An X-ray fluorescence (XRF) analyzer is used to measure lead concentrations in paint. What is the unit of lead concentration in paint?
mg/cm2
Lab analysis is used to measure lead concentration in soil (sometimes paint chips). What is the unit of lead concentration in soil?
Parts per million - PPM
Lab analysis is used to measure lead in surface dust when conducting dust samples. What is the unit of measurement for lead in surface dust?
µg/ft2
Blood lead test can be done venous (using the vein like in the arm) or capillary (using capillaries like in fingers). What is the unit of measurement given for a blood lead test reading?
µg/dL
Samples of water can be taken from a home to test for lead concentrations. What is the unit of measurement for lead in water?
Parts per billion - PPB
Sometimes people test for lead in the air. What is the unit of measurement for lead in air testing?
µg/m2
What is the hazard level of floor lead dust?
10 µg/ft2
What is the hazard level of porch floor lead dust?
40 µg/ft2
What is the hazard level of windowsill and trough dust?
100 µg/ft2
What is the hazard level of soil for child play areas?
400 ppm
What is the hazard level of soil for vegetable gardens?
400 ppm
What is the hazard level of open soil?
1200 ppm
According to the US Dept. of Housing and Urban Development (HUD), the clearance dust standard for bare and carpeted floors is?
40 µg/ft2 or 0.43 mg/m2
According to the US Dept. of Housing and Urban Development (HUD), the clearance dust standard for interior window sills is?
250µg/ft2 or 2.70 mg/m2
According to the US Dept. of Housing and Urban Development (HUD), the clearance dust standard window troughs is?
400 µg/ft2 or 4.30 mg/m2
What is the EPA action level for lead in water?
15 ppb