Dibble provided site grading and drainage, water, sewer, and fire protection design for a four-acre site for an assisted living facility in Chandler, Arizona. Work included extensive research of the adjacent neighborhood drainage system as this parcel shared the residential neighborhood retention basin. This site is located in a flood area designated X, which is defined as an area that has an average water depth of less than one foot during a 100-year flood event. Therefore, the buildings finish floor is elevated to one foot above the existing grade to meet the Flood Control District of Maricopa County’s standards and the Housing and Urban Development Department’s (HUD) financing requirements. In order to secure HUD Financing, extensive effort was required to prepare a FEMA Conditional Letter of Map Revision – Fill (CLOMR-F) to document that the facility would be constructed above the 100-year water surface elevation.