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Re:Dumpster Diving FAQ (2004) by domtron_vox on Monday February 27, 2023 @05:04PM (#34962573)
Good point. Never ran into anything problematic myself, but we are fairly rural so construction is usually houses with occasional apartments. But definitely be wary of other stuff that may be in with the wood.

As for pressure treated wood, it is pretty obvious what has been treated and what has not, at least in my experience. Not sure if it's the process, or if they intentionally dye it, but treated wood has a strong green tint, though could probably have other colors too depending on the treatment method. But fresh untreated pine has a pretty obvious color.

Re:Dumpster Diving FAQ (2004) by systems_glitch on Monday February 27, 2023 @07:19PM (#34964045)
The old CCA treated stuff got the green from the copper in it. It's hard to tell if the A (arsenic compound) is still in there if it's weathered. Not a good idea to burn scraps from demolished old outdoor stuff.
Re:Dumpster Diving FAQ (2004) by nemo44x on Monday February 27, 2023 @10:39PM (#34965344)
It turns grey pretty fast. But yes it won’t be pink/white like fresh pine. If you know what you’re doing I’m sure you’re fine.