The Market leader for prescriptive environmental solutions



Successful tank cleaning requires a careful combination of efforts including depressurizing, reducing hydrocarbon concentrations, and minimizing the impact of waste and emissions on the environment. 
ITS Environmental’s patented tank cleaning and oil recovery solutions provides optimal environmental, health and safety performance, maximizes recoverable oil, and minimizes waste in a safe and cost efficient way.

Tank cleaning and sludge reduction with GTS-OR

  • ITS Environmental, prescribes chemically designed solutions augmented with specialized microorganisms
  • GTS-OR transforms heavy hydrocarbon-derived sludge found at tank bottoms into a pumpable medium
  • GTS-OR circulates throughout the tank to efficiently separate the oil, water, and solids
  • GTS-OR dramatically reduces sludge levels and toxicity, and recovers near 100% of hydrocarbons
  • GTS-OR reduces tank cleaning time up to 50% and dramatically shortens overall tank down-time
  • GTS-OR meets Federal and California regulatory exemption standards and waste requirements
  • GTS-OR complies with Health & Safety Code 25144 and land disposal restriction (LDR) requirements
  • GTS-OR minimizes waste disposal and liability associated with out-of-state treatment and disposal


Environmental constraints vary from state to state.  In California, the South Coast Air Quality Management District (SCAQMD) rule 1149 applies to tanks storing any organic liquid with an RVP of 0.5 psia or greater that is being emptied for cleaning and that contain a vapor space.

Prior to opening such a tank, degassing is required until the VOC concentration inside the tank is <5,000 ppmv for at least one hour after degassing stops.

The VOC reading (performed with an OVA meter calibrated to methane) is taken within one foot above the sludge material on the bottom of the tank and at least two feet away from the inside tank wall. When the VOC concentration is low enough, degassing can cease and the tank can be opened for cleaning or remain empty until introduction of a new product.

SCAQMD Rule 1149 degassing for regulated pipelines

  • Pipelines more than six inches in diameter recently containing liquid with an RVP of 2.6 psia or greater after liquids have been drained
  • SCAQMD Rule 1173 applies to regulated pipelines that are open to the atmosphere both inside and outside the boundaries of terminals and refineries
  • Emissions must be controlled by degassing or other methods to ensure VOC concentrations maintain <5,000 ppm for one hour after control operations end

Degassing with GTS-DEGASSER

  • GTS-DEGASSER is permitted by the SCAQMD and is certified to meet degassing requirements
  • GTS-DEGASSER reduces VOCs and LELs in compliance with EH&S and degassing  requirements
  • GTS-DEGASSER minimizes contaminants for hazardous waste source reduction, improves financial bottom-line, and streamlines clean-up operations