“D.C. has already spent or committed nearly $2 billion over the past decade to building gray infrastructure, building massive tunnels deep beneath the Anacostia and Potomac rivers, as large as the tunnels that carry the region’s metro trains. But the District recently marked a major milestone in its gradual embrace of green infrastructure, declaring its first green infrastructure pilot project a success and shifting to a hybrid green-gray infrastructure approach for the final phases of its court-mandated, $2.7 billion stormwater management plan known as the Clean Rivers Project.[…]
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