It was difficult for clean-up officials to fully document the damage to the St. Lawrence River ecosystem. An attempt was made to determine the mortality of wildlife. A count of animal mortality included 226 waterfowl and ducks and 508 birds, mammals and amphibians. Several hundred waterfowl, ducks, other birds, and countless fish were harmed or killed by the spill. Chemical shoreline cleaners were used, much like what was used during the Exxon Valdez oil spill. Neighbors worked hand-in-hand with government employees, students and national volunteers for months. Clean-up of the oil was accomplished primarily by intensive hand labor, through power-washing shorelines and hand cutting and hauling contaminated underwater and marsh vegetation. The clean-up was terminated on October 22, 1976; 122 days after the spill. However, many areas with oil contamination were not cleaned-up and the oil was left to degrade naturally. The United States alleged it spent $8,062,981 to clean its territorial waters and reimbursed Canada, pursuant to an executive agreement for their $768,265 spent.&lt;ref name="http://bulk.resource.org/courts.gov/c/F2/664/664.F2d.327.81-6084.1608.html"&gt;&lt;/ref&gt;