Chromated Copper Arsenate
Lumber treated with chromated copper arsenate (CCA) treated
lumber was phased out of consumer/residential products as of
December 31, 2003. This was a voluntary decision by industry to
move away from treated wood containing arsenic to new alternative
preservatives.
The U.S. Environmental Protection Agency (EPA) does not
require or recommend replacing existing CCA-treated structures
at this time. Although the EPA does say that any reduction in
arsenic exposure is desirable, it has not concluded that there is
unreasonable risk associated with CCA-treated products. Those
concerned about existing structures in their yards or gardens can
either seal the treated wood every two years with an oil-based stain,
or insert plastic liners into the containers to eliminate contact with soil.
Lumber treated with chromated copper arsenate (CCA) treated
lumber was phased out of consumer/residential products as of
December 31, 2003. This was a voluntary decision by industry to
move away from treated wood containing arsenic to new alternative
preservatives.
The U.S. Environmental Protection Agency (EPA) does not
require or recommend replacing existing CCA-treated structures
at this time. Although the EPA does say that any reduction in
arsenic exposure is desirable, it has not concluded that there is
unreasonable risk associated with CCA-treated products. Those
concerned about existing structures in their yards or gardens can
either seal the treated wood every two years with an oil-based stain,
or insert plastic liners into the containers to eliminate contact with soil.
