Question

prior to the passage of laws concerning hazardous waste, what was the usual method of dealing with hazardous waste in the united states? surface impoundments dumping into waterways injection wells underground storage

Explanation:

Prior to hazardous - waste laws in the US, surface impoundments were a common method for dealing with hazardous waste. These are man - made depressions in the ground used for storing waste. Dumping into waterways is illegal and harmful, injection wells and underground storage are more regulated methods often used after proper waste management laws were in place.

Answer:

surface impoundments