The department of ecology, in consultation with the appropriate committees of the house of representatives and of the senate, shall:
(1) Continue evaluation of information and research on acid deposition in the Pacific Northwest region;
(2) Establish critical levels of acid deposition and lake, stream, and soil acidification; and
(3) Notify the legislature if acid deposition or lake, stream, and soil acidification reaches the levels established under subsection (2) of this section.