Under the Asbestos Hazard Emergency Response Act (AHERA), how does one determine the amount of air to sample for the phase contrast microscopy (PCM) analysis to maintain a limit of quantification of 0.01 f/cm3?
Follow the procedure in the Environmental Protection Agency (EPA) Silver Book, or “Measuring Airborne Asbestos Following an Abatement Action (EPA-600/4-85-049)” specifically outlined in Chapter 4, page 5. The volume required to reliably quantify fibers down to 0.01 f/cm3 may be calculated using the first formula on this page. Note that…