Definition
Underground storage tanks—usually old heating oil tanks—can leak and contaminate soil and groundwater. Finding a buried tank means potential environmental liability.
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Older homes, particularly in rural areas, may have underground oil storage tanks for heating. Over time, tanks corrode and leak, contaminating soil and potentially groundwater. Identifying buried tanks is challenging; property records, landscape features, or soil testing may reveal presence. Environmental assessment companies can evaluate contamination and required remediation. Liability for cleanup may pass to new property owners.
Pro Tip
Ask about heating history when buying older homes. If oil heat was used, buried tanks may be present—environmental assessment can identify them.
Example
An environmental assessment of a property with historic oil heat discovered a buried tank in the front yard. Soil testing revealed slight petroleum contamination. Tank removal and soil remediation cost $8,000.