Sector	Source	Hazardous waste
Commerce & Agriculture	Vehicle servicing Airports Dry cleaning Electrical transformers Hospitals Farms/Municipal parks	Waste oils Oils, hydraulic fluids, etc. Halogenated solvents Polychlorinated Biphenyl's (PCB's) Pathogenic/infectious wastes Unused pesticides/ "empty containers"
Small-scale Industry	Metal treating Photo-finishing Textile processing Printing Leather tanning Oil refining	Acids, heavy metals Solvents, acids, silver Cadmium, mineral acids Solvents, dyes, inks Solvents, chromium Spent catalysts
Large-scale Industry	Petrochemical manufacture Chemical/Pharmaceutical manufacture	Oily waste Tarry residues, solvents