a hazardous substance which was placed or came to be located in or on the facility wholly before July 1, 1983.
Subd. 2.
[Repealed, 1Sp1985 c 8 s 19]