A. All provisions for stormwater retention and all retention requirements and retention basin capacity calculations shall comply with the regulations of the city storm drainage master plan and drainage policy, as it from time to time may be amended.
B. Dedicated retention basins will be part of the city's park and open space system. Nondedicated retention basins shall be maintained by the owner. All nondedicated retention basin areas shall be designated as easement areas for retention purposes and shall have a recorded protective covenant requiring perpetual maintenance.
C. Two or more developers may join together to provide a common retention facility. A letter of agreement signed by all developers participating in the common retention area must be presented to the city engineer, and the recorded plat shall indicate that the retention area is a joint facility. The joint recreation area must meet all criteria as a single area.
(Ord. 1179 § 4.5(B))