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Juneau State Office Mailing Address Update

All mail sent to the DEC office in Juneau through the U.S. Postal Service must be addressed to P.O. Box 111800, Juneau, AK, 99811. Beginning October 1, all mail addressed to our Willoughby Avenue address will not be delivered and will be returned to sender by the Post Office. This change only impacts incoming mail to the Juneau office.

Ultra Low Sulfur Diesel (ULSD) - Refining Process

The diagram below describes how high sulfur distillates (diesel, jet fuel) are refined to achieve lower sulfur levels to meet the Environmental Protection Agencies (EPA) diesel fuel regulations.

Distillate Desulfurization Unit Diagram

(Image source: Tesoro Alaska)