In order to ensure the safety of the tenants for any renovation project in older housing, it is highly recommended that a Dust Sampling Technician provides their services to ensure that proper lead dust cleaning procedures have been followed. June 17.
Wipe samples for settled leaded dust can be collected from floors (both carpeted and uncarpeted), interior window sills, window troughs and other similar surfaces. A. Disposable, moistened towelettes or baby wipes.
Lead Clearance Testing A visual examination and collection of environmental samples by an inspector or risk assessor and analysis by an accredited laboratory upon completion of an abatement project, interim control intervention, or maintenance job that disturbs lead-based paint (or paint suspected of being lead-based).
The dust wipe testing needs to be performed by a person who has successfully completed the EPA Dust Sampling Technician certification, a one day course presented by an EPA accredited trainer. EPA certified Inspectors and Risk Assessors can also serve as this role.
1 – 3 μmLead dust: 1 – 3 μm. Fungal spores: 0.50 – 7 μm. Cooking smoke/odors: 0.30 – 1 μm. Paint pigments: 0.30 – 1 μm.
The purpose of lead dust clearance is to determine if the area is safe for re-occupancy. Lead dust clearance is performed: After renovation, repair, painting, and cleaning activities are finished in property built before 1978 and where children are assumed to spend time.
Federal law lowered the amount of lead allowable in paint to 1% in 1971. In 1977, the Consumer Products Safety Commission limited the lead in most paints to 0.06% (600 ppm by dry weight). Since 2009, the lead allowable in most paints is now 0.009%. Paint for bridges and marine use may contain greater amounts of lead.
The U.S. Centers for Disease Control and Prevention (CDC) defines a blood lead level of 5 µg/dl as a level of concern, indicating that you should take steps to reduce ongoing lead exposure. At higher blood lead levels, more aggressive measures are recommended, such as medical treatment.