TD News, Number 2, 2003 - Internet Web Site: '' Send an e-mail request for username and password to: ''

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Treating Wood—New Concepts

Wood that contacts the ground or that gets wet often will be attacked by fungi and insects. With the exception of naturally durable species, such as redwood and cedar, all wood that contacts the ground or gets wet often will begin decaying within a short period of time unless it is treated with a preservative. For several decades, consumers have been able to purchase pressure-treated wood at their local lumberyards. Most of this wood was impregnated with a preservative called chromated copper arsenate (CCA).

Photo of a wood trail bridge.

Now that new alternative treatments are available and wood treated with chromated copper arsenate has been restricted, Forest Service employees need information on treated lumber. Ellen Eubanks, landscape architect at SDTDC, has received calls from many of these employees. She refers callers to the Forest Products Laboratory, Madison, WI, Web site at:

This site has the answers to the most frequently asked questions about treated lumber, preservatives, and related topics. Also included are links to other sources of information and a list of Forest Products Laboratory publications.

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