(b) The director shall amend the standards under subdivision (4), subsection (a), section six of this article, regarding corrective action required at facilities for the treatment, storage or disposal of hazardous waste listed or identified in rules promulgated pursuant to subdivision (2), subsection (a), section six of this article, to require that corrective action be taken beyond the facility boundary where necessary to protect human health and the environment unless the owner or operator of the facility concerned demonstrates to the satisfaction of the director that, despite the owner or operator’s best efforts, the owner or operator was unable to obtain the necessary permission to undertake such action. Such rules shall take effect immediately upon promulgation, and shall apply to:

1. (1) All facilities operating under permits issued under subdivision (4), subsection (a), section six of this article; and
2. (2) All landfills, surface impoundments and waste pile units (including any new units, replacement of existing units or lateral expansions of existing units) which receive hazardous waste after July 26, 1982. Pending promulgation of such rules the director shall issue corrective action orders for facilities referred to in subdivisions (1) and (2) above on a case-by-case basis consistent with the purposes of this subsection.