If I were king, the three or four companies that manufacture vacuums would have been required to install HEPA filters on every vac they make starting around 1980, shotly after lead paint was banned. Then the lead dust would be removed at every cleaning, in nearly every contaminated household. Those unfortunate enough as to live in aging housing and unable to afford new vacuums would not be remodeling and creating large volumes of leaded dust and debris, and the ones who were would be cared for under the then existing HUD program rules. Everyone would have a HEPA vac eventually through atrittion. As it is now, a contractor is liable for all of the dust in the building even though the EPA protocols only require him to clean up what he disturbs. There is no way to differentiate between long standing environmental contamination and what gets disturbed in the course of a renovation, or whether a poisoning is the result of which exposure. Worse yet, the protocols are designed for the hokey cleaning verification procedure, they will almost certainly not produce an area clean enough to pass clearance. To give you an idea of how rediculous the EPA lead rules are; the EPA began requiring the removal of phosphates from detergents at the same time as it banned lead paint yet it continued, until the most recent publication (30 years later), to advise the use of phosphated detergent as the most effective way to clean up lead contamination. Pretty smart, huh?