If sediment buildup is preventing flow through the wetland or reducing storage volume, remove gravel and sediment from the cell(s), replace with clean gravel, and replant vegetation. Y__ 1 Sediment buildup in gravel bed Work Order # __________ N__ A permit may be required to B2 discharge when emptying the Subsurface system. Contact NJDEP Division of Gravel Cell Land Use Regulation before discharging. Check whether the perforated riser is damaged and allows soil or dead vegetation into the pipe Y__ Dead vegetation or soil in the outlet 2 Check whether sediment is control structure N__ deposited above the riser perforations Work Order # __________ Note:
B2 Subsurface Gravel Cell 1 Sediment buildup in gravel bed Y__ N__ If sediment buildup is preventing flow through the wetland or reducing storage volume, remove gravel and sediment from the cell(s), replace with clean gravel, and replant vegetation. Work Order # __________ A permit may be required to discharge when emptying the system. Contact NJDEP Division of Land Use Regulation before discharging. 2 Dead vegetation or soil in the outlet control structure Y__ N__ Check whether the perforated riser is damaged and allows soil or dead vegetation into the pipe Check whether sediment is deposited above the riser perforations Work Order # __________ Note:
07-subsurface-gravel-wetland-maintenance-field-man-april-2015.docx