Runoff from glycol deicing operations at airports is detrimental to aquatic life in rivers and streams as the decomposition of glycol occurs. At the Pittsburgh International Airport a widebody deicing facility was built in 2001. Driving the decision to construct a new facility was a consent order issued by the Pennsylvania Department of Environmental Protection, requiring the Allegheny County Airport Authority to provide an environmentally friendly deicing facility. Design objectives included: A deicing pad to accommodate two widebody aircrafts positioned side-by-side; containment and recovery of the propylene glycol used for deicing; and incorporation of Best Available Technology (BAT). The facility's concrete pad was designed to collect all surface runoff from the deicing process into a trench-drain system. Underlying the collection system is a high-density polyethylene (HDPE) smooth liner which prevents propylene glycol from migrating into subsurface soils and groundwater. The deicing facility pad design incorporates a polypropylene 16 oz./yd.2 needlepunched nonwoven placed directly above a compacted base layer of recycled crushed concrete. Above the nonwoven layer, a 60-mil HDPE smooth liner was installed. To protect the liner from being damaged by the recycled crushed concrete subbase material, a polypropylene 60 oz./yd.2 needlepunched nonwoven was placed above the Iiner. The deicing pad section above this nonwoven consists of a 14-in. recycled crushed concrete subbase, a 7-in. bituminous concrete base course, and 16 in. of Portland cement.


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    Title :

    Airports: Preventing pollution during deicing


    Additional title:

    Umweltverträgliche Enteisung von Flugzeugen


    Contributors:


    Publication date :

    2003


    Size :

    2 Seiten, 3 Bilder, 2 Tabellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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