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Identifying Lead Hazards Lead -based paint is usually not a hazard if it is in good condition, and it is not on an impact or friction surface, like a window. It is defined by the federal government as paint with lead levels greater than or equal to 1.0 milligram per square centimeter, or more than 0.5% by weight. Deteriorating lead -based paint (peeling, chipping, chalking, cracking or damaged) is a hazard and needs immediate attention. It may also be a hazard when found on sur- faces that children can chew or that get a lot of wear -and -tear, such as: } Windows and window sills. Doors and door frames. ;3 Stairs, railings, banisters, and porches. Lead ='orn paitit 1:hips,. % %1hich you can see,. and lead i -ist, which you can't always see, can both be set'lotis hazards. Lead dust can form when lead -based paint is scraped, sanded, or heated. Dust also forms when painted surfaces bump or rub togeth- er. Lead chips and dust can get on surfaces and objects that people touch. Settled lead dust can re -enter the air when people vacuum, sweep, or wall( through it. The following two federal standards have been set for lead hazards in dust: 40 micrograms per square foot (Ng1ft2) and higher for floors, including carpeted floors. 250 pg/ft2 and higher for interior window sills. Lead in soil can be a hazard when children play in bare soil or when people bring soil into the house on their shoes. The following two federal standards have been set for lead hazards in residential soil: ,, 400 parts per million (ppm) and higher in play areas of bare soil 1,200 ppm (average) and higher in bare soil in the remainder of the yard. The only way to find out if paint, dust and soil lead hazards exist is to test for them. The next page describes the most common meth- ods used.