Hello oceandream,
Shouldn't you consider listening to your teachers, it is probably not as if it was the first oil spill in the neighbourhood.
Some information (http://emergency.cdc.gov/gulfoilspill2010/light_crude_health_professionals.asp) for the workers at risk during the Gulf oil spill. Contact with oily sludge should be avoided, but oil can be smelled, is visible and doesn't mix easily with water. Traces of oil can be washed with water and soap without problem, sticky tar can be easily dissolved with baby or olive oil, butter, soft margarine, any skin friendly nonpolar fluid before washing.
Regards,
Luc