SOUTHERN PACIFIC DISCHARGED APPROXIMATELY $19,000 GALLONS OF METAM SODIUM FROM A RAILROAD TANK CAR TO THE SACRAMENTO RIVER WHEN THE TRAIN DERAILED WHILE TRAVERSING THE CANTARA LOOP NEAR DUNSMUIR, CA. THE POPULATION PLUME DESTROYED 45 MILES OF THE SACRAMENTO RIVER AND IMPACTED PORTIONS OF SHASTA LAKE.THERE IS A CLEAN WATER ACT CLAIM, A COST RECOVERY CLAIM, AND A NATURAL RESOURCE DAMAGES CLAIM.