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AHERA CLEARANCE AT TWENTY ABATEMENT SITES
Citation:
Kominsky, J. R., R. W. Freyburg, J. R. Brownless, AND D. R. Gerber. AHERA CLEARANCE AT TWENTY ABATEMENT SITES. U.S. Environmental Protection Agency, Washington, DC, EPA/600/2-91/028 (NTIS 91-217398), 1991.
Description:
A study was conducted during the summer of 1988 to document Asbestos Hazard Emergency Response Act (AHERA) clearance air-sampling practices and clearance concentrations of airborne asbestos at 20 asbestos-abatement sites in New Jersey. Each abatement took place in a school building and involved removal of surfacing material, thermal system insulation, or suspended ceiling tiles. The study shows that AHERA sampling and analytical requirements and recommendations are not completely understood and followed by consultants conducting clearance air monitoring. AHERA clearance discrepancies exist between sample analyses reported by consultants representing the building owners and those reported independently by the New Jersey Department of Health/U.S. Environmental Protection Agency. The study further suggests that the choice of a clearance reference point may determine whether a site is considered acceptable for occupancy.