A. Required: A stormwater management plan will be required with the development of any portion of the site. The stormwater plan shall be prepared at the developer's expense, by a professional engineer licensed in the State of Iowa. The stormwater management plan shall comply with the City's applicable design standards for stormwater management existing at the time each site plan is approved.
In addition, the development must adhere to title 7, chapter 8, article G, "Post-Construction Stormwater Management", of the City Code. The following is a summary of the requirements of said ordinance; however the summary is not all inclusive. Refer directly to the ordinance for more details.
At the time of site plan approval, the developer shall execute a stormwater management facility maintenance covenant and permanent easement agreement. The agreement shall provide for access to the facility at reasonable times for periodic inspection by the City to ensure that the facility is maintained in proper working condition and meets design standards. In addition, the agreement shall identify the parties responsible for maintenance of any stormwater facilities as well as plans for periodic inspection and maintenance of said facilities to ensure proper performance. The agreement shall be binding on all subsequent owners of land served by the facility and subject to review by the City. The agreement shall be recorded into the land record at the time of site plan approval.
B. Stormwater Management Considerations: The intent is to manage stormwater in order to protect and maintain water resources, while creating an aesthetically pleasing area which enhances the appearance and character of the City. Following guidance from the West Des Moines Comprehensive Plan, the facility location may provide a viable opportunity to incorporate sustainable stormwater infiltration management efforts. Sustainable practices can include but are not limited to the following, to be implemented as appropriate:
1. Permeable paving incorporated in the parking lots;
2. Bioinfiltration cells incorporated in the parking medians;
3. Bioswales incorporated in drainage ways;
4. Bioinfiltration basins. (Ord. 2300, 5-14-2018)