A. 
The Engineering Division Chief may require a study showing the routing of a one-hundred-year storm through a proposed development and proposed storm drainage system.
B. 
Factors to be considered in requiring a one-hundred-year storm routing are size and type of development, proposed lot and road grading, proximity of streams, location of septic fields, possibility of property damage, etc. Proposed developments shall be examined individually based on the above criteria, the development impact statement, and other contributing factors.