{"hq_id":"hq-p-out-000013","name":"Urban Community Gardens on Legacy Lead-Contaminated Soil (Brownfield-Adjacent)","category":{"primary":"outdoor","secondary":"","tags":[]},"product_tier":"OUT","overall_risk_level":"high","description":"Urban gardeners growing leafy vegetables in the legacy-contaminated soils of redlined neighborhoods are often unaware their soil has never been tested. No federal requirement mandates soil testing before a community garden is established.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.873,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.1,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":3,"compounds_total":3,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"Urban gardeners; families consuming homegrown vegetables; children eating contaminated produce; brownfield-adjacent communities","overall_risk":"high","primary_concerns":["Urban community gardens on legacy-contaminated soil; leafy greens accumulate lead; no federal baseline soil testing mandate before garden establishment; urban gardeners often unaware of contamination"],"exposure_routes":"Ingestion of contaminated homegrown vegetables (especially leafy greens); chronic dietary exposure"},"exposure":{"routes":["dermal"],"contact_types":["dermal","inhalation"],"users":["adult","child"],"duration":"hours","frequency":"weekly","scenarios":["Incidental mouthing or hand-to-mouth transfer by children"],"notes":"Exposure to Urban Community Gardens on Legacy Lead-Contaminated Soil (Brownfield-Adjacent) occurs via dermal. Children and infants face higher exposure per body weight due to developing detoxification systems, higher surface-area-to-weight ratio, and behavioral factors (mouthing, crawling)."},"consumer_guidance":{"red_flags":[{"indicator":"Contains known carcinogen","meaning":"Lead — classified by IARC or NTP as carcinogenic or probably carcinogenic to humans","action":"Minimize exposure; consider alternatives; follow use guidelines strictly"},{"indicator":"Overall risk level: high","meaning":"Multiple hazard pathways identified for this product category","action":"Limit exposure duration and frequency; use protective measures where applicable"}],"green_flags":[{"indicator":"Third-party safety tested","meaning":"Independent laboratory verification of safety claims","verification":"Check for recognized certification marks and test reports"}],"what_to_ask":[{"question":"Has this product been tested for carcinogenic compounds?","why_it_matters":"Products in this category may contain or release carcinogenic compounds; independent testing provides verification beyond manufacturer claims"}],"alternatives":[{"name":"Community gardens on certified clean sites","notes":"Eliminates lead exposure risk entirely"},{"name":"Container gardening with purchased clean soil","notes":"Portable, controlled growing environment safe for all produce types"},{"name":"Indoor hydroponic systems","notes":"Soil-free growing with complete contamination prevention"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act)","citation":null,"requirements":"Pesticide-treated products must be registered with EPA. Product claims of antimicrobial or pest-repellent properties trigger FIFRA registration requirements.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Biocidal Products Regulation (EU) No 528/2012","citation":null,"requirements":"Treated articles must be labeled with active substance name, nanomaterial presence, and relevant instructions for use. Biocidal active substances must be on EU approved list.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"USA","regulation":"EPA Lead Renovation, Repair and Painting Rule (RRP, 40 CFR Part 745)","citation":null,"requirements":"Lead-safe work practices required for renovation of pre-1978 housing and child-occupied facilities. EPA-certified renovator required.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null}],"certifications":[{"name":"CPSIA (if children's)","issuer":"CPSC","standard":"Consumer Product Safety Improvement Act","scope":"Lead, phthalate content limits if classified as children's product"}],"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":"Varies by material; PVC items should not be burned; donate if reusable","hazardous_waste":false,"expected_lifespan":"1-3_years"},"formulation":{"form":"composite_material","key_ingredients":[{"hq_id":null,"name":"Primary component","role":"base_material","concentration_pct":"70-80"},{"hq_id":null,"name":"Secondary component","role":"additive","concentration_pct":"10-20"},{"hq_id":null,"name":"Filler or coating","role":"filler","concentration_pct":"5-10"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-env-000033","material_name":"Urban Brownfield and Legacy Industrial Soil Contamination (Lead/Arsenic/PAH Residential Pathway)","component":null,"prevalence":"common"}],"concerning":[{"material_id":"hq-m-env-000033","concern":"Urban residential soil median 50–400 ppm Pb; near historic smelters 1,000–10,000+ ppm; incidental soil ingestion during play (children 100–500 mg/day soil exposure); dermal contact; inhalation of resuspended dust","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000033","concern":"Urban gardening: leafy greens accumulate 10–100× soil lead; no federal baseline soil testing mandate; community gardens established without testing legacy contamination; 'food justice' movement intersects with brownfield soil","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000033","concern":"EPA 2024 action level raised 400→1,500 ppm (soil standard relaxed); CDC lowered blood lead reference 5.5→3.5 µg/dL (blood threshold tightened); simultaneous regulatory changes with contradictory implications","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000033","concern":"Environmental justice: brownfield-adjacent residential land disproportionately located in communities of color (EPA EJScreen data); highway routing through redlined communities compounds TRAP + legacy soil exposure","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-env-000033","concern":"Potential contaminant: Weathering and transformation products","compounds_of_concern":[],"source_refs":[]}],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":"Lead (Pb)","role":"base","typical_concentration":null},{"hq_id":"hq-c-ino-000002","compound_name":"Arsenic (As)","role":"base","typical_concentration":null},{"hq_id":"hq-c-org-000029","compound_name":"Benzo[a]pyrene and PAH complex","role":"base","typical_concentration":null}],"identifiers":{"common_names":["community garden","urban garden","backyard garden"],"aliases":[],"manufacturer":null,"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":[{"id":"src_001","type":"journal","title":"Baltimore Urban Soil Lead Survey: Inner-City Neighborhoods 400–3,000+ ppm (Mielke et al.)","year":2010},{"type":"regulation","title":"EPA FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act)","jurisdiction":"USA","id":"src_d8613e7c"},{"type":"regulation","title":"Biocidal Products Regulation (EU) No 528/2012","jurisdiction":"EU","id":"src_6be4bd58"},{"type":"regulation","title":"EPA Lead Renovation, Repair and Painting Rule (RRP, 40 CFR Part 745)","jurisdiction":"USA","id":"src_ada0a8c3"},{"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"},{"id":"iarc_100c","type":"regulatory","title":"IARC Monographs Volume 100C: Arsenic and Arsenic Compounds","year":2012,"inherited_from_compound":"hq-c-ino-000002"},{"id":"epa_arsenic_iris","type":"regulatory","title":"US EPA IRIS Assessment: Arsenic, Inorganic","year":1998,"inherited_from_compound":"hq-c-ino-000002"},{"id":"iarc_100f_bap","type":"regulatory","title":"IARC Monographs Volume 100F: Benzo[a]pyrene — Chemical Agents and Related Occupations","year":2012,"inherited_from_compound":"hq-c-org-000029"},{"id":"epa_bap_iris","type":"regulatory","title":"US EPA IRIS: Benzo[a]pyrene — Toxicological Review (Final)","year":2017,"inherited_from_compound":"hq-c-org-000029"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-01T14:27:16.470Z"}}