The fern was growing at a central Florida site contaminated with large amounts of copper arsenate in the soil.
This lumber has been saturated with a preservative, usually chromated copper arsenate, that protects it for decades from insect attack and decay.
Blowdown may also contain chromium leached from cooling towers constructed of wood preserved with chromated copper arsenate.
Chromated copper arsenate (CCA) is a wood preservative that has been used for timber treatment since the mid-1930s.
Scheele's Green, a copper arsenate, was used in the 19th century as a coloring agent in sweets.
Ninety percent of this was used for treatment of wood with chromated copper arsenate (CCA).
Biocides such as creosote and chromated copper arsenate have only a temporary effect.
A federal judge in Miami denied class action status to plaintiffs who say they were injured by chromated copper arsenate, a wood preservative.
Its main use is in producing chromated copper arsenate (CCA) to treat timber.
One option that was developed e was chromated copper arsenate, which is accounts for about 20 percent of treated lumber sales.