Authors: Cahoon Jr., Donald R.; Cowan Jr., James H.
Reference: Cahoon Jr., Donald R.; Cowan Jr., James H. (1988) Environmental Impacts and regulatory policy Implications of spray disposal of dredged material in Louisiana wetlands. Coastal Management 16(4):341-362
Summary: The high pressure spray nozzle can be aimed in any direction so that the spoil can be deposited discontinuously in order to completely avoid small natural drainage streams or sensitive habitats. In saline marsh, the sprayed spoil has been observed to remain mostly in place during dredging, with little or no run-off into the canal and turbidity levels in the canal were kept low because of the use of hydraulic suction. This new disposal methodology differs importantly from conventional low-pressure hydraulic dredging and the industry standard, bucket dredging, in terms of dimensions of the spoil area, spoil deposition pattern, cost of dredging, and purported environmental impacts.
What You Will Find Here: Wetland Loss p. 342, High-Pressure Spray (Solid deposition pattern p. 345), Low Pressure Spray p. 243, Cost p. 243, p. 347, p. 359, Field Demonstration (Qualitative p. 351), Spray Dredging, Regulatory (Environmental Impacts p. 348, Policy p. 349, p. 359) Monitoring p. 360