Lead

LEAD

Lead has been used as an additive in numerous products for over 5,000 years. Archeologists have found lead pigments in buildings constructed around 3,000 BC. In 20 BC, the Roman Empire constructed miles of aqueducts with lead-based cement. More recently, lead was added to paint, gasoline, plumbing solder and food containers. One of the seven precious metals, lead is durable, does not corrode and is resistant to extremely cold temperatures.

LEAD-BASED PAINT

Lead-based paint was used extensively in homes and buildings throughout the 1970’s. It is the most likely source of lead poisoning, especially among children. Weathered lead-based paint may become chipped and start to peel from its substrate. Soil in and around the house accumulates excessive amounts of lead dust that is frequently picked up by children at play. Severe lead poisoning in children can lead to behavioral disturbances, developmental delay and decreased intelligence.

LEAD-BASED PAINT ABATEMENT

Eliminating lead-based paint hazards will involve a combination of four strategies:

Replacement is accomplished by removing both the paint and its substrate, then replacing the component.
Removal is accomplished by seperating the paint from the substrate by scraping, abrasive removal and chemical stripping.
Enclosure is accomplished by enclosing the painted surface with a durable substance, such as drywall, paneling or siding.
Encapsulation is accomplished by coating or sealing the paint with a durable liquid.

During lead-based paint abatement projects, technicians will isolate the workplace with plastic sheeting, caution flagging and warning signs to the extent that is feasible. Personal protective equipment, including a respirator and disposable clothing, is used at all times.