Serving Northern Virgina / Washington DC Metro Area Customers Since 1987

Petroleum Tank Inspections & Testing

It is the law and is critical that you safely remove leaking tanks to protect our environment.

SES has inspected, removed and installed thousands of above and underground petroleum storage tanks since 1992. We specialize in serving individual home-owners, small convenience stores, farms and medium sized petroleum companies. SES employs several approved methods to determine the integrity of the tank depending on the site conditions and other factors. Most of our clients who are purchasing real estate with underground petroleum storage tanks are equally interested in three things:

  • Is the integrity of the existing tank suitable?
  • What is the possibility of a leak in the future?
  • Is there any evidence of contamination?

Even if the existing tank is tight, significant contamination can occur from over-fill or spillage during filling. Another concern is that there was a leak from a previous tank in the same location that was ignored when the current tank was installed.

To schedule a free inspection of your underground tank click here to fill out our on-line application. You will receive a free inspection and verbal opinion on whether the tank is leaking or not. If you need a written report for a real estate closing or a compliance soil sample analyzed, both can be arranged for a small additional fee.

If you would like a free evaluation of your petroleum storage tank or think you may have a leak, click here to request service.

SES Company


  • Virginia Onsite Wastewater Recycling Association
  • National Onsite Wastewater Recycling Association
  • Water Environment Federation
  • Virginia Association of Counties
  • Northern Virginia Building Industry Association
  • Design Build Institute of America
  • Better Business Bureau
  • Dulles Area Realtors Association
  • Prince William Regional Chamber of Commerce

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Responsible Management Entity

SES is one of only three businesses to be licensed as a Responsible Management Entity. Loudoun County Virginia was the first in the Nation to establish requirements for an RME based on EPA recommendations. SES manages several communities required to have an RME.

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  • Licensed Conventional & Alternative Onsite Soil Evaluators (AOSE)
  • Licensed Conventional and Alternative Onsite Sewage System Operators
  • Licensed Conventional and Alternative Onsite Sewage System Installers
  • NSF Certified Septic System Inspectors
  • Virginia Class A Contractors License
  • Environmental, Monitoring Well and SDS Endorsements
  • Licensed Sewage Handler
  • Licensed Wastewater Treatment Plant Operators
  • Licensed Water System Operators

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