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Presented by:
Airport Full Service Consultant Services for BIG BEAR AIRPORT
Prepared for:
Association of California Airports
ACA ConferenceSession 6
INNOVATIVE DESIGN AND CONSTRUCTION OF AIRPORT WASHRACK FACILITY
BACKGROUND AND ELIGIBILITY2
Purpose and advantages of an aircraft washrack Aesthetics – protect investment Reduce corrosion potential Opportunity to closely inspect aircraft Provides additional feature/facility for
airport users
FAA Eligibility Classified at national priority ranking:
OT, OT, WR Low NPR, but is eligible for FAA AIP
funding for non-primary airports with non-primary entitlements
PLANNING ANALYSIS3
Visible and easily identifiable Ease of ingress and egress Limited FAA guidance, rely on local requirements Location, Location, Location
DESIGN CONSIDERATIONS AND ALTERNATIVES
Type of aircraft at the airport: General aviation and/or crop dusting aircraft
Type of system is predicated on local jurisdiction for disposal of excess water
Basic operation of washrack system (prior to Benton washrack)
Additional considerations
4
CASE STUDY ON BENTON AIRPARK5
Pre-project washrack situation Manual water valve Runoff and storm water quality
compliance concerns
Siting considerations for proposed washrack location Existing location and accessibility limitations – not viable Desirable location adjacent to the restaurant and FBO (also provides fuel service) Adjacent to transient parking ramp Proposed location does not impede existing operations or involve valuable space
6BENTON AIRPARK WASHRACK
Existing SiteProposed Site
City of Redding requirements for operation and water quality
• Requested additional control devices to direct and control flow from stormwater runoff into the storm sewer versus washwater into the sanitary sewer system via a clarifier.
• Resulted in system currently in place.
7CASE STUDY ON BENTON AIRPARK, continued
8
CASE STUDY ON BENTON AIRPARK, continued
Operation of system in-place Checks in place to ensure proper operation
Valves open and close to direct water Level switch in case of system blockage High water level alarm
Ease of maintenance Vertical flow clarifier with “Liftmate” cover
Free draining yard hydrant to prevent freezing
Rigid utility board with secure equipment installation
Sediment and hydrocarbon inserts for area drains to minimize blockage potential
Area light for illumination
9CASE STUDY ON BENTON AIRPARK, continued
WHAT WE HAVE LEARNED FOR NEXT TIME
Water pressure test after connection to the water source
“or equal” equipment considerations and how this may affect infrastructure installation
Sanitary sewer tie-in and design assumptions
Commercial hose fittings = marine fittings, this will likely be an issue if nozzle is not provided
10
BENTON AIRPARK WASHRACK – THE FINISHED PRODUCT
11
Thank you, from all of us at City of Redding and Mead & Hunt