EPA Lead Course Latest Update Graded A+

EPA Lead Course Latest Update Graded A+ ug/g microgram per gram ug/ft2 microgram per foot square (dust sampling) mg/cm2 milligrams per centimeter squared (XRF) ug/dL microgram per deci-liter ug/m3 microgram per deci-liter (quantity in blood) 1% 10,000 ppm Allowed quantity of lead in dry surface paint when testing with XRF. 1.0 mg/cm2 Allowed quantity of lead in dry surface paint when testing with paint chip 5000 ppm Allowed quantity of lead in dry surface paint by weight .5% = 5000ppm Lead Quantities for Dust Clearance from floors/carpet 40 ug/ft2 Lead Quantities for Dust Clearance from furniture 40 ug/ft2 Lead Quantities for Dust Clearance from window sills 250 ug/ft2 Lead Quantities for Dust Clearance from window wells 400 ug/ft2 Lead Quantities for Dust Clearance from outside concrete 800 ug/ft2 Lead Quantities for Soil Clearance in contact areas 400 ppm Lead Quantities for Soil Clearance in non-contact areas 1200 ppm Allowable lead quantity in water 15 ppb/liter, or 15 mgL Lead blood level of concern for children 5 ug/dL NIOSH Lead blood level of concern 25 ug/dL OSHA employee lead blood level of concern 40 ug/dL OSHA medical removal lead blood level 50 ug/d? Lead Paint 1978 level allowed .06%; 600 ppm Current level