Asbestos Inspections
What the exam tests
This domain tests pre-abatement inspections, homogeneous areas, sampling protocol, and report quality.
Core rules and concepts
- An inspection must be performed before renovation or demolition to determine whether ACM is present and to estimate quantities.
- In Indiana, inspections for regulated projects must be conducted by a licensed asbestos inspector.
- Divide the building into homogeneous areas-areas of material that are uniform in color, texture, and date of application.
- AHERA sampling guidance: collect at least 3 samples from each homogeneous area of surfacing material, 3 from TSI, and 3 from miscellaneous material. Each sample is analyzed by PLM with dispersion staining.
- If a material is assumed to be ACM (PACM), it can be treated as ACM without sampling, but the assumption must be documented.
- The inspection report should identify material, location, quantity, friability, accessibility, and recommended response actions.
Worked example
A 1965 school has 10,000 square feet of sprayed-on ceiling material in three visually different wings. The inspector defines three homogeneous areas and collects three samples per area (nine total). One wing tests 2% chrysotile; that entire homogeneous area is ACM. The inspector does not sample the pipe insulation in the boiler room because it is already PACM and will be removed as ACM.
Traps
Do not collect one sample per building or per material type. Do not assume a negative sample clears an entire homogeneous area. Do not substitute a contractor walkthrough for a licensed inspection report.