Contact one or more licensed contractors in your area. Your oil company, local chamber of commerce or the Massachusetts Oilheat Council may provide recommendations.
Make sure the contractors whose services you are considering are licensed and insured. They will provide that information upon request and it is usually mentioned in any advertisements they place.
Request estimates from each contractor you are considering. Compare estimates, double-check references, and sign a contract.
Observe the removal process from a safe distance, while taking notes and photos. In the event the contractor reports a problem or leak to you, make sure you report it to the Massachusetts Department of Environmental Protection.
Have the tank removal contractor or an environmental consultant perform the required measurement of environmental contamination within 24 hours of removal of the tank.