(1) The state and local improvements revolving account is hereby created in the state treasury and shall be used exclusively for the purpose of providing funds for the planning, acquisition, construction, and improvement of public waste disposal facilities in this state.
(2) As used in this section the phrase "public waste disposal facilities" shall not include the acquisition of equipment used to collect, carry, and transport garbage.
(3) As used in this section, the term "waste disposal facilities" shall mean any facilities or systems owned or operated by a public body for the collection, storage, treatment, disposal, recycling, control, or recovery of liquid wastes or solid wastes, including, but not limited to, sanitary sewage, stormwater, residential, industrial, and commercial wastes, material segregated into recyclables and nonrecyclables, and any combination of such wastes; and all equipment, utilities, structures, real property, and interests in and improvements on real property, necessary for or incidental to such purpose.
(4) As used in this section, the term "public body" means the state of Washington or any agency, political subdivision, taxing district, or municipal corporation thereof, and those Indian tribes now or hereafter recognized as such by the federal government for participation in the federal land and water conservation program and which may constitutionally receive grants or loans from the state of Washington.