OSHA 40 Hour HAZWOPER Training was designed for workers who directly deal with or handle hazardous materials. This includes removing or handling underground tanks or piping, handling contaminated soil and/or groundwater, subsurface investigations, and construction work in which hazardous materials may potentially be present. This Training is also required in situations where HAZMAT is prepared, packaged, labeled, marked, stored, or shipped for disposal and for any facility wherein hazardous wastes are treated, stored, or disposed of.