Howard University School of Law Parking Lot LID Retrofit

Howard University School of Law Parking Lot LID Retrofit

Project Team
Bryan Arvai PE, Biohabitats Inc. (Designer/Engineer); Tim Allen, Triangle Contracting (Contractor); Wade Cassamajor, TCG Property Care (Landscape Contractor); Matt Sheppard, Timmons Group
Project Description

Over the previous decade, untreated stormwater at the Howard University School of Law’s Parking lot consistently overtopped an existing curb at a flooded storm drain inlet, eroding a 14-foot-wide, 6-foot-deep gulley and carrying sediment and pollutants into a tributary to Soapstone Creek. Howard University and their design/build team decided to retrofit the parking lot with 5,500 square feet of permeable pavement, 4,000+ square feet of bioretention, and converted a half acre of turf to a native plant meadow to treat the runoff and provide native habitat for a variety of pollinators, insects, birds, and other native species. With the stormwater practices designed to provide a stable conveyance of runoff, excavated material from these practices was then used to fill and stabilize the eroded gulley, further reducing a potential sediment source to the Soapstone Creek Tributary, and providing substantial cost savings to the project.

Best BMP Retrofit

This category recognizes the best stormwater projects constructed in the last five years to improve runoff quality from areas that were developed in the past without effective stormwater treatment. The retrofit can involve either modifications to an existing stormwater BMP or construction of new BMP.

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