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FACILITY REQUIREMENTS parking spaces. In discussions with staff from Lawrence Air Service, it was learned that at times, up to 80 rental cars may be needed adjacent to the facility in preparation for arriving passengers. For enplaning passengers, offsite parking at a different parking lot is usually used, and passengers are then shuttled over or walk to the cargo apron. If charter operations are to remain at the cargo apron, parking requirements must be considered. The following chapter will explore options to accommodate charter operations, including apron and vehicle parking needs. Depending on these needs, additional airport property may need to be acquired adjacent to cargo facilities. Consideration should also be given to providing new facilities separate from cargo facilities to accommodate charter operations. AVIATION SUPPORT FACILITIES Support facilities at an airport encompass a broad set of functions that exist to ensure the airport is able to fill its primary role and mission in a smooth, safe and efficient manner. The following sections outline the requirements for different supporting facilities at Eugene Airport. Aircraft Rescue and Fire Fighting Airports that serve scheduled and unscheduled air carrier flights are required to provide firefighting facilities and equipment. ARFF equipment requirements for FAR Part 139 airports are determined by an index ranking based on aircraft size, number and type of emergency vehicles, and number of scheduled daily aircraft departures. The largest scheduled passenger aircraft operating at Eugene Airport is Allegiant’s MD-83. Per CFR Title 14 Part 139.315, this aircraft falls into Index C requirements; however, because it operates less than an average of five times per day, only Index B requirements are currently required. As published by the FAA, Eugene Airport is FAR Part 139 Class I, with an ARFF Index B. The largest commercial passenger aircraft forecast to regularly operate at Eugene Airport is the Airbus A320. At 123 feet in length, this aircraft falls just within the 126 foot maximum length required to be classified for Index B requirements. The forecast suggests this aircraft will operate a minimum of five times daily. This level of operations requires that EUG maintain its FAR Part 139 Class I, ARFF Index B status. Under Part 139.317, Index B requires the airport operator to have certain equipment and agents ready to respond. This includes the amount of dry chemical, water capacity and certain discharge rates. Index B requires one of the following scenarios: »One vehicle carrying at least 500 pounds of sodium-based dry chemical, halon 1211, or clean agent and 1,500 gallons of water and a commensurate quantity of ARFF for foam production. »Two vehicles: Two vehicles carrying an amount of water commensurate with the quantity of ARFF such that the total quantity of water for foam production carried by both vehicles is at least 1,500 gallons with at least one vehicle carrying the extinguishing agents specified as: 500 pounds of sodium-based dry chemical, halon 1211, or clean agent, or 450 pounds of potassium-based dry chemical and water with a commensurate quantity of aqueous film forming foam (AFFF) to total 100 gallons for simultaneous dry chemical and AFFF application. EUGENE AIRPORT MASTER PLAN 3-62