Curren Environmental Blog

7 Things I wish I knew before I removed my oil tank.

Posted by david sulock on Jul 25, 2018 9:11:47 AM

 A construction permit is required and it can take up to 20 business days to get the permit, which is a month.

 I thought that my out of use tank could remain where it was buried.  Nope, the buyer of my house needed a mortgage and to get the mortgage to buy my house, the tank had to be removed. Their attorney also advised that it be removed.   Yep found this out 9 days before settlement.  Did not know the tank removal permit took weeks to get.   Settlement eventually happened but it was 4 weeks later.

 

home tank removal

 

A tank removal report is important.

Had my tank removed no leaks.  Listed house for sale, buyer wanted proof that the tank did not leak.  I had a copy of the contract for the removal and I had a paid tank removal invoice, that was not enough,. The company I hired to remove the oil tank did not give me a report.  Stupid me the contract for removal did not include a report.   I had to pay another company to dig up the old tank grave, test the soils, and give me a report that the tank did not leak.  Apparently, buyers want 100% confirmation that the tank did not leak.  I mean it makes sense you want a report of the tank removal if you are buying a house, but why didn’t the tank removal company tell me that or give me one? 

Tank removal soil sampling is really important.

I was told I did not have to soil test when the tank is removed.  Apparently, testing is not required by law.  Well I removed the tank and it leaked and the immediate diagnosis was $10,000.00 to $15,000.00 to remediate the leak.  When I mean immediate, I mean I had an estimate to clean up the tank leak 2 days after the tank was removed.   I ultimately fired the tank removal company and hired another company.  The new company told me that you could not conclude 100% if remediation is necessary without soil testing.   Bottom line I got the soil tested, yes there was oil; no, it was not enough oil to demand remediation.  Saved the $10,000.00.  Couldn’t the company tell me that testing while not required is worth it if the tanks appears to have leaked.

Not all oil leaks mean you have to remediate.

As I learned, a hole in a tank only means that the company that removed the tank is going to give me an expensive quote to clean up the oil.  Apparently there are legal amounts of oil that can remain in the ground, kind of like good and bad cholesterol, but you would never know unless you test.

 

Holes in oil tank, but oil in bottom of tank

How excited the tank removal company crew would become after they removed my tank and found out it was leaking.

Got my oil tank removed, took the day off from work. The whole thing was very stressful as I bought the house with a sand filed tank and now 10 years later I am selling the house and the buyers want the tank removed.   When the tank was removed and I saw holes in the tank, my heart sank.  The mood of the tank workers was elevated when they saw the holes in the tank   You would think the Philadelphia Eagles won a 2nd super bowl.   I feel like they were leading me down a path to spend money I didn’t plan for or have.   Look I understand tank leaks but I was never told about what happens when a tank leaks.  It was upsetting that they were happy for by problems.

Getting something in writing is really important.

I hired a tank company to do my tank removal.  They talked a good game and had a very good price.   They had a 2-page proposal, it was brief and somewhat vague now that I think about it.  Well when I found out my tank leaked soil testing which I thought was done or would be done (we did speak about it) was not done.  They actually took a soil sample but it was not for determining if the oil level in the ground was legal it for the disposal of the soil.  I was presumed guilty.    I was more than a little miffed; I didn’t want to pay the bill until I got a report of removal.  I didn’t get that either.  I complained to an attorney who reviewed my 2-page quote.  I was told if it is not in the contract the company doesn’t have to do it.  So, I got no testing and no report, but I was told I would if in the small chance my oil tank leaked.   It was a case of he said she said, the attorney agreed it was deceptive but not worth the money to go after legally.

The cheapest price is not the best.

I figured a tank is a tank is a tank, so a tank removal is a tank removal.  I picked the least expensive company.  I thought I compared apples to apples and was picking the shiniest apple.  Well my tank leaked and I was up charged more than 5 times what the cost to remove the tank was.    What I learned from one of the tank company workers who needed to use my bathroom was the company doesn’t make money removing oil tanks.  The cleanup is much more profitable and their goal is to get as many tank removal projects  as possible, which increases their odds of finding a leaking tank.   They are supposed to call the office once they know a tank leaked, I guess to toast to their good fortune but not mine.

These seven snippets of experiences all came from clients of Curren who had their tank removed by another company.

Do something once and you are a novice.

Do something twice, well you are not a pro but you know more than you did the first time.

Bottom line, we have been performing tank projects for over 20 years.  Thousands of tanks tested, removed, and remediated.   Referrals are our largest source of work and we don’t advertise, no ads on the internet promoting Curren Environmental.     We do get many calls from people who after reading our web site and speaking to us wished they called us first for their tank removal.

If you have a tank and you want solid advice and your work professionally done, call our office.  We provide free consultation and estimates.  We have no sales people and 20 years of satisfied clients.  You can be the next one.

Monday to Friday 8:00 am to 5:00 pm   

888-301-1050

 

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Tags: oil tank removal, oil tank removal new jersey, oil tank removal nj, tank removal, tank leak, oil tank, oil tank removal pa

How long does an Oil Tank Last?

