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Alternative Low-Sulfur Diesel Fuel Transition Program for Alaska Final Rule

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Rule Summary

This final rule, which took effect in July 2006, implements the requirements for sulfur, cetane and aromatics for highway, nonroad, locomotive and marine diesel fuel produced in, imported into, and distributed or used in the rural areas of Alaska. Since June 1, 2010, diesel fuel used in these applications has had to meet a 15 ppm (maximum) sulfur content standard.

This rule implements the programs for highway and nonroad diesel fuels in Alaska, and provides some limited additional lead time for development of any necessary changes to the fuel distribution system in Alaska’s rural areas.

We believe this additional lead time is appropriate given the circumstances in the rural areas. Since 2010,

  • highway and nonroad fuel in rural Alaska has had to meet the 15 ppm sulfur standard, providing the full environmental benefits of these programs to rural Alaska as well, and
  • fuel used by engines in rural Alaska covered by the new source performance standard (NSPS) for new stationary diesel engines has had to meet the 15 ppm sulfur standard.

Additional Resources