Lead Hazard Control and Abatement Options
Interim controls vs. abatement
Interim controls manage hazards without permanently eliminating the lead source: specialized cleaning, repair and stabilization, friction/impact surface treatment, dust suppression, safe work practices, occupant education, and ongoing reevaluation. Abatement permanently eliminates the hazard: removal of the component or paint, replacement of the component, enclosure (mechanically fastened, sealed), encapsulation (coating over the paint), and, for soil, removal or permanent covering.
Choosing a method
Selection depends on substrate and condition: encapsulation requires a compatible coating and a structurally sound, non-deteriorated substrate; enclosure must be sealed at edges and not create a dust trap; heat-gun and open-flame burning are restricted or prohibited; chemical stripping generates hazardous waste and worker exposure. Soil abatement means removal or covering with a durable barrier plus a separation layer.
Dust suppression and cleanup
Containment (polyethylene, taped seams, negative air where appropriate), prohibit dry scraping and uncontrolled demolition, mist surfaces, and bag and label debris. Cleanup is sequential: HEPA vacuuming, then wet washing, then a final HEPA pass; never dry sweeping or using a standard shop vacuum. Clearance follows - visual inspection plus dust sampling and comparison to clearance criteria - before containment comes down and occupants return.
Worker protection overview
Respirators with appropriate filters, coveralls, gloves, eye protection, shoe covers, personal hygiene and no eating/drinking in the work area, plus change and wash facilities to prevent take-home exposure. Deleading restrictions apply to certain occupant-protection situations (occupants relocated as specified).
Trap and rule of thumb
Interim controls are not a one-time fix - they require reevaluation. Abatement is not complete until clearance passes. Rule of thumb: if the delivery permanently removes or isolates the lead, call it abatement; if it manages the hazard and needs monitoring, call it interim control.