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 equipment (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 Map (Select image for larger view)