• Corporate HQ, NY
  • Melville, NY
  • Iselin, NJ
  • Ossining, NY
  • Mount Laurel, NJ

Ocean County Subsurface Gravel Wetlands BMP


Ocean County, New Jersey<br style='line-height:2px'>Ocean County

HAKS provided design, environmental permitting and construction management services for a $6 million stormwater best management practices project that used a relatively new approach of constructing subsurface gravel wetlands to improve water quality for runoff that discharges into Barnegat Bay. The overall program called for retrofitting seven stormwater management facilities with underground wetlands to reduce nitrogen loading to the bay.

HAKS was assigned one of these facilities, which involved analyzing and redesigning an existing stormwater facility to function as a subsurface gravel wetland. The modified facility stores rainfall and routes it through flow control components to clean and remove nitrogen before discharging it. The end result is a substantial water quality improvement to each facility while maintaining the flood control capabilities of the basins.