The Raleigh-Durham Airport Authority has received state approval to build a new stormwater management system, the largest of its kind in North Carolina.
The new system will be used to treat stormwater from the Park Economy 3 expansion project, which will add approximately 8,700 parking spaces to the lot.
Officials say the new system will be able to treat stormwater more effectively than most traditional systems. The project, designed in collaboration with North Carolina State University, will incorporate submerged gravel wetlands, which use plants to treat runoff in an above-ground wetland through a biochemical process.
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