Removal of Oil Tank Previously Filled in Place with Sand

Many homeowners who converted to natural gas or to an aboveground Storage Tank (AST) had their buried heating oil tanks filled in place with an inert material such as sand, stone or foam as per acceptable construction code. 
 
The construction code  allows for these oil tanks to be closed in place, as some tanks are located beneath obstructions such as patios, decks, driveways and landscaping and removing the tank would cause a greater disturbance than just filling the tank in place.  So the construction code allows property owners to excavte enough to expose a portion of the tank, evacute oil and then fill the void with an inert material such as sand, concrete or foam. 
 
The problem is these property owners never had soil sampling completed to document if the tank leaked.  You see after you cut open and clean a tank, you can cut holes through the bottom of the clean metal tank and access soils below the tank, that you sample and submit to a laboratory for analysis.  This procudure has been around for a long time, in fact the name for the holes you cut through the bottom of the tank are called COUPONS.  
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By obtaining soil samples the propertyt owner can document that the tank did not leak.  Unfortunately by either choice or bad advice when  these tanks were previously filled in place no soil sampling was performed.  This leaves the unanswered question, DID THE TANK LEAK?  
 
Few of these previously completed tank abandonment projects have proper documentation.  By proper documentation we do not mean a construction permit (many have only that). We mean a narrative drafted by the environmental company indicating that the tank was entered and cleaned of residual oil, soil samples acquired below the tank and indicated the tank did not leak and lastly, documentation that the tank was filled with an inert material.  The following photos show oil tanks that were not properly CLEANED.   Years later Curren Environmental removed these tanks and had to dispose of the oil and sand and oil and foam placed inside the tanks.
 
 
  • NJ Oil tank filled with sand
    Oil tank filled with sand
  • NJ Oil Tank Abandoned in place
    Sand used to fill the tank is removed as well as oil and rainwater.
  • Tank filled with sand
  • Oil tank filled with foam
    This oil tank was previoulsy filled in place with foam.  No soil sampling or reporting was available documenting the work so Curren had to remove the oil tank.
  • NJ Oil tank filled with sand
    This photo shows a tank that was not properly cleaned before filling with sand.
  • Sand inside the previously closed in place tank is removed.
  • Oil tank abandoned in place
    As sand was removed from the tank oil flowed up.  Sand does not absorb oil.  The prior tank company did not remove all the oil before filling with sand.  Did your company do the same thing?
  • Abandoned oil tank with sand
    This tank was not cleaned before filling with sand.  Oil and rain water filled the tank spreading oil into the clean sand placed inside the tank.

Do you have an oil tank filled in Place?

Are you buying a house with a tank that is filled in place?

Call Curren before you buy or selling a property with an oil tank. We can assess the situation and let you know if what was done was up to current standards so you can proceed with the real estate transaction.  If further work needs to be done, our project managers can explain what steps will be necessary and the time and costs involved.

Monday to Friday 8:00 am  to 5:00 pm

Office staff are available to discuss your situation  or click the link and complete the form and a project manager will call you back.

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Environmental Experts Since 1992

Curren Environmental is your full service turnkey company for all oil tank related issues.   For over 20 YEARS, we have provided reliable, comprehensive and cost effective residential environmental services. Our boutique company is small enough to give each project the attention it deserves, and large enough to get any job done.   We are both experienced and committed to providing cost-effective solutions for all environmental issues.