Lead's weight: So much pre-1978 housing means an abundance of hazard
from The Philadelphia Inquirer
When Andrew Miller works on his Mount Airy home, his training as a certified lead-dust sampling technician comes in very handy. "I put drop cloths down everywhere, have HEPA [high-efficiency particulate air] filters on all the vacuum cleaners, and wet wipe every surface to make sure I have picked up all of the dust," said Miller, owner of Ally Services, an environmental building and contracting services firm. Such precautions are necessary. In Philadelphia alone, the Census Bureau's 2009 American Housing Survey showed, 91.6 percent of residences were built before 1978, the year that lead in paint was outlawed.
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