Freshwater Wetland Mitigation

Crestron Electronics, Inc.

Crestron Corporation retained Princeton Hydro to prepare and submit applications for Individual Freshwater Wetland and Individual Flood Hazard Area permits. The permits were for the installation of three additional parking lots to facilitate the proposed expansion of Crestron Electronics’ corporate and research facilities; Crestron Electronics had added 500 employees over the past five years.

The only available locations to accommodate the needed expansion required encroachment into the flood fringe of Sparkill Brook; this resulted in the loss of flood storage as well as impacts to 0.24 acres of wetland and 0.84 acres of riparian zone vegetation. To mitigate the loss of vegetation and flood storage, approximately 0.5 acres of existing fill material--man-made dredged material berms--within the flood hazard area of Sparkill Brook was removed and the floodplain wetlands restored.

Although the proposed mitigation site would be considered degraded in accordance with the Freshwater Wetlands Protection Act (N.J.A.C.) and thus ideal for wetland mitigation, the site is located in the riparian zone of the Sparkill Brook and therefore required a Hardship Exception to satisfy N.J.A.C. 7:13-10.2. The mitigation site was designed to be a forested floodplain wetland system similar to that of the adjacent forested wetlands along Sparkill Brook. The wetland and riparian zone mitigation project was completed in the fall of 2014.