Approve the design and construction management of the Pond E storm water drainage expansion.

The airport is adding infrastructure and pavement, which increases the need for storm water runoff. Pond E is designed to hold storm water and allow it to drain at measurable rates to avoid property damage. This project will increase the storm water holding capacity of Pond E, which is necessary due to increased airport infrastructure improvements. 

The airport maintains a Storm Water Drain Master Plan, which requires the holding of certain volumes of storm water retention to allow it to release back to nature at measurable rates. Doing so prevents property damage to the airport, other City infrastructure, and damage to other property owners. Standing water is also cited as a wildlife attractant as documented in FAA Advisory Circular (AC) 150/5200-33C, Hazardous Wildlife Attractants on or near Airports. Wildlife strikes to aircraft present a serious safety and property damage risk. This project will be designed in compliance with AC 150/5320-5D, Airport Drainage Design. The environmental approval for this project has been completed and is attached. 

Amendment 33 will have a Morrison-Maierle, Inc, design and construction management cost of $251,100.00. An Independent Fee Estimate (IFE) from Rood & Associates shows this price to be within 5.2% and regulations allow as much as a 10% price differential for an IFE. Financing for this project will come from a state infrastructure grant, Federal Aviation Administration (FAA) entitlements, and a 5% local match that will be paid from airport revenues. 

City Council may:

• Approve consultant Amendment 33 and allow the design for the increased capacity of Airport Drainage Pond E; or
• Not approve Amendment 33 and provide direction to staff on how to proceed.