All grading construction and/or maintenance operations in or contiguous to residential neighborhoods shall be carried on between the hours of seven o'clock (7:00) A.M. and seven o'clock (7:00) P.M. The public works director may authorize operations at other hours only if it is shown that restricting the hours of operation would unduly interfere with the development of the property or if operations must be done at times that would minimize traffic or other interference, and if it is shown that the neighboring properties would not be adversely affected. (Ord. 754, 2016)