Posted by David C Sulock on Mar 6, 2018 4:01:00 AM

What is the life expectancy of an oil tank?

How long does an oil tank last?  When do you replace an oil tank.  These are popular oil tank questions.  All things have a finite life expectancy. Both aboveground storage tanks (ASTs) and underground storage tanks (USTs) have a usable life. The problem is your tank can fail (holes appear) and you may never notice.  An industry average for the life span of an oil tank is 20 years, some tanks last longer and some shorter.  This time frame is greatly dependent on the type of oil tank, construction of the tank (meaning thicker walled tanks generally can last longer). environment the tank is in (indoor - outdoor),  and the contents of the tank.  Harsher environments tend to shorten the lifespan of pretty much anything, including steel tanks. 

 
my oil tank leaked pic2.jpg

 

When I ask people how long they think a tank is supposed to last I typically get silence or "I don’t know".   Then, I tell them thank you for not saying "Tanks last FOREVER".   A simple rule of replacement is if the roof has been replaced, so should the tank.    This is for all the people who are using a tank TODAY and if your house was built between 1950 and 1995, your tank is beyond any reasonable expectation of usable life and should be replaced.  No there is not a likely possibility that the original tank from the day your house was constructed has been replaced.  The saying 'if it isn’t broken don’t fix it' is unfortunately followed when it comes to oil tanks.   Simply put, if people replaced tanks within a reasonable amount of time, you wouldn’t have tank leaks and expensive environmental cleanups.

How do oil tanks leak?  Many oil tanks rust through from the inside out.  This most often occurs when the oil is not present, meaning upper portion of the tank where the tank is empty and the oil is not present to lubricate the steel.  Tanks can also leak due to the use of low sulfur fuel.  Heating oil tanks that have low sulfur fuel and water can allow microbial growth to occur.  Secretions from these microbes can produce acids that can corrode a steel tank.

Click Here to Learn about Testing Oil Tanks for Leaks

Aside from corrosion inside the tank, an oil tank can deteriorate from the outside due to environmental conditions.   Rust never sleeps and for corrosion to occur you need metal, oxygen and moisture.   How fast a given metal rusts is based on the environment the metal is exposed too. 

 

Holes in Underground Oil Tank

 

Aboveground oil tanks may look fine from a cursory exterior view but in fact, could heavy corroded on the inside and be ready to fail. 

Underground oil tanks are thicker than comparable aboveground tanks due to a more corrosive environment.  In short, an indoor rated AST is thinner than an outdoor rated AST, which is thinner than a buried UST.  Curren has found that there is a wide variation in indoor aboveground and outdoor aboveground oil tank life spans due to the considerable variation in both the quality and thickness of steel (older tanks seem to have been a heavier gauge steel), which helps prolong the life of the tank.

 

Tank Questions? Click Here

We have seen indoor oil tanks in good condition that are 60 years old or older, and we have found failures in newer oil storage tanks that may have been made of thinner or cheaper steel and that did not last as long as the original ones.  The tanks made immediately following WWII are of higher quality, saying things are not made as good as they used to be is a very true statement when it comes to oil tanks.

Rather than guess a tanks oil tank condition, we suggest that if your home has an older aboveground oil storage tank, twenty years old or older, you should replace the tank.  Keep in mind many brand new oil tanks have a 1 year warranty.

What Can Cause an Oil Tank To Leak?

  • Exposure of the oil storage tank to wide temperature swings, especially in cold and humid climates can increase in-tank condensation leading to corrosion
  • Exposure of the tank fill or vent pipes to rain, especially to roof runoff for tanks mounted under the eaves of a home and especially if the oil fill cap is not securely tightened after filling with oil.  
  • External oil tank rust due to exposure to the weather. Many small tanks, 275 to 300 gallon tanks were used for unintended uses.  Meaning many of these size tanks, were never rated for outdoor use, but have been used for outdoor use and some even buried.   You can tell what use a tank is rated for by reading the UL label that is affixed to the top of the tank.  Manufacturers of newer oil storage tanks in this size range often have removed this "indoor use only" wording from the UL label.
  • Improper oil tank installation  of improper oil tank type.  Meaning the tank was not designed for the current use.  We have found indoor oil tanks that were moved outside and placed onto the underground in the soil surface below a deck, and then partially to half buried. What is this tank, an underground tank or an aboveground tank?  (The government definition of a UST is one where 10% or more of the tank is buried below ground.) These tanks were not rated for outdoor use at all and are at extra risk of leakage due to placement of the tank body directly in contact with the soil.
  • Improper oil storage tank supports, such as failure to keep the outdoor tank off of the ground, to install it at the proper pitch and direction of pitch, and to install it on level surface, unsecured legs of the tank can lead to the tank tipping over, ripping open an oil line, and obvious discharge of oil from the tank.   This is more common with out-of-service tanks.

Want information on tank removal? Clock here Oil Tank Removal

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