(A) All residential properties in the city shall be graded or filled so that the property drains towards a permanent storm drainage, street or permanent body of water prior to construction of improvements thereon, in order to eliminate flooding due to sudden and heavy rainfall.
(B) Drainage facilities shall be designed so as to retain the first inch of runoff onsite and post development runoff shall not exceed the pre-development run off rate for a 25-year storm event, up to and including an event with a 24-hour duration. Channeling stormwater runoff directly into water bodies, coastal wetlands, living marine resource habitats and located near an estuary or estuaries systems or other water bodies within the city limits shall be designed so that the shorelines are sinuous rather than straight and so that water/land interferes are curvilinear and maximize space for growth of littoral vegetation.
(C) The developer or owner shall use swale drainage to the maximum extent possible, except where it is physically unfeasible as determined by the Public Works Director. If feasible, perforated pipe shall be used for infiltration purposes in situations where piping is necessary.
(D) If divisions (A) (B), and (C) above are strictly adhered to and approved by the city officials, then the property will be exempt from the regulation that requires gutters and downspouts.
(Ord. 450, passed 9-9-2003)