CONTRACTOR EXAM / 80 +
QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE
2025/2026.
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, 1. PPb ANSWER parts per billion
2. PEL ANSWER permissible exposure limits ANSWER developed by OSHA to indicate the max
air- borne concentration of a contaminant to which an employee may be exposed over the duration
specified by the type of PEL.
3. Ug ANSWER microgram
4. 30 ug ANSWER The level of action
5. Hud recommends temporary relocation of residence for jobs lasting more than? ANSWER 5
conservative days
6. When dust and debris spread beyond blank feet follow high dust methods ANSWER 6 feet
7. Post warning signs on the building and at a blank perimeter around building less if distance to
next building or sidewalk is less than ANSWER 20 feet
8. Workers must clean when leaving the work area with ? ANSWER Heap vac
9. Children shall not have access to protective sheeting because ANSWER Suffocation Hazards
10. Do not conduct work if wind speeds are greater than per hour. If dust
and debris can't be adequately contained. ANSWER 20
11. ug/ft2 ANSWER microgram per foot square (dust sampling)
12. ppm (parts per million) ANSWER parts per million by weight
13. Ppb ANSWER parts per billionby weight 1,000 = 1 ppm
14. ug/g ANSWER microgram per gram
15. 30 ug ANSWER Action Level
16. 40 Ug ANSWER Allowable blood
17. 50ug ANSWER Permissible exposure limit
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