INTEGRITY TESTING: Tank One performs a leak and corrosion test of the tank, sensors listen for specific sounds that identify failure in dry or wet areas of the tank. Acoustical sensors placed inside the tank (fill or vent pipe failures are common), provide conclusive results. This method is the safest as opposed to pressure testing that can undermine the structure of an aging unsound tank. This method CANNOT detect soil contamination surrounding tank or determine tank age. NEEDED TO OBTAIN TANK INSURANCE. SUBSURFACE INVESTIGATION: Is the soil beneath the tank contaminated? Soil sampling requires drilling or Boring into the soil at a depth of 5 - 10 feet around 4 sides of the tank. The soil samples are then sent to a State Certified Laboratory and analyzed for the presence of petroleum compounds. This is the only way to determine soil contamination around that tank. It CANNOT determine tank integrity. Soil testing CANNOT determine a piping failure. Maybe a previous tank in the same area failed. (Replacement occurs when there is a problem). Purchasing a home with contaminated soil will cause major financial hardship. Pre-existing conditions are NOT covered by tank insurance. MOST IMPORTANT TEST.ABOVEGROUND TANKS: Above ground tank testing also includes an ultrasonic instrument that measures the thickness of the tank walls. We use this sophisticated technology because the human eye can't determine how sound the steel is that's holding back almost a whole ton of oil. This test uses advanced algorithms to measure the thickness of the tank walls, reduced by internal corrosion, helping to predict tank longevity. The ultrasonic process is noninvasive and should be performed before any real estate purchase. TANK SEARCH: Many gas heated homes were once heated with oil. When converted, these tanks were never removed. We have located thousands of abandoned tanks unknown by even the seller. Many tanks found show the exposed piping was removed. Tank One employs a variety of methods including Ground Penetrating Radar (GPR), Magnetometry, Electro-magnetic induction, and in-tank probing, as well as standard pipe and cable locating techniques. Our location services provide on-site information, site drawings, and detailed field reports are provided for every job. As a metal detector might find objects just below the surface, the Magnetometer performs a much deeper scan. This instrument is used primarily to locate any sub-surface anomalies that resemble an Underground Storage Tank to a depth of 20 feet.