(1) That portion of section numeration appearing after the chapter designation appears in either a three digit or a five digit format (e.g. WAC 296-24-330 and 296-24-30002). The final two digits of the section number are implied decimal extensions of the first three digits and represent a further division of the three digit enumeration.

(2) Sections of this chapter may be divided into subsections (1), (2), (3), etc., which may in turn be divided into subdivisions (a), (b), (c), etc., which may be further divided into items (i), (ii), (iii), etc., which may be further divided into subitems (A), (B), (C), etc., which may be further divided into segments (aa) [(I)], (bb) [(II)], (cc) [(III)], etc., all according to the following hierarchy, e.g.