{"hq_id":"hq-p-hom-000246","name":"Home Renovation Dust Control During Occupancy (Containment, HEPA, Negative Pressure)","category":{"primary":"household","secondary":"renovation","tags":["dust control","renovation","containment","HEPA","RRP","occupancy","lead","silica"]},"product_tier":"HOM","overall_risk_level":"moderate","description":"Renovating while occupants remain requires dust control. Renovation dust contains drywall, paint, wood, concrete (silica), and potentially lead (pre-1978) or asbestos (pre-1980). Negative pressure containment (fan exhausting through window with plastic-sealed doorways) prevents dust migration to living areas. HEPA vacuum essential — regular vacuum exhausts fine particles back into air.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.738,"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":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"children (floor-level dust, hand-to-mouth), pregnant women, asthmatics","overall_risk":"moderate","primary_concerns":["Dust migration to occupied spaces via HVAC","Lead dust from pre-1978 renovation","Silica dust from tile/concrete work","HVAC contamination distributes dust throughout home"],"exposure_routes":"Inhalation (airborne dust); oral (children hand-to-mouth); dermal (settled dust)"},"exposure":{"routes":["inhalation","dermal","oral"],"contact_types":["inhalation","skin_brief","oral_direct"],"users":["adult","child"],"duration":"days_to_weeks","frequency":"event-based","scenarios":["Renovation dust migrating via HVAC to occupied rooms","Children crawling on floors with settled renovation dust","Lead dust from pre-1978 work without containment","Silica dust from tile/concrete in adjacent rooms"],"notes":"Negative pressure: box fan in window pulling air from work area through plastic-sealed doorway. HEPA vacuum essential — regular vacuum exhausts fine particles. Dust wipe testing: $10-20/wipe verifies cleanup. HVAC: seal registers in work area, change filter (MERV 13+) after. Temporary relocation most effective for children and pregnant women."},"consumer_guidance":{"usage_warning":"Contain work area with 6-mil plastic. Negative pressure: box fan exhausting air from work area. Seal HVAC registers in work area. HEPA vacuum all surfaces after (never regular vacuum). Consider temporary relocation for children and pregnant women during major renovation.","safer_alternatives":["Negative pressure containment (fan + sealed doorway)","HEPA vacuum for all post-work cleanup","Seal HVAC registers in work area","Temporary relocation for children/pregnant women"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA RRP Rule — Dust Control","citation":"40 CFR 745.85","requirements":"Contractors on pre-1978 housing: containment, HEPA vacuum, dust wipe verification (40 ug/ft2 floors, 250 ug/ft2 sills). Does not apply to homeowner DIY.","compliance_status":null,"effective_date":"2008-04-22","enforcing_agency":"EPA","penalties":"Up to $37,500/day","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":"Plastic sheeting: bag dust inside before removing. HEPA vacuum bags: regular waste.","hazardous_waste":false,"expected_lifespan":"varies"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000008","compound_name":null,"role":"dust_component","typical_concentration":null},{"hq_id":"hq-c-ino-000001","compound_name":null,"role":"dust_component","typical_concentration":null},{"hq_id":"hq-c-org-000011","compound_name":null,"role":"dust_component","typical_concentration":null}],"identifiers":{"common_names":["home renovation dust control during occupancy (containment, hepa, negative pressure)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Sherwin-Williams","manufacturer":"Sherwin-Williams","market_position":"premium","notable":"Professional-grade paints"},{"brand":"Benjamin Moore","manufacturer":"Berkshire Hathaway","market_position":"premium","notable":"Premium interior paint"},{"brand":"Behr","manufacturer":"Masco","market_position":"mass_market","notable":"Mass-market interior paint"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"EPA RRP Rule — Dust Control (40 CFR 745.85)","jurisdiction":"USA","year":2008,"citation":"40 CFR 745.85","id":"src_05429858"},{"id":"iarc_100c_si","type":"regulatory","title":"IARC Monographs Volume 100C: Silica Dust, Crystalline, in the Form of Quartz or Cristobalite — Arsenic, Metals, Fibres, and Dusts","year":2012,"inherited_from_compound":"hq-c-ino-000008"},{"id":"osha_silica","type":"regulatory","title":"OSHA 29 CFR 1910.1053: Occupational Exposure to Respirable Crystalline Silica","year":2016,"inherited_from_compound":"hq-c-ino-000008"},{"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"},{"id":"iarc_100f_form","type":"regulatory","title":"IARC Monographs Volume 100F: Formaldehyde","year":2012,"inherited_from_compound":"hq-c-org-000011"},{"id":"epa_form_iris","type":"regulatory","title":"US EPA IRIS Assessment: Formaldehyde (draft)","year":2010,"inherited_from_compound":"hq-c-org-000011"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:29:11.535Z"}}