BilgeWater Testing

  • In Part 2.2.2 of the 2013 VGP, “New Build” vessels built after December 19, 2013 greater than 400 gross tons that may discharge bilgewater into U.S. waters subject to this permit must monitor (i.e., sample and analyze) their bilge water at least once a year.
  • If the analytical results are less than 5 ppm for two consecutive years, you need not sample and analyse subsequent years of permit coverage if:
  • You calibrate your OCM at least annually (calibrations during a vessel survey meet this requirement),
The methods for monitoring of the system
  • International Standard ISO 9377-2:2000 - Water Quality–Determination of Hydrocarbon Oil Index–Part 2: Method Using Solvent Extraction and Gas Chromatography
  • EPA Method 1664, n-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel Treated n-Hexane Extractable Material (SGT-HEM; Non-polar Material) by Extraction and Gravimetry
Our Services
  • In MITG, we may utilize both the above methods, according to customers requirements, to test for the Oil Content in the Oily Water Separator Effluent and certify the equipment’s compliance with 2013 VGP