Any antenna or tower that is not operated for a continuous period of twelve (12) months shall be considered abandoned, and the owner of such antenna or tower shall remove the same within ninety (90) days of receipt of notice from the Township of Mahwah notifying the owner of such abandonment. Failure to remove an abandoned antenna or tower within said ninety (90) days shall be grounds to remove the tower or antenna at the owner's expense. If there are two (2) or more users of a single tower, then this provision shall not become effective until all users cease using the tower. The Township may condition the issuance of any permit to demolish or remove a tower or antenna on the posting of an appropriate performance bond or other suitable guarantee in a face amount of not less than one hundred twenty (120%) percent of the cost (as determined by the Board Engineer) of such removal, grading and restoration to a state required under all applicable Township Ordinances, including but not limited to the Township Property Maintenance Code.