Abandonment and Removal. Any PWSF that is not operated for a continuous period of 18 months shall be considered abandoned, and the owner of such PWSF shall remove same within 90 days of notice to the City of Compton Building Department that the PWSF is abandoned. If such PWSF is not removed within said 90 days, the City of Compton may have the PWSF removed as the PWSF owner's expense.