{"hq_id":"hq-p-out-000020","name":"Garden planter and raised bed","category":{"primary":"outdoor","secondary":"raised_beds","tags":["garden","planter","raised_bed","treated_wood","heavy_metals"]},"product_tier":"OUT","overall_risk_level":"moderate","description":"Garden planters and raised beds made from pressure-treated wood, composite materials, or galvanized metal. Pressure-treated wood may contain arsenic or copper-based preservatives. Composite materials may contain plasticizers or binders that leach into soil and plants. Galvanized metal may contain zinc and cadmium.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.856,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.38,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":4,"compounds_total":4,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"iarc_classification":null,"key_concern":"Leaching of arsenic, copper, or cadmium from treated wood or metal coating into soil and plants","litigation":null,"overall_risk":"medium","primary_concerns":["Arsenic leaching from older pressure-treated products","Copper phytotoxicity and soil accumulation","Cadmium leaching from galvanized coatings"],"sensitive_populations":"children, pregnant women","exposure_routes":"ingestion, dermal, soil contact"},"exposure":{"routes":["dermal"],"contact_types":["dermal","ingestion","soil_contact"],"users":["adult","child"],"duration":"hours","frequency":"daily","scenarios":["Incidental mouthing or hand-to-mouth transfer by children"],"notes":"Exposure occurs through soil contact while gardening, ingestion of vegetables grown in treated raised beds, hand-to-mouth transfer of soil particles, especially for children"},"consumer_guidance":{"red_flags":[{"indicator":"Pressure-treated wood without visible year or certification marking","meaning":"May be older CCA-treated product containing arsenic","action":"Ask manufacturer or seller for production date; avoid if pre-2004"},{"indicator":"Growing food directly on untreated/unsealed pressure-treated wood","meaning":"Direct contact with treated surface increases leaching into food","action":"Line bed with landscape fabric or barrier between soil and treated wood"},{"indicator":"No mention of composite material source or certification","meaning":"Unknown composition; may contain virgin plastics with binders or fillers","action":"Request material specifications; choose certified food-safe composite"}],"green_flags":[{"indicator":"Untreated cedar or redwood raised bed","meaning":"No chemical preservatives; naturally rot-resistant without toxic treatments","verification":"Confirm wood type and lack of treatment in product description"},{"indicator":"Food-grade certified composite material","meaning":"Material tested and verified safe for food gardening applications","verification":"Look for third-party certifications from recognized standards bodies"}],"what_to_ask":[{"question":"What is the preservative type, and when was this product treated?","why_it_matters":"Older CCA-treated products contain arsenic; copper-based treatments are newer and somewhat safer but still leach"},{"question":"Has this product been tested for heavy metal leaching into soil?","why_it_matters":"Direct testing provides evidence of actual migration risk during use"}],"alternatives":[{"name":"Untreated cedar or redwood raised beds","notes":"Natural rot resistance without chemical treatment"},{"name":"Food-grade composite materials","notes":"Plastic lumber designed for food gardening applications"},{"name":"Stainless steel or galvanized steel (avoid cadmium coating)","notes":"Metal construction with minimal chemical hazard"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA Ban on Arsenic-Based Preservatives","citation":null,"requirements":"CCA (chromated copper arsenate) banned in residential use since 2003; copper-based alternatives required for residential pressure-treated wood","compliance_status":null,"effective_date":"2003","enforcing_agency":"EPA","penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Biocidal Products Regulation (BPR) No 528/2012","citation":null,"requirements":"Restrictions on preservatives in wood products; approvals required for specific active ingredients","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":["Preservative type (copper-based vs. arsenic-based, if applicable)","Safety warnings if arsenic-containing"],"prop65_warning":{"required":false,"chemicals":[],"endpoint":null,"notes":"Older CCA-treated products should carry Prop 65 warning in California, but compliance is inconsistent"},"ghs_labeling":{"required":false,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":false,"categories_hidden":[],"estimated_count":0,"known_concerns":"Some manufacturers do not clearly disclose preservative type; it may require asking directly","notes":null},"notes":null},"recalls":[],"regulatory_gap":"No standardized testing or labeling of leaching rates from treated wood; consumers cannot easily determine migration