Environmental

What is an 'underground storage tank' (UST) and why is it significant in Oregon real estate?

AA water storage tank required by building codes
BA buried tank for hazardous liquids that may leak and contaminate soil/groundwater, requiring disclosure and remediation✓ Correct
CAn approved septic system component
DA natural gas storage facility under commercial properties

Explanation

Underground storage tanks (USTs) — commonly used for heating oil or gasoline — are significant environmental concerns because they can leak over time, contaminating soil and groundwater. Oregon requires disclosure of known USTs, and removal/remediation of leaking USTs can be extremely costly.

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