2006 Ivory Coast toxic waste dump waste from European ports. Trafigura claims that this was done under agreement that the waste would be treated and disposed of legally, and that the substance was waste ("slops") from the routine washing of "Probo Koala"'s tanks. Again according to Trafigura, it became apparent that the untreated slops had been dumped illegally at municipal refuse dumps. They contend that the slops were an alkaline mix of water, gasoline, and caustic soda, along with a very small amount of foul-smelling and toxic hydrogen sulfide. Further, the company says that their tests show that, while noxious, the slop from their ship could
Vartiokylä dumping ground waste to the dumping ground, provided that it first neutralized the sulphuric acid waste with calcium oxide. The city urged its public works department to guard the dumping ground more effectively — earlier it was not guarded at all, as was usual at the time — and to immediately take measures so that the hazards posed by the toxic waste already at the site could be minimised. In the summer of 1962 the Vartiokylä dumping ground was closed, but not because of its environmental impact. The official story was that the place was full and could not accommodate further waste