Ultra Low Sulfur Diesel (ULSD)

Urban areas of Alaska are required to use 15 parts per million (ppm) sulfur standard diesel fuel (ULSD) for all diesel powered:

  • Highway/on-road vehicles (automobiles and trucks)
  • Non-road/off-road equipment (graders, bulldozers, backhoes, etc.)
  • Locomotive and Marine engines
  • Rural areas of Alaska are required to use 15 ppm sulfur standard diesel fuel (ULSD) for all diesel powered:

  • Highway/on-road vehicles (automobiles and trucks)
  • Non-road/off-road equipments (graders, bulldozers, backhoes, etc.)
  • Locomotive and Marine engines
  • Ultra Low Sulfur Diesel Links:

  • Federal Implementation Dates (PDF) for On-road, Non-road, Locomotive and Marine diesel fuels for all areas of Alaska
  • Summary of Dates and Federal Regulations (PDF) on Stationary Compression Ignition Internal Combustion Engines (CI ICE)
  • ULSD Dispenser Label Requirements
  • Frequently Asked Questions on Ultra Low Sulfur Diesel:

  • General Questions and Answers
  • Stationary Compression Ignition Internal Combustion Engines (CI ICE)
  • New Source Performance Standard (NSPS)
  • National Emissions Standard for Hazardous Air Pollutants (NESHAPS)
  • Small Refiner Provisions
  • The map below shows Rural (areas not accessible by Federal Aid Highway System (FAHS) and Urban areas of Alaska.

    Alaska Fuel Distribution
    (Select image for larger view)

    Fuel Distribution Map