There has been submitted, as part of the area development plan for this area, to the West Des Moines public works department, a master storm water management plan for the entire development which shall govern the overall storm water management of the development. More specific storm water management proposals may be required with the development of each parcel, which shall be prepared by the developer prior to development within the parcel. The method of storm water management and the conveyance system shall be determined and approved prior to the development of any portion of the property within the PUD. (Ord. 1541, 8-4-2003)