If vermiculite insulation bulk samples analyzed by standard polarized-light microscopy (PLM) analysis is found to be less than 1% asbestos is it still considered an asbestos-containing material under the Asbestos Hazard Emergency Response Act (AHERA)?
Vermiculite insulation containing less than 1 percent asbestos does not qualify as asbestos containing material (ACM) under AHERA and the asbestos-containing materials in schools rule. If standard PLM analysis, ensuring that bulk samples comply with sampling requirements as laid out in 40 CFR part 763.86 and that subsequent analysis of…