(1) Independent of the processing or issuance of any or all federal, state, and local permits for disposal of dangerous wastes, no disposal of dangerous wastes at a commercial off-site land disposal facility may be undertaken prior to July 1, 1986, unless:
(a) The disposal results from actions taken under *RCW
70.105A.060 (2) and (3), or results from other emergency situations; or
(b) Studies undertaken by the department under RCW
70A.300.270 to determine the best management practices for various waste categories under the priority waste management methods established in RCW
70A.300.260 are completed for the particular wastes or waste categories to be disposed of and any regulatory revisions deemed necessary by the department are proposed and do not prohibit land disposal of such wastes; or
(c) Final regulations have been adopted by the department that allow for such disposal.
(2) Construction of facilities used solely for the purpose of disposal of wastes that have not met the requirements of subsection (1) of this section shall not be undertaken by any developer of a dangerous waste disposal facility.
(3) The department shall prioritize the studies of waste categories undertaken under RCW
70A.300.270 to provide initial consideration of those categories most likely to be suitable for land disposal. Any regulatory changes deemed necessary by the department shall be proposed and subjected to the rule-making process by category as the study of each waste category is completed. All of the study shall be completed, and implementing regulations proposed, by July 1, 1986.
(4) Any final permit issued by the department before the adoption of rules promulgated as a result of the study conducted under RCW
70A.300.270 shall be modified as necessary to be consistent with such rules.