Which scenario commonly triggers site characterization due to potential contamination?

• A. Leaking underground storage tank
• B. Sale of business property
• C. Contamination at an operating chemical plant
• D. Clean up of a closed mine

Answer: (B)

When property transfers or is being financed, environmental due diligence is routinely triggered to identify any potential contamination from past uses. This site characterization helps buyers and lenders assess risk and decide if further investigation or cleanup is needed. Selling a business property is the scenario that most commonly prompts this step, because it initiates the formal assessment of whether the land or buildings carry latent contamination liabilities.

In contrast, a leaking underground storage tank signals an actual release that requires immediate cleanup and containment, not just initial characterization. Contamination at an operating chemical plant already involves known issues within an active operation, requiring ongoing controls. Cleanup of a closed mine is a remediation effort that follows discovery and assessment, rather than serving as the typical trigger for a pre-purchase characterization.