[p2tech] Creosote replacement

I am working with a manufacturer of railroad ties. They currently use
creosote distilled from coal tar in a pressure treatment system. Are
there any environmentally friendly replacements for creosote? Can anyone
point me towards some studies showing replacements that work as well as
creosote? I have spent a few days searching and have not found anything
note worthy. I did notice a discussion on CR4 about cedar oil, but there
were not any valid references provided.

Thank you,

Robert Henry
Environmental Engineer
IDEM, Office of Pollution Prevention and Technical Assistance
Phone: 317-232-8188
email: RHenry at idem.IN.gov

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