See N.J.A.C. 7:7A-3.4 for further details regarding line verification LOIs. (d) If an area with hydric soils has been drained for farming purposes through the use of drainage structures or features such as tiles or ditches, the Department shall presume that the area has wetlands hydrology for the purpose of identifying a freshwater wetland under N.J.A.C. 7:7A-2.3.