Pressure-Treated Lumber for Decks (ACQ Copper Azole, CCA Legacy, Soil Leaching) — outdoor safety profile
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CCA (chromated copper arsenate) banned for residential 2004, but millions of pre-2004 decks remain.
What is this product?
CCA (chromated copper arsenate) banned for residential 2004, but millions of pre-2004 decks remain. Arsenic leaches to surface and transfers to hands. ACQ/CA-B replacement: copper-based, no arsenic — but copper leaches into soil and corrodes standard fasteners. Sealant every 1-2 years reduces CCA arsenic by 90%. NEVER burn CCA wood — ash is highly toxic.
What's in it
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Preserved In Cca Wood
Frequently asked questions
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Sources (4)
Citations carried on this product's ALETHEIA record. A bracketed number in the text links to its entry here.
- ALETHEIA Safety Database — expert_curation
- EPA CCA Phase-Out (2004) (EPA CCA Cancellation Order (2003)) (2004) · USA — regulation
- IARC Monographs Volume 100C: Arsenic and Arsenic Compounds (2012) — regulatory (inherited from a compound record)
- US EPA IRIS Assessment: Arsenic, Inorganic (1998) — regulatory (inherited from a compound record)
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