Contaminant | Sources from the Auto-mobile workshops |
Engine oil | Waste engine oils drained from vehicles or used for lubrication of body parts |
Grease | Lubricants |
Gear oil | Waste gear lubricant oils |
Carbide | Wielding |
Lead | Petrol, body parts, acid waste from battery, used copper wire |
Cadmium | Batteries, painting, petrol |
Chromium | Panel beating, car body scrapping and painting |
Copper | Copper wires, electronic components of the vehicles and batteries |