Greatest health concern: Airborne asbestos fibers dispersed from soil

The route of exposure that represents the greatest health concern is the inhalation of airborne asbestos fibers, dispersed from soil by the action of pedestrian or vehicular traffic and wind dispersion.

In addition to the dispersion of fibers into the air, the frictional forces of foot and vehicular traffic on these surfaces would be expected to facilitate the breakdown of the amphibole asbestos bundles into smaller and more respirable fibers over time.

Based upon analytical data from the previous sampling events, the estimated volume of asbestos contaminated soil is 6300 yd3. This is the proposed minimum amount of contaminated soil which would need to be excavated and properly disposed of to be protective of human health.