(b) The Department may adopt rules to carry out the provisions of this chapter.(c) A mobile home park that has been closed pursuant to section 6237a of this title and reduced to no more than two occupied leased lots shall be required, if the number of occupied leased lots subsequently is increased to more than two, to obtain all State land use and environmental permits required for a mobile home park that has been established or expanded after May 31, 1970.Added 1969, No. 291 (Adj. Sess.), § 7, eff. date, see note under § 6201 of this title; amended 1987, No. 76, § 8; 1987, No. 265 (Adj. Sess.), § 1; 1989, No. 229 (Adj. Sess.), § 6; 1999, No. 161 (Adj. Sess.) , § 3; 2001, No. 133 (Adj. Sess.), § 5, eff. 6/13/2002; 2007, No. 176 (Adj. Sess.), § 56; 2011, No. 137 (Adj. Sess.) , § 2, eff. 5/14/2012.