Plans, profiles and specifications shall be prepared at the expense of the installer by a civil engineer licensed in the State of California. Design and construction of new and rehabilitated sewers shall comply with “Sanitary Sewer Design Criteria” as established by the District Engineer. (Ord. 123 §4, 2010; Ord. 72 § 1, 1991; Ord. 3 §4.2, 1973)