{"hq_id":"hq-p-out-000066","name":"Outdoor Playground Structure Materials (Pressure-Treated Wood, Metal, Composite)","category":{"primary":"outdoor","secondary":"childcare","tags":["playground","structure","pressure-treated wood","CCA","ACQ","composite","metal","lead paint"]},"product_tier":"OUT","overall_risk_level":"low","description":"Playground structure materials present chemical exposure from weathering and contact. CCA (chromated copper arsenate) pressure-treated wood: banned for residential use in 2004 (EPA voluntary phase-out) but CCA playgrounds installed before 2004 remain in use — arsenic leaches to wood surface, transferring to hands. Replacement: ACQ (alkaline copper quat) and CA-B (copper azole) — copper-based, lower toxicity but corrosive to metal fasteners. Painted metal structures: pre-1978 paint may contain lead (children's hand contact, chalking paint). Composite/recycled plastic lumber: chemical additives (UV stabilizers, colorants) but very low exposure. Rubber coating on metal bars: may contain lead (CPSC recalls of rubber-coated playground equipment).","synthesis":{"derived_risk_level":"extreme","synthesis_confidence":0.878,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.15,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"all children (hand contact + hand-to-mouth), youngest children most vulnerable","overall_risk":"low","primary_concerns":["Pre-2004 CCA pressure-treated wood: arsenic surface leaching","Pre-1978 painted metal: lead paint chalking and hand contact","Hand-to-mouth transfer after touching any playground material","CCA wood splinters carry arsenic (wound + dermal exposure)"],"exposure_routes":"Dermal (hand contact with treated surfaces); oral (hand-to-mouth after contact)"},"exposure":{"routes":["dermal","oral"],"contact_types":["skin_brief","oral_direct"],"users":["child"],"duration":"hours","frequency":"daily","scenarios":["Children touching CCA-treated wood (pre-2004 playgrounds — arsenic surface residue)","Lead paint on pre-1978 metal playground structures (chalking, hand contact)","Hand-to-mouth after touching any playground surface material","Splinters from weathered wood: CCA wood splinters carry arsenic"],"notes":"CCA wood: EPA 2004 voluntary phase-out for residential (still allowed for marine, utility poles, highway). CCA playgrounds installed before 2004: arsenic leaches to surface — 60 ug arsenic per 100 cm2 (Florida DEP study). Sealant (oil or water-based penetrating stain) reduces CCA arsenic migration by 90% — should be applied every 1-2 years on CCA playgrounds still in use. Consumer Product Safety Improvement Act (2008): children's products lead limit <100 ppm — applies to new playground equipment. Composite lumber (Trex, TimberTech): recycled HDPE + wood fiber — no CCA, no lead, weather-resistant, expensive. Powder-coated metal: modern standard — durable, lead-free if post-1978."},"consumer_guidance":{"usage_warning":"Pre-2004 wood playgrounds: test for CCA with consumer arsenic test kit. If CCA confirmed: seal with penetrating oil-based stain every 1-2 years (reduces arsenic 90%). Pre-1978 metal structures: test for lead paint. Always have children wash hands after playground use (reduces arsenic and lead hand-to-mouth transfer by 90%+). New playground: composite lumber or powder-coated metal is lowest chemical exposure.","safer_alternatives":["Composite/recycled plastic lumber (zero CCA, zero lead, weather-resistant)","Powder-coated metal (post-1978, lead-free finish, durable)","ACQ or CA-B treated wood (copper-based, no arsenic)","Hand washing after playground use (reduces exposure 90%+)"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA CCA Voluntary Phase-Out (2004) + CPSIA Lead Limits","citation":"EPA CCA Cancellation Order (2003); 15 U.S.C. 2057c (CPSIA)","requirements":"CCA: voluntary phase-out for residential use effective 12/31/2003. Existing CCA structures not required to be removed. CPSIA: children's products (including playground equipment) lead <100 ppm substrate, <90 ppm surface coating.","compliance_status":null,"effective_date":"2004-01-01","enforcing_agency":"EPA (CCA) / CPSC (lead)","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"CCA wood: hazardous waste (arsenic + chromium). NEVER burn CCA wood. ACQ wood: regular construction waste. Metal: scrap metal recycling.","hazardous_waste":true,"expected_lifespan":"15-30_years"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":null,"role":"wood_preservative_leachate","typical_concentration":"varies"}],"identifiers":{"common_names":["outdoor playground structure materials (pressure-treated wood, metal, composite)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Skip Hop","manufacturer":"Carter's Inc.","market_position":"mass_market","notable":"Designer play mat brand"},{"brand":"Baby Care","manufacturer":"Baby Care","market_position":"premium","notable":"Large foam play mats"},{"brand":"Lollaland","manufacturer":"Lollaland","market_position":"premium","notable":"Non-toxic play surface"}],"sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"EPA CCA Voluntary Phase-Out (2004) + CPSIA Lead Limits (EPA CCA Cancellation Order (2003); 15 U.S.C. 2057c (CPSIA))","jurisdiction":"USA","year":2004,"citation":"EPA CCA Cancellation Order (2003); 15 U.S.C. 2057c (CPSIA)","id":"src_22dd01d6"},{"id":"src_001","type":"cdc","title":"CDC - Lead Poisoning Prevention","url":"https://www.cdc.gov/lead-prevention/","accessed":"2026-01-13","relevance":"Blood lead reference values, no safe level doctrine","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_002","type":"who","title":"WHO - Lead Poisoning Fact Sheet","url":"https://www.who.int/news-room/fact-sheets/detail/lead-poisoning-and-health","year":2024,"accessed":"2026-01-13","relevance":"Global burden statistics, health effects","inherited_from_compound":"hq-c-ino-000001"},{"type":"regulatory","title":"US Environmental Protection Agency (EPA)","jurisdiction":"USA","id":"src_defdd418","extraction":"description_reference"},{"type":"regulatory","title":"US Consumer Product Safety Commission (CPSC)","jurisdiction":"USA","id":"src_4e21f2c3","extraction":"description_reference"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-01T14:21:09.504Z"}}