these regulations, by creating higher standards within their institution. This was a very challenging experience for the oil companies, who had suffered enormous financial loss during this period. Complying with the regulation was a must, but the effect it had on the oil companies was tremendous. Company changes as a result Immediate work was done to ensure that Government policies were adhered to: - Immediate replacement of storage tanks as well as, underground piping facilities was done to avoid any more disaster. A compulsory replacement plan was put in place to ensure that compliance was followed and adhered too. - Transportation method was another important aspect of change that had to be address. The policy demanded a merit based approval of the transportation vessels to minimize or eliminate spillage. - There had to be strict approval policies that required stable channels and vessels for the transportation of oil within the environment. See also 1975 Guanabara Bay oil spill 1997 Guanabara Bay oil spill References Further reading Fisheries safety monitoring in the Guanabara Bay, Brazil following a marine fuel oil spill Petrobras wildlife rehabilitation response at Guanabara Bay oil spill Guanabara Bay Oil spills in Brazil Petrobras Duque de Caxias, Rio de Janeiro Guanabara Bay oil spill Guanabara Bay oil spill Guanabara Bay oil spill Guanabara Bay oil spill