(1) Operation of a solid waste disposal site subject to a solid waste permit pursuant to Chapter 70.95 RCW. The expansion, relocation, or closure of a solid waste disposal site is not exempt.

(2) Ongoing commercial operations involving mining, quarrying, excavating, processing, or stockpiling of rock, sand, gravel, aggregate, or clay if such operations are authorized by a county conditional use permit or permitted elsewhere in this code. This exemption does not apply to reclamation activities; an operation which the director determines may destabilize or undermine any adjacent or contiguous property; or an operation which the director determines may result in adverse downstream drainage impacts.

(3) Ongoing commercial agricultural activities, as follows:

(4) Site investigative work necessary for land use application submittals such as surveys, soil borings and test pits, percolation tests, and other related activities, provided the land-disturbing activity is no greater than is necessary to accomplish the work.

(5) Excavation of a well for a single-family dwelling.

(6) Excavation or filling of cemetery graves.

(7) Grading or filling of less than 50 cubic yards, provided it occurs outside a critical area and buffer and is at least two feet from a property line.

(8) Utility and related underground drainage system construction and maintenance in city rights-of-way and outside of critical areas.

(9) Excavation performed during the construction of a building for which a valid building permit has been issued.

(10) Paving or the creation of less than 2,000 square feet of impervious surface, which requires no utilities.

(11) Emergency sandbagging, diking, ditching, or similar work immediately before, during, or after periods of extreme weather conditions, including flooding, when done to protect life or property. (Ord. 1499 § 10 (Exh. H), 2021).