Answers.
Abestos groups
Serpentine and Amphibole
Chrysotile (serpentine group) characteristics
Cylindrical, easier to wet, and most common
Amosite (amphibole group) characteristics
Short needle like, hard to wet, brown asbtos
Blue asbestos
Chrocidolite
ACM
Asbestos containing material
Friable
Soft and dry. Can be crushed or pulverized by hand.
Pipe insulation is universally considered friable. Same as ceiling tiles.
Non-friable
Breaks into pieces
Mastics, roofing material, floor tiles, cement.
ACBM
Asbestos containing building material
ACCM
Asbestos containing construction material
ACRM
Asbestos containing roofing material
What does the EPA consider ACM
>1%
What are the categories for ACM
Surfacing, TSI, and Misc.
Surf. material means what?
Anything that is sprayed or troweled on, or otherwise applied to surface.
Plasters, fireproofing, texturing.