What is HAZWOPER and what are its major component sections? In addition summariz

What is HAZWOPER and what are its major component sections? In addition summarize the key components that would come into play when you must evaluate an abandoned industrial paint manufacturing facility with a good size field of 250-300 unknown unmarked drums in the open field next to the manufacturing building. What factors contribute to the complexity of remediation of properties contaminated with fuels containing MTBE?