Types of Soil Remediation after Oil Tank Removal in Westchester County NY
Oil tank leaks happen when the wall of the tank is weakened by corrosion from rusting over the years say Roy from My Oil Tank Removal NY (www.myoiltankremovalny.com). Heating oil tank removal NY experts say that both underground and above ground oil tanks are susceptible to leakage if the protective measures against rust are not taken. The only remedy to a leaking oil tank is oil tank removal. For underground tanks, the full extent of soil contamination is seen after the tank is taken from the round. The homeowner is required by law to undertake soil remediation. The contractor may choose the remediation type according to the extent of the leakage.
Thermal soil remediation
The contractor takes the soil and puts it into a PTU where it heated at temperatures 650-900 degrees Fahrenheit. The heat evaporates the hydrocarbons and water in the soil. The soil is then cooled and prepared for recycling.
This is the use of biological means to break down the oil in the soil. This process uses bacteria, both aerobic and anaerobic, that can survive and break down hydrocarbons in the oil. The biological agent will have a high concentration of these bacteria to speed up the process. The soil is kept at favorable temperatures around 70 degrees Fahrenheit. In colder temperatures, it is heated and cooled to achieve this temperature. This process is the most friendly as the soil can support vegetation growth after the remediation.
This soil remediation technique is ideal where the contaminated soil is not that deep like in cases discovered after above ground tank removal. This process works by injecting large volumes of air into the soil which forces oil vapors upwards which can then be carbon filtered. This is a slower process as it depends on the soil depth, level of contamination, permeability, and pH of the soil. Its main advantage is that it leaves the soil intact.
This is the fastest method of soil remediation but the most unsustainable. The contaminated soil is isolated to prevent the oil spreading into clean soil. This is done by mixing it with lime or cement to bind it. Soil treated in this fashion cannot support vegetation.
Generally, the kind of soil remediation required depends on the extent of the contamination of the soil. Spills are less severe where heating oil tank installation is done above ground. The spills are noticed in a shorter time by visual inspection of the tank.
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