The program responds to the Federal Water Pollution Control Act, as amended in 1972. The methodology has been designed for use by EPA Regional personnel, and to minimize requirements for the special skills of a petroleum engineer orsystems analyst. The scope of the study included offshore and onshore facilities in the Gulf of Mexico, Louisiana, Texas, California, and Alaska. Field surveys providing firsthand observation of selected facilities are documented in the report. Approximately 15,000 spill records were collected from 20 data sources covering major oil-producing States. Half of these records were identified as being useful to the study and are included in the report. The report presents, for use by EPA Regional O and HM personnel, a set of checklists which identify system points of spill vulnerability, and spill prevention guidelines applicable to these points. Application of these guidelines to a specific facility will require judgment and allow innovative spill prevention measures. (Modified author abstract)