Asbestos removal procedures involving contaminated soil

To mitigate the threat to the public health and welfare or the environment posed by the asbestos present in surficial and subsurface soils, the proposed removal actions are outlined below. The removal will involve the following:

Removal and off-site disposal of large trees and vegetative brush in the proposed excavation areas;

Excavation and off-site disposal of asbestos-contaminated soils at an EPA-approved off-site disposal facility;

Personal and ambient air sampling during removal activities;

Implementation of engineering measures to control dust during the cleanup (dust suppression with water);

Analysis of bulk asbestos samples using standard PLM methods. Supplement PLM analysis with TEM for samples with lower concentrations of asbestos to assess whether contamination is present and whether sufficient excavation has occurred;

Backfill excavated areas with clean soil and dense grade aggregate in parking lot areas;

Re-grade and compact all disturbed areas to allow proper water drainage, and restore property with appropriate vegetation and/or asphalt, to original pre-removal condition.

These removal procedures are estimated to take several months to complete, after mobilization of support facilities. Final restoration activities, i.e. tree planting, may not be able to be completed at the conclusion of final grading activities. This activity will be dependent upon the vegetative growing season for the Mid-Atlantic states.

For the purposes of this removal action, the cleanup goal will be soils contaminated with asbestos at levels 1% or greater. The excavation depth is estimated to be approximately 24 inches.