The PCM clearance air sample results shall be considered satisfactory when every clearance air sample demonstrates an airborne concentration of fibers of less than 0.01 fiber per cubic centimeter, or the established background level(s), whichever is greater.

If TEM is the selected method of clearance air sampling and analysis, the clearance criteria and sampling protocols of AHERA shall be used. If PCM air sample analysis results exceed the satisfactory clearance air criteria under this Part, then TEM analysis of the entire set of clearance air samples may be used, provided that a standard accepted laboratory analysis method is used that shall report each air sample result in fibers per cubic centimeter, for appropriate correlation to the original unsatisfactory PCM clearance air sample results and the established background level(s). When AHERA TEM air sampling protocols are not used (i.e., TEM analyses of failed PCM air samples), PCM clearance criteria apply.

The air sampling asbestos contractor shall submit to the commissioner, all satisfactory PCM clearance air sample results along with background results, if they are greater than or equal to 0.01 fiber per cubic centimeter. The air sampling asbestos contractor shall also submit to the commissioner, all sets of satisfactory TEM analyses of previously unsatisfactory PCM clearance air sample results, along with the unsatisfactory PCM results. These air sample results shall be submitted, within two business days of receipt of satisfactory clearance air results, to the commissioner in care of the appropriate district office of the Asbestos Control Bureau, where the project takes place.