Minn. Stat. § 115A.936: CONSTRUCTION DEBRIS AS COVER MATERIAL PROHIBITED.

(a) Construction debris or residuals from processed construction debris containing any amount of gypsum shall not be managed as cover material at disposal facilities unless:

(1) residual material is managed in an industrial or construction and demolition disposal facility equipped with a liner and leachate collection system;

(2) residual material is not mechanically pulverized or size-reduced prior to processing, screening, or application;

(3) a maximum effort is made to remove gypsum from the waste prior to processing, screening, or application;

(4) residual material is mixed at a ratio of one part soil to one part residual material prior to application; and

(5) the disposal facility does not accept any amount of cover material greater than what is operationally necessary.

(b) For the purposes of this section, "residual material" means construction debris or residuals from processed construction debris containing any amount of gypsum.