How do I know if my property could be contaminated?

Soil and groundwater contamination can come from many sources, including past or present industrial and agricultural uses, gas tanks and gas stations, dry cleaning operations, residential fuel oil tanks, etc.  Knowledge can come from many places.  The county Register of Deeds can provide deed notices or restrictions.  The local health department, fire department, previous owners, real estate disclosures, past or current employees, or neighbors may also have information.  Samples of soil, groundwater, or soil vapor may be needed to determine if contamination does exist and at what concentrations.  The Remediation and Redevelopment Division District Offices have files on some contaminated property. 

The DEQ maintains databases which may contain information on contaminated properties (your property may still have contamination even if it is not on these lists or in DEQ files):