The potential vulnerability of the landscape to oil spills is an information base critical to petroleum industry emergency response planners. In an emergency event, information on the potential risk for oil spills and the sensitivity of landscapes to oil spills is required. Tools for rapid production of response information are paramount. Earth Satellite Corporation (EarthSat) worked with Delta Systematics to evaluate the environmental vulnerability of the landscape to oil spills within the oil fields in the east central area of coastal Nigeria. EarthSat used ARC GRID to model the potential risk of oil spills from existing oil facilities and refined hydrocarbon shipping lanes. ARC GRID was also used to synthesize land cover classifications from digital Landsat TM imagery and digitized maps to model the sensitivity of the regional environment to oil spills. The project also modeled response time for air and seaborne response teams to potential accident sites.