Asbestos Investigator UPDATED Exam
Questions and CORRECT Answers
Two Groups of Asbestos - CORRECT ANSWER- ✔✔Serpentine & Amphibole
Serpentine - CORRECT ANSWER- ✔✔Sheet/layered structure
Amphibole - CORRECT ANSWER- ✔✔Chain-like crystal structuer
Chrysotile - CORRECT ANSWER- ✔✔Only Asbestos mineral in the Serpentine group (most
commonly used) ~95% of what is found. White color
5 types found in Amphibole Group - CORRECT ANSWER- ✔✔Amosite, Crocidolite,
Anthophyllite, Tremolite, & Actinolite
Amosite - CORRECT ANSWER- ✔✔Second most common (brown)
Crocidolite - CORRECT ANSWER- ✔✔(Blue) used in high temperature insulation
applications
Friable - CORRECT ANSWER- ✔✔Crumbled, pulverized, or reduced to powder by hand
pressure when dry
Surfacing Materials - CORRECT ANSWER- ✔✔Sprayed or troweled on surfaces
Thermal System Insulation - CORRECT ANSWER- ✔✔Insulation used to inhibit heat
transfer or prevent condensations
Miscellaneous Materials - CORRECT ANSWER- ✔✔Other largely nonfriable
products/materials
, PLM - CORRECT ANSWER- ✔✔Polarized Light Microscopy
TEM - CORRECT ANSWER- ✔✔transmission electron microscope
Dose-response Effect - CORRECT ANSWER- ✔✔People who work with asbestos will have
a much higher exposure and more likely to get health risk
Health Effects - CORRECT ANSWER- ✔✔Lung Cancer, Asbestosis, Mesothelioma
When did EPA Guidance first go into effect - CORRECT ANSWER- ✔✔March 31, 1986
How many Samples at minimum should be taken for surfacing materials for 1,000 SF or less
- CORRECT ANSWER- ✔✔At least 3
How many Samples at minimum should be taken for surfacing materials for 1,000 SF to
5,000 SF - CORRECT ANSWER- ✔✔At least 5
How many Samples at minimum should be taken for surfacing materials for 5,000 SF or
greater - CORRECT ANSWER- ✔✔At least 7
What is the recommended sample number for surfacing materials - CORRECT ANSWER-
✔✔Always 9
How many samples of thermal insulation should be taken in general? - CORRECT
ANSWER- ✔✔At least 3 bulk samples in a random matter of each homogenous material
When can you take 1 sample of thermal insulation? - CORRECT ANSWER- ✔✔If the
material is a patch and less than 6 linear feet
When do you not need to sample thermal insulation? - CORRECT ANSWER- ✔✔If it is
fiberglass
Questions and CORRECT Answers
Two Groups of Asbestos - CORRECT ANSWER- ✔✔Serpentine & Amphibole
Serpentine - CORRECT ANSWER- ✔✔Sheet/layered structure
Amphibole - CORRECT ANSWER- ✔✔Chain-like crystal structuer
Chrysotile - CORRECT ANSWER- ✔✔Only Asbestos mineral in the Serpentine group (most
commonly used) ~95% of what is found. White color
5 types found in Amphibole Group - CORRECT ANSWER- ✔✔Amosite, Crocidolite,
Anthophyllite, Tremolite, & Actinolite
Amosite - CORRECT ANSWER- ✔✔Second most common (brown)
Crocidolite - CORRECT ANSWER- ✔✔(Blue) used in high temperature insulation
applications
Friable - CORRECT ANSWER- ✔✔Crumbled, pulverized, or reduced to powder by hand
pressure when dry
Surfacing Materials - CORRECT ANSWER- ✔✔Sprayed or troweled on surfaces
Thermal System Insulation - CORRECT ANSWER- ✔✔Insulation used to inhibit heat
transfer or prevent condensations
Miscellaneous Materials - CORRECT ANSWER- ✔✔Other largely nonfriable
products/materials
, PLM - CORRECT ANSWER- ✔✔Polarized Light Microscopy
TEM - CORRECT ANSWER- ✔✔transmission electron microscope
Dose-response Effect - CORRECT ANSWER- ✔✔People who work with asbestos will have
a much higher exposure and more likely to get health risk
Health Effects - CORRECT ANSWER- ✔✔Lung Cancer, Asbestosis, Mesothelioma
When did EPA Guidance first go into effect - CORRECT ANSWER- ✔✔March 31, 1986
How many Samples at minimum should be taken for surfacing materials for 1,000 SF or less
- CORRECT ANSWER- ✔✔At least 3
How many Samples at minimum should be taken for surfacing materials for 1,000 SF to
5,000 SF - CORRECT ANSWER- ✔✔At least 5
How many Samples at minimum should be taken for surfacing materials for 5,000 SF or
greater - CORRECT ANSWER- ✔✔At least 7
What is the recommended sample number for surfacing materials - CORRECT ANSWER-
✔✔Always 9
How many samples of thermal insulation should be taken in general? - CORRECT
ANSWER- ✔✔At least 3 bulk samples in a random matter of each homogenous material
When can you take 1 sample of thermal insulation? - CORRECT ANSWER- ✔✔If the
material is a patch and less than 6 linear feet
When do you not need to sample thermal insulation? - CORRECT ANSWER- ✔✔If it is
fiberglass
