(a) Notify (using methods reasonable under the circumstances) the owner, tenant or lessee of the subject property to comply with the provisions of Section 9.16.030, Provo City Code, and if the same is not done in a reasonable period of time, to cause the same to be done and recover the costs thereof in the name of Provo City from the owner, tenant or lessee, who shall be jointly and severally liable;

(b) If debris, snow or ice on sidewalks present an immediate and unreasonable risk of harm to persons or property, have the debris, snow or ice removed forthwith from the subject sidewalks and recover the costs thereof in the name of Provo City from the owner, tenant or lessee, who shall be jointly and severally liable.