risk","notes":null},"lifecycle":{"recyclable":true,"disposal_guidance":"Untreated wood and composite materials can be composted or recycled. Pressure-treated wood should not be composted; check local regulations for disposal. Galvanized steel is recyclable as scrap metal.","hazardous_waste":false,"expected_lifespan":"3-10_years"},"formulation":{"form":"solid","key_ingredients":[{"hq_id":"hq-c-ino-000007","name":"Pressure-treated lumber","role":"structural_material","concentration_pct":"varies"},{"hq_id":"hq-c-ino-000002","name":"Wood preservative (copper-based or arsenic-based)","role":"fungicide","concentration_pct":"trace"},{"hq_id":"hq-c-ino-000005","name":"Galvanized coating (zinc/cadmium)","role":"corrosion_protection","concentration_pct":"trace"},{"hq_id":"hq-c-ino-000107","name":"Composite material (plastic/wood fiber blend)","role":"structural_material","concentration_pct":"varies"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-str-000042","material_name":"Pressure-treated lumber","component":"raised bed structure","prevalence":"very_common","notes":"Chemically treated wood for rot resistance; newer products use copper-based preservatives instead of arsenate formulations.","hq_id":"hq-m-str-000042"},{"material_id":null,"material_name":"Composite deck material (plastic/wood fiber blend)","component":"garden planter","prevalence":"common","notes":"Composite materials reduce maintenance but may contain binders and plasticizers."},{"material_id":null,"material_name":"Galvanized or powder-coated steel","component":"metal raised bed frame","prevalence":"common","notes":"Metal construction is durable but may contain heavy metals in coating."}],"concerning":[{"material_id":null,"material_name":"Copper-based wood preservatives (CCA, CA)","concern":"Copper, chromium, and arsenic can leach into soil and plants; arsenic is a known carcinogen (IARC Group 1); copper at high levels is phytotoxic","compounds_of_concern":[],"source_refs":[]},{"material_id":null,"material_name":"Older arsenic-based preservatives (CCA)","concern":"Chromated copper arsenate (CCA) contains arsenic (IARC Group 1 carcinogen); banned in residential use in many countries but may still be found in older products or certain markets","compounds_of_concern":[],"source_refs":[]},{"material_id":null,"material_name":"Composite material binders and plasticizers","concern":"Plastic components may leach phthalates or other chemicals into soil; degradation over time releases particulates","compounds_of_concern":[],"source_refs":[]},{"material_id":null,"material_name":"Galvanized coating (zinc and cadmium)","concern":"Zinc and cadmium can leach into soil, especially in acidic conditions; cadmium is a carcinogen (IARC Group 1)","compounds_of_concern":[],"source_refs":[]}],"preferred":[{"material_id":null,"material_name":"Untreated or naturally rot-resistant wood (cedar, redwood)","why_preferred":"No chemical preservatives; naturally resistant to rot; lower leaching risk","tradeoffs":"More expensive; requires periodic maintenance/oiling; shorter lifespan than pressure-treated"},{"material_id":"hq-m-str-000040","material_name":"Food-grade composite or recycled plastic lumber","why_preferred":"No chemical preservatives; no heavy metal coating; made from recycled materials","tradeoffs":"Higher cost; limited durability in some cases; may contain UV absorbers","hq_id":"hq-m-str-000040"},{"material_id":"hq-m-str-000014","material_name":"Stainless steel frame","why_preferred":"No coating required; naturally corrosion-resistant; no heavy metal leaching","tradeoffs":"Significantly higher cost; may be overkill for garden application","hq_id":"hq-m-str-000014"}]},"compound_composition":[{"hq_id":"hq-c-ino-000007","compound_name":"Beryllium","role":"structural_material","typical_concentration":null},{"hq_id":"hq-c-ino-000002","compound_name":"Arsenic (inorganic)","role":"fungicide","typical_concentration":null},{"hq_id":"hq-c-ino-000005","compound_name":"Cadmium","role":"corrosion_protection","typical_concentration":null},{"hq_id":"hq-c-ino-000107","compound_name":"Arsine (AsH3)","role":"structural_material","typical_concentration":null}],"identifiers":{"common_names":["raised bed","garden planter","planter box","vegetable bed"],"manufacturer":null,"aliases":[],"brands":[]},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"sources":[{"title":"EPA - Environmental Protection Agency","type":"regulatory","url":"https://www.epa.gov/","accessed":"2026-03-23"},{"title":"CPSC - Consumer Product Safety Commission","type":"regulatory","url":"https://www.cpsc.gov/","accessed":"2026-03-23"},{"title":"ASTM Standards for Outdoor Equipment Safety","type":"industry","url":"https://www.astm.org/","accessed":"2026-03-23"},{"title":"CPSIA - Consumer Product Safety Improvement Act","type":"regulatory","url":"https://www.cpsc.gov/articles/consumer-product-safety-improvement-act-cpsia","accessed":"2026-03-23"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-01T14:21:41.111Z"}}