(1) The city adopts by reference the following rules for categorical exemptions, as supplemented in this chapter, including WAC 173-806-070 (Flexible thresholds), 173-806-080 (Use of exemptions), and 173-806-190 (Critical areas):

(2) The city adopts by reference WAC 197-11-800, entitled, “Categorical Exemptions,” but amends subsection (1)(b) to read as follows:

(b) The following types of construction shall be exempt, except when undertaken wholly or partly on lands covered by water:

(i) The construction or location of any single-family residential structures of 30 dwelling units or fewer.

(ii) The construction or location of any multifamily residential structures of less than or equal to 60 dwelling units.

(iii) The construction of a barn, loafing shed, farm equipment storage building, produce storage or packing structure, or similar agricultural structure, covering 40,000 square feet or less, and to be used only by the property owner or his or her agent in the conduct of farming the property. This exemption shall not apply to feed lots.

(iv) The construction of an office, school, commercial, recreational, service or storage building with 30,000 square feet or less of gross floor area, and with associated parking facilities and/or independent parking facility designed for 90 parking spaces or fewer.

(v) Any landfill or excavation of 1,000 or fewer cubic yards throughout the total lifetime of the fill or excavation; and any fill or excavation classified as a class I, II, or III forest practice under RCW 76.09.050 or regulations thereunder.