Hydraulic fluids, greases, and other industrial lubricants purchased by or used under the direction of the board of directors to provide services to a merged area shall be purchased in compliance with the preference requirements for purchasing biobased hydraulic fluids, greases, and other industrial lubricants as provided pursuant to section 8A.316 . 98 Acts, ch 1082, §4 ; 2000 Acts, ch 1109, §4 ; 2003 Acts, ch 145, §227 ; 2011 Acts, ch 25, §21