§ 160.112  PROFESSIONAL SEALS AND CERTIFICATIONS REQUIRED.
   (A)   The design of stormwater facilities, calculations for the determination of the regulatory floodplain, or calculations of the impacts of development shall meet the standards of this chapter and shall be prepared, signed, and sealed by a professional engineer. The professional engineer shall provide an opinion that the technical submittal meets the criteria required by this chapter; and
   (B)   For structures (not including earth embankments) that are subject to a differential water pressure greater than three feet the submittal shall include evidence that the subject design has been reviewed by a qualified professional who shall, as a minimum, have registration as a professional engineer. Such reviews shall include stability of the structure under design conditions considering the protection of downstream life and property in the event of a failure. When directed by the Administrator the calculations submitted for such structures shall be reviewed, signed and sealed by a registered structural engineer.
   (C)   For projects which include earth embankments which are subjected to differential water pressure the submittal shall include evidence that the embankment design and construction specifications are adequate for the design conditions. This review shall include consideration of the existing foundation soils for the embankment, the materials from which the embankment is to be constructed, compaction requirements for the embankment and protection of the embankment from failure due to overtopping. Construction and materials specifications for all such embankments shall be included with the plan set submittal. When directed by the Administrator, or when the impounded water pressure differential exceeds three feet, or when appropriate considering the volume impounded and water surface elevation differential to which the embankment is subjected, these calculations may be required to be reviewed, signed and sealed by a qualified geotechnical or structural engineer.
   (D)   A topographical map of the site, record drawings, and other required drawings shall be prepared, signed, and sealed by a professional land surveyor or professional engineer and tied to National Geodetic Vertical Datum, 1988 adjustment and any FEMA benchmarks.
(Ord. 06-0383, passed 3-15-06; Am. Ord. 19-1532, passed 1-16-19)