After approval of a tentative map, before commencement of any construction work, and before filing a final map or a parcel map, the subdivider shall submit to the Public Works Department improvement plans prepared under the direction of and signed by a registered civil engineer licensed by the State of California.

Improvement plans shall include but not be limited to grading, storm drains, sidewalks, curb and gutter, landscaping, streets, and related facilities. (Ord. 5793-NS § 2 (part), 1987)