EPAâs 2008 Lead-Based Paint Renovation, Repair and Painting (RRP) Rule (as amended in 2010 and 2011), aims to protect the public from lead-based paint hazards associated with renovation, repair and painting activities. These activities can create hazardous lead dust when surfaces with lead paint, even from many decades ago, are disturbed. The rule requires workers to be certified and trained in the use of lead-safe work practices, and requires renovation, repair, and painting firms to be EPA-certified.
Girls typically start to get acne when their hormones kick in (approximately 11 to 13 years old), which is about the time that they start their period. Boys start to get acne at the age of approximately 12 years, with a range of 9 to 15 years old. As most girls will attest, boys on average mature later than girls. Early on in the onset of teen acne, the main lesions are blackheads and whiteheads. Later in puberty, there is a higher incidence of inflammatory lesions.
Girls may enter puberty at seven, but will experience a majority of their growth in height when they are around 10.5 years old. Boys may begin puberty at the age of eight, but experience growth when they are around 13 years old. Since girls enter puberty before boys, they also experience growth spurts early. This can result in girls towering over boys of the same age. On an average, boys grow the fastest between the ages of 14 and 15.