Stormwater Pollution Prevention Plan - Phoenix Sky Harbor ...

permission from COPAD to conduct this activity at wash racks (both covered and
uncovered) equipped with OWSs to collect the runoff or at car washes with recycled
water systems and OWSs. Runoff from non-recycled water facilities is routed to the City
of Phoenix sanitary sewer system. One exception is the Arizona Fueling Facilities
Corporation (AFFC), a fueling facility owned by a consortium of major air carriers,
where runoff from vehicle washing is discharged to an aboveground OWS. Wash water
is then routed to an oily water recovery tank which discharges to an above ground
evaporation pond where most of the wash water evaporates, however, 3-4 times per
year wash water will go through carbon filtration before discharging to the sanitary
sewer.
In addition, parts cleaners used for equipment degreasing are located inside various
hangars throughout the airport where they are not exposed to stormwater.
Because of COPAD’s requirements that (1) wash water be collected and properly
disposed to the City of Phoenix sanitary sewer if washing activities are conducted in an
area outside the designated wash racks; and (2) an approved wash plan be in place prior
to initiating washing activities outside the designated wash racks, washing activities
represent a moderate source of non-stormwater discharges to the storm drain system at
PHX.
4.1.3 Aircraft, Ground Vehicle & Equipment Storage
Temporary storage of aircraft, vehicles, and equipment occurs at the airport. For longterm
storage of aircraft, vehicles, and equipment, co-permittees are required to drain
fluids to minimize the possibility of leaking fluids. Long-term storage is considered
storage for more than 30 days. There are designated areas for maintenance of GSE
where equipment awaiting repair, salvage, or demolition is stored short-term. Most copermittees
also have designated areas where vehicles and equipment (i.e., tugs, baggage
carts, lavatory carts, etc.) are stored short-term when they are not being used. In
addition, some co-permittees are required to store damaged aircraft or damaged
vehicles on their properties. These aircraft and vehicles cannot be moved due to
insurance requirements. However, co-permittees are required to employ and properly
maintain, as appropriate, control measures such as drip pans for these aircraft and
vehicles. At these short- and long-term storage locations, aircraft, vehicles, and
equipment are stored away from storm drains or facility drainage basins. If this is not
possible, booms are placed around the aircraft, vehicles, and equipment and/or
hydrocarbon-filter fabric inserts are used to protect storm drain inlets.
During rain events, residues (e.g., fuel, oil, grease) on the equipment under repair or
residuals from spills or leaks from the stored aircraft, vehicles, or equipment could be a
source of potential pollutants in stormwater discharges. Storage activities represent a
moderate potential source of stormwater pollution for PHX.
4.1.4 Material Storage Areas
Many PHX co-permittees store chemicals, such as cleaning products, petroleum
products (i.e., gasoline, diesel, and jet fuel), and paints. These co-permittees have indoor
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