Some things to keep in mind if you’re looking to save a few bucks by salvaging wood:
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wood from sources such as telephone poles and pallets can be dangerous due to toxic compounds used in its treatment which can include creosote, chromated arsenicals, and methyl bromide. Source: Overview of Wood Preservative Chemicals | US EPA
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a 2010 study by the National Consumers League tested wooden pallets for pathogens and found 10 percent to contain E.coli and 2.9 percent to contain Listeria. Source: NCL calls on FDA to regulate industry after tests reveal hidden pathogens on pallets used to transport food – National Consumers League – National Consumers League
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old wood can have hidden fasteners like staples, screws or nails which can damage equipment and pose a risk to the woodshop user. Recently a brand new planer was damaged at CoLab because someone put used wood through it.
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one of the most common ways to get bedbugs is used or discarded furniture Source: Bed bugs | HealthLink BC
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felled trees around the city can have fungal and/or insect infestations
In short, please think carefully before bringing in used or reclaimed wood.
Thanks!