Faithful performance of these specifications by the contractor is of the essence of the license unless prevented by unavoidable accident, act of God or public immunity, or any restrictions or embargoes imposed by the Federal or State government or any political subdivision or agency thereof; and it is understood and agreed that all material shall be collected, removed and disposed of in a skillful and businesslike manner, satisfactory to the Board of Supervisors.
(Ord. 48, 12/17/1992, § 124)