Temporary Liquid-Storage And Filtration System For
Contaminated Storm Water At Dulles Airport Construction Project
Pedestrian tunnels were being excavated at the Dulles International Airport to
connect the main terminal to infield terminals. The excavation pits
contained storm water runoff contaminated with hydrocarbons, silt, and
clay particulates.
The sensitive construction site required a solution to the contaminated water
problem. Construction sites in the Washington, DC corridor must meet
strict storm water runoff discharge standards. The potential fines for
exceeding allowable discharge standards could be as high as $25,000 per
incident.
The Rain for Rent Virginia team was contacted by a prominent environmental
company to design and install a temporary liquid-storage and filtration
system for the contaminated storm water. An
18,000 gallon Worksafe steel
weir tank was used to settle heavy particulate matter, then the clarified
water was pumped through a PF50 bag and
cartridge filter and a DM72 carbon bed.
The treated water met the "non-detectable" discharge standards
required by the authorities. Tunnel construction was completed and costly
fines were avoided.
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