Is floor tile considered asbestos-containing material (ACM) under the Asbestos Hazard Emergency Response Act (AHERA) if there are contradictory results between polarized-light microscopy (PLM) and transmission electron microscopy?
For its inspection and assessment purposes, the local education agency (LEA) must first rely upon the results analyzed using the 1992 Interim PLM Method found at Appendix A to Subpart E in 40 CFR part 763, unless, it chooses to alternatively rely upon the improved “Test Method for the Determination…