Final answer:
Dumping waste into waterways is not a legal method of hazardous waste disposal in the US, while surface impoundments, underground storage, and injection wells are regulated and accepted practices.
Explanation:
In the United States, dumping into waterways is NOT a legal method of dealing with hazardous waste. This practice can lead to severe environmental contamination and poses risks to ecosystems and public health.
Legal methods for hazardous waste disposal include surface impoundments, underground storage, and injection wells, which are subject to regulations such as RCRA Subtitle C for hazardous waste disposal.
Learn more about Hazardous Waste Disposal here:
https://brainly.com/question/39333175
