Just because you think YOU are safe doesn't mean everyone is safe. Families with small children are especially at risk from the dangers of lead contaminated soils. I suggest you reexamine your position.
I quote the North Carolina Cooperative Extension Service:
Lead is the most common contaminant in urban soils, and intake of contaminated soil—through direct ingestion, dust inhalation, or exposure to soil clinging to produce—may pose a serious health risk. Young children and pregnant women are at the greatest risk from lead contamination, as high lead exposure may result in behavioral and learning disabilities. Lead may be derived from a number of pervasive sources, including gasoline emissions, paint chips from older buildings, plumbing pipes, and industrial processes. Lead accumulates where it is deposited and is not easily removed from soil. Soil testing for lead is essential prior
to gardening in an urban setting, and if high levels are found, steps must be taken to minimize lead exposure and prevent health risks.
The bulk of this excellent pdf can be found here: http://www.soil.ncsu.edu/publications/Soilfacts/AG-439-78_Urban_Soil_Contaminants.pdf
Scuba
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