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ACHIEVING A TRANSMISSION ELECTRON MICROSCOPY CLEARANCE CRITERION AT ASBESTOS ABATEMENT SITES IN NEW JERSEY
Citation:
Brownlee, J., J. Lucas, K. Walls, J. Murphy, AND C. DiNardo. ACHIEVING A TRANSMISSION ELECTRON MICROSCOPY CLEARANCE CRITERION AT ASBESTOS ABATEMENT SITES IN NEW JERSEY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-88/227 (NTIS PB89118392).
Description:
Representatives of the New Jersey Department of Health's Asbestos Control Service conducted final clearance evaluations at 79 schools where asbestos removal took place during the Summer of 1987. The evaluations entailed a thorough visual inspection of each abatement area by an experienced inspector, the performance of aggressive air sampling, and sample analysis by transmission electron microscopy (Yamate-revised Method). Each abatement site was evaluated against an absolute air clearance criterion of 0.01 fiber per cubic centimeter (f/cu cm). The results of the study support the premise that a thorough visual inspection strongly influences passing a transmission electron microscopy (TEM) clearance test. These data also demonstrate that post abatement air concentrations that meet the clearance criterion (0.01 f/cu cm) can be achieved by a detailed cleaning, thorough visual inspection, and subsequent use of aggressive air sampling techniques.