UTV Saint Paul, MM 135, North of New Orleans, LA

On 17JAN13, USCG Sector New Orleans contacted NOAA SSC in regards to a towing vessel which sank 200 ft off the right descending bank of the Mississippi River at mile marker 135, about 40 river miles west of New Orleans. The towing vessel is not currently releasing any oil or diesel, but concern is high. USCG is requesting a trajectory for a worse case discharge.