2025/2026 100% VERIFIED CORRECT
Regulated Asbestos-Containing Material (RACM) - Answers Friable asbestos material
Cat 1 that has become friable, or will be or has been subjected to sanding etc.
Cat II that has a big probability of becoming crumbled or pulverized or reduced to powder
Category I - Answers ACM packings, gaskets, resilient flooring and asphalt roofing
Category 2 - Answers Any material not in Category I, non-friable ACM >1% asbestos that
cannot be crumbled, pulverized or reduced to powder by hand pressure (IE transit panels)
Where does the word for asbestos come from? - Answers Comes from the Greek word
"unquenched"
Serpen2ne asbestos - Answers Chryso2le• Accounts for most of the asbestos used in industry
(90%)
• white asbestos
Amphibole group - Answers Short, needle like and very bri6le. Difficult to wet
- Amosite - (South Africa) used in high temp steam lines and boilers 7% of asbestos used
- Crocidolite - blue asbestos
- Tremolite, Ac2nolite, Anthophylite - all rare
What defines a fiber - Answers >5 microns
3:1 length ra2o to width
, AHERA's 3 Main Categories - Answers Surfacing Materials - sprayed, trowled on or otherwise
applied to surfaces
- Plasters
- Fireproofing
TSI -
-Pipe Insula2on
Miscellaneous/Other -
- Floor 2le, mas2c, VFS, ceiling 2les, transite, roofing, gaskets, joints
OSHA Construc2on Industry Standard - Answers 29 CFR 1926.1101
- Class 1 - removal of TSI or surfacing
- Class 2 - removal of any other type
- Class 3 - maintenance or repair, no more than one glove bag
Class 4 - maintenance or custodial ac2vi2es where workers contact ACM or clean up intact
debris
NESHAP (Na2onal Emission Standards for Hazardous Air Pollutants) - Answers 40 CFR Sec2on
61, Subpart M
- no2fy EPA 10 working days before removing more than 260 linear feet, 160 square feet (CA is
100 soG) , 35 cubic feet
OSHA Medical Surveillance - Answers 1. Employee who performs Class 1, 2 or 3 work for 30
days or more per year
2. Employee who is required to wear a respirator
3. Any employee who is exposed to greater than PEL (.1 f/cc 8hr TWA)