Section 3306.2 of the Uniform Building Code as adopted and maintained by the state Building Code Council is amended to read as follows:

3306.2 Exempted Work. A grading permit is not required for the following:

1. When approved by the Building Official, grading in an isolated, self-contained area if there is no danger to private or public property.

2. An excavation below finished grade for basements and footings of a building, retaining wall or other structure authorized by a valid building permit. This shall not exempt any fill made with the material from such excavation or exempt any excavation having an unsupported height greater than 5 feet (1524 mm) after the completion of such structure.

3. Cemetery graves.

4. Refuse disposal sites controlled by other regulations.

5. Excavations for wells or tunnels or utilities.

6. Mining, quarrying, excavating, processing or stockpiling of rock, sand, gravel, aggregate or clay where established and provided for by law, provided such operations do not affect the lateral support or increase the stresses in or pressure upon any adjacent or contiguous property.

7. Exploratory excavations under the direction of soil engineers or engineering geologists.

8. An excavation that (1) is less than 3 feet (915 mm) in depth or (2) does not create a cut slope greater than 6 feet (1829 mm) in height and steeper than 1 unit vertical in 1½ units horizontal (66.7% slope).

9. A fill less than 2 feet (610 mm) in depth and placed on natural terrain with a slope flatter than 1 unit vertical in 5 units horizontal (20% slope), or less than 4 feet (1219 mm) in depth, not intended to support structures, that does not exceed 100 cubic yards (76.6 m3) on any one lot and does not obstruct a drainage course.

10. Test holes done under the provisions of an on-site sewage disposal permit application.

11. Grading, including roads, bridges and municipal construction, which is designed to WSDOT, APWA or FHWA standards and specification where such grading is subject to review and approval of a local government agency or a state or federal agency.

12. When approved by the Building Official, temporary grading work necessary to protect property.

13. Grading work which:

(1) Is not intended to support structures, and

(2) Is subject to permitting requirements of other regulations.

Exemption from the permit requirements of this chapter shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this chapter or any other laws or ordinances of this jurisdiction. (Ord. 2001-24 § 17, 2001).