The City Engineer is authorized to make all of the findings necessary for approval of and to approve, conditionally approve, or disapprove parcel maps; however, no parcel map shall be approved which makes an existing building or structure substandard in respect to yard or other zoning requirements specified in this code, nor shall any existing easement in favor of the public be rendered impractical by the creation of a parcel on a parcel map. (Ord. 3153 § 2 (Exh. C), 2010).