North of Little Tinicum Island, between the mouth of Darby Creek and Jansen Avenue, Essington, bounded as follows: Beginning at a point (approximately latitude 39[deg]51[min]31[sec], longitude 75[deg]17[min]43[sec]) on a line in prolongation of the westerly line of Jansen Avenue 135 yards southerly from the mean high water line; thence 184[deg], 300 yards; thence 274[deg]30[min], 1,700 yards; thence 04[deg], 425 yards; thence 100[deg], 1,225 yards; and thence 95[deg], 490 yards, to the point of beginning.