Looking Fig. 3, used oils account for the 37% of the total generated
hazardous wastes in the plant, while the oil-contaminated
elements, hazardous chemicals packaging and used solvents represent
the 30, 28 and 3% of the total hazardous wastes generated,
respectively. Finally, “other hazardous wastes” (which include
polyclinical residues, cartridges and toners, painting brushes and
cans, spray packaging, batteries and fluorescent lamps) account
for only a 2% of the total hazardous wastes generated.