11-2-6: STREET GRADES:
   A.   Maximum: Street grades between six percent (6%) and ten percent (10%) will be approved only for such distances as topographical conditions make lesser grades impractical. A grade exceeding ten percent (10%) will be approved only when conclusive evidence shows that a lesser grade is impractical.
   B.   Minimum: The minimum street grade should not be less than two-tenths of one percent (0.2%).
   C.   Flat Grades: Flat grades may be considered when adjacent lots or blocks are designed for ponding storm water.
   D.   Approval Required: All grades shall be approved by the public works director. (2006 Code)