Define "contaminated site."

A "contaminated site" is specifically defined as a location where hazardous materials have been spilled or released into the environment, resulting in pollution that can pose risks to human health and the ecosystem. Such sites may contain various hazardous substances that require assessment and remediation to mitigate the dangers they present. This definition emphasizes the significant impact that the presence of hazardous materials can have on both the environment and public safety.

In contrast, other options describe different scenarios. A site designated for safe disposal of hazardous waste is not inherently contaminated but is intended to be a secure location for disposal purposes. A geographic area with only minor pollution concerns does not meet the criteria for contamination as it implies a lower level of risk. A site requiring routine environmental testing may be under monitoring for potential issues but does not automatically indicate that it has been contaminated. Thus, the focus on the actual release or spill of hazardous materials defines the true nature of a contaminated site.